507768-02B Page 1 of 56Issue 1904
INSTALLATION INSTRUCTIONS
BG961UHE
Warm Air Gas Furnace
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Save these instructions for future reference
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Table of Contents
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Gas Furnace
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507768-02BPage 2 of 56 Issue 1904
Front View
Top View
Side View
3/4
(19)
B
33
(838)
A
1
Bottom Return
Air Opening
9/16
(14)
Air Flow
C
3/4
(19)
14-3/4
(375)
16
(406)
2
Optional
Side Return
Air Filter Kit
(either side)
5/8
(16)
19-7/16 (494)
27-3/4 (705)
6-1/2 (165)
(either side)
14
(356)
Condensate
Trap Connection
(either side)
Electrical Inlet
(either side)
9 (229) Right
6-9/16 (167) Left
Gas Piping Inlet
(either side)
2 (51) (either side)
9/16
(14)
1 (25)
Front Panel
1
Bottom Return
Air Opening
3-1/4
(83)
12-5/8 (321)
(either side)
23
(584)
1
Side Return
Air Opening
(either side)
1-15/16 (49)
1-1/2
(38)
23-1/2 (597)
Supply Air
Opening
2 (51)
2-7/8
(73)
Exhaust Air
Outlet
Combustion
Air Intake
2
Optional
Side Return
Air Filter Kit
(either side)
23-3/4 (603)
25 (635)
3-3/8
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D
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Model
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in. mm in. mm in. mm in. mm
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Unit Dimensions
507768-02B Page 3 of 56Issue 1904
Figure 1.
Parts Arrangement
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Gas Furnace
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507768-02BPage 8 of 56 Issue 1904
Figure 5. (TXLSPHQWLQ&RQ¿QHG6SDFH$OO$LU)URP
Inside
Air from Outside
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Figure 6. (TXLSPHQWLQ&RQ¿QHG6SDFH$OO$LUIURP
Outside
(Inlet Air from Crawl Space and Outlet Air to
Ventilated Attic)
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Figure 7. (TXLSPHQWLQ&RQ¿QHG6SDFH$OO$LUIURP
Outside
(All Air through Ventilated Attic)
Figure 8. (TXLSPHQWLQ&RQ¿QHG6SDFH$OO$LUIURP
Outside
OUTLET AIR
INLET AIR
NOTE−Each air duct opening shall have a free area of at least one
square inch per 2,000 Btu (645mm
2
per .59kW) per hour of the total
input rating of all equipment in the enclosure. If the equipment room
is located against an outside wall and the air openings communi-
cate directly with the outdoors, each opening shall have a free area
of at least 1 square inch per 4,000 Btu (645mm
2
per 1.17kW) per
hour of the total input rating of all other equipment in the enclosure.
ROOF TERMINATED
EXHAUST PIPE
SIDE WALL
TERMINATED
EXHAUST PIPE
(ALTERNATE
LOCATION)
FURNACE
507768-02B Page 9 of 56Issue 1904
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WARNING
Ventilation Louvers
Inlet Air
(Minimum 12 in.
(305mm) above
Attic Floor)
Roof Terminated
Exhaust Pipe
Furnace
*Intake Debris
Screen
(Provided)
* See Maximum Vent Lengths table
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Figure 9. (TXLSPHQWLQ&RQ¿QHG6SDFH
(Inlet Air from Ventilated Attic and Outlet Air to
Outside)
Roof Terminated
Exhaust Pipe
Furnace
Ventilation
Louvers
(Crawl Space)
*Intake Debris Screen Provided
Inlet Air
Minimum
12 in. (305mm)
above Crawl
Space Floor
Coupling or
3 in. to 2 in.
Transition
(Field Provided)
* See Maximum Vent Lengths table
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Figure 10. (TXLSPHQWLQ&RQ¿QHG6SDFH
(Inlet Air from Ventilated Crawl Space and Outlet Air
to Outside)
Shipping Bolt Removal
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Figure 11.
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Installation
Setting Equipment
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507768-02BPage 10 of 56 Issue 1904
Figure 12. Setting Equipment
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WARNING
Figure 13. Installation Clearances
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Top
Bottom (Floor)
Left Side
Right Side
Top/Plenum 1 in. (25 mm)
*Front 0
Back 0
Sides 0†
Vent 0
Floor 0‡
*Front clearance in alcove installation must be 24 in. (610 mm).
Maintain a minimum of 24 in. (610 mm) for front service access.
†Allow proper clearances to accommodate condensate trap.
‡For installations on a combustible oor, do not install the furnace directly
on carpeting, tile or other combustible materials other than wood
ooring.
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507768-02B Page 11 of 56Issue 1904
Return Air Guidelines
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Figure 14. Side Return Air
(with Transition and Filter)
Figure 15. Optional Return Air Base
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507768-02BPage 12 of 56 Issue 1904
Figure 16. Removing the Bottom Panel
Removing the Bottom Panel
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Horizontal Applications
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WARNING
Figure 17.
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Figure 18. Installation Clearances
Horizontal Applications
dnE thgiRdnE tfeL
Right−Hand Discharge
Left−Hand Discharge
Top
Bottom (Floor)**
Bottom (Floor)**
dnE thgiRdnE tfeL
Air
Flow
Air
Flow
Air
Flow
Air
Flow
Top 0
Front* 0
Back 0
Ends 0
Vent 0
Floor 0‡
* Front clearance in alcove installation must be 24 in. (610 mm).
Maintain a minimum of 24 in. (610 mm) for front service access.
**An 8" service clearance must be maintained below the unit to provide
for servicing of the condensate trap.
‡For installations on a combustible oor, do not install the furnace directly
on carpeting, tile or other combustible materials other than wood
ooring.
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Suspended Installation of Horizontal Unit
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Figure 19. Typical Horizontal Application
507768-02B Page 13 of 56Issue 1904
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Platform Installation of Horizontal Unit
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Figure 20.
Return Air - Horizontal Applications
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Filters
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Table 1.
Furnace Cabinet
Width
Filter Size
Side Return Bottom Return
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Duct System
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Supply Air Plenum
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EHLQSODFHZKHQWKHIXUQDFHLVRSHUDWLQJDQGLWPXVWQRW
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Return Air Plenum
NOTE: 5HWXUQDLUPXVWQRWEHGUDZQIURPDURRPZKHUH
WKLVIXUQDFHRUDQ\RWKHUJDVIXHOHGDSSOLDQFHLHZDWHU
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507768-02B3DJHRI Issue 1904
XQLW RSHUDWHV SURSHUO\ DQG VDIHO\ 8VH ¿EHUJODVV VHDOLQJ
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CAUTION
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RI 39& 8VH 39& SULPHU DQG VROYHQW FHPHQW ZKHQ
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8VH 39& SULPHU DQG VROYHQW FHPHQW RU $%6 VROYHQW
FHPHQW PHHWLQJ $670 VSHFL¿FDWLRQV UHIHU WR 7DEOH
$V DQ DOWHUQDWH XVH DOO SXUSRVH FHPHQW WR ERQG $%6
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WKH VDPH PDWHULDOV 8VH WUDQVLWLRQ VROYHQW FHPHQW ZKHQ
ERQGLQJ$%6WRHLWKHU39&RU&39&
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YHQWSLSH KDQJHUV8QLIRUPO\DSSO\DOLEHUDOFRDWRI39&
SULPHUIRU39&RUXVHDFOHDQGU\FORWKIRU$%6WRFOHDQ
LQVLGH VRFNHW VXUIDFH RI ¿WWLQJ DQG PDOH HQG RI SLSH WR
GHSWKRI¿WWLQJVRFNHW
Canadian Applications Only
3LSH ¿WWLQJV SULPHU DQG VROYHQW FHPHQW XVHG WR YHQW
H[KDXVWWKLVDSSOLDQFHPXVWEHFHUWL¿HGWR8/&6DQG
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DGGLWLRQWKH¿UVWWKUHHIHHWRIYHQWSLSHIURPWKHIXUQDFH
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Table 2.
