Rheem Above Ground Heaters 156- Installation Manual

6 Spa Return to Spa Fig. 1: Spa/Chlorinator Setup SAFETY This appliance is to be installed and operated by trained personnel in accordance with this Installation and Operation Manual. Be sure to read and under- stand the entire Installation and Operation Manual before attempting to install or operat...

7 WARNING: Use of any parts not manufactured and/or approved by the manufacturer may cause non-warrantable damage. Ambient Temperature Rating of Components • Analog heater -40°F to +175°F (-40°C to 79.4°C) • Electronic heater -32°F to +175°F (-35.5°C to 79.4°C) Model Identification The model identif...

8 CALIFORNIA PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. IMPORTANT NOTICE These instructions are intended only for the use by qualified personnel, specifically trained and experi- enced in the ins...

10 Installation Codes Installations must be in accordance with local, state, provincial, and national codes, laws, regulations and ordinances. In the absence of local codes, installations must be in accordance with the latest editions of the: • National Fuel Gas Code, ANSI Z223.1/NFPA 54 • National ...

11 Fig. 3: Overall Dimensions Heater with Outdoor Stackless Top Heaters must not be installed under an overhang of less than 3 ft (0.9m) from the top of the heater. Three sides must be open in the area under the overhang. Roof water drainage must be diverted away from heaters installed under overhan...

12 The outdoor stack serves the same function as the low profile stackless top and should be installed in accor- dance with the same clearance requirements. Follow the installation instructions provided with the Outdoor Stack Kit for installation. Indoor Installation The heater is design-certified f...

13 4 ft (1.2m) 4 ft (1.2m) 1 ft (0.3m) 10 ft (3m) 4 ft (1.2m) 3 ft (0.9m) Fig. 5: Outdoor Installation Clearances 2’ (0.6m) MIN 10’ (3m) OR LESS 2’ (0.6m) MIN 5’ (1.5m) MIN Fig. 6: Vent Piping Requirements The weight of the vent stack or chimney must not rest on heater drafthood. Support must be pro...

14 Fig. 7: Gas Line Sediment Trap NOTE: Do not use Teflon tape on gas line pipe thread. A flexible pipe sealant suitable for LP gases is recommended. Gas Pressure Regulator The gas pressure regulator is preset at 4.0 in W.C. (1.0kPa) for natural gas and 10.0 in W.C. (2.5kPa) for propane gas. If adju...

15 Pipe Sizing for Gas Connections Water Connections The heater requires water flow and positive pressure to fire and operate properly. It must therefore be installed downstream of the discharge side of the filter pump. A typical installation is plumbed as follows: 1. The inlet side of the filter is...

16 If there is any possibility of back-siphoning when the pump stops, it is recommended that a check valve (or valves) also be installed in the system. Internal Automatic Bypass Valve A built-in automatic bypass valve is provided in the In/Out header. The internal bypass valve automatical- ly respon...

17 Installation Instructions—240 Volt 1. Disconnect the 120V power cord from power source. 2. Remove knurled screw from the lower front panel. 3. Remove the front panel and set aside. 4. Remove the two stainless screws holding the con- trol panel in place. 5. Lower the control panel and then sway it...

18 Control Adjustments—Digital The pool heater (chauffe-piscine) touchpad, located on the upper front panel of the heater, allows the user to select either POOL or SPA operation, and to adjust the setpoint temperature. The LCD display window indicates the mode (OFF, SPA, POOL) and the actual water t...

20 Service Menu and Fault History To access the Service Menu and fault history, press the MENU/SET and UP buttons simultaneously for 3 to 5 seconds. The heater will continue to operate nor- mally while in the Service Menu. The first screen displayed is the Flame Strength indicator, which indi- cates...

22 STATUS AND DIAGNOSTICS The digital thermostat models are programmed to display a variety of status and diagnostic messages, depend- ing on the operating conditions. NOTE: The LCD temperature display may not agree with the temperature reading of your pool or spa ther- mometer. The heater reads the...

25 Wiring Diagrams Fig. 19: Wiring Diagram—Analog Models Fig. 20: Wiring Diagram—Digital Models

26 Post Start-Up Inspection Do not use this heater if any part has been under water. Immediately call a qualified service technician to inspect the heater and to replace any part of the control system and any gas control which has been under water. N'utilisez pas cet appareil s'il a ete plonge dans ...

27 1. Turn off gas valve, manual gas valve, and electri- cal supply to the heater. 2. Open the drain plug located on the In/Out header, under the water pipes. 3. Remove the 2 wires from the water pressure switch and unscrew the water pressure switch to break any vacuum in the system. Remove the pres...

28 3. Turn pump off and on several times. Heater should shut off immediately. If it does not, repeat the above steps. Two-Speed Pumps In some cases, the flow on the low-speed is insuffi- cient to operate the heater. This is apparent when the water pressure switch cannot be further adjusted or if the...

30 Pilot Removal & Cleaning Remove burner tray from heater 1 Disconnect tubing from gas valve. 2 Remove (2) screws holding pilot bracket in place. 3 see image. Remove the pilot assembly by pushing the pilot 4 Remove the locating pilot screw from the bracket 5 to release the pilot assembly. Rever...

31 Heat Exchanger Removal 1. Shut water, gas and electricity off, close valves and relieve pressure, then remove relief valve. Remove side inspection panels. 2. Remove the (8) top jacket holding screws. Remove the jacket top. 3. Remove the screws holding down the flue collec- tor. Remove the flue co...

32 TROUBLESHOOTING Mechanical PROBLEM CAUSE SOLUTION Harmonics, or whining noise U.G. inoperative................................... Check movement by putting in hot water (110°F (43.3°C) or higher). If no movement, replace. *Debris or restriction in system............ Locate the restriction and rem...

33 Power On Is the water temperature displayed? NO YES Push MODE switch to select " Pool " or " Spa " Push Temp arrow to scroll to desired temperature NO Water temperature and set temperature displayed? YES “ Heating ” will display briefly NO NO YES YES Flame icon displayed and flash...

34 START Turn knob to a desired temperature zone. Turn switch on. NO After six (6) seconds, does the pilot spark? YES Is the pilot lit? NO NO YES YES Do the burners light? END NO YES Is there power to the heater? Check the gas valve. There must be 24VAC between PV and MV/PV . The home circuit breake...

35 1-J 1-G 1-R 1-S 2-S 3-S 2-M 3-M 4-M 1-J 2-J 2-J 3-J 4-J 4-J 1-V 2-V 3-V 4-V 11-M 12-M 1-B 10-S 5-S 6-S 7-S 8-S 9-S 9-S 3-B 6-C 8-C 9-C 2-H 3-H 4-H 5-H 6-H 6-H 7-H 7-H 2-C 3-C 10-M 9-M 8-M 5-V 5-C 4-S 7-C 4-C 10-C ILLUSTRATED PARTS LIST