Rheem RS47-21BP manual

The purpose of this manual is twofold: one, to provide the installer with the basic directions and recommendations for the proper installation and adjustment of the water heater; and two, for the owner–operator , to explain the features, operation, safety precautions, maintenance and troubleshooting of the water heater . This manual also includes[...]

Safety Information Introduction . . . . . . . . . . . . 3, 4 Safety Precautions . . . . . . . 5, 6 Installation Instructions Location . . . . . . . . . . . . . . . . . 7 Unit Specifications & Parts 7,8 Pre-Installation Review . . . . . 9 System Requirements . . . . . 10 Pitch Requirements . . . . . . . . 1 1 Roof Requirements . . . . 12, 13 Ele[...]

Intr oduction Thank you for purchasing a solar water heating system. It is one of the most effective and trouble-free systems available today . In addition to reducing your water-heating bills, it will help preserve precious natural resources by using free energy from the sun. As with an electric or gas water heater , your new solar water heating s[...]

4 Intr oduction continued... While your system is one of the most efficient available, there are two simple steps you can take to increase your water-heating cost savings. Keep the use of the Backup Heater to a Minimum Y ou can save the most money on your water-heating bills by using the backup heater on your system as little as possible. If the su[...]

Time/T emperatur e Relationship in Scalds T emperature T ime T o Produce a Serious Burn 120°F More than 5 minutes 125°F 1½ to 2 minutes 130°F About 30 seconds 135°F About 10 seconds 140°F Less than 5 seconds 145°F Less than 3 seconds 150°F About 1½ seconds 155°F About 1 second T able courtesy of Shriners Burn Institute The chart shown abo[...]

6 IMPOR T ANT SAFETY INFORMA TION. READ ALL INSTRUCTIONS BEFORE USING . W ARNING! For your safety , the information in this manual must be followed to minimize the risk of fire or explosion, electric shock, or to prevent pr operty damage, personal injury , or loss of life. Be sure to r ead and understand the entire Use and Car e Manual before attem[...]

Installing the water heater . The location chosen for the water heater must take into consideration the following: Local Installation Regulations This water heater must be installed in accordance with these instructions, local codes, utility codes, utility company requirements or , in the absence of local codes, the latest edition of the National E[...]

Installing the water heater . 8 Solar Collector 3/4” Union Nut 3/4” T/P V alve Fill Fitting Collector Nut 18mm Union Cone 3/4” Check V alve (NOT INCLUDED) Collector Hot Pipe Collector Plug Lag Screw (5/16” x 1 3/4”) (NOT INCLUDED) 3/4” Cold W ater Expansion V alve Collector Clamps 3/4” T ail Plug T empering V alve PR6 Jacket Relief V [...]

9 Pr e-Installation These installation inspection procedur es include; • Review of local building codes for site requirements and specific guidelines for plumbing and electrical installation. • Inspection of installation site. • Completion of the Pre-installation Checklist, including customer ’ s signature. Site Inspection Equipment • Pre[...]

Installing the water heater . 10 The system must face between 135 - 225° (Ideal direction is true South): (Refer to the Figure on the right). Installations outside this range requir e either an additional collector or frame. Site must be shade-free year -round and clear of obstructions. Plumbing/Electrical stub-out • 1' 6" left side fo[...]

11 Pitch Requir ements Correct operation r equires a 15°- 45° pitch (slope). This can be done by using the roof slope itself or a frame CAUTION: DO NOT install on a roof with a pitch beyond 45°. ! Use pitch gauge and compass and complete the following steps. Record the results on the checklist. • Record pitch and compass bearing of proposed in[...]

Installing the water heater . Roof Survey Record the following on the checklist: • The type of roofing material (tile, shingle, tar & gravel, metal, etc.). • The condition of the roof. Note any repair requirements needed prior to installation. • Draw diagram (top view) as shown below , of installation area. Mark location of the system and[...]

13 Conventional Roof Modifications T russ Frame Modifications Allowable Spans for T russes 2” x 4” T op Chord 2” x 6” T op Chord 24” O.C. Kickers Bottom Chord Pitch Roof Material 21” 32” X 2”x4” or 2”x6” 3:12¹ T ile 24” 36” X 2”x4” or 2”x6” 3:12¹ Shake 25” 38” X 2”x4” or 2”x6” 4:12² T ile 28” 42“[...]

