507270-03B Page 1 of 58Issue 1904
INSTALLATION INSTRUCTIONS
BG921UH & BG951UH
Warm Air Gas Furnace
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Table of Contents
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Gas Furnace
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507270-03BPage 2 of 58 Issue 1904
Unit Dimensions
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507270-03B Page 3 of 58Issue 1904
Parts Arrangement
Figure 1.
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Gas Furnace
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507270-03B Page 5 of 58Issue 1904
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507270-03BPage 6 of 58 Issue 1904
General
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507270-03B Page 7 of 58Issue 1904
Combustion, Dilution & Ventilation Air
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507270-03B Page 9 of 58Issue 1904
Figure 8. (TXLSPHQWLQ&RQ¿QHG6SDFH
(Inlet Air from Ventilated Attic & Outlet Air to Outside)
Ventilation Louvers
Inlet Air
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Furnace
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Screen
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Outside)
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Louvers
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Inlet Air
Minimum
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above Crawl
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* See Maximum Vent Lengths table
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Installation
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507270-03B Page 11 of 58Issue 1904
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507270-03BPage 12 of 58 Issue 1904
Removing the Bottom Panel
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Figure 18. Horizontal Application
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507270-03B Page 13 of 58Issue 1904
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Figure 20.
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Table 1.
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Width
Filter Size
Side Return Bottom Return
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507270-03B3DJHRI Issue 1904
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507270-03B Page 15 of 58Issue 1904
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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
´
Concentric
Kit
´
Concentric
Kit
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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
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3 <(6 <(6 <(6 <(6
135 3 <(6 <(6 <(6
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507270-03BPage 16 of 58 Issue 1904
Venting Practices
Figure 21.
Removal of the Furnace from Common Vent
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Figure 22.
507270-03B Page 17 of 58Issue 1904
Exhaust Piping
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CAUTION
Vent Piping Guidelines
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Table 4. Minimum Vent Pipe Lengths
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507270-03BPage 18 of 58 Issue 1904
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Figure 24.
045, 070,
090, 110,
135
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 or
Table 6 to find max
pipe length.
7
507270-03B Page 19 of 58Issue 1904
BG921UH Maximum Allowable Intake or Exhaust Vent Length in Feet
6WDQGDUG7HUPLQDWLRQDW(OHYDWLRQIW
Number of 90°
Elbows Used
2" Pipe 3LSH 3" Pipe
Capacity Capacity Capacity
045 070 090 045 070 090 045 070 090
1 76 61 39 110 95 63 132 132 113
27156 105 90 58 127 127 108
3 66 51 29 100 85 53 122 122 103
61 95 80 117 117 98
556 19 90 75 112 112 93
65136 85 70 38 107 107 88
7 31 9 80 65 33 102 102 83
8 26
QD
75 60 28 97 97 78
9 3621 705523929273
10 31 16 65 50 18 87 87 68
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Number of 90°
Elbows Used
2" Pipe 3LSH 3" Pipe
Capacity Capacity Capacity
045 070 090 045 070 090 045 070 090
1 68 53 37 100 85 59 116 116 109
263 32 95 80 111 111
358 27 90 75 106 106 99
53 38 22 85 70 101 101
5 33 17 80 65 39 96 96 89
6 28 12 75 60 91 91
7 3823 7 705529868679
83318
QD
65 50 81 81
92813 60 19 76 76 69
10 23 8 55 71 71
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Table 5A.
507270-03BPage 20 of 58 Issue 1904
BG921UH Maximum Allowable Exhaust Vent Length with Furnace Installed in a Closet or Basement Using
Ventilated Attic or Crawl Space for Intake in Feet
6WDQGDUG7HUPLQDWLRQDW(OHYDWLRQIW
Number of 90°
Elbows Used
2" Pipe 3LSH 3" Pipe
Capacity Capacity Capacity
045 070 090 045 070 090 045 070 090
1 6651299580 112 112 93
261 90 75 107 107 88
356 19 85 70 38 102 102 83
51 36 80 65 33 97 97 78
5 31 9 756028929273
6 26 70 55 23 87 87 68
73621
QD
65 50 18 82 82 63
83116 60 13 77 77 58
92611 55 8727253
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Table 5B.
507270-03B Page 21 of 58Issue 1904
Table 6A.
BG951UH Maximum Allowable Intake or Exhaust Vent Length in Feet
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Number of
90° Elbows
Used
2" Pipe 3LSH 3" Pipe
Capacity Capacity Capacity
045 070 090 110 135 045 070 090 110 135 045 070 090 110 135
1 76613919
QD
110956338
QD
132 132 113 113 109
27156 105 90 58 33 127 127 108 108
3 66 51 29 9 100 85 53 28 122 122 103 103 99
61
QD
95 80 23 117 117 98 98
556 19 90 75 18 112 112 93 93 89
65136 85 70 38 13 107 107 88 88
7 31 9 80 65 33 8 102 102 83 83 79
8 26
QD
75 60 28
QD
97 97 78 78
9 3621 705523 9292737369
10 31 16 65 50 18 87 87 68 68
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Number of
90° Elbows
Used
2" Pipe 3LSH 3" Pipe
Capacity Capacity Capacity
045 070 090 110 135 045 070 090 110 135 045 070 090 110 135
1 766139
QD QD
110 95 63 38
QD
132 132 113 113 109
27156 105 90 58 33 127 127 108 108
3 66 51 29 100 85 53 28 122 122 103 103 99
61 95 80 23 117 117 98 98
556 19 90 75 18 112 112 93 93 89
65136 85 70 38 13 107 107 88 88
7 31 9 80 65 33 8 102 102 83 83 79
8 26
QD
75 60 28
QD
97 97 78 78
9 3621 705523 9292737369
10 31 16 65 50 18 87 87 68 68
6L]HLQWDNHDQGH[KDXVWSLSHOHQJWKVHSDUDWHO\9DOXHVLQWDEOHDUHIRU,QWDNH25([KDXVWQRWFRPELQHGWRWDO%RWK,QWDNHDQ
G
([KDXVWPXVWEHVDPHSLSHVL]H
507270-03BPage 22 of 58 Issue 1904
Table 6B.
