Lochinvar RPD-I-S User Manual
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Lochinvar RPD-I-S User Manual

Lochinvar RPD-I-S User Manual

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POWERED DIRECT VENT GAS WATER HEATER
A Spanish language version of these instructions is available by contacting the
company listed on the rating plate.
La version espanola de estas instrucciones se puede obtener al escribirle a la
fabrica cuyo nombre aparece en la placa de especificaciones.
INSTALLATION AND OPERATING INSTRUCTION MANUAL
WARNING:
If the information in these instructions is not
followed exactly, a fire or explosion may result causing
property damage, personal injury, or death.
Do not store or use gasoline or other flammable,
combustible, or corrosive vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
Do not try to light any appliance.
Do not touch any electrical switch; do not use any
phone in your building.
Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
If you cannot reach your gas supplier, call the fire
department.
Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
For your family's comfort, safety and convenience we recommend
this water heater be installed and serviced by a plumbing
professional.
FOR YOUR SAFETY

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  • Page 1 POWERED DIRECT VENT GAS WATER HEATER A Spanish language version of these instructions is available by contacting the company listed on the rating plate. La version espanola de estas instrucciones se puede obtener al escribirle a la fabrica cuyo nombre aparece en la placa de especificaciones. INSTALLATION AND OPERATING INSTRUCTION MANUAL WARNING: If the information in these instructions is not...
  • Page 2 Once the flammable vapor has been evacuated, contact your plumbing professional or the manufacturer for further instructions. Replacement of a Flammable Vapor Ignition Resistant System equipped water heater due to a flammable vapor shutdown is not covered under the terms of the limited warranty. RPD-I-S Rev A...

  • Page 3: Table Of Contents

    Lighting and Shutdown Instructions ......... 38 Thermostat Adjustment .............. 39 Burner Flame Check ..............40 MAINTENANCE .................. 41 TROUBLESHOOTING ................ 45 PARTS LIST AND PARTS LIST DRAWING ........47 INSTALLATION INSTRUCTIONS FOR POTABLE WATER AND SPACE HEATING ................48 RPD-I-S Rev A...

  • Page 4: General Information

    Make sure that you check the rating plate and combination gas control on the water heater to be certain that the type of gas being supplied corresponds with the marking on the rating plate and combination gas control. RPD-I-S Rev A...

  • Page 5: Installation

    DO NOT locate the water heater where water lines could be subjected to freezing temperatures. Make sure the cold water pipes are not located directly above the gas control so that condensate during humid weather does not drip on the controls. RPD-I-S Rev A...
  • Page 6  Immediately call your gas supplier from a neighbor’s telephone. Follow the gas supplier’s instructions.  If you cannot reach your gas supplier, call the fire department. DO NOT OPERATE APPLIANCE UNTIL THE LEAKAGE IS CORRECTED! RPD-I-S Rev A...
  • Page 7 Note: For California installation this water heater must be braced, anchored, or strapped to avoid falling or moving during an earthquake. See instructions for correct installation procedures. Instructions may be obtained from DSA Headquarters Office, 1102 Q Street, Suite 5100, Sacramento, CA 95811. RPD-I-S Rev A...

  • Page 8: Minimum Clearances

    (0) inch (0 cm) from the sides and rear, five (5) inches (12.7 cm) from the front of the jacket, zero (0) inch (0 cm) from the vent connector and fifteen (15) inches (38.1 cm) from the jacket top. Venting Figure 1 – Direct Vent Terminal Clearances RPD-I-S Rev A...
  • Page 9 Do not terminate the exhaust vent terminal over public area or walkways where condensate or vapor can cause nuisance or hazard. The vent shall terminate a minimum of 12” (25.4 cm) above expected snowfall level to prevent blockage of vent termination. RPD-I-S Rev A...
  • Page 10 Formation of condensation in the venting system of Power Vented water heaters is dependent upon installation conditions including, but not limited to: ambient temperature and humidity of installation location; ambient temperature and humidity of venting space; vent distance and slope; and product usage. RPD-I-S Rev A...

  • Page 11: Gal. (181.6 L) 65 Gal. (246.8 L) 75 Gal. (283.9 L)

