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Lochinvar RPD-I-S User Manual

Summary of RPD-I-S

  • 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. What to...

  • Page 2: Congratulations!

    Rpd-i-s rev a 2 congratulations! You have just purchased one of the finest water heaters on the market today! This installation, operation and instruction manual will explain in detail the installation and maintenance of your new powered direct vent gas water heater. We strongly recommend that you c...

  • Page 3

    Rpd-i-s rev a 3 table of contents page general information ................................................................. 4 installation. ................................................................................. 5 locating the water heater ....................................................

  • Page 4

    Rpd-i-s rev a 4 general information this gas-fired water heater’s design is certified by csa international under the american national standard z21.10.1 and csa 4.1-m, most current editions at the time of manufacture. This water heater must be installed in accordance with local codes or, in the abse...

  • Page 5

    Rpd-i-s rev a 5 general information continued- a sacrificial anode is used to extend tank life. The removal of this anode, for any reason, will nullify the warranty. In areas where water is unusually active, an odor may occur at the hot water faucet due to a reaction between the sacrificial anode an...

  • Page 6

    Rpd-i-s rev a 6 installation (locating the water heater) continued- water heater corrosion and component failure can be caused by the heating and breakdown of airborne chemical vapors. Examples of some typical compounds that are potentially corrosive are: spray can propellants, cleaning solvents, re...

  • Page 7

    Rpd-i-s rev a 7 installation (locating the water heater) continued- the water heater must be located close enough to the outside wall to keep the venting distance within the maximum distance described in the installation instructions. Read the venting section in this installation instruction manual ...

  • Page 8

    Rpd-i-s rev a 8 minimum clearances this installation must allow access to the front of the water heater and adequate clearance must be provided for servicing and operating this water heater. The water heater may be installed on either a combustible or non- combustible floor. If the water heater is t...

  • Page 9

    Rpd-i-s rev a 9 venting continued- canadian installations 1 us installations 2 a= clearance above grade, veranda, porch, deck or balcony 12 inches (30 cm) 12 inches (30 cm) b= clearance to window or door that may be opened 12 inches (30 cm) 12 inches (30 cm) c= clearance to permanently closed window...

  • Page 10

    Rpd-i-s rev a 10 venting continued- vent pipes serving power vented appliances are classified by building codes as “vent connectors”. Required clearances from combustible materials must be provided in accordance with information in this manual under location of water heater and clearances, and with ...

  • Page 11

    Rpd-i-s rev a 11 venting continued- in order to effectively control condensate from adversely affecting the mechanical components of the water heater several methods may be employed: 1. For horizontal installations the vent pipe can be installed with a downward slope (not less than 1/8" (3 mm)) and ...

  • Page 12

    Rpd-i-s rev a 12 venting continued- table 1 - vent connector lengths for 3” (7.6 cm) diameter vent pipe terminating # of elbows (excl. Vent term.) maximum straight lengthft (m) minimum straight length ft (m) 48, 65 gal. 75 gal. Through the wall 1 55 (16.8) 45 (13.7) 2 (.6) through the wall 2 50 (15....

  • Page 13

    Rpd-i-s rev a 13 venting continued- note: when using 4” (10.2 cm) vent pipe, use two 4” (10.1 cm) to 3” (7.6 cm) reducers for each portion of the vent. One reducer is installed just after the blower and the other reducer is used just prior to exiting the building. Exit the building wall with 3” (7.6...

  • Page 14

    Rpd-i-s rev a 14 venting continued- through the wall venting: (horizontal venting with standard vent terminals). Cut two 3 1/2 in. (8.9 cm) diameter holes in the wall at the point where the vent connector is going to pass through the wall. Use the proper cement to secure the 90° vent terminal provid...

  • Page 15

    Rpd-i-s rev a 15 venting continued- vent terminal configuration for mild climates figure 4a when venting through the wall, the exhaust terminal must exit the structure at a minimum of 16" (40.6 cm) from either side, or any location above the intake terminal. The exhaust terminal must not be located ...

  • Page 16

    Rpd-i-s rev a 16 venting continued- through the wall venting: (horizontal venting with concentric vent). Cut one 4 5/8 in. (11.7 cm) diameter hole in the wall at the point where the vent connector is going to pass through the wall. Use the proper cement to secure the vent terminal to the vent connec...