14 Installing the water heater . Review the checklist for installation r equirements. Check the following before beginning installation. Permits Obtain required permits before installation. W ork Force An 80 gallon storage tank weighs up to 242 lbs empty , requiring a crew of two or more to install. Inventory Review Section on Frames, included hard[...]

NOTICE:All wiring must conform to local codes or the latest edition of National Electrical Code ANSI/NFP A 70. W ARNING: Any wiring outside of the house should be rated for the appr opriate weather conditions. If the system is being used as a pre-heater to an existing water heater , the electrical r eview and installation may not be requir ed. A 24[...]

16 Installing the water heater . T ypical Installation Choose the installation type from the following; 1. As a replacement for an existing water heater (Preferred). 2. As the stand alone source of hot water for new construction or locations without a previous water heater . 3. As a pre-heater to an existing water heater . NOTICE: Using the system [...]

17 Plumbing System Schematic for Replacement of Existing Electric W ater Heater T ank 3/4” 3/4” Plumbing System Schematic for Installation of stand alone W ater Heater V alve Settings: Solar Only = (TWV1-1) + (TWV2-1) + (Pre Heat OFF) Storage Only = (TWV1-2) + (TWV2-2) + (Pre Heat OFF) Solar Pre Heat = (TWV1-1) + (TWV2-2) + (Pre Heat ON) TWV1 =[...]

18 Installing the water heater . T ypes of Roof Installation Installation types are divided into the following: S tandard Installation: The system is mounted to wood or Unistrut runners directly to the roof with no need for pitch or directional changes. Metal / S turdy Tile Installation: The system is mounted directly to the roof with no need for p[...]

Roof Pr eparation Refer to the checklist for necessary roof modifications on page 12. Install supports for Fragile T ile Roof The system may be installed directly on most roof types if the roof is in good condition with adequate drainage. For other types of roofs, do the following: Clear area of roofing material from top of roof to lower edge of ro[...]

20 Installing the water heater . W ood Runner Detail for 16” & 24” On-Center Rafters for S tandard Installation Collector Extrusion Detail for S tandard Installation CAUTION: The Extrusion must slope 1/2” per collector from horizontal (hot pipe side to be higher) for the system to work correctly . ! Metal or Tile Installation 1. Mark tank[...]

21 Collector Extrusion & S trap Installation Detail - T ile Roof CAUTION: S traps must be attached directly onto the rafters or trussed not less than 39” apart and not more than 63" apart. ! CAUTION: The Extrusion must slope 1/2” per collector from horizontal (hot pipe side to be higher) for the system to work correctly . ! Collector E[...]

22 Installing the water heater . Frame Installation continued.... • Drill each runner in center and 6" from runner ends and screw to rafters or trusses with 5/16" x 6" lag screws and washers, • Flash and seal all roof penetrations. 3. Move all pieces of Frame to roof and assemble (refer to Figure below). 4. Attach Frame to runner[...]

23 Collector Installation Collector Union Collector Union Collector Nut Fill Assembly Collector Nut Collector Plug Collector Fitting Installation Detail 1. Set collectors in place, resting lower ends on collector extrusion or frame, 2. Remove plugs from corners of the collectors 3. Connect collectors with collector unions. Do not tighten fully (ref[...]

24 Installing the water heater . S torage T ank Installation CAUTION: Do not damage internal collector absorber with screws. ! Collector Hot Pipe T ank Clamp 1. Spread open (4) four tank clamps (2 for metal or sturdy tile installations) to allow room to clear tank foot, and attach to rear foot of tank. 2. Place the (2) two tank-to-collector spacers[...]

25 6. Level the tank. 7. T ighten the tank system in place. 8. T ighten hot pipe and downpipe connections. 9. Install tee adapter (See figure at right). 10. Install T/P V alve into tee adaptor (See figure at right). 1 1. Install tail plug in right end of tank (See figure at left). 1 1. Continue with plumbing installation as described in section bel[...]

26 Installing the water heater . See Key to S tub - Out Details Below: All plumbing and wiring Stub-Outs to be a minimum of 18" above roof frame. (E) Electrical service (240V , 20-amp required only if using auxiliary electrical backup in tank) (R) 3/4" Relief Line (H) Hot Supply to House (C) 3/4" Cold Supply to Rheem thermosiphon tan[...]

