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HIGH EFFICIENCY AIR
CONDITIONER SYSTEM UP TO 23
SEER (22 SEER2)
Service
Manual
31-5000872 Rev. 0 05-25
READ CAREFULLY.
KEEP THESE INSTRUCTIONS
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GE is a trademark of the General Electric Company. Manufactured under trademark license.
Page 2
31-5000872 Rev. 0
General Information
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Page 3
31-5000872 Rev. 0
Important Safety Information
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TAmin Table
Charge (lbs) 10.0 15.0 20.0 25.0 30.0
Charge (kg) 6.8 9.1 11.3 13.6
Minimum Conditioned Area (ft²) 299.9
Minimum Conditioned Area (m²) 13.9 20.9 27.9
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Altitude Adjustment Factor
Altitude (m) 0 200 600 800 1000 1200 1600
Altitude (ft) 0 660 1310 1970 2620 3280 5250
Adj. Factor 1 1 1 1 1.02 1.05 1.1 1.12
Altitude (m) 1600 1800 2000 2200 2600 2800 3000 3200
Altitude (ft) 5250 5910 6560 7220 7870 8530 9190 10500
Adj. Factor 1.12 1.15 1.18 1.21 1.25 1.28 1.32 1.36
Qmin Table
Refrigerant Charge lb (kg) CFM Required Refrigerant Charge lb (kg) CFM Required
5 (2.3) 135 18 (8.1)
6 (2.7) 162 19 (8.6)
7 (3.2) 189 20 (9.1)
8 (3.6) 216 21 (9.5) 568
22 (10) 595
271 622
11 (5) 298
325 25 (11.3) 676
13 (5.9) 352 26 (11.7)
379 27 (12.2) 731
15 (6.8) 28 (12.7) 758
16 (7.3) 29 (13.2) 785
17 (7.7) 30 (13.6) 812
Installation Instructions
Page 7
31-5000872 Rev. 0
Model Number Identification
Installation Instructions
MAJOR / MINOR
REVISION
REFRIGERANT
5%
VOLTAGE
$3++=
DESIGN VARIANT
M-MODULATING
BRAND
N-GE
PRODUCT
S-SPLIT
SEER2
APPLICATION
A-AIR CONDITIONER
COOLING CAPACITY
(1000BTU/HR)
N S A – XX
XX
22
22
A 36
36
M 5
Page 8
31-5000872 Rev. 0
Installation Instructions
SPECIFICATIONS
Size 024 036 048 060
Nominal Tonnage 23 5
Sound Rating Number G%$ 60-68 61-73 63-75
Connections (Sweat)
/LTXLGOLQH2'LQ
6XFWLRQOLQH2'LQ
Compressor Type 9DULDEOH5RWDU\
Refrigerant Type ï5%FKDUJHIXUQLVKHG OEVR] OEVR] OEVR] OEVR]
Indoor Unit Expansion Valve (TXV) 26Z70 26Z71 26Z72
Outdoor Coil
1HWIDFHDUHDIWð
2XWHUFRLO
,QQHUFRLO - - -
7XEHGLDPHWHULQ
5RZV 12
)LQVLQ 22
Outdoor Fan
HP (&0
'LDPHWHULQ 28
%ODGHV 2
&IPPLQLPXPVSHHG 1630 1952 2216 3017
PD[LPXPVSHHG 2900 3556
5SPPLQLPXPVSHHG 275 372
PD[LPXPVSHHG 672 577 715
:DWWVPLQLPXPVSHHG 22 30 60
PD[LPXPVSHHG 55 113
Shipping Data - lbs. 230 283
ELECTRICAL DATA
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ð0D[LPXPRYHUFXUUHQWSURWHFWLRQ02&3DPSVXQLW 20 35 50
ñ0LQLPXPFLUFXLWDPSDFLW\0&$XQLW 15 21.5
Compressor 5DWHGORDGDPSV 9.9 15.1 19 22.2
Fan Motor )XOOORDGDPSV 2.6
OPTIONAL CONTROLS - ORDER SEPARATELY
Accessory Part No. 018 024 030 036
'LVFKDUJH$LU7HPSHUDWXUH6HQVRU 88K38
OPTIONAL ACCESSORIES - ORDER SEPARATELY
Accessory Part No. 018 024 030 036
)UHH]HVWDW 3/8 in.- 93G35
Stand-Off Guard-Edge Raiser Kit
3 in. (76 mm) - 27X34 )DFWRU\
6 in. (152 mm) - 27X35
)DFWRU\
NOTE([WUHPHVRIRSHUDWLQJUDQJHDUHSOXVDQGPLQXVRIOLQHYROWDJH
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Page 9
31-5000872 Rev. 0
Installation Instructions
Unit Dimensions – Inches (mm)
TOP VIEW
4-1/8 (105) Liquid
4-1/2 (114) Suction
LIQUID LINE
CONNECTION
SUCTION
LINE
CONNECTION
39-3/8
(1000)
(unit height)
BOTTOM VIEW BASE SECTION
(With Optional Standoff Kit)
30-1/2
(775)
6-1/8
(156)
4
(102)
29
(737)
26
(660)
4 (102)
4 (102)
4 (102)
6-1/4
(159)
LIQUID LINE
CONNECTION
SUCTION LINE
CONNECTION
DISCHARGE AIR
INLET
AIR
INLET
AIR
INLET AIR
ELECTRICAL
INLETS
INLET AIR
FRONT VIEWSIDE VIEW
¹ OPTIONAL
STAND-OFF
GUARD-EDGE
RAISER KIT (4)
(Field Installed)
¹ Adds 3 in. (76 mm) or
6 in. (152 mm) to unit height
Adds 1-1/4 in. (32 mm) to unit width and depth
¹ 37 (940)
With Raiser Kit
¹ 40-5/8 (1032)
With Raiser Kit
39-3/4 (1010)
(unit depth)
35-3/4 (908)
(unit width)
Page 10
31-5000872 Rev. 0
Installation Instructions
Typical Unit Parts Arrangement)
CONTROL PANEL
NS22A24, NS22A36
CONTROL PANEL
NS22A48, NS22A60
Inverter
Reactor
Inverter
Inverter
Reactor
Inverter
Outdoor Control
Contactor SPST
Ground Lug
Outdoor Control
Contactor SPST
Ground Lug
Figure 1. Control Panel Components
Page 11
31-5000872 Rev. 0
Installation Instructions
Typical Plumbing Components
Figure 2. Typical Plumbing Layout
ACCUMULATOR
HIGH
PRESSURE
SWITCH
VAPOR
SERVICE VALVE
LIQUID PRESSURE
TRANSDUCER
LIQUID
SERVICE VALVE
LIQUID
TEMP SENSOR
SUCTION
FILTER
DRYER
VARIABLE CAPACITY
ROTARY COMPRESSOR
COMPRESSOR
ACCUMULATOR
SUCTION
TEMP SENSOR
SUCTION PRESSURE
TRANSDUCER
DISCHARGE
CHECK
VALVE
Page 12
31-5000872 Rev. 0
Installation Instructions
Operating Gauge Set and Service
Valves
TORQUE REQUIREMENTS
:KHQVHUYLFLQJRUUHSDLULQJKHDWLQJYHQWLODWLQJDQG
DLUFRQGLWLRQLQJFRPSRQHQWVHQVXUHWKHIDVWHQHUVDUH
DSSURSULDWHO\WLJKWHQHGTable 1OLVWVWRUTXHYDOXHVIRU
IDVWHQHUV
IMPORTANT
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ZUHQFKLQWRWKHYDOYHVWHPUHFHVV
6HUYLFHYDOYHVWHPVDUHIDFWRU\WRUTXHGIURPIWOEV
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UHIULJHUDQWORVVGXULQJVKLSSLQJDQGKDQGOLQJ8VLQJDQ
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Table 1. Torque Requirements
Parts Recommended Torque
6HUYLFHYDOYHFDS IWOE 11 NM
6KHHWPHWDOVFUHZV IWOE 2 NM
0DFKLQHVFUHZV IWOE 3 NM
&RPSUHVVRUEROWV LQOE 10 NM
*DXJHSRUWVHDOFDS IWOE 11 NM
USING MANIFOLD GAUGE SET
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JDXJHVHWWKDWIHDWXUHVORZORVVDQWLEORZEDFN¿WWLQJV
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RISUHVVXUHZLWKDSVLJEXUVWUDWLQJ
OPERATING SERVICE VALVES
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UHPRYLQJUHIULJHUDQWÀXVKLQJOHDNWHVWLQJHYDFXDWLQJ
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ZLWKDVHUYLFHSRUWZKLFKKDVDIDFWRU\LQVWDOOHGYDOYH
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Service Valves - Angle And Ball
Operating Angle Type Service Valve:
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Angle-Type Service Valve (Back-Seated Opened)
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OLQ(VHWLQGRRUDQGRXWGRRUXQLW
Angle-Type Service Valve (Front-Seated Closed)
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WRWKHOLQ(VHWDQGLQGRRUXQLW
Figure 3. Angle and Ball Service Valves
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6HUYLFH3RUW&RUH
6WHP&DS
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8QLW
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CLOSED,QVHUWKH[
ZUHQFKKHUH
Page 13
31-5000872 Rev. 0
Installation Instructions
Service Valves - Angle And Ball (cont)
Operating Ball Type Service Valve:
5HPRYHVWHPFDSZLWKDQDSSURSULDWHO\VL]HGZUHQFK
8VHDQDSSURSULDWHO\VL]HGZUHQFKHGWRRSHQ
±7ROPENYDOYHURDWHVWHPFRXQWHUFORFNZLVH
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To Access Service Port:
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5HPRYHVHUYLFHSRUWFDSZLWKDQDSSURSULDWHO\VL]HG
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:KHQWHVWLQJLVFRPSOHWHGUHSODFHVHUYLFHSRUWFDS
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WLJKWHQDQGWRUTXHFDSSHU
7DEOH
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VL]HGZUHQFKWRWXUQDQ
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Reinstall Stem Cap:
6WHPFDSSURWHFWVWKHYDOYHVWHPIURPGDPDJHDQG
VHUYHVDVWKHSULPDU\VHDO5HSODFHWKHVWHPFDSDQG
WLJKWHQDVIROORZV
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7DEOH
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VSHFL¿HGWRUTXH
Unit Placement
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CAUTION
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POSITIONING CONSIDERATIONS
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VKRXOGEHKLJKHQRXJKDERYHJUDGHVRWKDWZDWHUIURP
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GHVFULEHGLQ¿JXUHGHWDLO'
Ball (Shown
Closed)
Service Port Core
To Indoor Unit
To Outdoor Unit
To OPEN, rotate stem
counterclockwise 90°.
To CLOSE, rotate stem
clockwise 90°.
Service Port
Service Port Cap
Stem Cap
Valve
Stem
1
2
3
4
5
6
7
8
9
10
11
12
1/12 TURN
1
2
3
4
5
6
7
8
9
10
11
12
1/6 TURN
3DJH
31-5000872 Rev. 0
Installation Instructions
Unit Placement (cont)
ELEVATING THE UNIT
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Installation Clearances
Figure 4. Installaton Clearances
NOTES -
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ER[
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LQPPDQGWKH¿QDOVLGHPD\EHLQPP
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STABILIZING UNIT ON UNEVEN SURFACES
IMPORTANT
8QLW6WDELOL]HU%UDFNHW8VH¿HOGSURYLGHG
±$OZD\VXVHVWDELOL]HUVZKHQXQLWLVUDLVHGDERYHWKH
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PRXQWHGRQXQVWDEOHDQXQHYHQVXUIDFH
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ROOF MOUNTING
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URRIWKDWFDQDGHTXDWHO\VXSSRUWWKHXQLW&RQVXOWORFDO
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NOTICE
Roof Damage!