  • Page 17

    Rpd-i-s rev a 17 venting continued- 3” vent installation 4” vent installation 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 len...

  • Page 18

    Rpd-i-s rev a 18 venting continued- through the roof venting: (vertical venting concentric vent terminal): cut the necessary holes through the roof and ceiling and install the vent connector as shown in figure 7. Make sure that the installation meets the local codes and/or the national fuel gas code...

  • Page 19

    Rpd-i-s rev a 19 venting continued- through the wall venting with low ground clearance: when venting cannot exit through the wall at a height greater than or equal to 12” (30.5 cm) above the ground, or anticipated snow level, the installation must be modified as shown below (see figure 8). Refer to ...

  • Page 20

    Rpd-i-s rev a 20 venting continued- table 3 3” (7.6 cm) vent connector lengths from inside wall for low ground clearance installations terminating # of elbows (excl. Vent term.) max straight length ft (m) min straight length ft (m) 48,65 gal. 75 gal. (2) 90  elbows with (1) 90  elbow 1 40 (12.2) 3...

  • Page 21

    Rpd-i-s rev a 21 venting continued- part ii - venting specifications for: 40 gallon (151.4l) 50 gallon (189.2l) table 5 - vent connector lengths for 2” (5.1 cm) diameter vent pipe terminating # of elbows (excl. Vent term.) maximum straight lengthft (m) minimum straight length ft (m) through the wall...

  • Page 22

    Rpd-i-s rev a 22 venting continued- note: when using 3” (7.6 cm) vent pipe, use two 3” (7.6 cm) to 2” (5.1 cm) reducers for each portion of the vent. One reducer is installed just after the blower and the other reducer is used just prior to exiting the building. Exit the building wall with 2” (5.1 c...

  • Page 23

    Rpd-i-s rev a 23 venting continued- through the wall venting: (horizontal venting with standard vent terminals). Cut two 2 1/2 in. (6.4 cm) diameter holes in the wall at the point where the vent connector is going to pass through the wall. Use the proper cement to secure the 90° vent terminal provid...

  • Page 24

    Rpd-i-s rev a 24 venting continued- vent terminal configuration for mild climates figure 11a when venting through the wall, the exhaust terminal must exit the structure at a minimum of 16" (40.6 cm) from either side, or any location above the intake terminal. The exhaust terminal must not be located...

  • Page 25

    Rpd-i-s rev a 25 venting continued- through the wall venting: (horizontal venting with concentric vent). Cut one 3 5/8 in. (11.7 cm) diameter hole in the wall at the point where the vent connector is going to pass through the wall. Use the proper cement to secure the vent terminal to the vent connec...

  • Page 26

    Rpd-i-s rev a 26 venting continued- 2” vent installation 3” vent installation 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 le...

  • Page 27

    Rpd-i-s rev a 27 venting continued- through the roof venting: (vertical venting concentric vent terminal): cut the necessary holes through the roof and ceiling and install the vent connector as shown in figure 14. Make sure that the installation meets the local codes and/or the national fuel gas cod...

  • Page 28

    Rpd-i-s rev a 28 venting continued- through the wall venting with low ground clearance: when venting cannot exit through the wall at a height greater than or equal to 12” (30.5 cm) above the ground, or anticipated snow level, the installation must be modified as shown below (see figure 15). Refer to...

  • Page 29

    Rpd-i-s rev a 29 venting continued- table 7 2” (5.1 cm) vent connector lengths from inside wall for low ground clearance installations terminating # of elbows (excl. Vent term.) max straight length ft (m) min straight length ft (m) (2) 90  elbows with (1) 90 elbow 1 20 (6.1) 5 (1.5) (2) 90  elbow...

  • Page 30

    Rpd-i-s rev a 30 vent pipe preparation and joining most failures in vent systems result from improper preparation and joining of pipe and fittings. The guidelines below must be followed when installing the venting system. If you have any question about the application or installation of the venting ...

  • Page 31

    Rpd-i-s rev a 31 water connections note: before proceeding with the installation, close the main water supply valve. After shutting off the main water supply, open a faucet to relieve the water line pressure to prevent any water from leaking out of the pipes while making the water connections to the...