BG951UH Maximum Allowable Intake or Exhaust Vent Length in Feet
&RQFHQWULF7HUPLQDWLRQDW(OHYDWLRQIW
Number of
90° Elbows
Used
2" Pipe 3LSH 3" Pipe
Capacity Capacity Capacity
045 070 090 110 135 045 070 090 110 135 045 070 090 110 135
1 68533717
QD
100 85 59
QD
116 116 109 109 100
263 32 12 95 80 29 111 111 95
358 27 7 90 75 106 106 99 99 90
53 38 22
QD
85 70 19 101 101 85
5 33 17 80 65 39 96 96 89 89 80
6 28 12 75 60 99191 75
7 38 23 7 70 55 29
QD
86 86 79 79 70
83318
QD
65 50 81 81 65
92813 60 19 76 76 69 69 60
10 23 8 55 71 71 55
&RQFHQWULF7HUPLQDWLRQ(OHYDWLRQIW
Number of
90° Elbows
Used
2" Pipe 3LSH 3" Pipe
Capacity Capacity Capacity
045 070 090 110 135 045 070 090 110 135 045 070 090 110 135
1 685337
QD QD
100 85 59
QD
116 116 109 109 100
263 32 95 80 29 111 111 95
358 27 90 75 106 106 99 99 90
53 38 22 85 70 19 101 101 85
5 33 17 80 65 39
96 96 89 89 80
6 28 12 75 60 99191 75
7 38 23 7 70 55 29
QD
86 86 79 79 70
83318
QD
65 50 81 81 65
92813 60 19 76 76 69 69 60
10 23 8 55 71 71 55
6L]HLQWDNHDQGH[KDXVWSLSHOHQJWKVHSDUDWHO\9DOXHVLQWDEOHDUHIRU,QWDNH25([KDXVWQRWFRPELQHGWRWDO%RWK,QWDNHDQG
([KDXVWPXVWEHVDPHSLSHVL]H
507270-03B Page 23 of 58Issue 1904
Table 6C.
BG951UH Maximum Allowable Exhaust Vent Length with Furnace Installed in a Closet or Basement Using
Ventilated Attic or Crawl Space for Intake in Feet
6WDQGDUG7HUPLQDWLRQDW(OHYDWLRQIW
Number of
90° Elbows
Used
2" Pipe 3LSH 3" Pipe
Capacity Capacity Capacity
045 070 090 110 135 045 070 090 110 135 045 070 090 110 135
1 665129 9
QD
95 95 73 38
QD
113 112 93 93 89
261 90 90 68 33 108 107 88 88
356 19
QD
85 85 63 28 103 102 83 83 79
51 36 80 80 58 23 98 97 78 78
5 31 9 75755318 9392737369
6 26 70 70 13 88 87 68 68
73621
QD
65 65 8 8382636359
8 31 16 60 60 38 3 78 77 58 58
9 2611 555533
QD
73 72 53 53
10 21 6 50 50 28 68 67
6WDQGDUG7HUPLQDWLRQ(OHYDWLRQIW
Number of
90° Elbows
Used
2" Pipe 3LSH 3" Pipe
Capacity Capacity Capacity
045 070 090 110 135 045 070 090 110 135 045 070 090 110 135
1 665129
QD QD
95 95 73 38
QD
113 112 93 93 89
261 90 90 68 33 108 107 88 88
356 19 85 85 63 28 103 102 83 83 79
51 36 80 80 58 23 98 97 78 78
5 31 9 75755318 9392737369
6 26 70 70 13 88 87 68 68
73621
QD
65 65 8 8382636359
8 31 16 60 60 38 3 78 77 58 58
9 2611 555533
QD
73 72 53 53
10 21 6 505028 6867
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FDOFXODWLRQ
507270-03B3DJHRI Issue 1904
Figure 25.
Figure 26.
507270-03B Page 25 of 58Issue 1904
Figure 27.
Figure 28.
Intake Piping
6HH)LJXUHWKURXJK)LJXUH
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LQWDNHDLUZLOOEHGUDZQLQWRWKHIXUQDFHIURPWKHVXUURXQGLQJVSDFHWKHLQGRRUDLUTXDOLW\PXVWEHFRQVLGHUHGDQGJXLGHOLQHV
OLVWHGLQ&RPEXVWLRQ'LOXWLRQDQG9HQWLODWLRQ$LUVHFWLRQPXVWEHIROORZHG
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RXWGRRUV
8VHWUDQVLWLRQVROYHQWFHPHQWRUDVKHHWPHWDOVFUHZWRVHFXUHWKHLQWDNHSLSHWRWKHLQOHWDLUFRQQHFWRU
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507270-03BPage 26 of 58 Issue 1904
Figure 29.