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See
NOTES
See NOTES
See NOTES
See
NOTES
Control
Box
Page 15
31-5000872 Rev. 0
Installation Instructions
DETAIL A
INSTALL UNIT AWAY FROM WINDOWS
Outside Unit Placement
DETAIL B
,QVWDOOXQLWOHYHORULIRQDVORSHPDLQWDLQVORSHWROHUDQFH
RIGHJUHHVRULQFKHVSHUIHHW>PPSHU0@
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Slab Mounting at Ground Level
Figure 5. Placement and Slab Mounting
DETAIL C
Underside of Unit Showing
Optional Corner Post Raisers
DETAIL D
Deck Top Mounting
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Stabilizing Unit on Uneven Surfaces
IMPORTANT: 7RKHOSVWDELOL]HDQRXWGRRUXQLWVRPH
LQVWDOODWLRQVPD\UHTXLUHVWUDSSLQJWKHXQLWWRWKHSDG
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Page 16
31-5000872 Rev. 0
Installation Instructions
REMOVING AND INSTALLING LOUVERED PANELS
WARNING
7RSUHYHQWSHUVRQDOLQMXU\RUGDPDJHWRSDQHOVXQLWRUVWUXFWXUHEHVXUHWRREVHUYHWKHIROORZLQJ
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PANEL INSTALLATION
Figure 6. Removing and Installing Panels
Page 17
31-5000872 Rev. 0
Installation Instructions
NEW OR REPLACEMENT LINE SET
IMPORTANT
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Table 2.
REFRIGERANT LINE SET – INCHES (MM)
Model Valve Field
Connections
Recommended Line Set
Liquid
Line
Vapor
Line
Liquid Line Vapor Line
-024 3/8 in.
(10 mm)
3/4 in.
(19 mm)
3/8 in. (10 mm) 3/4 in. (19 mm)
-036 7/8 in.
(22 mm)
7/8 in. (22 mm)
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31-5000872 Rev. 0
Installation Instructions
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Page 19
31-5000872 Rev. 0
Installation Instructions
Table 3. Standard Refrigerant Line Set – Up to 50 Linear Feet in Length
Inches (mm)
Valve Size Connections Recommended Line Sets
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Riser Size
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Unit Line Size
Total Linear Length (feet)
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Page 20
31-5000872 Rev. 0
Installation Instructions
LINE SET
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Page 21
31-5000872 Rev. 0
Installation Instructions
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Page 22
31-5000872 Rev. 0
Installation Instructions
LINE SET - Brazing Procedures
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Page 23
31-5000872 Rev. 0
Installation Instructions
LINE SET - Brazing Procedures (cont)
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31-5000872 Rev. 0
Installation Instructions
Flushing Line Set and Indoor Coil
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Figure 10. Removing Metering Device and Flushing
Page 25
31-5000872 Rev. 0
Installation Instructions
Flushing Line Set and Indoor Coil - Removing Metering Device and Flushing
2. CONNECT GAUGES AND EQUIPMENT FOR
FLUSHING PROCEDURE
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Figure 10. Remvong Metering Device and Flushing (cont)
Page 26
31-5000872 Rev. 0
Installation Instructions
Flushing Line Set and Indoor Coil
4. TYPICAL NEW CHECK EXPANSION VALVE INSTALLATION PROCEDURE
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Figure 10. Remvong Metering Device and Flushing (cont)
Page 27
31-5000872 Rev. 0
Installation Instructions
Flushing Line Set and Indoor Coil
SENSING BULB INSTALLATION
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Figure 10. Remvong Metering Device and Flushing (cont)
Page 28
31-5000872 Rev. 0
Installation Instructions
LEAK TESTING THE SYSTEM
WARNING
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Page 29
31-5000872 Rev. 0
Evacuating Line Set and Indoor Coil
3. CONNECT GAUGE SET
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Figure 12. Evacuating the System
Page 30
31-5000872 Rev. 0
Installation Instructions
Evacuating Line Set and Indoor Coil (cont)
4. EVACUATE THE SYSTEM
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Page 31
31-5000872 Rev. 0
Installation Instructions
ELECTRICAL
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Page 32
31-5000872 Rev. 0
Installation Instructions
ELECTRICAL
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ELECTROSTATIC DISCHARGE (ESD) Precautions and Procedures
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Page 33
31-5000872 Rev. 0
Installation Instructions
ELECTRICAL
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31-5000872 Rev. 0
Installation Instructions
ELECTRICAL
TSTAT
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Page 35
31-5000872 Rev. 0
Installation Instructions
OUTDOOR UNITARY CONTROL - JUMPERS AND TERMINALS
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Page 36
31-5000872 Rev. 0
Installation Instructions
UNIT OPERATION
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Page 37
31-5000872 Rev. 0
Installation Instructions
Table 6. Outdoor Control Terminal Designations and Input /Outputs
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Page 38
31-5000872 Rev. 0
Installation Instructions
TABLE 6. Outdoor Control Terminal Designations and Input /Outputs
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Page 39
31-5000872 Rev. 0
Installation Instructions
TABLE 6. Outdoor Control Terminal Designations and Input /Outputs
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31-5000872 Rev. 0
Installation Instructions
SYSTEM OPERATION AND SERVICE
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31-5000872 Rev. 0
Installation Instructions
Table 7. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
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31-5000872 Rev. 0
Installation Instructions
Table 7. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
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31-5000872 Rev. 0
Installation Instructions
Table 7. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
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31-5000872 Rev. 0
Installation Instructions
Table 7. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
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31-5000872 Rev. 0
Installation Instructions
Table 7. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
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31-5000872 Rev. 0
Installation Instructions
POWER-UP / RESET:
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31-5000872 Rev. 0
Description Example of Display
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Installation Instructions
Table 8. Outdoor Control 7-Segment Unit Status Displays
3DJH
31-5000872 Rev. 0
UNIT SELECTION CODE FOR OUTDOOR CONTROL
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ÀDVKLQJWKHQUHOHDVH
Unit Code Unit Type Unit Model
96 721$&8QLW 16$0
97 721$&8QLW NS22A36M
98 721$&8QLW 16$0
99 721$&8QLW NS22A60M
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Display Symbol
or Character
Display Fan Test and Display String Option
Displayed
during start-
up or power
recycling
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.
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)
,QGLFDWHV\RXDUHLQWKHOutdoor Fan Test
Mode
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UHOHDVHEXWWRQ'LVSOD\EHJLQVÀDVKLQJ:LWKLQVHFRQGVSXVKDQGKROG
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$
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Control can be in Idle or demand mode7RHQWHUGLVSOD\FRQ¿JXUDWLRQ
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Installation Instructions
–
–
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Figure 17. Push-Button Operation
3DJH
31-5000872 Rev. 0
FIELD TEST MODE OPERATION
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Diagnostic Mode
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Outdoor Fan Mode
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CHARGE MODE OPERATION
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NS22A Charge Mode Operation with a Conventional
24VAC Non-Communicating Thermostat
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Error Code Recall Mode (NOTE – control must be in idle mode)
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Installation Instructions
Charge Mode Disabled Charge Mode Enabled
CHRG MODECHRG MODE
Page 50
31-5000872 Rev. 0
Installation Instructions
Display Display and Action (normal operation)
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Table 9. Field Test, Diagnostic Recall and Program Menu Options
Display Display and Action (normal operation)
.
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TYPICAL 7-SEGMENT ACTIVE COOLING DEMAND DISPLAY STRING
&
SECOND STAGE
COOLING DEMAND
H
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Figure 18. Typical 7-Segment Demand Display String
Page 51
31-5000872 Rev. 0
Installation Instructions
CONFIGURING UNIT
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Outdoor control is in IDLE mode
(No heating or cooling demand)
Turn room thermostat
to OFF
Push and hold button until the solid
38 sequence is displayed on the
7-segment display then immediately
release the button. This
configuration sequence allows the
installer to select unit selection
code (number combination) that matches
the outdoor unit type and inverter.
If three horizontal bars display in any
part of the 7-segment display string
during power-up, the outdoor
control did not store the unit
selection code. If this occurs, the
configuration sequence for that
section of the display string must be
repeated.
Yes
No
−
−
−
_
_
−
−
−
NOTE - Either the 38 sequence
will repeat 5 times and if a
selection is not made, the control
will return to idle mode.
NOT
SELECTED
SELECTED
Configuring Unit Selection Code
Power-up - Unit selection code (two-digit number) displayed
represents unit size code (outdoor unit capacity).
During initial power-up, firmware version, unit type, unit capacity
and unit selection code will appear on the 7-segment display.
96
97
98
99
2-TON AIR CONDITIONER
3-TON AIR CONDITIONER
4-TON AIR CONDITIONER
5-TON AIR CONDITIONER
SELECTED
NOT
SELECTED
UNIT SELECTION
CODE
When the correct unit section code is displayed, release
button immediately. [Display flashes.]
1.
2. Push and hold button until selection stops flashing during
one of the three cycles. [Release push button]
3. If selection is not made during those three cycles the control
returns to idle mode.
figuration mode and resets.
UNIT SELECTION
CODES
Press and hold the button during
the 38 cycling display.
the
UNIT
EXAMPLE 7-SEGMENT DISPLAY STRING
FIRMWARE
VERSION
UNIT
TYPE
UNIT
CAPACITY
UNIT
CODE
.
IDLE MODE
(NO DEMAND)
.
(NS22A24M)
(NS22A36M)
(NS22A48M)
(NS22A60M)
If three horizontal bars are shown in the 7-segment display
during power-up, the outdoor control did not store the last
configuration setting. If this happens, the configuration
sequence for that setting mush be repeated.
To enter unit selection
mode, push and hold the
button next to the 7-segment
display until DASH symbol
appears and immediately
release button. Once DASH
starts flashing, proceed to next step.
Figure 19. &RQ¿JXULQJ8QLW6HOHFWLRQ&RGH
Page 52
31-5000872 Rev. 0
Installation Instructions
OUTDOOR CONTROL
COMPRESSOR PROTECTION – FIVE-STRIKE
LOCKOUT
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Resetting Five-Strike Lockout
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Page 53
31-5000872 Rev. 0
Installation Instructions
PROFESSIONAL MAINTENANCE
NOTICE
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Outdoor Unit
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Indoor Unit (Air Handler or Furnace)
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General System Test with System Operating
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3DJH
31-5000872 Rev. 0
Installation Instructions
UNIT WIRING DIAGRAMS
Figure 20. Typical Unit Wiring
Page 55
31-5000872 Rev. 0
Installation Instructions
UNIT SEQUENCE OF OPERATION
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UHODWLRQWRXQLW6WDWXVXQLW)DXOWDQGORFNRXW/('&RGHVDQGXQLWV\VWHPRSHUDWLRQLQWHUDFWLRQV
Yes
No
Yes
No
Room thermostat provides a Y1 or Y2 demand to
the main control on systems with a conventional
24VAC thermostat.
All switches closed
ing range.
Check for status or
fault codes in the
outdoor control or
room thermostat.
(NOTE - Refer to low
pressure and high
pressure switch flow
charts for sequence
of operation.
1. View the AIR CONDITIONING screen
for current compressor frequency in
hertz.
2. View the AIR HANDLER screen for
actual CFM of the indoor blower
motor.
From idle mode
Outdoor Control
1. Sends a demand to the compressor
inverter to start and run the
compressor up to the requested
pumping capacity (Frequency in
hertz).
2.
Output signal is provided on PWM
and COM terminals to start and run the
ECM outdoor fan at the demand RPM.
3. Sends a communication signal into
the indoor unit to start and run the
supply fan motor at the demand air
volume (CFM).
On 24 VAC power-up or outdoor reset, the outdoor control shall perform the following tasks:
1. Start the anti-short cycle 3-minute delay in the outdoor control.
2. Check status of the temperature sensor and pressure devices.
3. If the outdoor control does not detect any error codes, outdoor control sends 24 volts out on the
CNTCTR terminals to pull in the contactor coil. (Note - These checks take about 60 seconds.)