  • Page 32

    Rpd-i-s rev a 32 water connections continued- warning for protection against excessive temperatures and pressure, install temperature and pressure protective equipment required by local codes, but not less than a combination temperature and pressure relief valve certified by a nationally recognized ...

  • Page 33

    Rpd-i-s rev a 33 water connections continued- this water heater can deliver scalding temperature water at any faucet in the system. Be careful whenever using hot water to avoid scalding injury. Certain appliances such as dishwashers and automatic clothes washers may require increased temperature wat...

  • Page 34

    Rpd-i-s rev a 34 gas connections the gas supply lines must meet all requirements of the national fuel gas code (ansi z223.1-latest edition), or in canada can/cga b149.1 natural gas installation code (latest edition) or can/cga b149.2 propane installation code (latest edition). The minimum permissibl...

  • Page 35

    Rpd-i-s rev a 35 electrical connections all electrical wiring and connections must be in accordance with the national electric code ansi/nfpa no. 70 (latest edition), or the canadian electrical code c22.1 (latest edition) and any local codes which may apply. The water heater must be electrically gro...

  • Page 36

    Rpd-i-s rev a 36 wiring diagram figure 16.

  • Page 37

    Rpd-i-s rev a 37 general operation to fill the water heater 1. Close the water heater drain valve by turning the stem clockwise. 2. Open the cold water supply shut-off valve. 3. Open several hot water faucets to allow air to escape from the system. 4. When a steady stream of water flows from the fau...

  • Page 38

    Rpd-i-s rev a 38 lighting and shutdown instructions.

  • Page 39

    Rpd-i-s rev a 39 hotter water increases the risk of scald injury. Scalding may occur within five (5) seconds at a temperature setting of 140°f (60°c). To protect against hot water injury, install an asse approved mixing valve in the water system. This valve will reduce point of discharge water tempe...

  • Page 40

    Rpd-i-s rev a 40 burner flame check steel burner: these models are equipped with self adjusting air mixture and do not have an adjustable air shutter (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. Th...

  • Page 41

    Rpd-i-s rev a 41 maintenance the following maintenance should be performed by a qualified service technician at the minimum periodic intervals suggested below. In some installations, the maintenance interval may be more frequent depending on the amount of use and the operating conditions of the wate...

  • Page 42

    Rpd-i-s rev a 42 maintenance continued- 5. Annually remove the inner door and main burner assembly to clean orifices and related parts of any dirt or other foreign material. Inspect the burner ports for obstructions or debris and clean with a wire brush as needed. Wire brush and/or vacuum clean the ...

  • Page 43

    Rpd-i-s rev a 43 maintenance continued- 6. At least once a year, check the combination temperature and pressure relief valve to insure that the valve has not become encrusted with lime. Lift the lever at the top of the valve several times until the valve seats properly without leaking and operates f...

  • Page 44

    Rpd-i-s rev a 44 maintenance continued- contact your supplier or plumbing professional for replacement parts or contact the company at the address given on the rating plate of the water heater. Provide the part name, model and serial numbers of the water heater when ordering parts. Read the warranty...

  • Page 45

    Rpd-i-s rev a 45 troubleshooting one short flash every four seconds alternates bright and dim (heartbeat) thermostat calling for heat (no fault). Short flash once every second weak pilot signal on last call for heat. Two flashes, three second pause pressure switch not working-closed position. Three ...

  • Page 46

    Rpd-i-s rev a 46 troubleshooting continued- six flashes-four flashes, three second pause undesired-false pilot flame sensed. System auto resets. Seven flashes, three second pause flammable vapor sensor fault detected, see warning label eight flashes-one flash, three second pause flammable vapor sens...

  • Page 47

    Rpd-i-s rev a 47 parts list drawing parts list part name and description 1. Blower assembly 15. Pilot assembly 2. Temp. Switch 16. Cast iron burner 3. Pressure switch n.O. 17. Main burner orifice 4. Flue baffle 18. Gas feedline 5. Honeywell gas control valve 19. Flammable vapors sensor 6. Drain valv...

  • Page 48

    Rpd-i-s rev a 48 the following instructions are for installation of: gas water heaters suitable for water (potable) heating and space heating 1. All piping components connected to this water heater for space heating applications must be suitable for use with potable water. In massachusetts, space he...