3LSLQJDQG)LWWLQJV6SHFL¿FDWLRQV
6FKHGXOH39&3LSH '
6FKHGXOH39&&HOOXODU&RUH3LSH F891
6FKHGXOH39&)LWWLQJV '
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6FKHGXOH&39&)LWWLQJV )
6'539&RU6'539&3LSH '
6'5&39&RU6'5&39&3LSH )
6FKHGXOH$%6&HOOXODU&RUH':9
(Pipe)
F628
6FKHGXOH$%63LSH '
6FKHGXOH$%6)LWWLQJV '
$%6':9'UDLQ:DVWH9HQW
3LSH)LWWLQJV
'
39&':9'UDLQ:DVWH9HQW
3LSH)LWWLQJV
'
PRIMER & SOLVENT CEMENT
ASTM
SPECIFICATION
39&&39&3ULPHU F656
39&6ROYHQW&HPHQW '
&39&6ROYHQW&HPHQW )
$%66ROYHQW&HPHQW '
39&&39&$%6$OO3XUSRVH&HPHQW)RU
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CANADA PIPE & FITTING & SOLVENT
CEMENT
MARKING
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ULCS63639&&39&6ROYHQW&HPHQW
$%6WR39&RU&39&7UDQVLWLRQ&HPHQW
POLYPROPYLENE VENTING SYSTEM
ULC-S636
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TM
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507768-02B Page 15 of 56Issue 1904
Table 3. Outdoor Termination Kits Usage
Capacity
VENT
PIPE DIA.
(in.)
STANDARD CONCENTRIC
Outdoor
Exhaust
Accelerator
(Dia. X Length)
Outdoor
Exhaust
Accelerator
(Dia. X Length)
Flush Mount
Kit
Concentric Kit
&RQFHQWULF
Kit
&RQFHQWULF
Kit
[ [ 51W11**
71M80
OR
+44W92++
69M29
OR
+44W92++
60L46
OR
44W93+
2 <(6 <(6 <(6
<(6 <(6 <(6
3 <(6 <(6 <(6
070
2 <(6 <(6 <(6
<(6 <(6 <(6
3 <(6 <(6 <(6
090
2 <(6 <(6 <(6 <(6
<(6 <(6 <(6 <(6
3 <(6 <(6 <(6 <(6
110
2 <(6 <(6 <(6 <(6
<(6 <(6 <(6 <(6
3 <(6 <(6 <(6 <(6
5HTXLUHV¿HOGSURYLGHGHQGLQVWDOOHG´H[KDXVWDFFHOHUDWRU
.LW:LVSURYLGHGZLWKD´DFFHOHUDWRUZKLFKPXVWEHXVHGIRUDOODQGIXUQDFHLQVWDOODWLRQV
7HUPLQDWLRQNLWV::*-DSSURYHGIRUXVHLQ&DQDGLDQLQVWDOODWLRQVWRPHHW&6$%
7KH:&RQFHQWULFNLWLVSURYLGHGZLWKD´DFFHOHUDWRUZKLFKPXVWEHLQVWDOOHGRQWKHH[KDXVWRXWOHWZKHQWKLVNLWLVXVHG
ZLWKWKHDQGIXUQDFHV
Joint Cementing Procedure
$OO FHPHQWLQJ RI MRLQWV VKRXOG EH GRQH DFFRUGLQJ WR WKH
VSHFL¿FDWLRQVRXWOLQHGLQ$670'
NOTE: $ VKHHW PHWDO VFUHZ PD\ EH XVHG WR VHFXUH WKH
LQWDNHSLSHWRWKHFRQQHFWRULIGHVLUHG8VHDGULOORUVHOI
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DANGER OF EXPLOSION!
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NOTE: 7LPH LV FULWLFDO DW WKLV VWDJH 'R QRW DOORZ
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VHFRQGFRDWWRHQGRISLSH
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DUHZHWZLWKFHPHQWIRUFHIXOO\LQVHUWHQGRISLSHLQWR
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507768-02BPage 16 of 56 Issue 1904
NOTE: $VVHPEO\VKRXOGEHFRPSOHWHGZLWKLQVHFRQGV
DIWHUODVWDSSOLFDWLRQRIFHPHQW+DPPHUEORZVVKRXOGQRW
EHXVHGZKHQLQVHUWLQJSLSH
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VROYHQW
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Venting Practices
Figure 21.
Removal of the Furnace from Common Vent
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D YHQWLQJ V\VWHP FRPPRQO\ UXQ ZLWK VHSDUDWH JDV
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CARBON MONOXIDE POISONING HAZARD
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V\VWHP
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507768-02B Page 17 of 56Issue 1904
Figure 22.
CHIMNEY
OR GAS
VENT
(Check sizing
for remaining
appliance)
FURNACE
(Removed from
from common
vent system)
WATER
HEATER
OPENINGS
(To Adjacent
Room)
If this gas furnace replaces a furnace which
was commonly vented with another gas appliance,
the size of the existing vent pipe for that gas
appliance must be checked. Without the heat of the
original furnace flue products, the existing vent pipe
is probably oversized for the single water heater or
other appliance. The vent should be checked for
proper draw with the remaining appliance.
REPLACING FURNACE THAT
WAS PART OF A COMMON
VENT SYSTEM
Exhaust Piping
6HH)LJXUHDQG)LJXUH
,QDUHDVZKHUHSLSLQJSHQHWUDWHVMRLVWRULQWHULRUZDOOV
KROHPXVWEHODUJHHQRXJKWRDOORZFOHDUDQFHRQDOO
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:KHQ IXUQDFH LV LQVWDOOHG LQ D UHVLGHQFH ZKHUH XQLW
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GLVFKDUJHWKURXJKDQH[LVWLQJXQXVHGVWDFNLVUHTXLUHG
LQVHUW39&SLSHLQVLGHWKHVWDFNXQWLOWKHHQGLVHYHQ
ZLWKWKHWRSRURXWOHWHQGRIWKHPHWDOVWDFN
CAUTION
7KHH[KDXVWYHQWSLSHRSHUDWHVXQGHUSRVLWLYHSUHVVXUH
DQG PXVW EH FRPSOHWHO\ VHDOHG WR SUHYHQW OHDNDJH RI
FRPEXVWLRQSURGXFWVLQWRWKHOLYLQJVSDFH
CAUTION
Vent Piping Guidelines
7KLVJDV IXUQDFH FDQ EH LQVWDOOHG DV HLWKHU D 1RQ'LUHFW
9HQWRUD'LUHFW9HQWJDVFHQWUDOIXUQDFH
NOTE: In non-Direct Vent installations, combustion air is
WDNHQIURPLQGRRUVDQGÀXHJDVHVDUHGLVFKDUJHGRXWGRRUV
In Direct Vent installations, combustion air is taken from
RXWGRRUVDQGÀXHJDVHVDUHGLVFKDUJHGRXWGRRUV
,QWDNH DQG H[KDXVW SLSH VL]LQJ 6L]H SLSH DFFRUGLQJ WR
7DEOH DQG7DEOH$WKURXJK7DEOH&7DEOH OLVWVWKH
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7DEOH&OLVWWKHPD[LPXPSLSHOHQJWKVSHUPLWWHG
5HJDUGOHVV RI WKH GLDPHWHU RI SLSH XVHG WKH VWDQGDUG
URRIDQGZDOOWHUPLQDWLRQVGHVFULEHGLQWKH([KDXVW3LSLQJ
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NOTE: ,W LV DFFHSWDEOH WR XVH DQ\ SLSH VL]H ZKLFK ¿WV
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NOTE: 7KH H[KDXVW FROODU RQ DOO PRGHOV LV VL]HG WR
DFFRPPRGDWH ´ 6FKHGXOH YHQW SLSH ,Q KRUL]RQWDO
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Figure 23.
507768-02BPage 18 of 56 Issue 1904
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IMPORTANT
Table 4. Minimum Vent Pipe Lengths
Capacity Min. Vent Length*
IWRUIWSOXVHOERZVRU
IWSOXVHOERZ
$Q\DSSURYHGWHUPLQDWLRQPD\EHDGGHGWRWKHPLQLPXP
OHQJWKOLVWHG
Figure 24.
045, 070,
090, 110
Standard or
Concentric?
See Table 3
Intake or
Exhaust?
2”, 2-1/2”
or 3”
Furnace capacity?
1
Which termination?
2
Which needs most
elbows?
3
How many?
4
Desired pipe size?
5
What is the altitude?
6
Use Table 5 to find
max pipe length.
