SECTION 3: CRITICAL CONSIDERATIONS
SECTION 3: CRITICAL CONSIDERATIONS 3.1 Basic Information
UHA(S) heaters have automatic ignition burners for ON/OFF operation only.
3.2Location and Suspension All models:
• Must be installed indoors.
•Must be installed in a level position with horizontal discharge.
•May be mounted on a shelf of
•May be suspended from above (See Page 6, Figure 2) or from wall brackets of sufficient strength to support the heater as listed in the Dimension Data Table on Page 37, Section 15.1. Drop rods must be a minimum of 3/8" diameter mild steel. Four suspension points (3/8" nuts) are located on top of the heater.
•Must be installed in a manner which allows access to all serviceable components. See Page 4, Figure 1 for details.
3.3 Minimum Required Installation Clearances
Clearances around the heater and vent must be as indicated on Page 4, Figure 1; Page 9, Figure 3 through Page 12, Figure 8 to ensure access for servicing, and correct operation.
3.4 Clearances to Combustibles
Clearances must be as indicated on Page 4, Figure 1. If clearances to combustibles are not indicated, then installation clearances apply.
3.5 Ventilation
It is important to ensure that there is adequate air space around the heater to supply air for combustion, ventilation and distribution in accordance with local and national codes.
3.6 Gas Supply
It is important that the gas supply pipe is sized correctly to provide the inlet pressure as stated on the heater data plate. The gas supply pipe and electrical connections must not support any of the heater's weight.
3.7 Electrical Supply
A permanent 120 V 60 Hz 1 Ø electrical supply is required for the main electrical power. The heater also requires suitable controls in accordance with Section 9.
3.8 Vent
Choose heater orientation to allow for the proper location of the vent. Each heater must be fitted with a correctly sized sealed vent system.
If vented horizontally, no other appliance may be connected to the vent. See Page 7, Section 6.
3.9 Separated Combustion Installation
For separated combustion installation, the vent and air intake must be fitted with an individual and correctly sized sealed system and the vent and air intake must terminate at approved wall and roof terminals.
Separated combustion units may not be common vented. See Page 7, Section 6.
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