INDOOR HEATER
The design is also certified for indoor installation when equipped with the approved draft hood. Locate heater as close as practical to a chimney or gas vent. Heater must always be vented to the outside. See Vent Piping Section for venting details. Minimum allowable space is shown on the nameplate.
COMBUSTION AIR (Indoor Units Only) Air For Combustion And Ventilation (Indoor Units Only)
The heater must have both combustion and ventila- tion air. Minimum requirements for net free air supply openings, one 12 inches from ceiling for ventilation and one 12 inches from the floor for combustion air as outlined ANSI Z223.1 and any local codes that may have jurisdic- tion.
CAUTION: Combustion air must not be contaminated by corrosive chemical fumes which can damage the heater and void the warranty.
STEP #2
Tighten the (4) screws (Shown below) until they come in contact with the unit jacket top, then evenly tighten all (4) screws to secure to unit.
Fig. #8233
VENT TERMINAL (Indoor)
Locate and assemble as shown below. Secure with screws supplied in envelope in carton.
a.All air from inside the building:
Each opening shall have a minimum net free square inches as noted:
Model Square Inches Model Square Inches
514 | 512 | 724 | 726 |
624 | 627 | 824 | 825 |
b.All air from outdoors:
When air is supplied directly from outside of build- ing, each opening shall valve a minimum net free square inches as noted:
Model Square Inches
514 128
624 157
724 182
824 207
VENTING CONNECTIONS
VENT TERMINAL (Outdoor) STEP #1
Lower outdoor “Stackless” top on to unit. Position top so it is centered on unit from side to side and front to rear.
Fig. # 8166
Fig. #8167
VENT PIPING
WARNING: Indoor heaters require a draft hood that must be connected to a vent pipe and properly vented to the outside. Failure to follow this procedure can cause fire or fatal carbon monoxide poisoning.
Vent piping the same size or large than the draft hood outlet is recommended, however, when the total vent height is at least ten (10) feet (draft hood relief opening to vent terminal), the vent pipe size may be reduced as specified in Chapter 10 of the latest edition of the National Fuel Gas Code, ANSI Z 223.1.
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