7
507768-02B Page 19 of 56Issue 1904
BG961UHE Maximum Allowable Intake or Exhaust Vent Length in Feet
6WDQGDUG7HUPLQDWLRQDW(OHYDWLRQIW
Number of
90° Elbows
Used
2” Pipe 3LSH 3LSH
Capacity Capacity Capacity
045 070 090 110 045 070 090 110 045 070 090 110
1 76 61 39 19 110 95 63 38 132 132 113 113
27156 105 90 58 33 127 127 108 108
3 66 51 29 9 100 85 53 28 122 122 103 103
61
QD
95 80 23 117 117 98 98
556 19 90 75 18 112 112 93 93
65136 85 70 38 13 107 107 88 88
7 31 9 80 65 33 8 102 102 83 83
8 26
QD
75 60 28
QD
97 97 78 78
9 3621 705523 92927373
10 31 16 65 50 18 87 87 68 68
6WDQGDUG7HUPLQDWLRQDW(OHYDWLRQIW
Number of
90° Elbows
Used
2” Pipe 3LSH 3LSH
Capacity Capacity Capacity
045 070 090 110 045 070 090 110 045 070 090 110
1766139
QD
110 95 63 38 132 132 113 113
27156 105 90 58 33 127 127 108 108
3 66 51 29 100 85 53 28 122 122 103 103
61 95 80 23 117 117 98 98
556 19 90 75 18 112 112 93 93
65136 85 70 38 13 107 107 88 88
7 31 9 80 65 33 8 102 102 83 83
8 26
QD
75 60 28
QD
97 97 78 78
9 3621 705523 92927373
10 31 16 65 50 18 87 87 68 68
6L]HLQWDNHDQGH[KDXVWSLSHOHQJWKVHSDUDWHO\9DOXHVLQWDEOHDUHIRU,QWDNH25([KDXVWQRWFRPELQHGWRWDO%RWK,QWDNHDQG
([KDXVWPXVWEHVDPHSLSHVL]H
Table 5A.
507768-02BPage 20 of 56 Issue 1904
BG961UHE Maximum Allowable Intake or Exhaust Vent Length in Feet
&RQFHQWULF7HUPLQDWLRQDW(OHYDWLRQIW
Number of
90° Elbows
Used
2” Pipe 3LSH 3LSH
Capacity Capacity Capacity
045 070 090 110 045 070 090 110 045 070 090 110
1 68 53 37 17 100 85 59 116 116 109 109
263 32 12 95 80 29 111 111
358 27 7 90 75 106 106 99 99
53 38 22
QD
85 70 19 101 101
5 33 17 80 65 39 96 96 89 89
6 28 12 75 60
QD
91 91
7 38 23 7 70 55 29 86 86 79 79
83318
QD
65 50 81 81
92813 60 19 76 76 69 69
10 23 8 55 71 71
&RQFHQWULF7HUPLQDWLRQ(OHYDWLRQIW
Number of
90° Elbows
Used
2” Pipe 3LSH 3LSH
Capacity Capacity Capacity
045 070 090 110 045 070 090 110 045 070 090 110
1685337
QD
100 85 59 116 116 109 109
263 32 95 80 29 111 111
358 27 90 75 106 106 99 99
53 38 22 85 70 19 101 101
5 33 17 80 65 39 96 96 89 89
6 28 12 75 60
QD
91 91
7 38 23 7 70 55 29 86 86 79 79
83318
QD
65 50 81 81
92813 60 19 76 76 69 69
10 23 8 55 71 71
6L]HLQWDNHDQGH[KDXVWSLSHOHQJWKVHSDUDWHO\9DOXHVLQWDEOHDUHIRU,QWDNH25([KDXVWQRWFRPELQHGWRWDO%RWK,QWDNHDQG
([KDXVWPXVWEHVDPHSLSHVL]H
Table 5B.
507768-02B Page 21 of 56Issue 1904
Maximum Allowable Exhaust Vent Lengths with Furnace Installed in a Closet or Basement Using Ventilated Attic or Crawl
Space for Intake Air in Feet
6WDQGDUG7HUPLQDWLRQDW(OHYDWLRQIW
Number of
90° Elbows
Used
3LSH 3LSH 3LSH
Capacity Capacity Capacity
045 070 090 110 045 070 090 110 045 070 090 110
1 66 51 29 9 95 95 73 38 113 112 93 93
261 90 90 68 33 108 107 88 88
356 19
QD
85 85 63 28 103 102 83 83
51 36 80 80 58 23 98 97 78 78
5 319 8575531893927373
6 26 70 70 13 88 87 68 68
73621
QD
65 65 88382 63 63
8 31 16 60 60 38 3 78 77 58 58
92611 555533
QD
73 72 53 53
10 21 6 50 50 28 68 67
6WDQGDUG7HUPLQDWLRQ(OHYDWLRQIW
Number of
90° Elbows
Used
3LSH 3LSH 3LSH
Capacity Capacity Capacity
045 070 090 110 045 070 090 110 045 070 090 110
1665129
QD
95 95 73 38 113 112 93 93
261 90 90 68 33 108 107 88 88
356 19 85 85 63 28 103 102 83 83
51 36 80 80 58 23 98 97 78 78
5 319 8585531893927373
6 26 70 70 13 88 87 68 68
73621
QD
65 65 883826363
8 31 16 60 60 38 3 78 77 58 58
92611 555533
QD
73 72 53 53
10 21 6 50 50 28 68 67
6L]HLQWDNHDQGH[KDXVWSLSHOHQJWKVHSDUDWHO\9DOXHVLQWDEOHDUHIRU,QWDNH25([KDXVWQRWFRPELQHGWRWDO%RWK,QWDNHDQG
([KDXVWPXVWEHVDPHSLSHVL]H
$GGLWLRQDOYHQWSLSHDQGHOERZVXVHGWRWHUPLQDWHWKHYHQWSLSHRXWVLGHWKHVWUXFWXUHPXVWEHLQFOXGHGLQWKHWRWDOYHQWOHQJWK
FDOFXODWLRQ
Table 5C.
507768-02BPage 22 of 56 Issue 1904
Figure 25.
Figure 26.
507768-02B Page 23 of 56Issue 1904
Figure 27.
Figure 28.
Intake Piping
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507768-02B3DJHRI Issue 1904
Figure 29.
Figure 30.
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'LUHFW 9HQW DSSOLFDWLRQV ZKHUH FRPEXVWLRQ DLU LV WDNHQ
IURPLQGRRUVDQGÀXHJDVHVDUHGLVFKDUJHGRXWGRRUV
8VH¿HOGSURYLGHGPDWHULDOVDQGWKHIDFWRU\SURYLGHG
DLULQWDNHVFUHHQWRURXWHWKHLQWDNHSLSLQJDVVKRZQLQ
)LJXUHRU)LJXUH0DLQWDLQDPLQLPXPFOHDUDQFH
RI´PPDURXQGWKHDLULQWDNHRSHQLQJ7KHDLU
LQWDNH RSHQLQJ ZLWK WKH SURWHFWLYH VFUHHQ VKRXOG
DOZD\V EH GLUHFWHG IRUZDUG RU WR HLWKHU VLGH LQ WKH
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WKH ÀRRULQJ RU D SODWIRUP (QVXUH WKDW WKH LQWDNH DLU
LQOHWZLOOQRWEHREVWUXFWHGE\ORRVHLQVXODWLRQRURWKHU
LWHPVWKDWPD\FORJWKHGHEULVVFUHHQ
,I LQWDNH DLU LV GUDZQ IURP D YHQWLODWHG DWWLF )LJXUH
RUYHQWLODWHGFUDZOVSDFH)LJXUHWKHH[KDXVW
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ZKHQVL]LQJWKHLQOHWDLURSHQLQJ7KHLQOHWDLURSHQLQJ
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FRPEXVWLRQDLUUHTXLUHGIRUDOOJDVDSSOLDQFHVVHUYLFHG
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CAUTION
Ventilation Louvers
Inlet Air
(Minimum 12 in.
