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.
CHAPTER II
HEATER INSTALLATION
1.GENERAL INSTALLATION INFORMATION AND REQUIREMENTS
WARNING: Maintain clearances as shown in Figure 2 or on heater nameplate.
•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 CEILING
VENT
16”14”
MINIMUMMINIMUM
OPEN
WORKSHOP DOOR
30
16”
MINIMUM
HEATER
WALL
48”
MINIMUMNOTE:
1. ONLY FLUE SIDE OF HEATER CAN BE ELEVATED (30o).
2. HEATER SIDE REFLECTOR MUST BE HORIZONTAL.
FLOOR LINE
Figure 2. Installation Clearances to Combustible Surfaces
Table 3. Installation, Ventilation and Mounting Information
| BTU/HR. RATING | NORMAL |
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MODEL | GAS | MOUNTING | CLEARANCES TO COMBUSTIBLE SURFACES | ||||
NO. | NAT. | L.P. | POSITION | TOP | SIDES | BACK | BELOW |
MH/HS25NG | 25,000 | — | 30o | 14" | 16" | 16" | 48" |
MH/HS25LP | — | 22,000 | 30o | 14" | 16" | 16" | 48" |
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Model # MH25NG/LP | HS25NG/LP | 5 | Installation instructions and Owner’s Manual | ||||