4. The contactor contacts pull IN and main power is applied to the compressor inverter.
Diagnostic Screen
Figure 21. 24 Volt Power-Up or Outdoor Reset
Page 56
31-5000872 Rev. 0
Installation Instructions
UNIT SEQUENCE OF OPERATION
Y1 DEMAND
OR COOLING
DEMAND
*SUCTION
PRESSURE ABOVE
CUT-OUT OF
40 PSIG
CONTACTOR
ENERGIZED
SUCTION
PRESSURE
CUT-OUT IS
IGNORED FOR
90 SECONDS
SUCTION PRESSURE
ABOVE CUT-OUT
OF 40 PSIG
CONTACTOR
DE-ENERGIZED
ANTI-SHORT
CYCLE TIMER
BEGINS
INCREMENT
5-STRIKE
COUNTER
1
LED ALERT
CODE / OR
MODERATE
ALERT 410
DISPLAYED
ANTI-SHORT
CYCLE TIMER
ENDS
CONTACTOR
ENERGIZED
WAITING FOR
PRESSURE
TO RISE ABOVE
90 PSIG
IS BYPASSED IF OUTDOOR
AMBIENT TEMPERATURE IS 15ºF
OR BELOW
SUCTION PRESSURE CUT-OUT
3
5-STRIKE
COUNTER
REACHES 5
WITHIN A SINGLE
Y1 DEMAND
LOW
PRESSURE
LOCKOUT
LED ALERT
CODE / OR
CRITICAL
ALERT 411
DISPLAYED
SERVICE
REQUIRED
2
LED ALERT
CODE / OR
MODERATE
ALERT 410
DISPLAYED
SERVICE
REQUIRED
2
NORMAL
OPERATION
YES
YES
NO
NO
NO
YES
YES
1.
The thermostat terminates demand when the contactor
is de-energized. If demand is satisfied when alarm is
not active, the 5-strike counter resets.
2.
door control (A175) R terminal.
3. The suction pressure cut-out of 40 psig is ignored by the
system when
the outdoor temperature is below 15°F.
SUCTION
PRESSURE ABOVE
CUT-IN OF
90 PSIG
NO
*Unit does not have a low pressure switch
and LPS terminals are not jumpered. The
unit has a suction pressure transducer that
emulates the low pressure switch with a
cut-out of 40 PSIG and a cut-in of 90 PSIG.
Figure 22. Suction Pressure Transducer (A168) Logic Sequence of Operation
Page 57
31-5000872 Rev. 0
Installation Instructions
UNIT SEQUENCE OF OPERATION
Y1 DEMAND
OR COOLING
DEMAND
HIGH
PRESSURE
SWITCH (S4)
CONTACTOR
ENERGIZED
HIGH
PRESSURE
SWITCH (S4)
CONTACTOR
DE-ENERGIZED
ANTI-SHORT
CYCLE TIMER
BEGINS
INCREMENT
5-STRIKE
COUNTER
1
LED ALERT
CODE / OR
MODERATE
ALERT 412
DISPLAYED
ANTI-SHORT
CYCLE TIMER
ENDS
HIGH
PRESSURE
SWITCH (S4)
WAITING FOR
PRESSURE
SWITCH TO
CLOSE
5-STRIKE
COUNTER
REACHES 5
WITHIN A SINGLE
Y1 DEMAND
HIGH
PRESSURE
SWITCH (S4)
LOCKOUT
LED ALERT
CODE / OR
CRITICAL
ALERT 413
CLEARED
SERVICE
REQUIRED
2
LED ALERT
CODE / OR
MODERATE
ALERT 412
DISPLAYED
NORMAL
OPERATION
CLOSED
CLOSED
OPEN
OPEN
OPEN
CLOSED
CLOSED
TOP CAP
SWITCH (S173)
CLOSED
SERVICE
REQUIRED
2
1. The thermostat terminates demand when the contactor is
de-energized. If demand is satisfied when alarm is not active, the
5-strike counter resets.
2. Lockouts can be reset by cycling power off to the outdoor control
(A175) R terminal.
Figure 23. High Pressure Switch (S4) Sequence of Operation (All Versions)
Page 58
31-5000872 Rev. 0
Installation Instructions
COMPONENT TESTING
Verifying High Pressure Switch and Low Pressure Protection Operation:
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127(±7KHNS22AGRHVQRWKDYHDORZSUHVVXUHVZLWFKDQG/36WHUPLQDOVDUHQRWMXPSHUHG7KHXQLWKDVD
VXFWLRQSUHVVXUHWUDQVGXFHUWKDWHPXODWHVWKHORZSUHVVXUHVZLWFKZLWKDFXWRXWRI36,*DQGDFXWLQRI36,*
7KLVSURYLGHWKHVDPHSURWHFWLRQDVDWUDGLWLRQORZSUHVVXUHVZLWFK,IWKHHYHQWWKHVXFWLRQSUHVVXUHWUDQVGXFHUIDLOV
EDFNXSSURWHFWLRQLVSURYLGHGE\WKHVXFWLRQWHPSHUDWXUHVHQVRUDQGZLOORSHQDW)
• Low Suction Pressure Protection±6HH¿JXUHIRUORZVXFWLRQSUHVVXUHSURWHFWLRQVHTXHQFHRIRSHUDWLRQ
• High Pressure Switch (HI-PS)±6HH¿JXUHIRUKLJKSUHVVXUHVZLWFKVHTXHQFHRIRSHUDWLRQ
Pressure Switch Event Settings
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• High Pressure (auto-reset)WULSDWSVLJUHVHWDW
• Low Suction Pressure Protection (Suction pressure transducer emulates LPS) (auto-reset)±WULSDWSVLJ
UHVHWDW
CHECKOUT – S4 High Pressure Switch
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WKHWZRWHUPLQDOVRIWKHSUHVVXUHVZLWFK,IWKHUHVLVWDQFHUHDGLQJLVRKPVWKHVZLWFKLVFORVHG
Figure 24. Verifying High Pressure Switch Operation
Verifying Suction Pressure Transducer Operation
8VLQJDPXOWLPHWHUVHWWR9'&ZLWKWKH6XFWLRQ3UHVVXUH7UDQVGXFHUFRQQHFWHGWRWKH6XFW3SLQFRQQHFWRURQ
WKHFRQWUROERDUG3LQ5HGZLUH9'&WR3LQ%ODFNZLUH*1'VKRXOGUHDG9'&FRQWLQXRXV3LQ%OXH
ZLUHRXWSXWIURPWUDQVGXFHUWR3LQ%ODFN*1'VKRXOGUHDGWR9'&DQGZLOOYDU\GHSHQGLQJRQVXFWLRQ
SUHVVXUHPHDVXUHG6HH7DEOHRQQH[WSDJH
VDC
Figure 25. Suction Pressure Transducer Voltage
6+LJK3UHVVXUH6ZLWFK
Page 59
31-5000872 Rev. 0
Installation Instructions
COMPONENT TESTING (cont)
Table 10. Suction Pressure Transducer Output Voltage Table
Suction Pressure
(PSIG)
DC Voltage Output
(Pin 2 to Pin 3)
Suction Pressure
(PSIG)
DC Voltage Output
(Pin 2 to Pin 3)
0 110 2.69
10 0.69 120 2.89
20 0.89 130 3.09
30 1.09 3.29
1.29 150
50 160 3.69
60 1.69 170 3.89
70 1.89 180
80 2.09 190
90 2.29 200
100 210
Verifying Liquid Pressure Transducer Operation
8VLQJDPXOWLPHWHUVHWWR9'&ZLWKWKH/LTXLG3UHVVXUH7UDQVGXFHUFRQQHFWHGWRWKH/LT3SLQFRQQHFWRURQ
WKHFRQWUROERDUG3LQ5HGZLUH9'&WR3LQ%ODFNZLUH*1'VKRXOGUHDG9'&FRQWLQXRXV3LQ%OXH
ZLUHRXWSXWIURPWUDQVGXFHUWR3LQ%ODFN*1'VKRXOGUHDGWR9'&DQGZLOOYDU\GHSHQGLQJRQOLTXLGa
SUHVVXUHPHDVXUHG6HH 7DEOHRQQH[WSDJH
VDC
Figure 26. Liquid Pressure Transducer Voltage
Page 60
31-5000872 Rev. 0
Installation Instructions
COMPONENT TESTING (cont)
Table 11. Liquid Pressure Transducer Output Voltage Table
Liquid Pressure
(PSIG)
DC Voltage Output
(Pin 2 to Pin 3)
Liquid Pressure
(PSIG)
DC Voltage Output
(Pin 2 to Pin 3)
Liquid Pressure
(PSIG)
DC Voltage Output
(Pin 2 to Pin 3)
0 0.5 210 1.9 3.3
10 0.57 220 1.97 3.37
20 0.63 230 2.03
30 0.7 2.1 3.5
0.77 250 2.17 3.57
50 0.83 260 2.23 3.63
60 0.9 270 2.3 3.7
70 0.97 280 2.37 3.77
80 1.03 290 500 3.83
90 1.1 300 2.5 510 3.9
100 1.17 310 2.57 520 3.97
110 1.23 320 2.63 530
120 1.3 330 2.7
130 1.37 2.77 550
350 2.83 560
150 1.5 360 2.9 570
160 1.57 370 2.97 580
170 1.63 380 3.03 590
180 1.7 390 3.1 600
190 1.77 3.17
200 1.83 3.23
Page 61
31-5000872 Rev. 0
Installation Instructions
COMPONENT TESTING (cont)
Y1 DEMAND
OR COOLING
DEMAND
*SUCTION
PRESSURE ABOVE
CUT-OUT OF
40 PSIG
CONTACTOR
ENERGIZED
SUCTION
PRESSURE
CUT-OUT IS
IGNORED FOR
90 SECONDS
SUCTION PRESSURE
ABOVE CUT-OUT
OF 40 PSIG
CONTACTOR
DE-ENERGIZED
ANTI-SHORT
CYCLE TIMER
BEGINS
INCREMENT
5-STRIKE
COUNTER
1
LED ALERT
CODE / OR
MODERATE
ALERT 410
DISPLAYED
ANTI-SHORT
CYCLE TIMER
ENDS
CONTACTOR
ENERGIZED
WAITING FOR
PRESSURE
TO RISE ABOVE
90 PSIG
IS BYPASSED IF OUTDOOR
AMBIENT TEMPERATURE IS 15ºF
OR BELOW
SUCTION PRESSURE CUT-OUT
3
5-STRIKE
COUNTER
REACHES 5
WITHIN A SINGLE
Y1 DEMAND
LOW
PRESSURE
LOCKOUT
LED ALERT
CODE / OR
CRITICAL
ALERT 411
DISPLAYED
SERVICE
REQUIRED
2
LED ALERT
CODE / OR
MODERATE
ALERT 410
DISPLAYED
SERVICE
REQUIRED
2
NORMAL
OPERATION
YES
YES
NO
NO
NO
YES
YES
1.
The thermostat terminates demand when the contactor
is de-energized. If demand is satisfied when alarm is
not active, the 5-strike counter resets.
2.
Lockouts can be reset by cycling power off to the
outdoor control (A175) R terminal.
3. The suction pressure cut-out of 40 psig is ignored by the
system when
the outdoor temperature is below 15°F.
SUCTION
PRESSURE ABOVE
CUT-IN OF
90 PSIG
NO
*Unit does not have a low pressure switch
and LPS terminals are not jumpered. The unit has a
suction pressure transducer that emulates the low
pressure switch with a cut-out of 40 PSIG and a
cut-in of 90 PSIG.
Figure 27. Low Pressure Switch Emulated by Suction Pressure Transducer Sequence of Operation (All Units)
Page 62
31-5000872 Rev. 0
Installation Instructions
COMPONENT TESTING (cont)
Y1 DEMAND
HIGH
PRESSURE
SWITCH (S4)
CONTACTOR
ENERGIZED
HIGH
PRESSURE
SWITCH (S4)
CONTACTOR
DE-ENERGIZED
ANTI-SHORT
CYCLE TIMER
BEGINS
INCREMENT
5-STRIKE
COUNTER
1
LED ALERT
CODE / OR
MODERATE
ALERT 412
DISPLAYED
ANTI-SHORT
CYCLE TIMER
ENDS
HIGH
PRESSURE
SWITCH (S4)
WAITING FOR
PRESSURE
SWITCH TO
CLOSE
5-STRIKE
COUNTER
REACHES 5
WITHIN A SINGLE
Y1 DEMAND
HIGH
PRESSURE
SWITCH (S4)
LOCKOUT
LED ALERT
CODE / OR
CRITICAL
ALERT 413
CLEARED
SERVICE
REQUIRED
2
LED ALERT
CODE / OR
MODERATE
ALERT 412
DISPLAYED
NORMAL
OPERATION
CLOSED
CLOSED
OPEN
OPEN
OPEN
CLOSED
CLOSED
TOP CAP
SWITCH (S173)
CLOSED
SERVICE
REQUIRED
2
1. The thermostat will terminate demand when the contactor is
de-energized. If demand is satisfied when alarm is not active, the
5-strike counter will reset.