(305mm) above
Attic Floor)
Roof Terminated
Exhaust Pipe
Furnace
*Intake Debris
Screen
(Provided)
* See Maximum Vent Lengths table
NOTE: 7KHLQOHWDQGRXWOHWDLURSHQLQJVVKDOOHDFKKDYHDIUHHDUHD
RIDWOHDVWRQHVTXDUHLQFKSHU%WXPP
SHUN:SHU
KRXURIWKHWRWDOLQSXWRIDOOHTXLSPHQWLQWKHHQFORVXUH
Figure 31. (TXLSPHQWLQ&RQ¿QHG6SDFH
(Inlet Air from Ventilated Attic and Outlet Air to
Outside)
507768-02B Page 25 of 56Issue 1904
Roof Terminated
Exhaust Pipe
Furnace
Ventilation
Louvers
(Crawl Space)
*Intake Debris Screen Provided
Inlet Air
Minimum
12 in. (305mm)
above Crawl
Space Floor
Coupling or
3 in. to 2 in.
Transition
(Field Provided)
* See Maximum Vent Lengths table
NOTE: 7KHLQOHWDQGRXWOHWDLURSHQLQJVVKDOOHDFKKDYHDIUHHDUHD
RIDWOHDVWRQHVTXDUHLQFKSHU%WXPP
SHUN:SHU
KRXURIWKHWRWDOLQSXWRIDOOHTXLSPHQWLQWKHHQFORVXUH
Figure 32. (TXLSPHQWLQ&RQ¿QHG6SDFH
(Inlet Air from Ventilated Crawl Space and Outlet Air
to Outside)
General Guidelines for Vent Terminations
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IMPORTANT
For Canadian Installations Only:
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FRGHV WKH PLQLPXP DOORZHG GLVWDQFH EHWZHHQ WKH
FRPEXVWLRQ DLU LQWDNH LQOHW DQG WKH H[KDXVW RXWOHW RI
RWKHUDSSOLDQFHVVKDOOQRWEHOHVVWKDQLQFKHV
PP
IMPORTANT
507768-02BPage 26 of 56 Issue 1904
Table 6.
Maximum Allowable Exhaust Vent Pipe Length (in ft.) without Insulation in Unconditioned Space For Winter Design
7HPSHUDWXUHV6LQJOH6WDJH+LJK(I¿FLHQF\)XUQDFH
Winter Design Temperatures
1
ºF (ºC)
Vent Pipe
Diameter
Unit Input Size
045 070 090 110
WR
WR
PVC
2
PP PVC
2
PP PVC
2
PP PVC
2
PP
LQ 18 16 31 28 50 30 30
LQ 13 1$ 1$ 1$ 56 1$
LQ 9 9 18 18 35 35
WR
WR
LQ 9 8 18 16 32 29 30 30
LQ 5 1$ 13 1$ 1$ 1$
LQ 1$ 1$ 8 8 19 19 26 26
WR
WR
LQ 5 3 12 10 22 19 30 27
LQ 1$ 1$ 7 1$ 15 1$ 22 1$
LQ 1$ 1$ 1$ 1$ 10 10 16 16
1
5HIHUWR0LQLPXP'HVLJQ7HPSHUDWXUHWDEOHSURYLGHGLQWKHFXUUHQWHGLWLRQRIWKH$6+5$()XQGDPHQWDOV+DQGERRN
2
3RO\3URS\OHQHYHQWSLSH33E\'XUDYHQWDQG&HQWURWKHUP
127(0D[LPXPXQLQVXODWHGYHQWOHQJWKVOLVWHGPD\LQFOXGHWKHWHUPLQDWLRQYHQWSLSHH[WHULRUWRWKHVWUXFWXUHDQGFDQQRWH[FHHG
OLQHDUIHHWRUWKHPD[LPXPDOORZDEOHLQWDNHRUH[KDXVWYHQWOHQJWKOLVWHGLQ7DEOH$WKURXJK7DEOH&RU7DEOH
127(,ILQVXODWLRQLVUHTXLUHGLQDQXQFRQGLWLRQHGVSDFHLWPXVWEHORFDWHGRQWKHSLSHFORVHVWWRWKHIXUQDFH6HH)LJXUH
127(&RQFHQWULFWHUPLQDWLRQVDUHWKHHTXLYDOHQWRI¶DQGVKRXOGEHFRQVLGHUHGZKHQPHDVXULQJSLSHOHQJWK
Conditioned
Space
Unconditioned
Space
Exhaust
Pipe
Intake
Pipe
Conditioned
Space
Pipe Insulation
Figure 33. Insulating Exhaust Pipe in an Unconditioned Space
507768-02B Page 27 of 56Issue 1904
VENT TERMINATION CLEARANCES
FOR NON-DIRECT VENT INSTALLATIONS IN THE US AND CANADA
K
D
E
L
B
C
F
G
A
B
J
A
M
I
H
INSIDE CORNER
DETAIL
VENT TERMINAL
AIR SUPPLY INLET
AREA WHERE TERMINAL
IS NOT PERMITTED
Fixed
Closed
Operable
B
Fixed
Closed
Operable
B
B
A =
B =
C =
D =
E =
F =
G =
H =
I =
J =
K =
L =
M =
US Installations
1
Canadian Installations
2
12 inches (305mm) or 12 in. (305mm)
above average snow accumulation.
12 inches (305mm) or 12 in. (305mm)
above average snow accumulation.
Clearance above grade, veranda,
porch, deck or balcony
Clearance to window or
door that may be opened
4 feet (1.2 m) below or to side of opening;
1 foot (30cm) above opening
6 inches (152mm) for appliances <10,000
Btuh (3kw), 12 inches (305mm) for
appliances > 10,000 Btuh (3kw) and
<100,000 Btuh (30kw), 36 inches (.9m)
for appliances > 100,000 Btuh (30kw)
Clearance to permanently
closed window
Vertical clearance to ventilated soffit
located above the terminal within a
horizontal distance of 2 feet (610 mm)
from the center line of the terminal
Clearance to unventilated soffit
Clearance to outside corner
Clearance to inside corner
tended above meter / regulator assembly
Clearance to service regulator
vent outlet
Clearance to non-mechanical air
pliance
ply inlet
Clearance above paved sidewalk or
paved driveway located on public property
Clearance under veranda, porch, deck or balcony
* 12”
* Equal to or greater than soffit depth.
*
* 3 feet (.9m)
* 12”
3 feet (.9m) within a height 15 feet (4.5m)
above the meter / regulator assembly
3 feet (.9m)
6 inches (152mm) for appliances <10,000
Btuh (3kw), 12 inches (305mm) for
appliances > 10,000 Btuh (3kw) and
<100,000 Btuh (30kw), 36 inches (.9m)
for appliances > 100,000 Btuh (30kw)
3 feet (.9m) above if within 10 feet
(3m) horizontally
6 feet (1.8m)
7 feet (2.1m)†
12 inches (305mm)‡
1
In accordance with the current ANSI Z223.1/NFPA 54 Natural Fuel Gas Code
2
In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code
† A vent shall not terminate directly above a sidewalk or paved driveway that is
located between two single family dwellings and serves both dwellings.
‡ Permitted only if veranda, porch, deck or balcony is fully open
on a minimum of two sides beneath the floor. Blue Summit recommends
avoiding this location if possible.
4 feet (1.2 m) below or to side of opening;
1 foot (30 cm) above opening
7 feet (2.1m)†
* Equal to or greater than soffit depth.
* Equal to or greater than soffit depth.
* Equal to or greater than soffit depth.
* No minimum to outside corner * No minimum to outside corner
3 feet (.9m) within a height 15 feet (4.5m)
above the meter / regulator assembly
*12 inches (305mm)‡
**
*For clearances not specified in ANSI Z223.1/NFPA 54 or CSA
B149.1, clearance will be in accordance with local installation
codes and the requirements of the
lation instructions.”
Figure 34. 9HQW7HUPLQDWLRQ&OHDUDQFHVIRU1RQ'LUHFW,QVWDOODWLRQV
507768-02BPage 28 of 56 Issue 1904
VENT TERMINATION CLEARANCES
FOR DIRECT VENT INSTALLATIONS IN THE USA AND CANADA
K
D
E
L
B
C
F
G
A
B
J
A
M
I
H
INSIDE CORNER
DETAIL
VENT TERMINAL
AIR SUPPLY INLET
AREA WHERE TERMINAL
IS NOT PERMITTED
Fixed
Closed
Operable
B
Fixed
Closed
Operable
B
B
A =
B =
C =
D =
E =
F =
G =
H =
I =
J =
K =
L =
M =
US Installations
1
Canadian Installations
2
12 inches (305mm) or 12 in. (305mm)
above average snow accumulation.
