Rheem Solaraide HE Use and Care Manual - Page 4

Installation To Electrical Distribution Panel Temperature & Pressure Relief Valve To Cold Water Anode Hot Water Outlet Union Supply Heat Trap 6" Min to Fixtures Union R E L VAL I EF V E COLD HOT Shut-Off Valve Thermal Heat Trap 6" Min Expansion Tank (if required) Electrical Junction Box (Use Copper Conductors Only) Collector Return Line Connection * Jacket Access Panel Relief Valve Discharge Line to Suitable Open Drain. Solar Sensor Access Cover * Drain Valve Air Gap 6" Auxiliary Catch Pan To Solar Collector System * These connections are for non-potable heat transfer fluid loop. Do not make potable water connections to these fittings. Do not introduce non-potable heat transfer fluids into any other tank fitting Figure 2.-Typical Installation ! WARNING Many heat transfer fluids are classified as toxic. Do not introduce heat transfer fluids into any fitting on the heater except those clearly marked for that purpose. 3. HEAT EXCHANGER LOOP & SOLAR CONNECTIONS - This heater contains a wrap-around, vented, double wall heat exchanger that provides positive leak detection. Passageways for the heat transfer fluid are of copper and brass - to prevent dissimilar-metals corrosion, use only copper panels, piping, and fittings in the heat exchanger loop. Flow rates through the heat exchanger should be less than 3 gpm to limit the effects of corrosion. Any of the commonly accepted solar heat transfer fluids may be used in the exchanger, provided they contain appropriate corrosion inhibitors for copper systems. Anti-freeze fluids will turn acidic when exposed to prolonged high temperatures, causing corrosion damage in solar systems. A regular maintenance schedule must be established to monitor and maintain the proper pH level of the heat transfer fluid in the system to protect the heat exchanger and other metallic parts. A 1/2" npt fitting is provided on the tank surface (beneath the plastic snap cap on lower front of jacket) for installation of a solar control sensor. The solar control should incorporate a recycling shut-off switch that limits the temperature of the stored water to 180oF. Also , a mixing valve should be provided to limit water temperature at fixtures to 140oF. 4. POTABLE WATER SUPPLY CONNECTIONS - With the exception of the drain valve, all potable water connections are located on top of the water heater. Refer to Fig. 2 for suggested typical installation. The installation of unions or flexible copper connectors is recommended on the hot and cold water connections so that the water heater may be easily disconnected for servicing if necessary. The HOT and COLD water connections are clearly marked and are 3/4" NPT on all models. Install a shut-off valve in the cold water line near the water heater. ! CAUTION Do not introduce heat transfer fluids into any potable water connection. IMPORTANT!! Do not apply heat to the hot or cold water connections. If sweat connections are used, sweat tubing to adapter before fitting adapter to hot or cold water connections on heater. Any heat applied to the hot or cold water supply fittings will permanently damage them. 5. RELIEF VALVE - A new combination temperature and pressure relief valve, complying with the Standard for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems, ANSI Z21.22, must be installed in the opening provided and marked for the purpose on the water heater. (Refer to Fig. 2.) No valve of any type should be installed between the relief valve and the tank. Local codes shall govern the installation of relief valves. The pressure rating of the relief valve must not exceed 150 PSI, the maximum working pressure of the water heater as marked on the rating plate. The BTUH Rating of the relief valve must not be less than the input rating of the water heater as indicated on the rating label located on front of the heater (1 watt = 3.412 BTUH). Ground Screw (See Text) Junction Box WARNING When making connections to the heat exchanger, do not use standard pipe dope. Use teflon tape, teflon joint compound or fuorosilicone rubber sealant to prevent anti-freeze leaks. Do not apply heat to heat exchanger fittings when making sweat connections. Sweat tubing to adapter before fitting to solar connections. To protect the tank and heat exchanger from damage, the solar loop must contain a pressure relief valve, and a check valve to prevent thermosyphoning. Conduit Connector Wire Connectors Figure 3. - Water Heater Junction Box. 4