Raypak 0090A, 0195A, 0135A Installation, Code Requirements, Mounting Base, Clearances

INSTALLATION

Code Requirements

Installation must be in accordance with local codes, or, in the absence of local codes, with the latest editions of the National Fuel Gas Code, ANSI Z223.1,/NFPA 54, and the National Electrical Code, ANSI/NFPA 70. In Canada installations must conform with the current CAN/CSA B149 and the Canadian Electrical Code Part 1 CSA C22.2 No.1.

Where required by the authority having jurisdiction, the installation must conform to American Society of Mechanical Engineers Safety Code for Controls and Safety Devices for Automatically Fired Heaters, CSD- 1.

Mounting Base

This heater should be mounted on a level, non-com- bustible surface. Heater must not be installed on carpeting. This heater can be installed on a com- bustible surface only when the appropriate listed floor shield base is provided. An optional listed floor shield base is available for factory installation with the heater on all indoor models.

NOTE: The heater should be located in an area where water leakage will not result in damage to the area adjacent to the appliance or to the structure. When such locations cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed under the appliance. The pan must not restrict air flow.

In addition, the heater shall be installed such that the gas ignition system components are protected from water (dripping, spraying, rain, etc.) during appliance operation and service (circulator replacement, control replacement, etc.).

Fig. 3: Do Not Install on Carpeting

Clearances

	Minimum Distance
Heater Side	from Combustible
	Surfaces
Floor	Combustible*
Front	Alcove**
Back	6 in.
Right	6 in.
Left	6 in.
Top (Indoor)	16 in.
Top (Outdoor)	Unobstructed
Flue Vent	6 in.

*Except for carpeted flooring, heaters are certified for installation on combustible floors, when equipped with listed floor shield base. **A front clearance of at least 24 in. is recommended for adequate service of burner-tray and controls.

For uninsulated hot water pipes, maintain a 2 inch clearance, or con- sult the local authority having jurisdiction.

Table C: Minimum Clearances from Combustible

Surfaces

Combustion & Ventilation Air

(Indoor models only)

WARNING: Air supply to the heater room must not be affected by mechanical exhaust vents located in other parts of the house, such as kitchen or bathroom fans, or attic blowers. Mechanical exhaust vents may create a negative pressure condition in the heater room that can become a hazard of asphyxiation, explosion or fire.

CAUTION: Combustion air must not be contaminated by corrosive chemical fumes which can damage the heater. Measures must be taken to prevent the entry of corrosive chemical fumes to the combustion and ventilation air supply. Such chemicals include, but are not limited to, chlorinated and/or fluorinated hydrocarbons such as found in refrigerants, aerosol propellants, dry-cleaning fluids, degreasers, and paint removers. Other harmful elements may come from bleaches, air fresheners, or mastics. Vapors from these types of products can form corrosive acid compounds when burned in a gas flame. The resulting acid condensate can damage or substantially reduce the life of the heater. It may be necessary to provide outside air directly to the heater in order to avoid this problem.

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