2. Lockouts can be reset by cycling power off to the outdoor control's
(A175) R terminal.
Figure 28. High Pressure Switch (S4) Sequence of Operation (All Versions)
Page 63
31-5000872 Rev. 0
Installation Instructions
COMPONENT TESTING (cont)
High Pressure Switch Protection Errors
Table 12. Outdoor Control 7-Segment Display Alert Codes
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WKHQV\VWHPVWDWXVFRGHVDUHGLVSOD\HG$OHUWFRGHVDUHDOVRGLVSOD\HGRQWKHFRPPXQLFDWLQJWKHUPRVWDW
Alert
Codes
Priority Alarm Description Possible Causes and Clearing Alarm
( 0RGHUDWH 7KHRXWGRRUXQLW
KLJKSUHVVXUH
VZLWFKKDVRSHQHG
8QLWSUHVVXUHLVDERYHWKHXSSHUOLPLW6\VWHPLVVKXWGRZQ7KHKLJKSUHVVXUH
VZLWFKRSHQVDW36,*DQGFORVHVDW36,*&RQ¿UPWKDWWKHV\VWHPLV
SURSHUO\FKDUJHGZLWKUHIULJHUDQW&KHFNIRUFORJJHG7;9EORFNDJHWRLQGRRUXQLW
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EHVHWWRRORZ
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VZLWFKKDVRSHQHG
WLPHVZLWKLQRQH
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ORFNHGRXW
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DODUPFOHDUVDIWHULQGRRUSRZHUUHVHW9$&SRZHUVRXUFHWR2XWGRRU&RQWURO
Compressor Operation, Checkout and Status / Error Codes
OPERATION:
The NS22AXQLWVXVHYDULDEOHFDSDFLW\URWDU\FRPSUHVVRUVVSHFL¿FDOO\GHVLJQHGIRUXQLWDU\VSOLWVV\VWHPVDQGDUH
DSSURYHGIRUXVHZLWK5%UHIULJHUDQW
CHECKOUT:
NOTE7KHFRPSUHVVRUPRWRUZLQGLQJUHVLVWDQFHLVWKHQRPLQDOUHVLVWDQFHDW):KHQPHDVXULQJFRPSUHVVRU
PRWRUZLQGLQJUHVLVWDQFHWKHSULPDU\FRQFHUQLVWKHZLQGLQJUHVLVWDQFHEHWZHHQWKHGLႇHUHQWVHWVRIWHUPLQDOVLV
ZLWKLQRIHDFKRWKHU7KHDFWXDOZLQGLQJUHVLVWDQFHLVLPSDFWHGE\WHPSHUDWXUHUHIULJHUDQWDQGRLO'RQRW
DXWRPDWLFDOO\FRQGHPQDFRPSUHVVRUEHFDXVHWKHPHDVXUHGUHVLVWDQFHLVVOLJKWO\KLJKHURUORZHUWKDQWKHQRPLQDO
UHVLVWDQFH&KHFNIRUVKRUWHGRSHQZLQGLQJVDQGIRUVKRUWVWRJURXQGGXULQJWHVWLQJ
0.883 0.883
0.705
0.7050.705
024/-036
048/-060
0.883
Figure 29. Compressor Operation, Checkout and Status/Error Codes
3DJH
31-5000872 Rev. 0
Installation Instructions
COMPONENT TESTING (cont)
IMPORTANT: ,I FRPSUHVVRUUHSODFHPHQW LV UHTXLUHGUHPRYH WKHFRPSUHVVRUWKURXJK WKHWRSRI WKHXQLW5HPRYDO
WKURXJKWKHDFFHVVSDQHOLVQRWSRVVLEOH
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0RWRU
CUTAWAY OF TYPICAL ROTARY
COMPRESSOR (NOT ACTUAL
NS22A COMPRESSOR)
NS22A ROTARY COMPRESSOR)
Figure 30. NS22A Rotary Compressor Detail (All Models except-060)
Page 65
31-5000872 Rev. 0
COMPONENT TESTING (cont)
STAUS CODES::KHQWKHFRPSUHVVRULVUXQQLQJWKHVHJPHQWGLVSOD\ZLOOVKRZWKHFRPSUHVVRUFDSDFLW\:KHQ
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Figure 31. Compressor Operation, Checkout and Status/Error Codes
Installation Instructions
Page 66
31-5000872 Rev. 0
Table 13. Outdoor Control 7-Segment Display Alert Codes - Compressor
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Alert
Code
Inverter
Code
Inverter Flash
Code
Priority
Condition
Actual Displayed
Alert Text
Possible Causes and Clearing Alarm
Red
LED
Green
LED
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Installation Instructions
Page 67
31-5000872 Rev. 0
Installation Instructions
CRANKCASE HEATER, CHECKOUT AND STATUS / ERROR CODES
OPERATION:
CRANKCASE HEATER (HR1)
&RPSUHVVRUVLQWKHDQGXQLWVDUHHTXLSSHGZLWKD:FUDQNFDVHKHDWHU5HPDLQLQJXQLWVDUHHTXLSSHGZLWK
D:FUDQNFDVHKHDWHU
&UDQNFDVH+HDWHU7KHUPRVWDW
Figure 32. Belly-Band Crankcase Heater with Thermostat
CHECKOUT:
%HOO\%DQG&UDQNFDVH+HDWHU8VLQJPHWHUVHWRQRKPVFKHFNFUDQNFDVHKHDWHUUHVLVWDQFH,IUHVLVWDQFHLVRKPV
RULQ¿QLWHUHSODFHWKHFUDQNFDVHKHDWHU
Figure 33. Checking Belly-Band Crankcase Heater
Crankcase Heater Thermostat:$VWKHGHWHFWHGWHPSHUDWXUHFKDQJHVWKHUHVLVWDQFHDFURVVWKHVHQVRUFKDQJHV
NOTE±:KHQFKHFNLQJWKHRKPVDFURVVDVHQVRUEHDZDUHWKDWDVHQVRUVKRZLQJDUHVLVWDQFHYDOXHWKDWLVQRW
ZLWKLQWKHUDQJHPD\EHSHUIRUPLQJDVGHVLJQHG+RZHYHULIDVKRUWHGRURSHQFLUFXLWLVGHWHFWHGWKHVHQVRULV
IDXOW\WKHVHQVRUQHHGVWREHUHSODFHG
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31-5000872 Rev. 0
Installation Instructions
Figure 34. Checking Crankcase Heater Thermostat
STATUS CODE:
1RQH
ERROR CODES:
1RQH
Compressor Sound Cover
$OOXQLWVFRPHZLWKDVRIWVLGHGSRO\HWK\OHQHPROGHGRXWHUVKHOOFRPSUHVVRUVRXQGFRYHU7KHFRYHUKHOSVUHGXFH
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LQVWDOODWLRQRQWKHFRPSUHVVRU
Figure 35. Compressor Sound Cover
Suction Line Filter Drier
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PDWWHUZKLFKFDQOHDGWRFRPSUHVVRUIDLOXUH
Figure 36. Suction Line Filter Drier
Page 69
31-5000872 Rev. 0
Installation Instructions
TOP CAP SWITCH OPERATION, CHECKOUT AND STATUS / ERROR CODES
OPERATION:
Top Cap Thermal Sensor Switch (S173)
6RPHXQLWVDUHHTXLSSHGZLWKDFRPSUHVVRUPRXQWHGQRUPDOO\FORVHGWHPSHUDWXUHVZLWFKWKDWSUHYHQWVFRPSUHVVRU
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Figure 37. Top Cap Thermal Sensor Switch
CHECKOUT:
8VLQJDPXOWLPHWHUVHWWRRKPVZLWKWKHWHUPLQDOVGLVFRQQHFWHGIURPWKHV\VWHPFKHFNWKHUHVLVWDQFHEHWZHHQWKH
WZRWHUPLQDOVRIWKHWRSFDSVZLWFK,IWKHPHWHUGLVSOD\GRHVQRWFKDQJHWKHVZLWFKLVFORVHG,IWKHPHWHUGLVSOD\
JRHVWRLQ¿QLWHWKHVZLWFKLVRSHQ
S173
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7RS&DS6ZLWFK
Figure 38. Verifying Top Cap Thermal Sensor Switch
STATUS:
1RQH
Page 70
31-5000872 Rev. 0
Installation Instructions
ERROR:
Table 14. Outdoor Control 7-Segment Display Alert Codes - Top Cap Switch
6\VWHPIDXOWDQGORFNRXWFRGHVWDNHSUHFHGHQFHRYHUV\VWHPVWDWXVFRGHVFRROLQJKHDWLQJRSHUDWLQJSHUFHQWDJHVRUGHIURVW
GHKXPLGL¿FDWLRQ2QO\WKHODWHVWDFWLYHIDXOWRUORFNRXWFRGHVDUHGLVSOD\HGLISUHVHQW,IQRIDXOWRUORFNRXWFRGHVDUHDFWLYH
WKHQV\VWHPVWDWXVFRGHVDUHGLVSOD\HG$OHUWFRGHVDUHDOVRGLVSOD\HGRQWKHFRPPXQLFDWLQJWKHUPRVWDW
Alert
Codes
Priority Alarm Description Possible Causes and Clearing Alarm
( 0RGHUDWH
&RPSUHVVRU
WRSFDSVZLWFK
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OLPLW
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EORZHUPRWRUFRQ¿UPLQGRRUFRLOLVFOHDQ&KHFNWRPDNHVXUHWKHEOXHZLUHV
IURPWKHWRSWKHUPRVWDWGLGQRWJHWSXOOHGRႇRQHRIWKH73WHUPLQDORQWKH
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SRZHU
Reactor Operations, Checkout and Status / Error Codes
OPERATION:
5HDFWRU,QGXFWRURUFKRNHLVDSDVVLYHWZRWHUPLQDOHOHFWULFDOFRPSRQHQWWKDWVWRUHVHQHUJ\LQLWVPDJQHWLF¿HOG
5HDFWRUVDUHRQHRIWKHEDVLFFRPSRQHQWVXVHGLQHOHFWURQLFVZKHUHFXUUHQWDQGYROWDJHFKDQJHZLWKWLPHGXHWRWKH
DELOLW\RILQGXFWRUVWRGHOD\DQGUHVKDSHDOWHUQDWLQJFXUUHQWV
CHECKOUT:
Main Power ON±9ROWDJH,1UHDFWRUVKRXOGEHWKHVDPHDVWKHYROWDJH287:LWKPDLQSRZHU2))DQGUHDFWRU
GLVFRQQHFWHGIURPV\VWHPUHVLVWDQFHEHWZHHQOHDGVVKRXOGEHWKHVDPH
STATUS CODES:
1RQH
ERROR CODES:
1RQH
92/7$*(,1
92/7$*(287
Figure 39. Reactor
Outdoor Fan Operation and Checkout
OPERATION:
The NS22A XQLWVKDYHDYDULDEOHVSHHG(&0IDQPRWRU7KHYDULDEOHVSHHG(&0IDQPRWRULVFRQWUROOHGE\3:0IDQ
RXWSXWZKHQWKHFRPSUHVVRULVUXQQLQJDQGZLOOYDU\WKHIDQVSHHGWRPDWFKWKHFRPSUHVVRUFDSDFLW\
LOW AMBIENT OPERATION:
The NS22A XQLWVKDYHIDFWRU\LQVWDOOHGORZDPELHQWRSHUDWRUWKDWZLOOFRQWUROWKHFRQGHQVHUIDQPRWRUEDVHGXSRQ
OLTXLGOLQHWHPSHUDWXUH
The NS22A XQLWVKDYHDYDULDEOHVSHHG(&0IDQPRWRU7KHRXWGRRUFRQWUROZLOOEHJLQWRPRGXODWHWKHRXWGRRUIDQ
PRWRUVSHHGLVEHORZ)WRPDLQWDLQDOLTXLGOLQHVHQVRUWHPSHUDWXUHEHWZHHQ)DQG),IWKHOLTXLGOLQH
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Page 71
31-5000872 Rev. 0
Installation Instructions
CHECKOUT:
VAC Voltage Check
&KHFNIRU9$&SRZHUDWLQYHUWHUFRQWDFWRUUHGZLUHVVHHFigure 44).
