7
Figure 5.
XTherm 1005A-2005A Anchor Hole Locations
CAUTI
ON: This heater should be located in an area
where water leakage will not result in damage to the area
adjacent to the appliances or to the structure. When such
locations cannot be avoided, it is recommended that a
suitable catch pan, adequately drained, be installed under
the appliance. The pan must not restrict air flow.
In addition, the heater shall be installed such that the gas
ignition system components are protected from water
(dripping, spraying, rain, etc.) during appliance operation
or service (circulator replacement, control replacement,
etc.).
If the heater needs to be secured to the ground, use the
hole pattern shown in
Figure 5
, following local codes.
Additional clearance may be required when using the
factory anchor bracket.
3.3. Clearances
3.3.1. Indoor Installations
Heater Side
Minimum
Clearances from
Combustible
Surfaces
in. (mm)
Minimum Service
Clearance
in. (mm)
Floor *
0
0
Rear
12 (305)
36 (914)
Right Side
1 (25)
24 (610)
Left Side
1 (25)
1 (25)
Top
0
10 (254)
Front
Open
24 (610)
Vent
1 (25)
1 (25)
See also National Fuel Gas Code, Table 10.2.3,
Clearance Reduction
* DO NOT install on carpeting
Table C. Clearances - Indoor Installations
For ease of servicing, a clearance of at least 24" (610 mm)
on the right side, at least 24" (610 mm) in front and 36"
(914 mm) above the top of the heater is required. This will
allow the heater to be serviced in its installed location
without movement or removal of the heater.
Service clearances less than the minimum may require
removal of the heater to service either the heat exchanger
or the burner components. In either case, the heater must
be installed in a manner that will enable the heater to
be serviced without removing any structure around the
heater.
0.75"
(19 mm)
32.88"
(835 mm)
REAR OF UNIT
0.56"
(14 mm)
0.56"
(14 mm)
DIA. TYP.
1.125"
(29 mm)
48.50"
(1232 mm)
FRONT OF UNIT
F10245
3. INSTALLATION
3.1. Installation Codes
Installations must follow these codes:
• Local, state, provincial, and national codes, laws,
regulations and ordinances
• National Fuel Gas Code, ANSI Z223.1/NFPA 54 –
latest edition (NFGC)
• National Electrical Code, ANSI/NFPA 70 - latest
edition (NEC)
• Standard for Controls and Safety Devices for
Automatically Fired Heaters, ANSI/ASME CSD-1,
(CSD-1) when required
• For Canada only: CAN/CSA B149 Natural Gas and
Propane Installation Code and CSA C22.1 C.E.C. Part
1 (C22.1)
3.2. Equipment Base
The heater should be mounted on a level, structurally
sound housekeeping pad. The heater is approved for
installation on a combustible surface but must NEVER be
installed on carpeting. Gas-fueled equipment installed in
enclosed parking garages must be located at least 18"
(457 mm) above the floor.