CAUTION: On new construction, Do Not fill storage tank and/or charge the closed loop system until the water heater is ready for use. Cover the collectors until the system is filled and charged. Place a tag on the system if it s not filled and charged. ! Closed Loop Fluid The closed loop must be filled ONL Y with Hartgard solution and potable water [...]

28 Installing the water heater . • Rectify leakage if observed at any of the connections and repeat steps indicated on previous page. • Release the pressure from the closed loop by loosening the PR6 valve from the T est Block. • When the pressure is zero, tighten the PR6 Jacket Relief V alve. • Once again remove the Fill Plug from the Fill [...]

29 Connect S torage T ank to Electrical Supply • Use only a utility supply having a maximum of 240 volt, 1 phase, 60Hz, power supply . W ARNING: T urn off all power to avoid injury . • The water heater must always be connected to the ground in accordance with the local codes. • Connect the branch circuit equipment grounding means and system g[...]

30 Safety Pr ecautions Do turn off power to water heater if it has been subjected to over heating, fire, flood, physical damage. Do Not turn on water heater unless it is filled with water . Do Not turn on water heater if cold water supply shut-off valve is closed. If there is any difficulty in understanding or following the Operating Instructions o[...]

31 If adjustment is necessary… T urn off the power to the water heater . Remove the jacket access panel. Using a small screwdriver , set the thermostat dial pointer to the desired temperature. Replace the jacket access panel. T urn on the power to the water heater . 5 5 8 0 75 7 0 6 5 6 0 5 0 : E W T 1L 2 S-2 0 3 D IFF EC O : 83 8 L 1 1 0 MAY 20 [...]

Anode Rod This water heater is equipped with an anode rod designed to prolong the life of the glass lined tank. The anode rod is slowly consumed, thereby eliminating or minimizing corrosion of the glass lined tank. W ater sometimes contains a high sulfate and/or mineral content and together with cathodic protection process can produce a hydrogen su[...]

Car e and cleaning of the water heater . 33 V acation and Extended Shut-Down NOTICE: Refer to the Hydrogen Gas Caution i n the Operating Instructions. DANGER: Use extreme car e to avoid falling while on a ladder or the r oof. If a roof section does not appear to be solid under foot, do not subject it to any added weight until it is adequately reinf[...]

34 Befor e Y ou Call For Service… T roubleshooting T ips Save time and money! Review the chart on this page first and you may not need to call for service. Problem Possible Causes What T o Do Not enough Hot W ater Solar circuit breaker tripped Reset/replace as necessary or fuse blown Safety Thermostat tripped Reset/replace as necessary . or malfu[...]

35 T roubleshooting T ips Save time and money! Review the chart on this page first and you may not need to call for service. Problem Possible Causes What T o Do No Hot W ater Hot water tempering valve Repair/replace as necessary fouled Pressure imbalance (over 5 psi) Locate and repair cause of imbalance. between hot and cold water lines Fouled pres[...]

Frames Installations using 17.5° “A” Frames This ‘A ’-Frame is not for use in areas susceptible to hurricanes. In areas susceptible to hurricanes or very high winds, a separate set of instructions and a hurricane frame mounting kit is required and available from Rheem. The hurricane frame mounting kit is suitable for with pitch and low pit[...]

Frames continued..... Side Pitch Installations (T ile Roof) Assemble the ‘A ’ Frame kit and loosely bolt the baseplate to one side of the angle frame. For installations on a roof with a pitch greater than 20°, a ‘U’ bracket and small pipe legs should be used on top of the baseplate as shown. Note that the baseplate is positioned towards th[...]

38 Against Pitch Installations (T iled Roof) Assemble the stand and then loosely bolt the baseplate to the frame in position. For installations on a roof with a pitch greater than 20°, a ‘U’ bracket and small pipe legs should be used on top of the baseplate. The frame installation proceeds following the instructions for side pitch installation[...]

39 Frames continued..... V ariations for Shallow Pitch or Flat Deck Roofs On shallow pitch roofs (less than 8°) of metal or fibreboard materials, the frame may be installed without using the pipe legs, provided that the inclination of the solar collector remains greater than 8°. On flat roofs, the assembled frame may be installed without the base[...]

40 IF YOU NEED SER VICE 1. Should you have any questions about your new water heater , or if it requires adjustment, repair , or routine maintenance, it is suggested that you first contact your installer , plumbing contractor or previously agreed upon service agency . In the event the firm has moved, or is unavailable, refer to the telephone direct[...]