12 inches (305mm) or 12 in. (305mm)
above average snow accumulation.
Clearance above grade, veranda,
porch, deck or balcony
Clearance to window or
door that may be opened
6 inches (152mm) for appliances <10,000
pliances > 10,000 Btuh (3kw) and <50,000
pliances > 50,000 Btuh (15kw)
6 inches (152mm) for appliances <10,000
Btuh (3kw), 12 inches (305mm) for
appliances > 10,000 Btuh (3kw) and
<100,000 Btuh (30kw), 36 inches (.9m)
for appliances > 100,000 Btuh (30kw)
Clearance to permanently
closed window
Vertical clearance to ventilated soffit
located above the terminal within a
horizontal distance of 2 feet (610mm)
from the center line of the terminal
Clearance to unventilated soffit
Clearance to outside corner
Clearance to inside corner
tended above meter / regulator assembly
Clearance to service regulator
vent outlet
Clearance to non-mechanical air
pliance
ply inlet
Clearance above paved sidewalk or
paved driveway located on public property
Clearance under veranda, porch, deck or balcony
* 12”
*
*
* 7 feet (2.1m)
3 feet (.9m) within a height 15 feet (4.5m)
above the meter / regulator assembly
3 feet (.9m)
6 inches (152mm) for appliances <10,000
pliances > 10,000 Btuh (3kw) and <50,000
pliances > 50,000 Btuh (15kw)
6 inches (152mm) for appliances <10,000
Btuh (3kw), 12 inches (305mm) for
appliances > 10,000 Btuh (3kw) and
<100,000 Btuh (30kw), 36 inches (.9m)
for appliances > 100,000 Btuh (30kw)
3 feet (.9m) above if within 10 feet
(3m) horizontally
6 feet (1.8m)
7 feet (2.1m)†
12 inches (305mm)‡
1
In accordance with the current ANSI Z223.1/NFPA 54 Natural Fuel Gas Code
2
In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code
*For clearances not specified in ANSI Z223.1/NFPA 54 or CSA
B149.1, clearance will be in accordance with local installation
codes and the requirements of the gas supplier and these
installation instructions.”
† A vent shall not terminate directly above a sidewalk or paved driveway that is located
between two single family dwellings and serves both dwellings.
‡ Permitted only if veranda, porch, deck or balcony is fully open on a minimum of
two sides beneath the floor. Blue Summit recommends avoiding this location
if possible.
* 12”
* Equal to or greater than soffit depth * Equal to or greater than soffit depth
* Equal to or greater than soffit depth * Equal to or greater than soffit depth
* No minimum to outside corner
* No minimum to outside corner
3 feet (.9m) within a height 15 feet (4.5m)
above the meter / regulator assembly
3 feet (.9m)
*
*12 inches (305mm)‡
Btuh (3kw), 9 inches (228mm) for ap-
Btuh (15kw), 12 inches (305mm) for ap-
Clearance to each side of center line ex-
Btuh (3kw), 9 inches (228mm) for ap-
Btuh (15kw), 12 inches (305mm) for ap-
supply inlet to building or the com-
bustion air inlet to any other ap-
Clearance to mechanical air sup-
Figure 35. Vent Termination Clearances for Direct Installations
507768-02B Page 29 of 56Issue 1904
Details of Intake and Exhaust Piping
Terminations for Direct Vent Installations
NOTE: In Direct Vent installations, combustion air is taken
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URRILVSUHIHUUHG)LJXUHWKURXJK)LJXUHVKRZW\SLFDO
WHUPLQDWLRQV
,QWDNHDQGH[KDXVWWHUPLQDWLRQVDUHQRWUHTXLUHGWREH
LQWKHVDPHSUHVVXUH]RQH<RXPD\H[LWWKHLQWDNHRQ
RQHVLGHRIWKHVWUXFWXUHDQGWKHH[KDXVWRQDQRWKHU
VLGH)LJXUH<RXPD\H[LWWKHH[KDXVWRXWWKHURRI
DQGWKHLQWDNHRXWWKHVLGHRIWKHVWUXFWXUH)LJXUH
,QWDNHDQGH[KDXVWSLSHVVKRXOGEHSODFHGDVFORVH
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LOOXVWUDWLRQV 0LQLPXP VHSDUDWLRQ LV ´ PP
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WHUPLQDWLRQV
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VWUDLJKWGRZQXVLQJWZRHOERZVVHH)LJXUH
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SLSLQJ DW WKH SRLQW ZKHUH LW H[LWV WKH VWUXFWXUH WR
LPSURYHWKHYHORFLW\RIH[KDXVWDZD\IURPWKHLQWDNH
SLSLQJ6HH7DEOH
Table 7. Exhaust Pipe Termination Size Reduction
Capacity Exhaust Pipe Size
Termination
Pipe Size
´PP´PP
´PP
´PP
90
´PP
110
DQG8QLWVZLWKWKHÀXVKPRXQWWHUPLQDWLRQ
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NOTE: &DUH PXVW EH WDNHQ WR DYRLG UHFLUFXODWLRQ RI
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Figure 36. Direct Vent Roof Termination Kit
(15F75 or 44J41)
UNCONDITIONED
ATTIC SPACE
SIZE PER EXHAUST PIPE
TERMINATION SIZE
REDUCTION TABLE
3” (76MM) MIN.
12” (305MM) ABOVE
AVERAGE SNOW
ACCUMULATION
3” (76MM) OR
2” (51MM) PVC
PROVIDE SUPPORT
FOR INTAKE AND
EXHAUST LINES
8” (203MM) MIN
Inches (MM)
1/2” (13MM) FOAM
INSULATION IN
UNCONDITIONED
SPACE
Figure 37.
Figure 38.
2Q¿HOGVXSSOLHGWHUPLQDWLRQVIRUVLGHZDOOH[LWH[KDXVW
SLSLQJPD\H[WHQGDPD[LPXPRILQFKHVPP
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39&EH\RQGWKHRXWVLGHZDOO,QWDNHSLSLQJVKRXOGEH
DVVKRUWDVSRVVLEOH6HH)LJXUH
507768-02BPage 30 of 56 Issue 1904
Figure 39.
* Use wall support every 24” (610 mm). Use two
wall supports if extension is greater than
24” (610 mm) but less than 48” (1219 mm).
NOTE − One wall support must be within 6” (152 mm)
from top of each pipe (intake and exhaust) to prevent
movement in any direction.
NOTE − FIELD−PROVIDED
REDUCER MAY BE
REQUIRED TO ADAPT
LARGER VENT PIPE SIZE
TO TERMINATION
STRAIGHT
APPPLICATION
EXTENDED
APPLICATION
D
B
D
B
A
2” (51mm)
Vent Pipe
3” (76mm)
Vent Pipe
A− Minimum clearance
above grade or average
snow accumulation
B− Maximum horizontal
separation between
intake and exhaust
D− Maximum exhaust
pipe length
E− Maximum wall support
distance from top of each
pipe (intake/exhaust)
12” (305 mm)
12” (305 mm)
12” (305 mm)
6” (152 mm)6” (152 mm)
6” (152 mm)6” (152 mm)
8” (203 mm)8” (203 mm)
20” (508 mm)
6” (152 mm)6” (152 mm)
A
Intake
Elbow
* WALL
SUPPORT
B
A
D
E
B
D
E
A
ALTERNATE TERMINATIONS (TEE & FORTY−FIVE DEGREE ELBOWS ONLY)
C2 -Minimum from end of
exhaust to inlet of intake
C1 -Minimum from end of
exhaust to inlet of intake
FIELD FABRICATED WALL TERMINATION
C1
C2
C1
C2
Front View of
Intake and Exhaust
Intake
Exhaust
C
B
1
2
D
A
C
3
Intake
Elbow
Exhaust
B
A
D
2” (51MM)
Vent Pipe
3” (76MM)
Vent Pipe
A− Clearance above
grade or average snow
accumulation
B− Horizontal
separation between
intake and exhaust
C− Minimum from
end of exhaust to
inlet of intake
D− Exhaust pipe length
E− Wall support distance
from top of each pipe
(intake/exhaust)
12” (305 mm) Min. 12” (305 mm) Min.
6” (152 mm) Min.
24” (610 mm) Max.