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CAUTION
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DLULQWDNHVFUHHQWRURXWHWKHLQWDNHSLSLQJDVVKRZQLQ
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Figure 30.
7KHDLULQWDNHSLSLQJPXVWQRWWHUPLQDWHWRRFORVHWRWKH
ÀRRULQJRUDSODWIRUP(QVXUHWKDWWKHLQWDNHDLULQOHWZLOO
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RU7DEOH&,I´GLDPHWHUSLSHLVXVHGUHGXFHWR´
GLDPHWHUSLSHDWWKHWHUPLQDWLRQSRLQWWRDFFRPPRGDWH
WKHGHEULVVFUHHQ
8VHDVKHHWPHWDOVFUHZWRVHFXUHWKHLQWDNHSLSHWR
WKHFRQQHFWRULIGHVLUHG
Figure 31. (TXLSPHQWLQ&RQ¿QHG6SDFH
(Inlet Air from Ventilated Attic & Outlet Air to Outside)
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
NOTE7KHLQOHWDQGRXWOHWDLURSHQLQJV VKDOO HDFKKDYH DIUHH
DUHD RI DW OHDVW RQH VTXDUH LQFK SHU %WX PP
2
per
N:SHUKRXURIWKHWRWDOLQSXWUDWLQJRIDOOHTXLSPHQWLQWKH
HQFORVXUH
507270-03B Page 27 of 58Issue 1904
Figure 32. (TXLSPHQWLQ&RQ¿QHG6SDFH
(Inlet Air from Ventilated Crawl Space & 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
NOTE7KHLQOHWDQGRXWOHWDLURSHQLQJV VKDOO HDFKKDYH DIUHH
DUHD RI DW OHDVW RQH VTXDUH LQFK SHU %WX PP
2
per
N:SHUKRXURIWKHWRWDOLQSXWUDWLQJRIDOOHTXLSPHQWLQWKH
HQFORVXUH
General Guidelines for Vent Terminations
,Q 1RQ±'LUHFW 9HQW DSSOLFDWLRQV FRPEXVWLRQ DLU LV WDNHQ
IURP LQGRRUV DQG WKH ÀXH JDVHV DUH GLVFKDUJHG WR WKH
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7KLVIXUQDFHLVWKHQFODVVL¿HGDVDGLUHFWYHQW&DWHJRU\,9
JDVIXUQDFH
Conditioned
Space
Unconditioned
Space
Exhaust
Pipe
Intake
Pipe
Conditioned
Space
Pipe Insulation
Figure 33. Insulating Exhaust Pipe in an
Unconditioned Space
Table 7.
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
045 070 090 110 135
WR
WR
PVC
2
PP PVC
2
PP PVC
2
PP PVC
2
PP PVC
2
PP
LQ 18 16 31 28 50 30 30 1$ 1$
LQ 13 1$ 1$ 1$ 56 1$ 1$ 1$
LQ 9 9 18 18 35 35 52 52
WR
WR
LQ 9 8 18 16 32 29 30 30 1$ 1$
LQ 5 1$ 13 1$ 1$ 1$ 1$ 1$
LQ 1$ 1$ 8 8 19 19 26 26 30 30
WR
WR
LQ 5 3 12 10 22 19 30 27 1$ 1$
LQ 1$ 1$ 7 1$ 15 1$ 22 1$ 1$ 1$
LQ 1$ 1$ 1$ 1$ 10 10 16 16 18 18
1
5HIHUWR0LQLPXP'HVLJQ7HPSHUDWXUHWDEOHSURYLGHGLQWKHFXUUHQWHGLWLRQRIWKH$6+5$()XQGDPHQWDOV+DQGERRN
2
3RO\3URS\OHQHYHQWSLSH33E\'XUDYHQWDQG&HQWURWKHUP
127(&RQFHQWULFWHUPLQDWLRQVDUHWKHHTXLYDOHQWRI¶DQGVKRXOGEHFRQVLGHUHGZKHQPHDVXULQJSLSHOHQJWK
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127(,ILQVXODWLRQLVUHTXLUHGLQDQXQFRQGLWLRQHGVSDFHLWPXVWEHORFDWHGRQWKHSLSHFORVHVWWRWKHIXUQDFH6HH)LJXUH
507270-03BPage 28 of 58 Issue 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'LUHFW9HQW,QVWDOODWLRQV
507270-03B Page 29 of 58Issue 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 Vent Installations
507270-03BPage 30 of 58 Issue 1904
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IMPORTANT
For Canadian Installations Only:
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PP
IMPORTANT
Details of Intake and Exhaust Piping
Terminations for Direct Vent Installations
NOTE: In Direct Vent installations, combustion air is taken
IURPRXWGRRUVDQGÀXHJDVHVDUHGLVFKDUJHGWRRXWGRRUV
NOTE: )OXHJDVPD\EHVOLJKWO\DFLGLFDQGPD\DGYHUVHO\
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WKURXJKDQGRXWVLGHZDOORUYHUWLFDOO\WKURXJKWKHURRI,Q
