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CHAPTER II
HEATER INSTALLATION
1. GENERAL INSTALLATION INFORMATION
AND REQUIREMENTS
CLEARANCES
•
The required minimum clearances to combustible
surfaces are illustrated in Figure 2 and Table 3.
As shown on Figure 2, the front of the heater is
installed at the minimum required clearance to
combustible surfaces and toward open space,
and then the other sides must have a minimum
clearance of 16 inches to combustible surfaces.
EXHAUST
VENT
16"
MINIMUM
14-1/2"
Figure 2. Installation Clearances to Combustible Surfaces
Table 3. Installation, Ventilation and Mounting Information
BTU/HR. RATING
MODEL
GAS
NO.
NAT.
L.P.
MH25NG
25,000 —
MH25LP
—
22,000
CEILING
14"
MINIMUM
WORKSHOP DOOR
30
16"
MINIMUM
HEATER
WALL BRACK-
ET
48"
MINIMUM
NORMAL
MOUNTING
POSITION
30
o
30
o
The clearances to combustibles represent a surface
temperature of 90°F (32°C) above room temperature.
Building materials with low heat tolerance may be
subject to degradation at lower temperatures. It is the
installer's responsibility.
OPEN
NOTE:
1.
ONLY FLUE SIDE OF HEATER CAN
BE ELEVATED (30
2.
HEATER SIDE REFLECTOR MUST
BE HORIZONTAL.
FLOOR LINE
CLEARANCES TO COMBUSTIBLE SURFACES
TOP
SIDES
14"
16"
14"
16"
Installation instructions and Owner's Manual
E5
).
o
BACK
BELOW
16"
48"
16"
48"
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