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8VLQJWKHSXVKEXWWRQRQWKHFRQWUROHQWHUWKHFan Test ModeLQWKHField Test ModeE\SXVKLQJDQGKROGLQJ
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F\FOHRႇ
Figure 40. VAC Voltage Check
Page 72
31-5000872 Rev. 0
Installation Instructions
Outdoor Control Operation, Checkout and Status / Error Codes
OPERATION:
7KHRXWGRRUFRQWUROLVDPLFURSURFHVVRUEDVHGGHYLFHIRUXVHZLWKYDULDEOHFDSDFLW\FRPSUHVVRUVXSWRWRQV
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Figure 41. Outdoor Control Unit
STATUS CODES:
Table 15. Outdoor Control 7-Segment Display Alert Codes - Outdoor Control Status
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GHKXPLGL¿FDWLRQ2QO\WKHODWHVWDFWLYHIDXOWRUORFNRXWFRGHVDUHGLVSOD\HGLISUHVHQW,IQRIDXOWRUORFNRXWFRGHVDUHDFWLYH
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Alert
Codes
Priority Alarm Description Possible Causes and Clearing Alarm
E 600 &ULWLFDO
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WKHPD[LPXPSRZHUOHYHOXVDJHRIWKHRXWGRRUXQLW7KHIHDWXUHLVDFWLYDWHGE\
DSSO\LQJYROWV$&SRZHUWRWKH/DQG&WHUPLQDOVRQWKHRXWGRRUFRQWURO
E 601 &ULWLFDO
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Low temperature Protection:2XWGRRUXQLWZLOOQRWRSHUDWHZKHQWKHRXWGRRU
WHPSHUDWXUHLVDWRUEHORZ)&,IWKHXQLWLVRSHUDWLQJDQGWKHRXWGRRU
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2XWGRRUXQLWDPELHQWVHQVRUSURYLGHVWHPSHUDWXUHUHDGLQJV
Page 73
31-5000872 Rev. 0
Installation Instructions
ERROR CODES:
Table 16. Outdoor Control 7-Segment Display Alert Codes - Outdoor Control Errors
6\VWHPIDXOWDQGORFNRXWFRGHVWDNHSUHFHGHQFHRYHUV\VWHPVWDWXVFRGHVFRROLQJKHDWLQJRSHUDWLQJSHUFHQWDJHVRUGHIURVW
GHKXPLGL¿FDWLRQ2QO\WKHODWHVWDFWLYHIDXOWRUORFNRXWFRGHVDUHGLVSOD\HGLISUHVHQW,IQRIDXOWRUORFNRXWFRGHVDUHDFWLYH
WKHQV\VWHPVWDWXVFRGHVDUHGLVSOD\HG$OHUWFRGHVDUHDOVRGLVSOD\HGRQWKHFRPPXQLFDWLQJWKHUPRVWDW
Alert
Codes
Priority Alarm Description Possible Causes and Clearing Alarm
E 105 0RGHUDWH
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PRVWFDVHVHUURUVDUHUHODWHGWRHOHFWULFDOQRLVH0DNHVXUHKLJKYROWDJHSRZHU
LVVHSDUDWHGIURP56%XV&KHFNIRUPLVZLUHGDQGRUORRVHFRQQHFWLRQVEHWZHHQ
WKHVWDWLQGRRUXQLWDQGRXWGRRUXQLW&KHFNIRUDKLJKYROWDJHVRXUFHRIQRLVH
FORVHWRWKHV\VWHP)DXOWFOHDUVDIWHUFRPPXQLFDWLRQLVUHVWRUHG
E 120 0RGHUDWH
7KHUHLVDGHOD\
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V\VWHP
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UHVSRQGVWRDQ\LQTXLU\
E 125 &ULWLFDO
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SUHYHQWVRSHUDWLRQDQGLVSHUVLVWHQW7KHDODUPIDXOWLVFOHDUHGVHFRQGV
DIWHUWKHIDXOWUHFRYHUV
E 131 &ULWLFDO
7KHRXWGRRUXQLW
FRQWUROSDUDPHWHUV
DUHFRUUXSWHG
5HFRQ¿JXUHWKHV\VWHP5HSODFHWKHFRQWUROLIKHDWLQJRUFRROLQJLVQRWDYDLODEOH
E 132 &ULWLFDO
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3DJH
31-5000872 Rev. 0
Installation Instructions
UNIT SENSOR OPERATION, CHECKOUT AND STATUS /ERROR CODES
OPERATION:
6-Pin Sensor Harness (DIS, AMB, COIL)
• Discharge Sensor (R7 - No Sensor) - 7KHUHLVQRVHQVRUORFDWHGRQSRVLWLRQVDQGRIWKHFRQQHFWRU$.
2KPUHVLVWRULQVWDOOHGEHWZHHQSLQVDQGRQWKHFDEOHKDUQHVVSURYLGHVFRQWLQXLW\IRUWKLVFLUFXLW
• Ambient Temperature Sensor (RT13) - $PELHQWWHPSHUDWXUHVDVUHDGE\WKHDPELHQWWHPSHUDWXUHVHQVRU
FRQQHFWHGWRSLQDQGSLQZKLFKDUHEHORZ)&RUDERYH)&WULJJHUDIDXOWFRQGLWLRQ,IWKH
DPELHQWVHQVRULVRSHQVKRUWHGRURXWRIWKHWHPSHUDWXUHUDQJHRIWKHVHQVRUWKHFRQWUROGLVSOD\VWKHDSSURSULDWH
DOHUWFRGH+HDWLQJDQGFRROLQJRSHUDWLRQLVDOORZHGLQWKLVIDXOWFRQGLWLRQ
• Coil Temperature Sensor (R7 - No Sensor) - 7KHUHLVQRVHQVRUORFDWHGRQSRVLWLRQWRSRVLWLRQRIWKH
FRQQHFWRU$.RKPUHVLVWRULVLQVWDOOHGEHWZHHQSLQVDQGRQWKHFDEOHKDUQHVVDQGSURYLGHVFRQWLQXLW\IRUWKLV
FLUFXLW
4-Pin Suction Temperature Sensor / Liquid Temperature Sensor Harness
• Suction Line Sensor (RT41) - 6XFWLRQOLQHWHPSHUDWXUHLVUHDGE\WKHVXFWLRQOLQHWHPSHUDWXUHVHQVRUEHWZHHQ
3LQVDQG3LQRIWKHSLQVHQVRUKDUQHVV1RPLQDO5HVLVWDQFHRIWKHVHQVRULV.RKPVDW)7KHFRQWUROZLOO
GLVSOD\DUH(HUURUFRGHLIWKHVHQVRUUHDGVRSHQRUVKRUWHGIRUKRXUV&RROLQJRSHUDWLRQLVDOORZHGZLWKWKLV
IDXOW
• Liquid Line Temperature Sensor (RT36) - /LTXLGOLQHWHPSHUDWXUHLVUHDGE\WKHOLTXLGOLQHWHPSHUDWXUHVHQVRU
EHWZHHQ3LQVDQG3LQRIWKHSLQVHQVRUKDUQHVV1RPLQDO5HVLVWDQFHRIWKHVHQVRULV.RKPVDW)
7KHFRQWUROZLOOGLVSOD\DUH(HUURUFRGHLIWKHVHQVRUUHDGVRSHQRUVKRUWHGIRUKRXUV&RROLQJRSHUDWLRQLV
DOORZHGZLWKWKLVIDXOW
SENSOR TEMP RANGE ºF (ºC)
RESISTANCE VALUES
RANGE (OHMS)
PIN# / WIRE
SLEEVE COLOR
1RQH 16 .2KPV1RPLQDO DQG
2XWGRRU$PELHQW
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Figure 42. 7HPSHUDWXUH6HQVRU6SHFL¿FDWLRQ
Page 75
31-5000872 Rev. 0
Installation Instructions
CHECKOUT:
6HQVRUVFRQQHFWWRWKHRXWGRRUFRQWUROWKURXJKD¿HOGUHSODFHDEOHKDUQHVVDVVHPEO\WKDWSOXJVLQWRWKHRXWGRRUFRQWURO
7KURXJKWKHVHQVRUVWKHFRQWUROGHWHFWVRXWGRRUDPELHQWFRLODQGOLTXLGWHPSHUDWXUHIDXOWFRQGLWLRQV$VWKHGHWHFWHG
WHPSHUDWXUHFKDQJHVWKHUHVLVWDQFHDFURVVWKHVHQVRUFKDQJHV&KHFNVHQVRURSHUDWLRQE\UHDGLQJRKPVDFURVVSLQV
VKRZQLQFigure 49.
NOTE±:KHQFKHFNLQJWKHRKPVDFURVVDVHQVRUEHDZDUHWKDWDVHQVRUVKRZLQJDUHVLVWDQFHYDOXHWKDWLVQRWZLWKLQ
WKHUDQJHVKRZQLQFigure 49PD\EHSHUIRUPLQJDVGHVLJQHG+RZHYHULIDVKRUWHGRURSHQFLUFXLWLVGHWHFWHGWKHQ
WKHVHQVRUPD\EHIDXOW\DQGWKHVHQVRUKDUQHVVZLOOQHHGWREHUHSODFHG
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/LTXLG7HPSHUDWXUH6HQVRU
6XFWLRQ7HPSHUDWXUH6HQVRU
&UDQNFDVH7KHUPRVWDW
Figure 43. Temperature Sensor Locations
Page 76
31-5000872 Rev. 0
Installation Instructions
Table 17. Ambient and Liquid Line Sensors Temperature / Resistance Range
Degrees Fahrenheit ºF Resistance Degrees Fahrenheit ºF Resistance Degrees Fahrenheit ºF Resistance Degrees Fahrenheit ºF Resistance
136.3 2680 56.8 16657 21.6 -11.3 123152
133.1 2859 56.0 16973 21.0 -11.9 125787
130.1 55.3 17293 20.5 -12.6 128508
127.3 3223 17616 20.0 -13.2 131320
53.9 -13.9
122.1 3592 53.2 18273 18.9
119.7 3779 52.5 18607 -15.2
117.5 3968 51.9 17.8 -15.9
115.3 51.2 19287 17.3 -16.5
113.2 50.5 19633 16.8 50873 -17.2 150378
111.2 19982 16.3 51686 -17.9
109.3 20336 15.7 -18.6 157708
20695 15.2 53356 -19.3 161588
105.6 5136 21057 -20.1
103.9 5336 55089 -20.8
102.3 5539 21795 13.6 55979 -21.5
100.6 22171 13.1 56887 -22.3 178762
99.1 22551 12.5 57811 -23.0 183522
97.6 6157 22936 12.0 -23.8
96.1 6367 23326 11.5 59715 193691
6578 23720 11.0 199130
93.3 6792 61693 -26.2
92.0 7007 9.9 62712 -27.0 210805
90.6 7225 9.3 63752 -27.8 217080
8.8 -28.7 223677
88.1 7666 25769 8.3 65895 -29.5 230621
86.9 7890 39.9 26195 7.7 67000
85.7 8115 39.3 26626 7.2 68128 -31.3
38.7 27063 6.7 69281 -32.2
8573 38.1 27505 6.1 -33.2
82.3 8806 37.5 5.6 71661 271655
81.2 37.0 5.0 72890 -35.1
80.1 9277 28868 -36.1
79.0 9516 35.8 29335 3.9 -37.1
78.0 9757 35.2 29808 -38.2
77.0 10001 30288 2.8 78090 -39.2
76.0 2.3
75.0 33.5 31267 1.7 80873
33.0 31766 1.2
73.1 11000 32273 0.6 83790
72.2 11256 31.9 32787 0.0 85302
71.3 11515 31.3 33309 -0.5 86852
11776 30.7 33837 -1.1
69.5 30.2 -1.7 90068
68.6 12306 29.6 -2.2 91738
67.7 12575 29.1 -2.8
66.9 28.6 36031 95211
66.0 13122 28.0 36600 97016
65.2 27.5 37177 98870
13681 26.9 -5.2 100775
63.6 38359 -5.7 102733
62.8 25.8 38963 -6.3
62.0 25.3 39577 -6.9 106817
61.2 -7.5
60.5 15129 -8.2
59.7 23.7 -8.8
59.0 15730 23.2 115727
58.2 16036 22.6 -10.0 118126
57.5 22.1 -10.6 120600
Page 77
31-5000872 Rev. 0
Installation Instructions
ERROR CODES:
Table 18. Outdoor Control 7-Segment Display Alert Codes - Outdoor Control Errors
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OPERATION OF COMPONENTS:
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CONVERTER:
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POWER FACTOR CORRECTION (PFC) CIRCUIT:
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COMMUNICATION CONTROL CIRCUIT:
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STATUS CODES:
Table 19. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
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Page 78
31-5000872 Rev. 0
Installation Instructions
Table 20. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest
active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed.