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WHUPLQDWLRQV
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LQWKHVDPHSUHVVXUH]RQH<RXPD\H[LWWKHLQWDNHRQ
RQHVLGHRIWKHVWUXFWXUHDQGWKHH[KDXVWRQDQRWKHU
VLGH)LJXUH<RXPD\H[LWWKHH[KDXVWRXWWKHURRI
DQGWKHLQWDNHRXWWKHVLGHRIWKHVWUXFWXUH)LJXUH
,QWDNHDQGH[KDXVWSLSHV VKRXOG EH SODFHGDVFORVH
WRJHWKHU DV SRVVLEOH DW WHUPLQDWLRQ HQG UHIHU WR
LOOXVWUDWLRQV 0LQLPXP VHSDUDWLRQ LV ´ PP
RQ URRI WHUPLQDWLRQV DQG ´ PP RQ VLGHZDOO
WHUPLQDWLRQV
2QURRIWHUPLQDWLRQVWKHLQWDNHSLSLQJVKRXOGWHUPLQDWH
VWUDLJKWGRZQXVLQJWZRHOERZVVHH)LJXUH
([KDXVW SLSLQJ PXVW WHUPLQDWH VWUDLJKW RXW RU XS DV
VKRZQ $ UHGXFHU PD\ EH UHTXLUHG RQ WKH H[KDXVW
SLSLQJ DW WKH SRLQW ZKHUH LW H[LWV WKH VWUXFWXUH WR
LPSURYHWKHYHORFLW\RIH[KDXVWDZD\IURPWKHLQWDNH
SLSLQJ6HH7DEOH
Table 8. Exhaust Pipe Termination Size Reduction
Capacity Exhaust Pipe Size
Termination Pipe
Size
DQG
´PP´
PP´PP
´PP
*090
´PP110
135 ´PP
DQGXQLWVZLWKWKHÀXVKPRXQWWHUPLQDWLRQ
PXVWXVHWKH´DFFHOHUDWRUVXSSOLHGZLWKWKHNLW
NOTE: &DUH PXVW EH WDNHQ WR DYRLG UHFLUFXODWLRQ RI
H[KDXVWEDFNLQWRLQWDNHSLSH
507270-03B Page 31 of 58Issue 1904
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
IRU ´ 39& DQG LQFKHV PP IRU ´ PP
39&EH\RQGWKHRXWVLGHZDOO,QWDNHSLSLQJVKRXOGEH
DVVKRUWDVSRVVLEOH6HH)LJXUH
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)LJXUH
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PP DV VKRZQ LQ )LJXUH ([KDXVW DQG
LQWDNH SLSLQJ WKDW LV UXQ XS D ZDOO LV FRQVLGHUHG WR
EH LQ DQ XQFRQGLWLRQHG VSDFH VR SLSLQJ VKRXOG EH
VL]HGDFFRUGLQJWR7DEOH7KHLQWDNHSLSLQJPD\EH
HTXLSSHGZLWKDHOERZWXUQGRZQ8VLQJWXUQGRZQ
ZLOODGGIHHWPWRWKHHTXLYDOHQWOHQJWKRIWKH
SLSH
$PXOWLSOHIXUQDFHLQVWDOODWLRQPD\XVHDJURXSRIXSWR
IRXUWHUPLQDWLRQVDVVHPEOHGWRJHWKHUKRUL]RQWDOO\DV
VKRZQLQ)LJXUH
Figure 39.
Minimum
A
bove Average
Snow
Accumulation
SHEET METAL STRAP
(Clamp and sheet metal strap
must be field installed to support
the weight of the termination kit.)
FLASHING
(Not Furnished)
CLAMP
FIELD-PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT LARGER VENT
PIPE SIZE TO TERMINATION
1 1/2” (38mm) accelerator
provided on 71M80 & 44W92
12” (305mm)
INTAKE
AIR
EXHAUST
VENT
Figure 40. Direct Vent Concentric Rooftop
Termination
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
507270-03BPage 32 of 58 Issue 1904
12” (305mm) Min.
above grade or
average snow
accumulation.
INTAKE
AIR
INTAKE
AIR
INTAKE
AIR
OUTSIDE
WALL
GRADE
CLAMP
(Not Furnished)
FIELD-PROVIDED
REDUCER MAY BE REQUIRED
TO ADAPT LARGER VENT
PIPE SIZE TO TERMINATION
EXHAUST
VENT
1-1/2” (38mm) accelerator
provided on 71M80 & 44W92
kits for -45 and -70 units
EXHAUST
VENT
Figure 41. Direct Vent Concentric Wall Termination
71M80, 69M29 or 60L46 (US)
44W92 or 44W93 (Canada)
Figure 42.
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
NOTE'RQRWGLVFKDUJHH[KDXVWJDVHVGLUHFWO\LQWRDQ\FKLPQH\RU
YHQWVWDFN,IYHUWLFDOGLVFKDUJHWKURXJKDQH[LVWLQJXQXVHGFKLPQH\
RUVWDFNLVUHTXLUHGLQVHUWSLSLQJLQVLGHFKLPQH\XQWLOWKHSLSHRSHQ
HQG LV DERYH WRS RI FKLPQH\ DQG WHUPLQDWH DV LOOXVWUDWHG ,Q DQ\
H[WHULRUSRUWLRQRIFKLPQH\WKHH[KDXVWYHQWPXVWEHLQVXODWHG
Figure 43. Direct Vent Application Using Existing
Chimney
507270-03B Page 33 of 58Issue 1904
* 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
Figure 44.
