Operating instructions

25
1"(2.54cm)
Maximum
Combustion
Air
Vent
FIGURE 6-4 Side Wall Concentric Terminal FIGURE 6-5 Side Wall Concentric Terminal Multiple
Appliances
1" (25.4mm)
Maximum
Maintain 12"
clearance above
highest anticipated
snow level or grade
* See Note
Below
Vent
Combustion
Air
1" (25mm)
Maximum
Roof
Overhang
36"(0.9m(457mm)
(28m)) Minimum
Maintain 12"(30cm) US
(18"(46cm) Canada)
Clearance Above
Highest Anticipated
Snow Level Or Grade
12" (305mm) Minimum
*Must be less than 4" (102mm) or greater than 24"
(610mm) Horizontal distance between end bells of each air
intake to prevent ue gas recirculation.
FIGURE 6-6 Concentric Terminal Connection
Note: Securing strap must
be eld installed to prevent
movement of termination
kit in side wall
Vent
Combustion Air
1"(25.4mm)
Maximum
**See
Note
*2 or 3" (51 or 77 mm) Diameter
PVC intake/combustion air
Combustion Air
*2" ( 51mm) Diameter = 41" Length (1.1m)
3" (77mm) Diameter = 47" Length (1.2m)
** Note Overall length may be modied by cutting or extending
both combustion air and vent pipes. 12" (305mm) is minimum
allowable length and 60" (1.2m) is maximum allowable length for
this dimension.
SDR-26 PVC (D2241) only may be used for extending pipes.
Do not use Schedule 40 PVC or use couplings to extend pipes.
Dimension will change if intake/vent pipes are lengthened or
shortened.
OD 3½" ( 89mm) - *2" ( 51mm) kit
OD 4½" (114mm) - 3" (77mm) kit
* Note: 2" (51mm) For use with models 050/075/100.
3" (77mm) For use with models 075/100/150/200/299
4" (101mm) For use with model 299
6 - COMBUSTION AIR AND VENT PIPING