9” (227 mm) Min.
12” (305 mm) Min.
16” (405 mm) Max.
6” (152 mm) Max.
6” (152 mm) Min.
24” (610 mm) Max.
9” (227 mm) Min.
12” (305 mm) Min.
20” (508 mm) Max.
6” (152 mm) Max.
D
C
12”
1
2
E
B
A
1
The exhaust termination tee should be connected to the 2” or 3” PVC flue pipe as shown in the illustration.
Do not use an accelerator in applications that include an exhaust termination tee.
The accelerator is not required.
2
As required. Flue gas may be acidic and may adversely affect some building materials. If a side wall vent
termination is used and flue gases will impinge on the building materials, a corrosion-resistant shield
(24 inches square) should be used to protect the wall surface. If optional tee is used, the protective shield
is recommended. The shield should be constructed using wood, sheet metal or other suitable material.
All seams, joints, cracks, etc. in affected area, should be sealed using an appropriate sealant.
3
Exhaust pipe 45° elbow can be rotated to the side away from the combustion air inlet to direct exhaust
away from adjacent property. The exhaust must never be directed toward the combustion air inlet.
D
C
12”
1
2
E
B
A
507768-02B Page 31 of 56Issue 1904
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Figure 40.
Figure 41.
Figure 42.
Figure 43.
Figure 44. Direct Vent Application Using Existing
Chimney
3” - 8”
(76MM-
203MM)
STRAIGHT-CUT OR
ANGLE-CUT IN DIRECTION
OF ROOF SLOPE
SHOULDER OF FITTINGS
PROVIDE SUPPORT
OF PIPE ON TOP PLATE
ALTERNATE
INTAKE PIPE
INTAKE PIPE
INSULATION (optional)
EXTERIOR
PORTION OF
CHIMNEY
INSULATE
TO FORM
SEAL
SHEET
METAL TOP
PLATE
Minimum 12” (305MM)
above chimney top
plate or average snow
accumulation
8” - 12”
(203MM - 305MM)
3”-8”
(76MM-203MM)
* SIZE TERMINATION PIPE
PER EXHAUST PIPE TERMINATION
SIZE REDUCTION TABLE
507768-02BPage 32 of 56 Issue 1904
'HWDLOVRI([KDXVW3LSLQJ7HUPLQDWLRQVIRU1RQ
Direct Vent Applications
([KDXVW SLSHV PD\ EH URXWHG HLWKHU KRUL]RQWDOO\ WKURXJK
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39&EH\RQGWKHRXWVLGHZDOO6HH)LJXUH
Figure 45. 1RQ'LUHFW9HQW5RRI7HUPLQDWLRQ.LW
15F75 or 44J41)
UNCONDITIONED
ATTIC SPACE
3” (76MM) OR
2” (51MM) PVC
PROVIDE SUPPORT
FOR EXHAUST LINES
12” (305MM)
ABOVE AVE.
SNOW
ACCUMULATION
SIZE PER EXHAUST PIPE
TERMINATION SIZE
REDUCTION TABLE
Figure 46. 1RQ'LUHFW9HQW)LHOG6XSSOLHG:DOO
Termination
SIZE TERMINATION
PER EXHAUST PIPE
TERMINATION SIZE
REDUCTION TABLE
,IH[KDXVWSLSLQJPXVWEHUXQXSDVLGHZDOOWRSRVLWLRQ
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EHGRQHDIWHUWKH¿QDOHOERZ
SIZE TERMINATION
PER EXHAUST PIPE
TERMINATION SIZE
REDUCTION TABLE
* Use wall support every 24” (610 mm). Use two supports of extension is greater than 24”
(610 mm) but less than 48” (1219 mm).
Figure 47. 1RQ'LUHFW9HQW)LHOG6XSSOLHG:DOO
Termination Extended
STRAIGHT-CUT OR
ANGLE-CUT IN DIRECTION
OF ROOF SLOPE
SHOULDER OF FITTINGS
PROVIDE SUPPORT
OF PIPE ON TOP PLATE
EXTERIOR
PORTION OF
CHIMNEY
INSULATE
TO FORM
SEAL
SHEET
METAL TOP
PLATE
Minimum 12” (305MM)
above chimney top
plate or average snow
accumulation
* SIZE TERMINATION PIPE
PER EXHAUST PIPE TERMINATION
SIZE REDUCTION TABLE
Figure 48. 1RQ'LUHFW9HQW$SSOLFDWLRQ8VLQJ([LVWLQJ
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507768-02B Page 33 of 56Issue 1904
Exhaust through Crawl Space Vent Option
$OO´FRQGHQVLQJJDVIXUQDFHVDUHQRZDSSURYHG
WREHYHQWHGGRZQWKURXJKDFUDZOVSDFH(QVXUHDYHQW
SLSHGUDLQNLW:86$RU=&DQDGDLVXVHGDV
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6HHWKHIROORZLQJ¿JXUHV
&RQVXOW WKH YHQW WDEOHV IRU YHQW OHQJWKV DQG DSSURYHG
PDWHULDOV
2” or 3”
Sanitary Tee
1/2” PVC
Drain Stub
Drain Trap
Assembly
Rubber Boot (51W18)
Drain Plug (15Z70)
Clamp
(51W18 Only)
From
Furnace
To Vent
Termination
Drain Trap
(assembled)
Figure 49. .LW:86$=&DQDGD3DUWV
,GHQWL¿FDWLRQDQG$VVHPEO\
Exhaust from
Furnace
To Termination
Exhaust from
Furnace
To Termination
* Kit 51W18 is shown.
Figure 50. Crawl Space Vent Pipe Drain Trap
Assembled Incorrectly
Figure 51. 8SÀRZRU'RZQÀRZ)XUQDFHZLWK([KDXVWWKURXJK&UDZO6SDFH
KIT 51W18 (USA)
Basement Floor
To Termination
1/2” PVC to
Code-Approved
Drain
24” max.
Downflow Furnace
Exhaust
KIT 15Z70 (Canada)
* Kit 51W18 is shown.
NOTE: 8SÀRZIXUQDFHVH[KDXVWIURPWKHOHIWVLGH$OOGLPHQVLRQVVKRZQDUHW\SLFDOIRUXSÀRZRUGRZQÀRZIXUQDFHV
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507768-02B3DJHRI Issue 1904
Condensate Piping
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WUDS WR IXUQDFH FRQGHQVDWH RXWOHW 3LSLQJ IURP IXUQDFH
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507768-02B Page 35 of 56Issue 1904
Figure 53. Condensate Trap Locations
8QLWVKRZQLQXSÀRZSRVLWLRQZLWKUHPRWHWUDS
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507768-02BPage 36 of 56 Issue 1904
Figure 55. Condensate Trap Locations
3LSLQJIURPIXUQDFHPXVWVORSHGRZQDPLQLPXPRI´SHUIWWRZDUGWUDS
Figure 56. Unit with Cooling Coil Using Separate
Drain
Figure 57. Evaporator Coil Using a Common Drain
Figure 58. Evaporator Coil Using a Common Drain
3LSLQJIURPIXUQDFHDQGHYDSRUDWRUFRLOPXVWVORSHGRZQDPLQLPXP´SHUIWWRZDUGWUDS
507768-02B Page 37 of 56Issue 1904
Figure 59. 7UDS'UDLQ$VVHPEO\8VLQJ´39&RU´39&
507768-02BPage 38 of 56 Issue 1904
Gas Piping
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Figure 60.
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IMPORTANT
FIRE OR EXPLOSION HAZARD
)DLOXUH WR IROORZ WKH VDIHW\ ZDUQLQJV H[DFWO\ FRXOG
UHVXOW LQ VHULRXV LQMXU\ GHDWK RU SURSHUW\ GDPDJH
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507768-02B Page 39 of 56Issue 1904
Figure 61. Gas Piping
8SÀRZ$SSOLFDWLRQV
Figure 62. Gas Piping
Horizontal Applications
507768-02B3DJHRI Issue 1904
*DV3LSH&DSDFLW\)7ñ+5N/+5
Table 8.