507270-03B3DJHRI Issue 1904
'HWDLOVRI([KDXVW3LSLQJ7HUPLQDWLRQVIRU1RQ
Direct Vent Applications
([KDXVW SLSHV PD\ EH URXWHG HLWKHU KRUL]RQWDOO\ WKURXJK
DQ RXWVLGH ZDOO RU YHUWLFDOO\ WKURXJK WKH URRI ,Q DWWLF RU
FORVHW LQVWDOODWLRQV YHUWLFDO WHUPLQDWLRQ WKURXJK WKH URRI
LV SUHIHUUHG )LJXUH WKURXJK )LJXUH VKRZ W\SLFDO
WHUPLQDWLRQV
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VKRZQ7KHWHUPLQDWLRQSLSHPXVWEHVL]HGDVOLVWHG
LQ 7DEOH 7KH VSHFL¿HG SLSH VL]H HQVXUHV SURSHU
YHORFLW\ UHTXLUHG WR PRYH WKH H[KDXVW JDVHV DZD\
IURPWKHEXLOGLQJ
2Q ¿HOG VXSSOLHG WHUPLQDWLRQV IRU VLGH ZDOO H[LW
H[KDXVWSLSLQJPD\H[WHQGDPD[LPXPRILQFKHV
PPIRU´39&DQG´PPIRU´PP
39&EH\RQGWKHRXWVLGHZDOO6HH)LJXUH
,IH[KDXVWSLSLQJPXVWEHUXQXSDVLGHZDOOWRSRVLWLRQ
DERYHVQRZDFFXPXODWLRQRURWKHUREVWUXFWLRQVSLSLQJ
PXVWEHVXSSRUWHGHYHU\´PPDVVKRZQ LQ
)LJXUH :KHQ H[KDXVW SLSLQJ PXVW EH UXQ XS DQ
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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
Figure 47. 1RQ'LUHFW9HQW)LHOG6XSSOLHG:DOO
Termination Extermination
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).
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
NOTE'RQRWGLVFKDUJHH[KDXVWJDVHVGLUHFWO\LQWRDQ\FKLPQH\RU
YHQWVWDFN,IYHUWLFDOGLVFKDUJHWKURXJKDQH[LVWLQJXQXVHGFKLPQH\
RUVWDFNLVUHTXLUHGLQVHUWSLSLQJLQVLGHFKLPQH\XQWLOWKHSLSHRSHQ
HQG LV DERYH WRS RI FKLPQH\ DQG WHUPLQDWH DV LOOXVWUDWHG ,Q DQ\
H[WHULRUSRUWLRQRIFKLPQH\WKHH[KDXVWYHQWPXVWEHLQVXODWHG
Figure 48. 1RQ'LUHFW9HQW$SSOLFDWLRQ8VLQJ([LVWLQJ
Chimney
507270-03B Page 35 of 58Issue 1904
Exhaust through Crawl Space Vent Option
$OO´FRQGHQVLQJJDVIXUQDFHVDUHQRZDSSURYHG
WREHYHQWHGGRZQWKURXJKDFUDZOVSDFH(QVXUHDYHQW
SLSHGUDLQNLW:86$RU=&DQDGDLVXVHGDV
GLUHFWHGWKURXJKWKHÀRRUMRLVWVDQGLQWRWKHFUDZOVSDFH
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
NOTE: $OOKRUL]RQWDOUXQVRIH[KDXVWSLSHPXVWVORSHEDFNWRZDUGWKHNLWDPLQLPXPRI´PPIRUHDFK´PPWRHQVXUHGUDLQDJH
507270-03BPage 36 of 58 Issue 1904
Condensate Piping
7KLV XQLW LV GHVLJQHG IRU HLWKHU ULJKW RU OHIW VLGH H[LW RI
FRQGHQVDWH SLSLQJ LQ XSÀRZ DSSOLFDWLRQV ,Q KRUL]RQWDO
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ORFDWLRQV)LJXUHVKRZVWUDSDVVHPEO\XVLQJ´39&
RU´39&
Figure 52.
