Heater Installation - Mr. Heater GAS FIRED INFRA-RED WORKSHOP HEATER MH25LP / MH25NG Operation And Owner's Manual

Provide adequate clearance to combustibles per Table 3 at
control end of heater for servicing and minimum on top and
sides for ventilation and combustion air supply.
A minimum clearance of 8' above floor for public garages in
accordance with NFPA No. 88 most recent edition, or
Figure 1; whichever is larger.
Canadian installations in public garages must comply with
CGA 149B.1.9 most recent edition.
WARNING: Maintain clearances as shown in Figure 2
or on heater nameplate.
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.
MH/HS25NG 25,000 —
MH/HS25LP — 22,000
Model # MH25NG/LP
CEILING
14"
MINIMUM
WORKSHOP DOOR
30
16"
MINIMUM
HEATER
WALL
BRACKET
48"
MINIMUM
NORMAL
MOUNTING
POSITION
30
o
30
o
HS25NG/LP
CHAPTER II

HEATER INSTALLATION

1. GENERAL INSTALLATION INFORMATION
AND REQUIREMENTS
• 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.
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"
5
Installation instructions and Owner's Manual
).
o
BACK BELOW
16" 48"
16" 48"