12
4 - LOCATING BOILER
4.1 Boiler Location Considerations
Installation shall conform to requirements of
authority having jurisdiction or in absence of
such requirements:
National Fuel Gas Code, ANSI Z223.1/NFPA 54
.
National Electrical Code, NFPA 70.
• Ambient room temperature always above 32°F (0°C) to
prevent freezing of liquid condensate.
• Approved for installation in closets or alcove provided
it is correctly designed for that purpose and minimum
clearances are met.
• Protect gas ignition system components from water
(dripping, spraying, rain, etc.) during operation and
service (circulator replacement, condensate trap,
control replacement, etc.).
• Access to outdoors to meet minimum and maximum
pipe lengths for combustion air and vent piping. See
section 6.
• Disposal of condensate. See section 6.
• Drainage of water (or water - antifreeze solution)
during boiler service or from safety relief valve
discharge. See section 5.
• Access to system water piping, gas supply, and
electrical service. See sections 5, 7 and 8
.
• Clearances to combustible materials and service
clearances.
See Table 1 and Figures pg. 13.
•
Boiler shall be installed on flat vertical wall which is
capable of supporting the weight of the boiler.
• Boiler installed in a room containing bath or shower
shall be installed so person using bath or shower
cannot touch any electrical switch or boiler control
utilizing line voltage electricity.
• Multiple Boilers can be wall mounted, placed side
by side, or back to back, (common venting is not
permitted).
• Consider service clearances in all installations.
• For Direct Vent installations, air vents are not required
in room boiler is installed in, or when installed in closet
or compartment (direct vent is required).
TABLE 1: BOILER CLEARANCES
Dimension
Combustible
Materials
(1)
Manufacturer
Recommended
for Service
(1)(2)
Top (A)
0" (0 cm)
8-5/8" (2160 mm)
Left Side (B)
1-3/4" (45 mm)
1-3/4" (45 mm)
Right Side (C)
1-3/4" (45 mm)
1-3/4" (45 mm)
Front (D)
1-9/16" (40 mm)
17-3/4"(450mm)
Back (E)
0" (0 cm)
0" (0 cm)
Bottom (F)
0" (0 cm)
*9-13/16"
(250 mm)
Combustion Air/
Vent piping
0" (0 cm)
6" (160 mm)
(1)
Required distances measured from boiler jacket.
(2)
Service, proper operation clearance recommendation.
* Allowance for piping at the bottom of boiler not included.
WARNING
Fire Hazard! Do not install on carpeting. Failure to
follow these instructions could result in death or
serious injury.
!
NOTE: Greater clearances for access should supersede fire
protection clearances.
PN 240012363 REV. A [08/31/2018]