NOTE: ,IQHFHVVDU\WKHFRQGHQVDWHWUDSPD\EHLQVWDOOHG
XSWR¶DZD\IURPWKHIXUQDFH8VH39&SLSHWRFRQQHFW
WUDS WR IXUQDFH FRQGHQVDWH RXWOHW 3LSLQJ IURP IXUQDFH
PXVWVORSHGRZQDPLQLPXPRI´SHUIWWRZDUGWUDS
'HWHUPLQHZKLFKVLGHFRQGHQVDWHSLSLQJZLOOH[LWWKH
XQLWORFDWLRQRIWUDS¿HOGSURYLGHG¿WWLQJVDQGOHQJWK
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WKH FROG HQG KHDGHU ER[ DW WKH DSSURSULDWH ORFDWLRQ
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HOERZ¿WWLQJLQWRFROGHQGKHDGHUER[8VH7HÀRQWDSH
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RIWKHWUDS6HFXUHZLWKFODPS6HH)LJXUH
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)LJXUH5RXWHWKHFRQGHQVDWHOLQHWRDQRSHQGUDLQ
&RQGHQVDWHOLQHPXVWPDLQWDLQD´GRZQZDUGVORSH
IURPWKHIXUQDFHWRWKHGUDLQ
'RQRWXVHFRSSHUWXELQJRUH[LVWLQJFRSSHUFRQGHQVDWH
OLQHVIRUGUDLQOLQH
CAUTION
,QVWDOO¿HOGSURYLGHGYHQWRQWUDSDVVHPEO\DVVKRZQLQ
)LJXUHWKURXJK)LJXUH7UDSPXVWH[WHQGDWOHDVW
´DERYHWKHIXUQDFHFRQGHQVDWHGUDLQFRQQHFWLRQLQ
XSÀRZDSSOLFDWLRQVDQG´DERYHWKHERWWRPRIWKH
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,IXQLWZLOOEHVWDUWHGLPPHGLDWHO\XSRQFRPSOHWLRQRI
LQVWDOODWLRQSULPHWUDSSHUSURFHGXUHRXWOLQHGLQ8QLW
6WDUW8SVHFWLRQ
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WUDS WR GUDLQ ,I GUDLQ OHYHO LV DERYH FRQGHQVDWH WUDS
FRQGHQVDWH SXPS PXVW EH XVHG &RQGHQVDWH GUDLQ OLQH
VKRXOG EH URXWHG ZLWKLQ WKH FRQGLWLRQHG VSDFH WR DYRLG
IUHH]LQJ RI FRQGHQVDWH DQG EORFNDJH RI GUDLQ OLQH ,I
WKLVLV QRWSRVVLEOHDKHDWFDEOHNLWPD\EHXVHG RQWKH
FRQGHQVDWHWUDSDQGOLQH+HDWLQJFDEOHNLWLVDYDLODEOHLQ
YDULRXVOHQJWKVIWPNLWQR.IWP
NLWQR.DQGIWPNLWQR.
Figure 53. Condensate Trap Locations
8QLWVKRZQLQXSÀRZSRVLWLRQZLWKUHPRWHWUDS
:KHQ FRPELQLQJ WKH IXUQDFH DQG HYDSRUDWRU FRLO
GUDLQVWRJHWKHU WKH$& FRQGHQVDWH GUDLQRXWOHW PXVW
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SUHVVXUHVZLWFKWRRSHUDWHSURSHUO\
IMPORTANT
507270-03B Page 37 of 58Issue 1904
Figure 54. Evaporator Coil Using a Separate Drain
8QLWVKRZQLQKRUL]RQWDOULJKWKDQGGLVFKDUJHSRVLWLRQ
3LSLQJIURPIXUQDFHPXVWVORSHGRZQDPLQLPXPRI´SHUIWWRZDUGWUDS
Figure 55. Evaporator Coil Using a Separate Drain Figure 56. Evaporator Coil Using a Common Drain
3LSLQJIURPIXUQDFHPXVWVORSHGRZQDPLQLPXPRI´SHUIWWRZDUGWUDS
Figure 57. Evaporator Coil Using a Common Drain
8QLWVKRZQLQKRUL]RQWDOOHIWKDQGGLVFKDUJHSRVLWLRQ
507270-03BPage 38 of 58 Issue 1904
Figure 58. 7UDS'UDLQ$VVHPEO\8VLQJ´39&RU´39&
507270-03B Page 39 of 58Issue 1904
Figure 59. &RQGHQVDWH7UDSZLWK2SWLRQDO2YHUÀRZ
Switch
Gas Piping
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IMPORTANT
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Figure 60.
507270-03B3DJHRI Issue 1904
:KHQWHVWLQJSUHVVXUHRIJDVOLQHVJDVYDOYHPXVWEH
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SVLJN3D
IMPORTANT
FIRE OR EXPLOSION HAZARD
)DLOXUH WR IROORZ WKH VDIHW\ ZDUQLQJV H[DFWO\ FRXOG
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Figure 61. Gas Piping
8SÀRZ$SSOLFDWLRQV
Figure 62. Gas Piping
Horizontal Applications
507270-03B 3DJHRIIssue 1904
*DV3LSH&DSDFLW\)7ñ+5N/+5
Table 9.
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
507270-03B3DJHRI Issue 1904
Electrical
ELECTROSTATIC DISCHARGE (ESD)
Precautions and Procedures
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CAUTION
Figure 63.
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Accessory Terminals
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Figure 66.
507270-03B3DJHRI Issue 1904
Figure 67. Typical Wiring Diagram
507270-03B 3DJHRIIssue 1904
Figure 68. Integrated Control
(Automatic Hot Surface Ignition System)
Terminal Designations
+80 +XPLGL¿HU9$&
LINE ,QSXW9$&
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FOR YOUR SAFETY READ BEFORE OPERATING
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Placing the Furnace into Operation
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507270-03B3DJHRI Issue 1904
Priming Condensate Trap
7KH FRQGHQVDWH WUDS VKRXOG EH SULPHG ZLWK ZDWHU SULRU
WRVWDUWXSWRHQVXUH SURSHU FRQGHQVDWHGUDLQDJH(LWKHU
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WARNING
Gas Valve Operation
See Figure 69
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NOTE: :KHQ XQLW LV LQLWLDOO\ VWDUWHG VWHSV WKURXJK
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EHSHUIRUPHG
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507270-03B 3DJHRIIssue 1904
Gas Pressure Adjustment
Gas Flow (Approximate)
Table 10. 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
-135 27 68 136
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Supply Pressure Measurement
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Manifold Pressure Measurement
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High Altitude Information
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Table 12.