Nominal
Iron Pipe
6L]H
inches
(mm)
Internal
Diameter
LQFKHV
(mm)
/HQJWKRI3LSHIHHWP
10
(3.048)
20
(6.096)
30
(9.144)
40
(12.192)
50
(15.240)
60
(18.288)
70
(21.336)
80
(24.384)
90
(27.432)
100
(30.480)
175
120
97
82
73
66
61
57
53
50
360
250
200
170
151
138
125
118
110
103
1
680
375
320
285
260
220
205
195
950
770
660
580
530
2100
1180
990
900
810
750
690
650
620
2
3950
2750
2200
1900
1680
1520
1300
1220
1150
6300
3520
3000
2650
2250
2050
1950
1850
3
11000
7700
6250
5300
3900
3700
3250
23000
15800
12800
10900
9700
9700
8100
7500
7200
6700
NOTE&DSDFLW\JLYHQLQFXELFIHHWRIJDVSHUKRXUNLOROLWHUVRIJDVSHUKRXUDQGEDVHGRQVSHFL¿FJUDYLW\JDV
507768-02B 3DJHRIIssue 1904
Electrical
ELECTROSTATIC DISCHARGE (ESD)
Precautions and Procedures
(OHFWURVWDWLFGLVFKDUJHFDQDIIHFWHOHFWURQLFFRPSRQHQWV
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WHFKQLFLDQDWWKHVDPHHOHFWURVWDWLFSRWHQWLDO1HXWUDOL]H
HOHFWURVWDWLFFKDUJHE\WRXFKLQJKDQGDQGDOO WRROVRQ
DQ XQSDLQWHG XQLW VXUIDFH VXFK DV WKH JDV YDOYH RU
EORZHUGHFNEHIRUHSHUIRUPLQJDQ\VHUYLFHSURFHGXUH
CAUTION
Figure 63.
Figure 64.
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ER[ PD\ EH PRYHG WR WKH ULJKW VLGH RI WKH IXUQDFH WR
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WKHIXUQDFHVRWKDWSRZHUFDQEHWXUQHGRIIIRUVHUYLFLQJ
%HIRUHFRQQHFWLQJWKHWKHUPRVWDWFKHFNWRPDNHVXUHWKH
ZLUHVZLOOEHORQJHQRXJKIRUVHUYLFLQJDWDODWHUGDWH0DNH
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UHPRYDORIEORZHUIRUVHUYLFH
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WKDW DUH SRODULW\ VHQVLWLYH 0DNH VXUH WKDW WKH IXUQDFH LV
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Accessory Terminals
2QH OLQH YROWDJH ³$&&´ ´ VSDGH WHUPLQDO LV SURYLGHG
RQ WKH IXUQDFH FRQWURO ERDUG$Q\ DFFHVVRU\ UDWHG XS WR
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507768-02B3DJHRI Issue 1904
XVH DQ H[WHUQDO UHOD\ 6HH )LJXUH IRU FRQWURO ERDUG
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Figure 65.
2QH9³+´´VSDGHWHUPLQDOLVSURYLGHGRQWKHIXUQDFH
FRQWUROERDUG$Q\KXPLGL¿HUUDWHGXSWRDPSFDQEH
FRQQHFWHGWRWKLVWHUPLQDOZLWKWKHJURXQGOHJRIWKHFLUFXLW
FRQQHFWHG WR JURXQG RU WKH ³&´ WHUPLQDO 6HH )LJXUH
IRUFRQWUROERDUGFRQ¿JXUDWLRQ7KLVWHUPLQDOLVHQHUJL]HG
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DSSURSULDWHGXDOIXHOWKHUPRVWDWLQVWUXFWLRQV
Indoor Blower Speeds
:KHQ WKH WKHUPRVWDW LV VHW WR ³)$1 21´ WKH LQGRRU
EORZHU ZLOO UXQ FRQWLQXRXVO\ RQ WKH IDQ VSHHG ZKHQ
WKHUHLVQRFRROLQJRUKHDWLQJGHPDQG
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• 7KH IXUQDFH UHTXLUHV YROWV 5DQJH
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Figure 66. Typical Field Wiring Diagram
NOTE-
IF ANY WIRE IN THIS APPLIANCE IS REPLACED,
IT MUST BE REPLACED WITH WIRE OF LIKE
SIZE, RATING, INSULATION THICKNESS AND
TERMINATION.
WARNING-
ELECTRIC SHOCK HAZARD. CAN CAUSE
INJURY OR DEATH. UNIT MUST BE GROUNDED
IN ACCORDANCE WITH NATIONAL AND LOCAL
CODES.
‘R’ IS REQUIRED ON SOME OUTDOOR UNITS
L13 POWER CHOKE USED ON 3/4 AND 1 HP
ONLY
S145 IS USED WITH HONEYWELL GAS VALVE
WHEN APPLIED IN LP GAS UNTIS
507768-02B 3DJHRIIssue 1904
Figure 67. Typical Wiring Diagram
507768-02B3DJHRI Issue 1904
8QLW6WDUW8S
FOR YOUR SAFETY READ BEFORE OPERATING
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WKH IXUQDFH DQG WR UHSODFH DOO JDV FRQWUROV FRQWURO
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WARNING
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SURGXFWRUSURSHUW\GDPDJH6KRXOGWKHJDV
VXSSO\ IDLO WR VKXW RII RU LI RYHUKHDWLQJ
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EHIRUH VKXWWLQJ RII WKH HOHFWULFDO EORZHU
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SURFHGXUH
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PDLQWHQDQFH WXUQ WKH HOHFWULFDO SRZHU WR XQLW 2)) DW
GLVFRQQHFWVZLWFK
CAUTION
BEFORE LIGHTINGWKHXQLWVPHOODOODURXQGWKHIXUQDFH
DUHD IRU JDV %H VXUH WR VPHOO QH[W WR WKH ÀRRU EHFDXVH
VRPHJDVLVKHDYLHUWKDQDLUDQGZLOOVHWWOHRQWKHÀRRU
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H[SORVLRQ
Placing the Furnace into Operation
7KLV IXUQDFH LV HTXLSSHG ZLWK DQ DXWRPDWLF KRW VXUIDFH
LJQLWLRQV\VWHP'RQRWDWWHPSWWRPDQXDOO\OLJKWEXUQHUV
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EXUQHUVZLOODXWRPDWLFDOO\OLJKW7KHLJQLWRUGRHVQRWJHWKRW
ZKHQWKHUHLVQRFDOOIRUKHDWRQWKHVHXQLWV
Figure 68. Integrated Control
(Automatic Hot Surface Ignition System)
Terminal Designations
+80 +XPLGL¿HU9$&
LINE ,QSXW9$&
;)05 7UDQVIRUPHU9$&
CIRC ,QGRRU%ORZHU9$&
EAC (OHFWURQLF$LU&OHDQHU9$&
COOL %ORZHU&RROLQJ6SHHG9$&
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&20 &RPPRQ9$&
+80 +XPLGL¿HU9$&
507768-02B 3DJHRIIssue 1904
Priming Condensate Trap
7KH FRQGHQVDWH WUDS VKRXOG EH SULPHG ZLWK ZDWHU SULRU
WRVWDUWXSWRHQVXUHSURSHUFRQGHQVDWHGUDLQDJH(LWKHU
SRXU À R] PO RI ZDWHU LQWR WKH WUDS RU IROORZ
WKHVHVWHSVWRSULPHWKHWUDS
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RSHUDWLRQ
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$OORZWKHEXUQHUVWR¿UHIRUDSSUR[LPDWHO\PLQXWHV
$GMXVW WKH WKHUPRVWDW WR GHDFWLYDWH WKH KHDWLQJ
GHPDQG
:DLW IRU WKH FRPEXVWLRQ DLU LQGXFHU WR VWRS 6HW WKH
WKHUPRVWDW WR LQLWLDWH D KHDWLQJ GHPDQG DQG DJDLQ
DOORZWKHEXUQHUVWR¿UHIRUDSSUR[LPDWHO\PLQXWHV
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WARNING
Gas Valve Operation
See Figure 69
STOP!5HDG WKH VDIHW\ LQIRUPDWLRQ DW WKH EHJLQQLQJ
RIWKLVVHFWLRQ
6HWWKHWKHUPRVWDWWRWKHORZHVWVHWWLQJ
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NOTE: :KHQ XQLW LV LQLWLDOO\ VWDUWHG VWHSV WKURXJK
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Figure 69.
