Operating instructions

PRODUCT DESIGN
48
If the combustion air intake pipe is to be installed above a
finished ceiling or other area where dripping of condensate
will be objectionable, insulation of the combustion air pipe
may be required. Use 1/2” thick closed cell foam insulation
such as Armaflex or Insultube where required.
AMH9, GMH9, AMS95, GMS95
Pipe
Size
(4)
(in.)
2345678
Standard
2 68656259565350
Alternate 2 55 52 49 46 43 40 37
Standard
2 68656259565350
Alternate 2 55 52 49 46 43 40 37
Standard
24643
40
Alternate 2 33 30 27
Standard
3 68656259565350
Alternate 3 55 52 49 46 43 40 37
Standard
3 68656259565350
Alternate 3 55 52 49 46 43 40 37
Standard
3 68656259565350
Alternate 3 55 52 49 46 43 40 37
Not Rec ommended
115_5
Direct Vent (Dual Pipe)
Maximum Allow able Length of Vent/Flue & Combustion
Air Intake Pipe (ft)
Unit Input
(Btu)
Number of Elbow s
(1)(2 )(3)(5 )
090_4
Vent/Flue/Air Intake
Termination
045_3
070_3
070_4
090_5
1) Minimum requirement for each vent pipe is five (5) feet in length and
one elbow/tee.
2) Tees and/or elbows used in the vent/flue termination must be in-
cluded when determining the number of elbows in the piping sys-
tem.
3) 3” diameter pipe can be used in place of 2” diameter pipe.
4) Increased Clearance Configurations using (2) 45 deg. Long Sweep
elbows should be considered equivalent to one 90 deg. elbow.
GKS9
Pipe
Size
(4)
(in.)
2345678
Standard 2 68656259565350
Alternate 2 55 52 49 46 43 40 37
Standard 2 36333027242118
Alternate 2 23 20 17 14 11 8 5
Standard 3 68656259565350
Alternate 3 55 52 49 46 43 40 37
Standard 2 55524946434037
Alternate 2 42 39 36 33 30 27 24
Standard 2 37343128252219
Alternate 2 24 21 18 15 12 9 6
Standard 3 68656259565350
Alternate 3 55 52 49 46 43 40 37
Standard 2 39363330272421
Alternate 2 26 23 20 17 14 11 8
Standard 3 68656259565350
Alternate 3 55 52 49 46 43 40 37
Standard 3 68656259565350
Alternate 3 55 52 49 46 43 40 37
Direct Vent (Dual Pipe)
Maximum Allowable Length of Vent/Flue & Combustion
Air Intake Pipe (ft)
Unit Input
(Btu)
Number of Elbows
(1)(2)(3)(5)
115_5
Vent/Flue/Air Intake
Termination
045_3
090_4
070_3
070_4
090_5
1) Elbows and/or tees used in terminations must be included when
determining quantity of allowable elbows in the system.
2) Number of elbows tabulated are for each (Vent/Flue & Combustion
Air Intake) pipe.
3) Minimum requirements for each Vent/Flue & Combustion Air Intake
pipe is five (5) feet in length and one elbow/tee.
4) 3” diameter pipe can be used in place of 2” diameter pipe.
5) Increased Clearance Configurations using (2) 45 deg. Long Sweep
elbows should be considered equivalent to one 90 deg. elbow.
ACV9, AMV9, GCV9, GMV9, GMV95
12345678
Standard 2 71 68 65 62 59 56 53 50
Alternate 2 58 55 52 49 46 43 40 37
2 4946434037343128
3 7168656259565350
2 3633302724211815
3 5754514845423936
Standard 3 71 68 65 62 59 56 53 50
Alternate 3 57 54 51 48 45 42 39 36
Standard 3 49 46 43 40 37 34 31 28
Alternate 3 35 32 29 26 23 20 17 14
12345678
2 4946434037343128
3 7168656259565350
2 3633302724211815
3 5754514845423936
2 6158555249464340
3 7168656259565350
2 4845423936333027
3 5754514845423936
90,000
Standard
Alternate
70,000
Standard
Alternate
COUNTERFLOW
Direct Vent (Dual Pipe)
Maximum Allow able Length
of Vent/Flue & Combustion Air Intake Pipe (ft)
Unit Input
(Btu)
Termination
Style
Pi p e
(4)
(inch)
Number of Elbow s
(1)(2)(3)(5)
45,000
90,000
115,000
Termination
Style
70,000
Standard
Alternate
UPFLOW
Direct Vent (Dual Pipe)
Maximum Allow able Length
of Vent/Flue & Combustion Air Intake Pipe (ft)
Number of Elbow s
(1)(2)(3)(5)
Pi p e
(4)
(inch)
Unit Input
(Btu)
1) Elbows and/or tees used in terminations must be included when
determining quantity of allowable elbows in the system.
2) Number of elbows tabulated are for each (Vent/Flue & Combustion
Air Intake) pipe.
3) Minimum requirements for each Vent/Flue & Combustion Air Intake
pipe is five (5) feet in length and one elbow/tee.
4) 3” diameter pipe can be used in place of 2” diameter pipe.
5) Increased Clearance Configurations using (2) 45 deg. Long Sweep
elbows should be considered equivalent to one 90 deg. elbow.
Vent/Flue and Combustion Air Pipe Terminations
VENT/FLUE AND COMBUSTION AIR PIPE TERMINATIONS
The vent/flue and combustion air pipes may terminate verti-
cally, as through a roof, or horizontally, as through an out-
side wall.