0DQLIROGDQG6XSSO\/LQH3UHVVXUHIW
Capacity Gas
Manifold Pressure in. w.g.
Supply Line Pressure
in. w.g.
IW
IW
ft.
ft.
ft.
10,000 ft.
$OO
1DWXUDO
/33URSDQH
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507270-03B3DJHRI Issue 1904
Table 13.
%XUQHU2UL¿FH&RQYHUVLRQ.LWVDW9DU\LQJ$OWLWXGHV
Capacity
IW
P
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P
1DWXUDOWR/3
Propane
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High Altitude
Natural Burner
2UL¿FH.LW
High Altitude
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2UL¿FH.LW
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BG921UH Pressure Switch Requirements at Varying Altitudes
Capacity
IW
P
IW
P
IW
P
1R&KDQJH
11J09 (replaced
by 11U65)
11J10
070
090
3UHVVXUHVZLWFKLVIDFWRU\VHW1RDGMXVWPHQWQHFHVVDU\$OOPRGHOVXVHWKHIDFWRU\LQVWDOOHGSUHVVXUH
VZLWFKIURPIHHWP
BG951UH Pressure Switch Requirements at Varying Altitudes
Capacity
IW
P
IW
P
IW
P
1R&KDQJH 1R&KDQJH 11J09
070 1R&KDQJH 11J12 10U93
090 1R&KDQJH 11J11 10U93
110 1R&KDQJH 11J12 10U93
135 1R&KDQJH 11J11 10U93
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507270-03B 3DJHRIIssue 1904
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507270-03BPage 50 of 58 Issue 1904
Other Unit Adjustments
Primary Limit
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DGMXVWPHQW
Flame Rollout Switches (Two)
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WKHEXUQHUER[7KHVHOLPLWVDUHIDFWRU\VHWDQGUHTXLUHQR
DGMXVWPHQW
Pressure Switch
7KHSUHVVXUHVZLWFKLVORFDWHGLQWKHKHDWLQJFRPSDUWPHQW
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Temperature Rise
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DLUWHPSHUDWXUHVKDYHEHHQDOORZHGWRVWDELOL]HFKHFNWKH
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Figure 70.
Thermostat Heat Anticipation
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Blower Speeds
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Electronic Ignition
7KHLQWHJUDWHGFRQWUROKDVDQDGGHGIHDWXUHRIDQLQWHUQDO
:DWFKJXDUG FRQWURO7KH IHDWXUHVHUYHV DV DQ DXWRPDWLF
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Exhaust and Air Intake Pipe
&KHFNH[KDXVWDQGDLULQWDNHFRQQHFWLRQVIRUWLJKWQHVV
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507270-03B Page 51 of 58Issue 1904
Blower Performance BG921UH
BG921UH045BP08 Performance (Less Filter)
External
Static
Pressure
in. w.c.
$LU9ROXPH:DWWVDW9DULRXV%ORZHU6SHHGV
High 0HGLXP+LJK 0HGLXP/RZ Low
cfm Watts cfm Watts cfm Watts cfm Watts
920 365 765 295 710 265
1135 900 360 765 290 690 255
1125 895 350 755 285 680 255
1090 870 725 280 660 250
1065 870 325 715 270 635
1020 390 825 315 675 260 605 235
365 780 300 250 555 225
910 350 295 585 505 220
790 325 670 275 510 225 205
735 310 575 255 220 390 195
BG921UH070BP12 Performance (Less Filter)
External
Static
Pressure
in. w.c.
$LU9ROXPH:DWWVDW9DULRXV%ORZHU6SHHGV
High 0HGLXP+LJK 0HGLXP/RZ Low
cfm Watts cfm Watts cfm Watts cfm Watts
1615 680 1355 570 1030
1565 660 1365 1150 1020 385
1535 630 525 1150 1025 375
600 1300 500 1110 1000 350
570 1255 1075 975
535 1200 380 330
1255 500 1125 995 355 875 310
1165 1080 395 935 335 820 290
1060 990 365 870 315 750 265
955 895 750 285 660
BG921UH090CP12 Performance (Less Filter)
External
Static
Pressure
in. w.c.
$LU9ROXPH:DWWVDW9DULRXV%ORZHU6SHHGV
High 0HGLXP+LJK 0HGLXP/RZ Low
cfm Watts cfm Watts cfm Watts cfm Watts
1620 620 1130 500 965
1610 720 1335 595 1135 975 395
1565 695 1335 565 970 385
1525 665 1300 555 1135 970 370
635 1295 520 1110 960 355
600 1260 1090
1365 570 1210 1035 390 900 330
1295 535 1155 995 365 860 305
1200 505 1065 930 270
1060 955 375 820 305 695 260
NOTE$OODLULVPHDVXUHGH[WHUQDOWRXQLWZLWKRXW¿OWHU¿OWHUQRWIXUQLVKHG¿HOGSURYLGHG
507270-03BPage 52 of 58 Issue 1904
BG921UH090CP16 Performance (Less Filter)
External
Static
Pressure
in. w.c.
