Raypak 302A-902A manual Equipment Base, Stacking, Installation Codes

The temperature of the water in the heater can be reg- ulated by using the temperature controller. To comply with safety regulations, the temperature controller is set at the lowest setting when shipped from the facto- ry.

To adjust the water temperature, insert a small straight screwdriver into the adjustment screw on the front of temperature controller and turn the wheel to the desired setting (See Fig. 4.).

Fig. 4: Temperature Controller

INSTALLATIONCAUTION: Hotter water increases the risk of scald- ing! There is a hot water scald potential if the thermo-

stat is set too high.

INSTALLATION

Equipment Base

The heater should be mounted on a level, structurally sound surface. The heater is approved for installation on a combustible surface but must NEVER be installed on carpeting. Gas-fueled equipment installed in enclosed parking garages must be located at least 18 in. above the floor.

Stacking

Hi Delta units can be stacked two units high with an optional stacking rack. A seismic-certified stacking kit is available from Raypak for this type of installation.

CAUTION: The heaters should be located in an area where water leakage will not result in damage to the area adjacent to the appliances or to the struc- ture.

When such locations cannot be avoided, it is recom- mended that a suitable catch pan, adequately drained, be installed under the appliance. The pan must not restrict air flow.

Installation Codes

Installations must follow these codes:

• Local, state, provincial, and national codes, laws, regulations and ordinances

• National Fuel Gas Code, ANSI Z223.1/NFPA 54 – latest edition (NFGC)

• National Electrical Code, ANSI/NFPA 70 - latest edition (NEC)

• Standard for Controls and Safety Devices for
Automatically Fired Boilers, ANSI/ASME CSD-1,
when required (CSD-1)
• For Canada only: CAN/CGA B149.1 installation
Code (B149.1) and CSA C22.1 C.E.C. Part 1
(C22.1)	Fig. 5: Typical Stacked Installation

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