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Page 79
31-5000872 Rev. 0
Installation Instructions
Table 20. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest
active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed.
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Code
Inverter Flash
Code
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Red LED
Green
LED
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Page 80
31-5000872 Rev. 0
Table 20. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest
active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed.
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FRQWDFWRUZKLFKLQWHUUXSWVSRZHUWRWKHLQYHUWHUDQGWKHQUHDSSO\SRZHU
( 12 ÀDVK
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FRPSUHVVRUWRRSHUDWHZLWKLQGHVLJQSDUDPHWHUV7\SLFDOO\WKHLQYHUWHUZLOOPDNHD
PLQRUVSHHGUHGXFWLRQRI+]DSSUR[LPDWHO\DVSHHGUHGXFWLRQIRUDEULHI
SHULRGRIWLPHDQGWRUHGXFHWKHLQSXWFXUUHQWDQGZLOOWKHQUHVXPHQRUPDORSHUDWLRQ
Installation Instructions
Page 81
31-5000872 Rev. 0
Table 20. Outdoor Control 7-Segment Display Alert Codes and Inverter LED Flash Codes
NOTE - System fault and lockout codes take precedence over system status codes (cooling, heating operating percentages or defrost/dehumidification). Only the latest
active fault or lockout codes are displayed (if present). If no fault or lockout codes are active, then system status codes are displayed.
*) *DV)XUQDFH$+ $LU+DQGOHU,' ,QGRRUXQLW*)RU$++3 +HDW3XPS$& $LU&RQGLWLRQHU2' 2XWGRRU8QLW$&RU+3=$ =RQHV\VWHPDQG76 7KHUPRVWDW
Alert
Code
Inverter
Code
Inverter Flash
Code
Priority Alarm Description Possible Causes and Clearing Alarm
Red LED
Green
LED
( 13 ÀDVK
3
ÀDVKHV
0LQRU
+HDWVLQNWHPSHUDWXUH
LVDSSURDFKLQJOLPLW
7KHFRPSUHVVRUVSHHG
DXWRPDWLFDOO\VORZV
WRUHGXFHKHDWVLQN
WHPSHUDWXUH7KHFRQWURO
VHWVLQGRRU&)0DQG
RXWGRRU530WRYDOXHV
DFFRUGLQJWRGHPDQG
SHUFHQWDJHUDWKHUWKDQ
WKHDFWXDO+]$ODUPLV
DXWRPDWLFDOO\FOHDUHG
7KLVHUURUFRGHLVSULPDULO\IRULQIRUPDWLRQDOSXUSRVHVDVWKHLQYHUWHUFRQWUROVWKH
FRPSUHVVRUVSHHGWRRSHUDWHZLWKLQGHVLJQSDUDPHWHUV7\SLFDOO\WKHLQYHUWHUZLOOPDNH
DPLQRUVSHHGUHGXFWLRQRI+]DSSUR[LPDWHO\DVSHHGUHGXFWLRQIRUDEULHI
SHULRGRIWLPHDQGWRUHGXFHWKHKHDWVLQNWHPSHUDWXUHDQGZLOOWKHQUHVXPHQRUPDO
RSHUDWLRQ7KLVPD\RFFXUDWKLJKRXWGRRUWHPSHUDWXUHVDERYH)IRUEULHISHULRGV
RIWLPH±PLQXWHVDQGLVQRUPDODQGH[SHFWHGRSHUDWLRQRIWKHLQYHUWHUFRQWUROOLQJ
WKHFRPSUHVVRUVDIHO\ZLWKLQGHVLJQSDUDPHWHUV
7KHLQYHUWHU¿QQHGDOXPLQXPKHDWVLQNLVORFDWHGRQWKHEDFNVLGHRIWKHLQYHUWHULQWKH
FRQGHQVHUDLUVWUHDP,IWKHDOHUWFRGHRFFXUIUHTXHQWO\HVSHFLDOO\DWORZHURXWGRRU
WHPSHUDWXUHVFKHFNWKHKHDWVLQNIRUGHEULVWKDWPD\UHGXFHKHDWWUDQVIHURUSRVVLEOH
REVWUXFWLRQVWKDWPD\LPSDFWDLUÀRZDFURVVWKHKHDWVLQN
7KHLQYHUWHUZLOOEHJLQWREULHÀ\UHGXFHWKHFRPSUHVVRUVSHHGZKHQWKHKHDWVLQN
WHPSHUDWXUHULVHVDERYH)DQGZLOODOORZWKHLQYHUWHUWRUHVXPHWKHUHTXHVWHG
FRPSUHVVRUGHPDQGVSHHGRQFHWKHLQYHUWHUKHDWVLQNUHDFKHV)
( ÀDVK
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VSHHGDXWRPDWLFDOO\
VORZV7KHFRQWURO
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RXWGRRU530WRYDOXHV
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WKHDFWXDO+]$ODUPLV
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FRPSUHVVRUWRRSHUDWHZLWKLQGHVLJQSDUDPHWHUV$OHUWFRGHW\SLFDOO\RFFXUVDW
VWDUWXSDVWKHFRPSUHVVRUDVWKHFXUUHQWO\LQFUHDVHVUDSLGO\GXULQJVWDUWXS
7KHLQYHUWHUZLOOUHGXFHWKHFRPSUHVVRUVSHHGE\K]DQGVORZWKHFRPSUHVVRU
UDPSXSVSHHGWRWKHUHTXHVWHGFRPSUHVVRUGHPDQGFDSDFLW\7KLVLVQRUPDODQG
H[SHFWHGRSHUDWLRQRIWKHLQYHUWHUWRFRQWUROWKHFRPSUHVVRUZLWKLQGHVLJQSDUDPHWHUV
,QPRVWFDVHVWKHDOHUWFRGHGRHVQRWUHTXLUHDQ\DGGLWLRQDOVHUYLFHRUGLDJQRVWLF
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7KLVHUURUFRGHLVSULPDULO\IRULQIRUPDWLRQDOSXUSRVHVDVWKHLQYHUWHUFRQWUROVWKH
FRPSUHVVRUWRRSHUDWHZLWKLQGHVLJQSDUDPHWHUV$OHUWFRGHW\SLFDOO\RFFXUVDW
VWDUWXSDVWKHFRPSUHVVRUDVWKHFXUUHQWO\LQFUHDVHVUDSLGO\GXULQJVWDUWXS
7KHLQYHUWHUZLOOUHGXFHWKHFRPSUHVVRUVSHHGE\K]DQGVORZWKHFRPSUHVVRU
UDPSXSVSHHGWRWKHUHTXHVWHGFRPSUHVVRUGHPDQGFDSDFLW\7KLVLVQRUPDODQG
H[SHFWHGRSHUDWLRQRIWKHLQYHUWHUWRFRQWUROWKHFRPSUHVVRUZLWKLQGHVLJQSDUDPHWHUV
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Installation Instructions
Page 82
31-5000872 Rev. 0
Installation Instructions
SYSTEM REFRIGERANT
IMPORTANT
7KHV\VWHPPXVWEHRSHUDWLQJDWIXOOFDSDFLW\GXULQJ
FKDUJLQJ8VLQJWKH&KDUJH0RGH-XPSHURQWKHRXWGRRU
FRQWUROHQVXUHVWKHXQLWLVUXQQLQJDWFDSDFLW\
&RQ¿UPRXWGRRUXQLWUXQQLQJFDSDFLW\
7KLVVHFWLRQRXWOLQHVWKHSURFHGXUHVWR
&RQQHFWDJDXJHVHWIRUWHVWLQJDQGFKDUJLQJDV
LOOXVWUDWHGLQFigure 44.
&KHFNDQGDGMXVWLQGRRUDLUÀRZDVGHVFULEHGLQ
Figure 45.
$GGRUUHPRYHUHIULJHUDQWXVLQJWKHZHLJKLQPHWKRG
VKRZQLQFigure 46.
9HULI\WKHFKDUJHXVLQJWKHVXEFRROLQJPHWKRG
GHVFULEHGLQFigure 47.
IMPORTANT:8QLWPXVWEHRSHUDWLQJDWFDSDFLW\
WREHFKDUJHGSURSHUO\
ADDING OR REMOVING REFRIGERANT
7KLVV\VWHPXVHV5%UHIULJHUDQWZKLFKRSHUDWHVDW
VOLJKWO\ORZHUSUHVVXUHVWKDQ5$
INDOOR AIRFLOW CHECK
&KHFNDLUÀRZXVLQJWKH'HOWD7'7SURFHVVXVLQJWKH
LOOXVWUDWLRQLQFigure 45.
CHARGE MODE JUMPER
7RLQLWLDWHWKHNS22A&KDUJH0RGHIXQFWLRQLQVWDOO
WKHMXPSHUDFURVVWKHWZR&KDUJH0RGH3LQV&+5*
02'(RQWKHRXWGRRUFRQWURO7KH&KDUJH0RGHFDQ
EHXVHGZKHQFKDUJLQJWKHV\VWHPZLWKUHIULJHUDQW
FKHFNLQJWKHUHIULJHUDQWFKDUJHSXPSLQJGRZQWKH
V\VWHPDQGSHUIRUPLQJRWKHUVHUYLFHSURFHGXUHVWKDW
UHTXLUHVRXWGRRUXQLWRSHUDWLRQDWFDSDFLW\
Charge Mode Operation with a Conventional 24VAC
Non-Communicating Thermostat
2QDSSOLFDWLRQVZLWKDFRQYHQWLRQDO9$&QRQ
FRPPXQLFDWLQJWKHUPRVWDWWKHFKDUJHPRGHMXPSHU
PXVWEHLQVWDOOHGRQWKH&KDUJH0RGH3LQVDIWHU
SURYLGLQJD<FRROLQJGHPDQGWRWKHNS22AWRLQLWLDWH
WKH&KDUJH0RGH
$FRROLQJEORZHUGHPDQGPXVWDOVREHSURYLGHGWR
LQLWLDWHEORZHURSHUDWLRQRQWKHFRROLQJVSHHGRQWKH
LQGRRUXQLW7KHFRPSUHVVRUDQGRXWGRRUIDQPRWRUZLOO
RSHUDWHDWFDSDFLW\7RH[LWWKHFKDUJLQJPRGH
UHPRYHWKH&KDUJH0RGH-XPSHUDQGUHPRYHWKH<
&RROLQJGHPDQGDQGLQGRRUEORZHUGHPDQG7KH&KDUJH
0RGHKDVDPD[LPXPWLPHRIPLQXWHVDQGZLOO
DXWRPDWLFDOO\H[LWWKHFKDUJHPRGHDIWHUPLQXWHVLV
WKHFKDUJHPRGHMXPSHULVOHIWLQSODFH
Page 83
31-5000872 Rev. 0
Installation Instructions
GUAGE SET
CONNECTIONS FOR TESTING AND CHARGING
A
C
D
B
MANIFOLD GAUGE SET
HIGHLOW
2XWGRRU8QLW
6XFWLRQ/LQH
'LJLWDO6FDOH
5HIULJHUDQW7DQN
&KDUJHLQ
/LTXLG3KDVH
7HPSHUDWXUH
6HQVRU
7R/LTXLG/LQH
6HUYLFH3RUW
7HPSHUDWXUH6HQVRU
/LTXLG/LQH
Figure 44. Gauge Set Connections
A. &/26(0$1,)2/'*$8*(6(79$/9(6$1'&211(&77+(&(17(5+26(72$&</,1'(52)5%
SET FOR LIQUID PHASE CHARGING.