$LU9ROXPH:DWWVDW9DULRXV%ORZHU6SHHGV
High 0HGLXP+LJK 0HGLXP/RZ Low
cfm Watts cfm Watts cfm Watts cfm Watts
2025 900 1690 780 1395 1200
1995 880 1705 760 1390 635 1205 525
1925 835 1675 715 605 1205 505
1850 795 680 580 1170
1790 760 1575 1395 560 1170
1700 725 625 1350 535
1610 690 580 1295 505 1100
1365 550 1225 1030
615 1265 510 1125 980 385
1270 565 1165 1060 900 350
NOTE$OODLULVPHDVXUHGH[WHUQDOWRXQLWZLWKRXW¿OWHU¿OWHUQRWIXUQLVKHG¿HOGSURYLGHG
507270-03B Page 53 of 58Issue 1904
Blower Performance BG951UH
BG951UH045BP08 Performance (Less Filter)
External
Static
Pressure
in. w.c.
$LU9ROXPH:DWWVDW9DULRXV%ORZHU6SHHGV
High 0HGLXP+LJK 0HGLXP/RZ Low
cfm Watts cfm Watts cfm Watts cfm Watts
920 365 765 295 710 265
1135 900 360 765 290 690 255
1125 895 350 755 285 680 255
1090 870 725 280 660 250
1065 870 325 715 270 635
1020 390 825 315 675 260 605 235
365 780 300 250 555 225
910 350 295 585 505 220
790 325 670 275 510 225 205
735 310 575 255 220 390 195
BG951UH070BP12 Performance (Less Filter)
External
Static
Pressure
in. w.c.
$LU9ROXPH:DWWVDW9DULRXV%ORZHU6SHHGV
High 0HGLXP+LJK 0HGLXP/RZ Low
cfm Watts cfm Watts cfm Watts cfm Watts
1585 685 585 1095 880 380
1560 665 1320 565 1085 885 375
1515 630 1300 1080 880 370
590 1275 520 1065 890 360
570 1235 1050 875 350
1195 1020 335
1275 510 975 365 830 315
1195 1090 930 355 780 290
1105 995 380 850 325 730 275
985 890 770 300 650 255
BG951UH090CP12 Performance (Less Filter)
External
Static
Pressure
in. w.c.
$LU9ROXPH:DWWVDW9DULRXV%ORZHU6SHHGV
High 0HGLXP+LJK 0HGLXP/RZ Low
cfm Watts cfm Watts cfm Watts cfm Watts
1630 715 590 1090 885 385
1615 700 1320 580 1070 890 380
1580 675 1305 570 1070 890 370
1525 620 1295 535 1060 890 360
615 1275 515 1055 885 350
565 1220 1030 860 330
1350 535 1175 1005 390 835 310
1260 505 1115 955 360 785 290
1190 1010 380 880 325 285
1060 930 360 795 295 655 250
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507270-03B3DJHRI Issue 1904
BG951UH090CP16 Performance (Less Filter)
External
Static
Pressure
in. w.c.
$LU9ROXPH:DWWVDW9DULRXV%ORZHU6SHHGV
High 0HGLXP+LJK 0HGLXP/RZ Low
cfm Watts cfm Watts cfm Watts cfm Watts
880 1895 780 1590 1350 550
2110 850 1880 760 1585 635 1360
2060 810 1835 725 1580 620 1360 520
1990 765 1805 690 1550 585 1365
1925 750 1755 655 1510 1330
1830 700 1680 610 525 1285
1720 1610 575 1390 1230
1600 615 1525 535 1300 1165 390
560 1195 1035 365
1300 515 1305 1100 390 900 320
BG951UH110CP20 Performance (Less Filter)
External
Static
Pressure
in. w.c.
$LU9ROXPH:DWWVDW9DULRXV%ORZHU6SHHGV
Bottom Return Air, Side Return Air with Optional Return Air Base,
Return Air from Both Sides or Return Air from Bottom and One Side.
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cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts cfm Watts
2370 1330 2230 1100 2000 910 1735 2360 1320 2260 1085 1965 905
2350 1295 2205 1085 1970 890 1730 735 2330 1285 2180 1070 1945 890 1715 735
2265 1280 2135 1070 1890 875 1730 720 2255 1250 2075 1045 1885 880 1695 725
2190 1230 2050 1785 850 1685 705 2150 1210 2060 1020 1880 855 710
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1935 1135 1770 930 780 1590 660 1920 1110 1785 910 1695 775 151
1805 1085 1720 895 750 1505 630 1780 1070 1710 885 1590 630
1730 1065 1590 855 720 610 1680 1570 1520 710 1350 610
1010 1520 705 595 1595 1010 830 695 1315 600
BG951UH135DP20 Performance (Less Filter)
External
Static
Pressure
in. w.c.
$LU9ROXPH:DWWVDW9DULRXV%ORZHU6SHHGV
Bottom Return Air, Side Return Air with Optional Return Air Base,
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2150 1970 1030 1750 855 1565 705 2170 1245 1965 1025 1685 835 705
2030 1200 1900 995 1710 830 1510 685 2065 1215 1905 995 1625 815 685
1950 1170 1795 955 800 670 1950 1175 1830 980 1530 785 1365 670
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507270-03B Page 55 of 58Issue 1904
Service
ELECTRICAL SHOCK, FIRE, OR EXPLOSION
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Planned Service
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