    Refer to the venting illustrations on the following pages. Make sure the vent pipe terminal elbow fitting is at least 1” (2.5 cm) away from the edge of the wall. * Only vent pipe certified to ULC S636 may be used in Canada. RPD-I-S Rev A...
  • Page 12 15 (4.6) Through the Roof 95 (29.0) 85 (25.9) 15 (4.6) Through the Roof 90 (27.4) 80 (24.4) 15 (4.6) Through the Roof 85 (25.9) 75 (22.9) 15 (4.6) 80 (24.4) 70 (21.3) Through the Roof 15 (4.6) RPD-I-S Rev A...
  • Page 13 Figure 2 IMPORTANT All of the Venting connections must be leak checked with a soap and water solution upon initial start up of the water heater. Any leaks must be repaired before continuing operation of the water heater. RPD-I-S Rev A...
  • Page 14 16” (40.6 cm) apart (see figure 4a). Use the proper cement and assembly procedures to secure the vent connector joints between the terminal and the blower outlet. Provide support brackets for every 5 feet (1.5m) of horizontal vent. 3” VENT INSTALLATION 4” VENT INSTALLATION Figure 3 RPD-I-S Rev A...
  • Page 15 The air intake screen can be removed for cold installations but this may make the air intake susceptible to debris buildup from birds or other animals. If the air intake screen is removed to prevent freezing, it is recommended that the air inlet screen be installed during the spring. RPD-I-S Rev A...
  • Page 16 Cut the necessary holes through the roof and ceiling and install the vent connector as shown in Figure 6. Make sure that the installation meets the local codes and/or The National Fuel Gas Code ANSI Z223.1 (Latest Edition) or CGA/CAN B149 Installation Code (latest edition). RPD-I-S Rev A...
  • Page 17 Figure 6 NOTE: For installations requiring both horizontal and vertical runs, the following rule must be followed: Total length of straight pipe (both horizontally and vertically) must not exceed the maximum equivalent length listed in these instructions. RPD-I-S Rev A...
  • Page 18 (both horizontally and vertically) must not exceed the equivalent length listed in these instructions. For the concentric vent terminal the maximum vent length is reduced by 10 feet. CAUTION FOR VERTICAL INSTALLATIONS WITH CONCENTRIC VENT TERMINAL, CONDENSATE KIT, P/N 239-45875-00, MUST BE USED. RPD-I-S Rev A...
  • Page 19 3” (7.6 cm) vent pipe or Table 4 for maximum lengths using 4” (10.2 cm) vent pipe. The exhaust and intake terminals must not be less than 16 in. (40.6 cm) apart (see figure 4a). 3” VENT INSTALLATION 4” VENT INSTALLATION Figure 8 RPD-I-S Rev A...
  • Page 20 The capacity of the induced draft blower declines with increasing altitude due to a reduction in the air density. In order to assure safe and reliable performance of the water heater, contact the supplier for high altitude kit. RPD-I-S Rev A...

  • Page 21: Specifications For 40 Gal. (151.4 L) 50 Gal. (189.2 L)

    10 (3.1) Through the Roof 85 (25.9) 15 (4.6) Through the Roof 80 (24.4) 15 (4.6) Through the Roof 75 (22.9) 15 (4.6) Through the Roof 70 (21.3) 15 (4.6) Through the Roof 65 (19.8) 15 (4.6) RPD-I-S Rev A...
  • Page 22 Figure 9 IMPORTANT All of the Venting connections must be leak checked with a soap and water solution upon initial start up of the water heater. Any leaks must be repaired before continuing operation of the water heater. RPD-I-S Rev A...
  • Page 23 16” (40.6 cm) apart (see figure 11a). Use the proper cement and assembly procedures to secure the vent connector joints between the terminal and the blower outlet. Provide support brackets for every 5 feet (1.5m) of horizontal vent. 2” VENT INSTALLATION 3” VENT INSTALLATION Figure 10 RPD-I-S Rev A...
  • Page 24 The air intake screen can be removed for cold installations but this may make the air intake susceptible to debris buildup from birds or other animals. If the air intake screen is removed to prevent freezing, it is recommended that the air inlet screen be installed during the spring. RPD-I-S Rev A...
  • Page 25 Cut the necessary holes through the roof and ceiling and install the vent connector as shown in Figure 13. Make sure that the installation meets the local codes and/or The National Fuel Gas Code ANSI Z223.1 (Latest Edition) or CGA/CAN B149 Installation Code (latest edition). RPD-I-S Rev A...
  • Page 26 Figure 13 NOTE: For installations requiring both horizontal and vertical runs, the following rule must be followed: Total length of straight pipe (both horizontally and vertically) must not exceed the maximum equivalent length listed in these instructions. RPD-I-S Rev A...
  • Page 27 (both horizontally and vertically) must not exceed the equivalent length listed in these instructions. For the concentric vent terminal the maximum vent length is reduced by 10 feet. CAUTION FOR VERTICAL INSTALLATIONS WITH CONCENTRIC VENT TERMINAL, CONDENSATE KIT, P/N 239-45875-00, MUST BE USED. RPD-I-S Rev A...
  • Page 28 2” (5.1 cm) vent pipe or Table 4 for maximum lengths using 3” (7.6 cm) vent pipe. The exhaust and intake terminals must not be less than 16 in. (40.6 cm) apart (see figure 11a). Figure 15 RPD-I-S Rev A...
  • Page 29 The capacity of the induced draft blower declines with increasing altitude due to a reduction in the air density. In order to assure safe and reliable performance of the water heater, contact the supplier for high altitude kit. RPD-I-S Rev A...