B. &211(&77+(0$1,)2/'*$8*(6(76/2:35(6685(6,'(727+(68&7,21/,1(6(59,&(3257
C. &211(&77+(0$1,)2/'*$8*(6(76+,*+35(6685(6,'(727+(/,48,'/,1(6(59,&(3257
D. 326,7,217(03(5$785(6(162521/,48,'/,1(1($5/,48,'/,1(6(59,&(3257
3DJH
31-5000872 Rev. 0
AIRFLOW
INDOOR COIL
Figure 45. &KHFNLQJ,QGRRU$LUÀRZRYHU(YDSRUDWRU&RLOXVLQJ'HOWD7&KDUW
8VHWKHWEIGH-INPHWKRGIRUDGGLQJLQLWLDOUHIULJHUDQWFKDUJHDQGWKHQXVHSUBCOOLINGPHWKRGIRUIRUYHULI\LQJ
UHIULJHUDQWFKDUJH
WEIGH-IN
CHARGING METHOD
)&DQG%HORZ
NOTE -,QVXODWHOLTXLGOLQHZKHQLWLVURXWHGWKURXJKDUHDVZKHUHWKHVXUURXQGLQJDPELHQWWHPSHUDWXUHFRXOGEHFRPH
KLJKHUWKDQWKHWHPSHUDWXUHRIWKHOLTXLGOLQHRUZKHQSUHVVXUHGURSLVHTXDOWRRUJUHDWHUWKDQSVLJ
NOTE -7KHQDPHSODWHLVVKRZQIRULOOXVWUDWLRQSXUSRVHVRQO\*RWRDFWXDOQDPHSODWHRQRXWGRRUXQLWIRUFKDUJH
LQIRUPDWLRQ
Charging Formula for Liquid Line Charge Adjustments
[(Line Set oz./ft. x Total Length) – (Factory Charge for Line Set)] = Charge Adjustment
Example:
8QLWVDUHIDFWRU\FKDUJHGIRUIHHWPHWHUVRIOLQHVHW
)DFWRU\FKDUJHIRULVR]IW[ RXQFHV
Cº T
DROP
–DT=ºFACTION
53º 19 – 15 = 4 INCREASE THE AIRFLOW
58º 14 – 15 = -1 (WITHIN +3º RANGE) NO CHANGE
62º 10 – 15 = -5 DECREASE THE AIRFLOW
DT
80 24 24 24 23 23 22 22 22 20 19 18 17 16 15
78 23 23 23 22 22 21 21 20 19 18 17 16 15 14
76 22 22 22 21 21 20 19 19 18 17 16 15 14 13
74 21 21 21 20 19 19 18 17 16 16 15 14 13 12
72 20 20 19 18 17 17 16 15 15 14 13 12 11 10
70 19 19 18 18 17 17 16 15 15 14 13 12 11 10
57 58 59 60 61 62 63 64 65 66 67 68 69 70
TEMPERATURE OF AIR
ENTERING INDOOR COIL ºF
INDOOR
COIL
DRY
BULB
B
T
DROP
19º
A
DRY-BULB
WET-BULB ºF
A
72º
B
64º
C
53º
AIR
FLOW
AIR
FLOW
ALL TEMPERATURES ARE
EXPRESSED IN ºF
ASSUME DT = 15 AND A TEMP. = 72º, BELOW C TEMPERATURES REQUIRE ACTION:
1. Determine the desired DT —0HDVXUHHQWHULQJDLU
WHPSHUDWXUHXVLQJ'U\%XOEADQG:HW%XOEB). DT
LVWKHLQWHUVHFWLQJYDOXHRIADQGBLQWKHWDEOHVHH
WULDQJOH
2. Find Temperature Drop across coil —0HDVXUHWKH
'U\%XOEDLUWHPSHUDWXUHHQWHULQJWKHFRLOADQGC).
7HPSHUDWXUH'URS)RUPXODT
DROP
APLQXVC.
3. Determine if fan needs adjustment —,IWKH
GLႇHUHQFHEHWZHHQWKHPHDVXUHT
DROP
DQGWKHGHVLUHG
DT (T
DROP
– DTLVZLWKLQQRDGMXVWPHQWLVQHHGHG
6HHH[DPSOHDWOHIW
4. Adjust the Fan Speed —6HHLQGRRUXQLWLQVWUXFWLRQV
WRLQFUHDVHGHFUHDVHIDQVSHHG
NOTE:&KDQJLQJDLUÀRZDႇHFWVDOOWHPSHUDWXUHV
UHFKHFNWHPSHUDWXUHVWRFRQ¿UPWKDWWKH7HPSHUDWXUH
'URSDQG'7DUHZLWKLQ
Installation Instructions
+
=
/LTXLG/LQH
6HW'LDPHWHU
5%RXQFHV
SHUIRRW
´
0.60
1.00
$PRXQWVSHFL¿HG
RQQDPHSODWH
$GMXVWDPRXQWIRU
YDULDWLRQLQOLQH
VHWOHQJWKDQG
OLTXLGOLQHGLDPHWHU
XVLQJWDEOHEHORZ
7RWDO&KDUJH
Figure 46. Using R454B Weigh-In Method
Page 85
31-5000872 Rev. 0
SUBCOOLING
CHARGING METHOD
$OOFKDUJLQJ0867EHSHUIRUPHGZKLOHV\VWHPLVRSHUDWLQJHLWKHUDWPD[LPXPVSHHGRUGHPDQG
1.7KHGLDJQRVWLFVFUHHQRQWKHWKHUPRVWDWRURXWGRRUFRQWURO6HJPHQWGLVSOD\ZLOOVKRZLQGRRUDQGRXWGRRUPRWRU
&)0VRU530V
2.0HDVXUHRXWGRRUDPELHQWWHPSHUDWXUH
3.&RQQHFW*DXJH6HW
&KHFNOLTXLGDQGYDSRUOLQHSUHVVXUHV&RPSDUHSUHVVXUHVZLWKFRROLQJPRGHQRUPDORSHUDWLQJSUHVVXUHVLQWKH
DSSOLFDEOHFKDUJLQJVWLFNHUQRUPDORSHUDWLQJSUHVVXUHVDWPD[LPXPFDSDFLW\
NOTE7KHUHIHUHQFHWDEOHLVDJHQHUDOJXLGH([SHFWPLQRUSUHVVXUHYDULDWLRQV6LJQL¿FDQWGLႇHUHQFHVPD\PHDQ
LPSURSHUFKDUJHRURWKHUV\VWHPSUREOHP
6HWWKHUPRVWDWIRUKHDWFRROGHPDQGGHSHQGLQJRQPRGHEHLQJXVHG
USING COOLING MODE²ZKHQWKHRXWGRRUDPELHQWWHPSHUDWXUHLV)&DQGDERYH7DUJHWVXEFRROLQJ
YDOXHVPD[LPXPFDSDFLW\LQDSSOLFDEOHFKDUJLQJVWLFNHUDUHEDVHGRQ)WR)&&LQGRRU
UHWXUQDLUWHPSHUDWXUHLIQHFHVVDU\RSHUDWHKHDWLQJWRUHDFKWKDWWHPSHUDWXUHUDQJHWKHQVHWWKHLQLWLDOFRROLQJ
GHPDQGDWPD[LPXPFDSDFLW\7KHSUHIHUUHGPHWKRGLVWRXVHWKH³FKDUJHPRGH´MXPSHURQWKHRXWGRRUFRQWURO6HH
Charge Mode JumperVHFWLRQRQ3DJH:KHQSUHVVXUHVKDYHVWDELOL]HGFRQWLQXHZLWK6WHS
6.5HDGWKHOLTXLGOLQHWHPSHUDWXUHUHFRUGLQWKHLIQºVSDFH
7.5HDGWKHOLTXLGOLQHSUHVVXUHWKHQ¿QGLWVFRUUHVSRQGLQJWHPSHUDWXUHLQWKHWHPSHUDWXUHSUHVVXUHFKDUWOLVWHGLQ
WKHDSSOLFDEOHFKDUJLQJVWLFNHUDQGUHFRUGLWLQWKHSATºVSDFH
8.6XEWUDFWLIQºWHPSHUDWXUHIURPSATº7HPSHUDWXUHWRGHWHUPLQHVXEFRROLQJUHFRUGLWLQSCºVSDFH
9.&RPSDUHSCºUHVXOWVZLWKDSSOLFDEOHFKDUJLQJVWLFNHUEHLQJVXUHWRQRWHDQ\DGGLWLRQDOFKDUJHIRUOLQHVHWDQGRU
PDWFKXS
10.,IVXEFRROLQJYDOXHLVJUHDWHUWKDQVKRZQLQDSSOLFDEOHFKDUJLQJVWLFNHUIRUWKHDSSOLFDEOHXQLWUHPRYHUHIULJHUDQW
LIOHVVWKDQVKRZQDGGUHIULJHUDQW
11. ,IUHIULJHUDQWLVDGGHGRUUHPRYHGUHSHDW6WHSVWKURXJKWRYHULI\FKDUJH
12.'LVFRQQHFWJDXJHVHWDQGUHLQVWDOOERWKWKHOLTXLGDQGVXFWLRQVHUYLFHYDOYHFDSV
Figure 47. Using R454B Subcooling Method - High Speed (High Capacity)
Installation Instructions
SATº
LIQº –
SCº =
USE
COOLING
MODE
)&
USE
HEATING
MODE
Page 86
31-5000872 Rev. 0
Installation Instructions
SUBCOOLING
CHARGING METHOD (cont)
9HULI\WKHXQLWLVHOHFWULFDOO\JURXQGHGEHIRUHFKDUJLQJ
WKHV\VWHP([WUHPHFDUHVKDOOEHWDNHQQRWWRRYHU¿OOWKH
UHIULJHUDWLQJV\VWHP
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LQIRUPDWLRQRXWOLQHGLQWKLVVHFWLRQDQGLQWKHWDEOHV
SURYLGHGRQWKHFKDUJLQJODEHORQWKHXQLW¶VFRQWURO
DFFHVVSDQHO
5%LVD]HRWURSLFEOHQGRIWZRUHIULJHUDQWV$W
DQ\JLYHQUHIULJHUDQWSUHVVXUH5%ZLOOKDYH
WZRVDWXUDWLRQWHPSHUDWXUHVDVDWXUDWHGOLTXLG
WHPSHUDWXUHDQGDVDWXUDWHGYDSRUWHPSHUDWXUH6HH
R-454B Refrigerant Pressure Temperature Chart
LQWKH,QVWDOODWLRQDQG6HUYLFH0DQXDOIRUVDWXUDWLRQ
WHPSHUDWXUHV
5%8QLWVPXVWEHFKDUJHGZLWKOLTXLGUHIULJHUDQW
)ROORZFRQYHQWLRQDOFKDUJLQJSURFHGXUHVZKHQFKDUJLQJ
WKHV\VWHP7KHWHFKQLFLDQLVUHTXLUHGWRPDUNWKHWRWDO
FKDUJHRIWKHLQVWDOOHGV\VWHPRQWKHXQLWQDPHSODWH
ZKLFKLQFOXGHVWKHQDPHSODWHFKDUJHIDFWRU\FKDUJH
DQGDGGLWLRQDOFKDUJHWKDWLVDGGHGWRWKHV\VWHPDWWKH
WLPHRILQVWDOODWLRQ
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ó´/+ÀDUHFRQQHFWLRQWKHUHIRUHDó´/+IHPDOHÀDUH
DGDSWHUZLOOEHUHTXLUHG&RQQHFWPDQLIROGJDXJHVDQG
KRVHVIROORZLQJFRQYHQWLRQDOFKDUJLQJSURFHGXUHV
3RVLWLRQWKH5%UHIULJHUDQWF\OLQGHUWRGHOLYHUOLTXLG
UHIULJHUDQW
NS22AXQLWLVIDFWRU\FKDUJHGZLWKHQRXJK5%
UHIULJHUDQWWRDFFRPPRGDWHDIRRWOHQJWKRIUHIULJHUDQW
SLSLQJ)RUOLQHOHQJWKVRYHUIHHWDGGR]RI
UHIULJHUDQWIRUHYHU\IHHWRISLSLQJEH\RQGIHHW
,QLWLDWHDFDOOIRUFRROLQJDQGDOORZWKHUHIULJHUDQW
SUHVVXUHVDQGWHPSHUDWXUHVWRVWDELOL]H$GMXVWWKH
FKDUJHWRXVLQJWKHVXEFRROLQJPHWKRG7KHXQLW
FKDUJLQJODEHOSURYLGHVWKHWDUJHW6XEFRROLQJ9DOXHV
5HFRUGWKHOLTXLGOLQHWHPSHUDWXUH0HDVXUHWKHOLTXLG
OLQHSUHVVXUHDQGXVHWKHYDOXHWRGHWHUPLQHWKH
6DWXUDWHG/LTXLG7HPSHUDWXUH&DOFXODWHVXEFRROLQJE\
VXEWUDFWLQJWKHOLTXLGOLQHWHPSHUDWXUHIURPWKH6DWXUDWHG
OLTXLGWHPSHUDWXUH
Subcooling = Saturated Liquid Temperature – Liquid
Line Temperature
&RPSDUHWKHUHVXOWVZLWKWKHXQLWFKDUJLQJODEHO
2QFHV\VWHPFKDUJLQJKDVEHHQFRPSOHWHGWKH
DGGLWLRQDOFKDUJHDQGWRWDOFKDUJHPXVWEHPDUNHGRQ
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Total Charge = Factory Charge + Additional Charge.
