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NOTICE: When starting the heater for the swimming season with a water temperature below 50°F (10°C), the heater may be used to heat the water; however, make sure that the heater operates continuously until the water temperature reaches the heater’s minimum setting of 65°F (18°C). DO NOT operate this unit outdoors at temperatures below 40°F (4°C). During cold weather, if there is no danger of freezing, operate the filter pump continuously even if the heater is not operating. If air temperatures are expected to drop below freezing (32°F/0°C), shut down the heater and winterize it (See ”WINTERIZING”, Page 8). Allowing the heater to freeze will void the warranty. MAINTAINING POOL TEMPERATURE To maintain pool temperature, make sure that the heater switch and valving are reset to pool settings after using the spa. ENERGY SAVING TIPS 1. Keep the pool or spa covered when not in use. This will reduce heating costs, reduce water evaporation, con7 CARE AND MAINTENANCE MAINTENANCE INSTRUCTIONS Risk of fire or explosion from flammable vapors. Do not store gasoline, cleaning fluids, varnishes, paints, or other volatile flammable liquids near heater or in the same room with heater. The following maintenance is recommended every six months and at the start of every swimming season: 1. Inspect the jacket and venting system to make sure that there are no obstructions to the flow of ventilating air or burner exhaust. Check that room air intakes are open and clear of obstructions. 2. Keep the area in and around the heater clear and free from combustible materials, gasoline and other flammable vapors and corrosive liquids. 3. Test the operation of the pressure relief valve by lifting the valve lever. 4. Test for proper operation of the pressure switch. (See “SWITCH SETTINGS” for testing instructions). 5. On enclosed installations with high-temperature Special Gas Vent systems, repeat the Final Installation Check, Page 15. Check for evidence of joint leakage. Make sure that joints have not slipped partially or completely apart. Check pipe and fittings for cracks or breaks. The combustion air blower is permanently lubricated, and does not require periodic lubrication. The burner does not require maintenance or adjustment by the user. Call a qualified service technician if you suspect that the burner may require maintenance. WINTERIZING (See Figure 7) For outdoor heaters in freezing climates, shut the heater down and drain it for winter as follows: 1. Turn off electrical supply to the heater and pump. 2. Close main gas control valve and manual gas valve (located outside the heater). 3. Open drain cock located on the bottom of the manifold adapter, and drain the heat exchanger and manifold adapter completely. If heater is below pool water level, be sure to close isolation valves to prevent draining the pool (isolation valves are not required and should not be used on heaters installed above pool water level). Assist the draining by blowing out the heat exchanger through the pressure switch fitting with low pressure compressed air (less than 5 PSI or 35 kPa). Explosion hazard. Purging the system with compressed air can cause components to explode, with risk of severe injury or death to anyone nearby. Use only a low pressure (below 5 PSI or 35 kPa), high volume blower when air purging the heater, pump, filter, or piping. 4. Remove the Water Pressure Switch. Plug the port in the manifold to prevent bugs and dirt from getting into the manifold. 5. Drain the plastic inlet/outlet manifold through the outlet pipe. If the pipe does not drain naturally to the pool, install a drain cock in the outlet pipe to drain the manifold. 6. Cover air inlet grate with a plastic bag to prevent bugs, leaves, etc., from getting into the heater. NOTICE: Water trapped in the heater can cause freeze damage. Allowing the heater to freeze voids the warranty. To return the heater to service after winterizing: 1. Close drain cock and fittings. 2. Before starting the heater, circulate water through the heater for several minutes until all air noises stop. See also “BEFORE STARTUP” (Page 4) and “CARE AND MAINTENANCE” (above). 8 PRESS TAB VENT PILOT OFFOFF ONON Open Manual/Gas Valve OFF Power Combination Gas Control Valve OFF Close Isolation Valves Turn Clockwise and press down to turn off gas. Drain Cock(s) and Plugs OPEN 2704 1196 PRESS TAB VENT PILOT OFFOFFONON Remove Water Pressure Switch to help Manifold Drain Outlet Inlet Drain Inlet/Outlet Manifold FIGURE 7: Winterizing HEATER CLEARANCES – OUTDOOR INSTALLATION INSTRUCTIONS The heater must be installed with the top of the vent at Risk of fire, explosion, or asphyxiation if Outdoor installations must have at least 3' (1 M) of clearance above vent. 3' (1M) or more Space around unit must be open on three sides when under roof or overhang. leave 6 in. (15 cm) of clear space between unit and combustible surfaces TOP VIEW 6" (15 cm) FIGURE 8: Combustible clearances 9 CONTROL PANEL INDEXING The exhaust discharges ve...

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