  • Page 30: Vent Pipe Preparation And Joining

    Remove excess cement from around pipe and fitting with a clean rag. Cement drying times may vary. Be sure to allow for the recommended drying time before disturbing joints. For more specific and detailed information about the above, contact the vent pipe manufacturer, supplier, or competent professional. RPD-I-S Rev A...

  • Page 31: Water Connections

    When a steady stream of water flows through the faucets, close them and check all water connections for possible leaks. NEVER OPERATE THE WATER HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER. RPD-I-S Rev A...
  • Page 32 (4) inches (10.2 cm) be provided on the side of the water heater for servicing and maintenance of the combination temperature and pressure relief valve. Do not place a valve between the combination temperature and pressure relief valve and the tank. RPD-I-S Rev A...
  • Page 33 125°F (52°C) 1½ to 2 minutes 130°F (54°C) About 30 seconds 135°F (57°C) About 10 seconds 140°F (60°C) Less than 5 seconds 145°F (63°C) Less than 3 seconds 150°F (66°C) About 1½ seconds 155°F (68°C) About 1 second RPD-I-S Rev A...

  • Page 34: Gas Connections

    While checking for leaks care must be taken to prevent solution from contacting the electrical connections at the control. If electrical connections at the control become wet, they must be thoroughly dried before attempting to operate the water heater. RPD-I-S Rev A...

  • Page 35: Electrical Connections

    CAUTION Turn off or disconnect the electrical power supply to the water heater before servicing. Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. RPD-I-S Rev A...

  • Page 36: Wiring Diagram

    Wiring Diagram Figure 16 RPD-I-S Rev A...

  • Page 37: General Operation

    The drain valve has threads on the end that will allow the connection of a standard hose coupling. 5. Open a hot water faucet to allow air to enter the system. To refill the water heater, refer to “To Fill the Water Heater.” RPD-I-S Rev A...

  • Page 38: Lighting And Shutdown Instructions

    Lighting and Shutdown instructions RPD-I-S Rev A...

  • Page 39: Thermostat Adjustment

    Note: This water heater is equipped with an energy cut out device to prevent overheating. Should overheating occur, turn off the electrical supply to the water heater and contact a qualified service technician. RPD-I-S Rev A...

  • Page 40: Burner Flame Check

    (See Figure 18). At periodic intervals a visual check of the main burner and pilot flames should be made to determine if they are burning properly. The main burner flame should light smoothly from the pilot. Figure 18 RPD-I-S Rev A...

  • Page 41: Maintenance

    See Burner Flame Check section. If sooting or other burner anomalies are evident, shut down the water heater by turning off the gas per the instructions listed in this manual or as listed on the water heater. RPD-I-S Rev A...
  • Page 42 Do not touch any electric switch; do not use any phone in your building. If you are certain there is no flammable vapor present, check the flammable vapor sensor to make certain it has not become disconnected from the control. Review this instruction manual for troubleshooting. RPD-I-S Rev A...
  • Page 43 The use of a water softener may increase the speed of anode consumption. More frequent inspection of the anode is needed when using softened (or phosphate treated) water. 10. The blower has sealed motor bearings and does not require adding oil. RPD-I-S Rev A...
  • Page 44 Other U.S. and Foreign patent applications pending. Current Canadian Patents: 1,272,914; 1,280,043; 1,289,832; 2,045,862; 2,092,105; 2,107,012; 2,108,186; 2,112,515 Complete the following information and retain for future reference: Model No: Serial No: Service Phone Days: Nights: Address: Supplier: Supplier Phone No: RPD-I-S Rev A...

  • Page 45: Troubleshooting

    (Soft lockout) 4. Blower not spinning up to speed. System auto resets 5. Vent temperature too high after 5 minutes. 6. Faulty pressure switch or blower temp. switch. RPD-I-S Rev A...
  • Page 46 10. When the thermostat is satisfied the main and pilot gas valves close. 11. The blower operates for a short post purge period before shutting down. 12. The water heater remains in the stand-by mode until the next call for heat. RPD-I-S Rev A...

  • Page 47: Parts List And Parts List Drawing

    23. Blower Harness 10. Steel Burner 24. Flue Reducer 11. Diptube–Nipple 25. Tee and vent pipe assembly 12. Anode–Nipple 26. Air intake boot 13. Air Shutter (Cast Iron Only) 27. Vapor switch mounting bracket 14. T&P Relief Valve RPD-I-S Rev A...

  • Page 48: Installation Instructions For Potable Water And Space Heating

    ASSE approved mixing valve must be installed to temper the water for those uses in order to reduce the scald hazard potential. Please refer to the illustrations below for the suggested piping arrangement. RPD-I-S Rev A...

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