7KHWRWDOFKDUJHLVPDUNHGRQWKHVSDFHDGMDFHQWWR
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Figure 48. NS22A Charging Label
Page 87
31-5000872 Rev. 0
Installation Instructions
Table 21. R454B Temperature (°F) - Pressure (Psig)
5%5HIULJHUDQW3UHVVXUH±7HPSHUDWXUH&KDUW
3UHVVXUH
SVLJ
6DWXUDWHG
/LTXLG
7HPS)
6DWXUDWHG
9DSRU7HPS
)
3UHVVXUH
SVLJ
6DWXUDWHG
/LTXLG
7HPS)
6DWXUDWHG
9DSRU7HPS
)
3UHVVXUH
SVLJ
6DWXUDWHG
/LTXLG
7HPS)
6DWXUDWHG
9DSRU7HPS
)
3UHVVXUH
SVLJ
6DWXUDWHG
/LTXLG
7HPS)
6DWXUDWHG
9DSRU7HPS
)
0 -58.9 -57.1 158 58.9 61.3 272 93.0 362 115.6
25 -19.2 -17.2 160 59.6 62.0 93.5 95.9 113.8 116.0
30 -13.9 -11.8 165 63.8 276 366
35 -9.0 -6.9 170 63.1 65.5 278 96.9 368 116.8
-2.3 175 67.3 280 95.0 370 115.0 117.2
-0.2 1.9 180 66.6 69.0 282 95.5 97.9 372 117.6
50 3.7 5.9 185 68.2 70.6 96.0 115.8 118.0
55 7.5 9.7 190 69.8 72.2 286 96.5 98.8 376 116.2
60 11.0 13.2 195 73.8 288 97.0 99.3 378 116.6 118.8
65 16.6 200 73.0 290 97.5 99.8 380 117.0 119.2
70 17.6 19.8 202 73.6 76.0 292 97.9 100.3 382 119.6
75 20.6 22.9 76.6 100.7 117.7 119.9
80 23.6 25.9 206 77.3 296 98.9 101.2 386 118.1 120.3
85 28.7 208 75.5 77.9 298 101.7 388 118.5 120.7
90 29.1 210 76.1 78.5 300 99.8 102.2 390 118.9 121.1
95 31.7
212 76.7 79.1 302 100.3 102.6 392 119.3 121.5
100 36.6 77.3 79.7 100.8 103.1 119.7 121.9
102 35.3 37.6 216 77.9 80.2 306 101.2 103.5 396 120.1 122.2
36.2 38.6 218 80.8 308 101.7 398 120.5 122.6
106 37.2 39.5 220 79.0 310 102.1 120.8 123.0
108 38.1 222 79.6 82.0 312 102.6 121.8 123.9
110 39.1 80.2 82.6 103.0 122.7
112 226 80.8 83.1 316 103.5 105.8 123.6 125.8
228 81.3 83.7 318 103.9 106.2 126.7
116 230 81.9 320 106.7 125.5 127.6
118 232 322 107.1 128.5
120 83.0 105.3 107.6 127.3
122 236 83.6 86.0 326 105.7 108.0 128.2 130.2
238 86.5 328 106.2 108.5 129.0 131.1
126 87.1 330 106.6 108.9 129.9 132.0
128 85.2 87.6 332 107.0 109.3 131.6 133.7
130 50.3 85.8 88.1 107.5 109.7 133.3 135.3
132
51.1 86.3 88.7 336 107.9 110.2 135.0 137.0
51.9 86.8 89.2 338 108.3 110.6 136.7 138.6
136 52.8 250 89.7 108.8 111.0 500 138.3
138 51.2 53.6 252 87.9 90.3 109.2 111.5 510 139.9
52.0 90.8 109.6 111.9 520
52.8 55.2 256 88.9 91.3 110.0 112.3 530
53.6 56.0 258 89.5 91.8 110.5 112.7
56.7 260 90.0 350 110.9 113.1 550
55.1 57.5 262 90.5 92.9 352 111.3 113.5 560
150 55.9 58.3 91.0 111.7 570 150.7
152 56.6 59.0 266 91.5 93.9 356 112.1 580 150.5 152.1
59.8 268 92.0 358 112.5 590 151.9 153.5
156 58.1 60.5 270 92.5 360 112.9 115.2 600 153.3
NOTE:
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Page 88
31-5000872 Rev. 0
Installation Instructions
Figure 49. NS22A Charging Label
R454B CHARGING PROCEDURE
FOR COMPLETE CHARGING DETAILS, REFER TO THE OUTDOOR UNIT INSTALLATION AND SERVICE PROCEDURE
IMPORTANT !
Unit must be put in Charge Mode so charging occurs with system operating at
100% capacity. Seven-segment display on outdoor control will show outdoor
unit running capacity.
AIRFLW CHECK - Both airflow and refrigerant charge must be monitored
or a proper system set-up. It may be necessary to alternately check and
adjust the airflow and the refrigerant charge.
.
The unit is factory-charged with R454B refrigerant in the amount indicated on
the unit rating plate. This charge is based on a matching indoor coil and outdoor
coil using a 15 foot (4.6 m) line set. On line sets with ފ (9.5mm) liquid line, add
3oz. additional refrigerant for every 5ft. longer than 15ft. If line length is less than
15ft., subtract this amount (see Installation Instructions for more details). The
following charging procedure is intended as a general guide. It is intended for use
on expansion valve systems only. For best results, indoor temperature should
be between 70ºF (21ºC) and 80ºF (27ºC) and monitor system pressures while
charging. Charging should be done with unit operating in the cooling mode.
1 - Connect the manifold gauge set to the service valves. Connect the low pres-
sure gauge to vapor valve service port and the high pressure gauge to liquid
valve service port. Connect the center manifold hose to an upright cylinder of
R454B. Close manifold gauge set valves.
2 - Set the room thermostat to call for heat. This will create the necessary load to
properly charge the system in the cooling cycle.
3 - Use a digital thermometer to record the outdoor ambient temperature.
4 -
mode with a set point of 68°F (20°C). When pressures have stabilized, use a
digital thermometer to record the liquid line temperature.
5 - The outdoor temperature will determine which charging method to use. Pro-
ceed with the appropriate charging procedure list below.
Charge Using the Weigh-in Method
If the system is void of refrigerant, locate and repair any leaks and then weigh in
the refrigerant charge into the unit. For charge adjustments, be sure to consider
-
ence.
1 - Recover the refrigerant from the unit.
2 - Conduct leak check; evacuate as previously outlined.
3 - Weigh in the unit nameplate charge, adjusting for matchup and line set length
NOTE: See installation instruction for adding charge for longer line sets.
1 - Recover the refrigerant from the unit.
2 - Perform a leak check and evacuate as outlined in the installation instruction.
3 - Weigh in the unit nameplate charge.
If weighing facilities are not available or if you are charging the unit during warm
weather, follow one of the other procedures outlined as follows.
Subcooling Method—Outdoor Temperature 65ºF (18.3ºC) and above.
Use the subcooling method to charge the
unit. It may be necessary to restrict the air
pressures in the 325-375 psig (2240-2585
kPa) range. These higher pressures are
necessary for checking the charge. Block
equal sections of air intake panels and move obstructions sideways until the liquid
pressure is in the 325-375 psig (2240-2585 kPa) range.
1 - Block coil one side at a time with cardboard/plastic until proper testing pres-
sures are reached.
2 - With the manifold gauge hose still on the liquid service port and the unit op-
erating stably, use a digital thermometer to record the liquid line temperature.
3 - At the same time, record the liquid line pressure reading.
4 - Use a temperature/pressure chart for R454B to determine the saturation tem-
perature for the liquid line pressure reading.
CARDBOARD
OR PLASTIC
SHEET
5 - Subtract the liquid line temperature from the saturation temperature (accord-
ing to the chart) to determine subcooling (Saturation temperature - Liquid
line temperature = Subcooling Value).
6 - Compare the subcooling value with those in table 1. If subcooling is greater
than shown, recover some refrigerant. If subcooling is less than shown, add
some refrigerant.
Using the Approach Method—Outdoor Temperature 65ºF (18.3ºC) and above.
Monitor system pressures while charging.
1 - Record outdoor ambient temperature using a digital thermometer.
2 - Attach high pressure gauge set and operate unit for several minutes to allow
system pressures to stabilize.
3 - Compare stabilized pressures with those provided in table 3, Normal Operat-
ing Pressures. Minor variations in these pressures may be expected due to
is not properly charged or that a problem exists with some component in the
system. Pressures higher than those listed indicate that the system is over-
charged. Pressures lower than those listed indicate that the system is under-
charged. Verify adjusted charge using the approach method.
4 - Use the same digital thermometer used to check outdoor ambient temperature
to check liquid line temperature. Verify the unit charge using the approach
method.
5 -
values given in table 2. If the values don’t agree with the those in table 2, add
refrigerant to lower the approach temperature or recover refrigerant from the
system to increase the approach temperature.
*Temperature of air entering outdoor coil.
Charging Temperatures and Pressures
TONNAGE -024 -036 -048 -060
Table 1 – Subcooling Values
Saturation Temperature minus Liquid Line Temperature °F ± 1°F
Temp. °F (°C) 7.5 (4.2) 6.5 (3.6) 9.5 (5.3) 9.5 (5.3)
Table 2 – Approach Values
Liquid Line Temperature minus Outdoor Ambient Temperature °F ± 1°F
Temp. °F (°C) 4 (2.2) 5.5 (3.1) 6.5 (3.6) 6.5 (3.6)
Table 3 – Normal Operating Pressures (Liquid ±10 and Suction ±5 psig)
Air Temp.*
The values below are typical pressures; indoor evaporator
match up, indoor air quantity, and evaporator load will cause
the pressures to vary
Maximum
Speed
Liquid Line Pressure / Vapor Line Pressure
65° 211 / 135 209 / 128 227 / 130 222 / 129
70° 227 / 136 226 / 130 247 / 131 240 / 127
75° 245 / 136 243 / 131 267 / 132 260 / 128
80° 265 / 136 263 / 132 288 / 132 281 / 129
85° 285 / 136 283 / 132 310 / 134 302 / 133
90° 308 / 137 305 / 133 332 / 135 325 / 134
95° 330 / 137 328 / 134 352 / 134 349 / 135
100° 354 / 138 351 / 134 381 / 137 374 / 135
105° 378 / 140 376 / 135 406 / 138 400 / 137
110° 404 / 141 402 / 137 428 / 139 427 / 135
115° 431 / 141 429 / 138 458 / 141 437 / 138
Page 89
31-5000872 Rev. 0
Installation Instructions
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Page 90
31-5000872 Rev. 0
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