Raypak Hi Delta 302A-902A Installation And Operating Instructions Manual

9INSTALLATIONINSTALLATIONInstallation CodesInstallations 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 - latestedition (NEC)• Standard for Controls and Safety Devices forAutomatically Fired Boilers, ANSI/ASME CSD-1,when required (CSD-1)• For Canada only: CAN/CGA B149.1 installationCode (B149.1) and CSA C22.1 C.E.C. Part 1(C22.1)The temperature of the water in the heater can be reg-ulated by using the temperature controller. To complywith safety regulations, the temperature controller isset at the lowest setting when shipped from the facto-ry.To adjust the water temperature, insert a small straightscrewdriver into the adjustment screw on the front oftemperature controller and turn the wheel to thedesired setting (See Fig. 4.).CAUTION: Hotter water increases the risk of scald-ing! There is a hot water scald potential if the thermo-stat is set too high.Fig. 4: Temperature ControllerEquipment BaseThe heater should be mounted on a level, structurallysound surface. The heater is approved for installationon a combustible surface but must NEVER beinstalled on carpeting. Gas-fueled equipment installedin enclosed parking garages must be located at least18 in. above the floor.StackingHi Delta units can be stacked two units high with anoptional stacking rack. A seismic-certified stacking kitis available from Raypak for this type of installation.CAUTION: The heaters should be located in anarea where water leakage will not result in damageto 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 notrestrict air flow.Fig. 5: Typical Stacked Installation