Turning Off Gas to Unit
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7XUQRIIDOOHOHFWULFDOSRZHUWRWKHXQLWLIVHUYLFHLVWR
EHSHUIRUPHG
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5HSODFHWKHXSSHUDFFHVVSDQHO
Failure To Operate
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,VWKHXQLWLJQLWLRQV\VWHPLQORFNRXW",IWKHXQLWORFNV
RXWDJDLQLQVSHFWWKHXQLWIRUEORFNDJHV
Heating Sequence Of Operation
:KHQWKHUPRVWDWFDOOVIRUKHDWFRPEXVWLRQDLULQGXFHU
VWDUWV
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507768-02B3DJHRI Issue 1904
,I ÀDPH LV QRW GHWHFWHG DIWHU ¿UVW LJQLWLRQ WULDO WKH
LJQLWLRQ FRQWURO ZLOO UHSHDW VWHSV DQG IRXU PRUH
WLPHV EHIRUH ORFNLQJ RXW WKH JDV YDOYH 7KH LJQLWLRQ
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PRYH WKHUPRVWDW IURP ³+HDW´ WR ³2))´ WKHQ EDFN WR
³+HDW´+HDWLQJVHTXHQFHWKHQUHVWDUWVDWVWHS
Gas Pressure Adjustment
Gas Flow (Approximate)
Gas Meter Clocking Chart
Capacity
Seconds for One Revolution
Natural LP
1 cu ft
Dial
2 cu ft
Dial
1 cu ft
Dial
2 cu ft
Dial
80 160 200
-070 55 110 136 272
-090 82 102
-110 33 66 82
1DWXUDOEWXFXIW/3EWXFXIW
Table 9.
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JDV ÀRZ 'HWHUPLQH WLPH LQ VHFRQGV IRU WZR UHYROXWLRQV
RI JDV WKURXJK WKH PHWHU 7ZR UHYROXWLRQV DVVXUHV D
PRUHDFFXUDWH WLPH'LYLGHE\WZRDQGFRPSDUHWR WLPH
LQ )LJXUH ,I PDQLIROG SUHVVXUH PDWFKHV 7DEOH DQG
UDWH LV LQFRUUHFW FKHFN JDV RUL¿FHV IRU SURSHU VL]H DQG
UHVWULFWLRQ5HPRYHWHPSRUDU\JDVPHWHULILQVWDOOHG
NOTE: 7R REWDLQ DFFXUDWH UHDGLQJVKXW RII DOO RWKHU JDV
DSSOLDQFHVFRQQHFWHGWRPHWHU
Supply Pressure Measurement
:KHQ WHVWLQJ VXSSO\ JDV SUHVVXUH XVH WKH ´ 137
SOXJJHGWDSRUSUHVVXUHSRVWORFDWHGRQWKHJDVYDOYHWR
IDFLOLWDWH WHVW JDXJH FRQQHFWLRQ 6HH )LJXUH &KHFN
JDV OLQH SUHVVXUH ZLWK XQLW ¿ULQJ DW PD[LPXP UDWH /RZ
SUHVVXUHPD\UHVXOWLQHUUDWLFRSHUDWLRQRUXQGHU¿UH+LJK
SUHVVXUHFDQUHVXOWLQSHUPDQHQWGDPDJHWRJDVYDOYHRU
RYHU¿UH
2QPXOWLSOHXQLWLQVWDOODWLRQVHDFKXQLWVKRXOGEHFKHFNHG
VHSDUDWHO\ZLWKDQGZLWKRXWRWKHUXQLWVRSHUDWLQJ6XSSO\
SUHVVXUHPXVWIDOOZLWKLQUDQJHOLVWHGLQ7DEOH
Manifold Pressure Measurement
5HPRYH WKH WKUHDGHG SOXJ IURP WKH RXWOHW VLGH RI
WKH JDV YDOYH DQG LQVWDOO D ¿HOG SURYLGHG EDUEHG
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SUHVVXUH
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VWDWH
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PDQLIROG SUHVVXUH DQG FRPSDUH WR YDOXH JLYHQ LQ
7DEOH
NOTE: 6KXWXQLWRIIDQGUHPRYHPDQRPHWHUDVVRRQDVDQ
DFFXUDWHUHDGLQJKDVEHHQREWDLQHG7DNHFDUHWRUHPRYH
EDUEHG¿WWLQJDQGUHSODFHWKUHDGHGSOXJ
Proper Combustion
)XUQDFHVKRXOGRSHUDWHPLQLPXPPLQXWHVZLWKFRUUHFW
PDQLIROG SUHVVXUH DQG JDV ÀRZ UDWH EHIRUH FKHFNLQJ
FRPEXVWLRQ 7DNH FRPEXVWLRQ VDPSOH EH\RQG WKH ÀXH
RXWOHWDQGFRPSDUHWRWKHWDEOHVEHORZ
Table 10.
Capacity CO
2
% for Nat CO
2
% for L.P.
$OO
7KHPD[LPXPFDUERQPRQR[LGHUHDGLQJVKRXOGQRWH[FHHG
SSP
Table 11.
0DQLIROGDQG6XSSO\/LQH3UHVVXUHIW
Capacity Gas
Manifold Pressure in. w.g.
Supply Line Pressure
in. w.g.
IW
IW IW IW IW IW
$OO6L]HV
1DWXUDO
/3
Propane
NOTE$QDWXUDOWR/3SURSDQHJDVFKDQJHRYHUNLWLVQHFHVVDU\WRFRQYHUWWKLVXQLW5HIHUWRWKHFKDQJHRYHUNLWLQVWDOODWLRQ
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507768-02B 3DJHRIIssue 1904
High Altitude Information
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507768-02B 3DJHRIIssue 1904
Other Unit Adjustments
Primary Limit
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507768-02BPage 50 of 56 Issue 1904
Blower Performance
BG961UH045BE12 Performance (Less Filter)
External
Static
Pressure
in. w.c.
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High 0HGLXP+LJK Medium 0HGLXP/RZ Low
cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts
335 1285 235 1190 170 910 85 870 75
350 1260 1155 185 885 95 830 85
365 1235 255 1125 200 860 105 800 90
1375 370 1205 265 1090 210 825 115 755 95
1350 380 1175 275 1055 215 780 125 710 105
1315 385 285 1020 230 735 130 665 115
375 1110 295 980 685 620 125
1$ 1$ 1070 305 250 575 135
1$ 1$ 1020 310 905 260 600 155 530
BG961UH070BE12 Performance (Less Filter)
External
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Pressure
in. w.c.
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cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts
315 1315 215 1215 165 930 85 925 75
335 1275 230 1170 180 905 860 80
1125 190 870 101 800 85
1380 355 1205 250 1090 200 830 109 760 95
370 1175 265 1055 210 790 117 710 105
1315 385 1150 280 1020 220 735 129 665 115
1275 390 1110 290 985 230 685 137 625 125
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cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts
1765 375 1535 250 180 1315 155 1155 115
1735 390 1500 260 1365 200 1270 165 1130 125
1700 275 1330 215 1230 175 1095 135
1660 290 1295 225 1195 190 1055
300 1265 235 1165 200 1010 155
1615 1370 315 1230 250 1125 215 965 165
1575 325 1190 265 1080 230 925 180
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507768-02B Page 51 of 56Issue 1904
BG961UH110CE20 Performance (Less Filter)
External
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Bottom Return Air, Side Return Air with Optional Return Air Base, Return Air from
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2220 655 1975 1800 325 1665 390 1050 180 2180 685 1910 1750 1660 285 195
2185 680 1925 1750 1625 285 200 2155 705 1885 1720 360 1610 295 205
2150 705 1880 1710 365 1590 300 1390 220 2130 725 1855 1685 380 1565 305 1380 220
2110 720 1850 1680 380 1560 320 1350 230 2085 1825 510 1655 390 1535 325 1335 230
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1980 790 1705 565 1525 375 1170 280 1960 795 1690 575 1505 1385 385 1165 290
1950 795 1670 580 1360 390 293 1895 790 1650 590 1335 395 1120 295
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507768-02BPage 52 of 56 Issue 1904
Service
ELECTRICAL SHOCK, FIRE, OR EXPLOSION
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507768-02B Page 53 of 56Issue 1904
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Planned Service
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507768-02B Page 55 of 56Issue 1904
Repair Parts List
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Requirements for Commonwealth of Massachusetts
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