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Passive Solar Water
Heating Systems
This Solar Water Heating system is for the models listed below:
RS80-42BP
Printed in Australia
Use & Care Manual
With Installation Instructions for the Installer
RS47-21BP
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 a parts list.
It is very important that all persons who are
expected to install, operate or adjust this water
heater read the instructions carefully so they
may understand how to perform these
operations. If you do not understand these
instructions or any terms within it, seek
professional advice.
Any questions regarding the operation,
maintenance, service or warranty of this water
heater should be directed to the seller from
whom it was purchased. If additional
information is required, refer to the section on
"If you need service."
Do not destroy this manual. Please read
carefully and keep in a safe place for future
reference.
!
Recognize this symbol as an
indication of Important Safety
Information!
!
California Proposition 65 Warning:
This product contains chemicals known
to the State of California to cause
cancer, birth defects or other
reproductive harm.
AP13907 (09/06)
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Table of Contents
Related Manuals for Rheem RS47-21BP
Summary of Contents for Rheem RS47-21BP
- Page 1 “If you need service.” Do not destroy this manual. Please read carefully and keep in a safe place for future reference. RS47-21BP Recognize this symbol as an indication of Important Safety Information! California Proposition 65 Warning:...
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Page 2: Table Of Contents
Safety Information Introduction ... . 3, 4 Safety Precautions ..5, 6 Installation Instructions Location ....7 Unit Specifications &... -
Page 3: Introduction
Read each section of this manual thoroughly before beginning work on the system. CAUTION: Changes to the design or intended use of the Rheem Thermosiphon System will void the manufacturers warranty. Installation, troubleshooting, and maintenance must be performed by a qualified technician. - Page 4 The Rheem Thermosiphon systems operate on the passive thermosiphon principle a ‘closed loop’ to provide fail-safe freeze protection up to -30°F of the collector closed loop.
- Page 5 IMPORTANT SAFETY INFORMATION. READ ALL INSTRUCTIONS BEFORE USING. DANGER! WATER TEMPERATURE SETTING Safety and energy conservation are factors to be considered when selecting the water temperature setting of water heater’s thermostat. Water temperatures above 125°F can cause severe burns or death from scalding. Be sure to read and follow the warnings outlined on the label pictured below.
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Page 6: Safety Precautions
IMPORTANT SAFETY INFORMATION. READ ALL INSTRUCTIONS BEFORE USING. WARNING! For your safety, the information in this manual must be followed to minimize the risk of fire or explosion, electric shock, or to prevent property damage, personal injury, or loss of life. -
Page 7: Location
National Fire Protection Association, Batterymarch park, Quincy, MA 02269 as booklet ANSI/NFPA 70. hours on the Rheem closed loop models, it is suggested that all potable water plumbing is installed with heat trace and insulated to protect against pipe freezing. - Page 8 Installing the water heater. System Parts ID List Storage Tank Solar Collector Collector Nut Collector Plug 3/4” Tail Plug 3/4” Union Collector Down Pipe 3/4” Union Nut 3/4” T/P Valve 18mm Union Cone 3/4” Check Valve (NOT INCLUDED) Lag Screw 3/4”...
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Page 9: Pre-Installation Review
Pre-Installation This section will guide you to gather the necessary information to install the system correctly. Use it together with the Installation Checklist to identify all installation requirements. These installation inspection procedures include; • Review of local building codes for site requirements and specific guidelines for plumbing and electrical installation. -
Page 10: System Requirements
Installing the water heater. System Placement Requirements The system must face between 135 - 225° (Ideal direction is true South): (Refer to the Figure on the right). Installations outside this range require either an additional collector or frame. Site must be shade-free year-round and clear of obstructions. -
Page 11: Pitch Requirements
Pitch Requirements Correct operation requires 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. -
Page 12: Roof Requirements
Installing the water heater. Roof Survey NOTICE: A roof in poor condition may need replacement before the system is installed. Roof Type All types except sturdy tiles and metal Sturdy tiles or metal roof with No obstruction of water flow All types All types All types... - Page 13 Conventional Roof Modifications Truss Frame Modifications Determine the correct truss frame modification using the figures shown below. 2” x 4” Top Chord 2” x 6” Top Chord 21” 32” 24” 36” 25” 38” 28” 42“ 28” 36” 30” 38” NOTICE: For truss spans >36”, use double 2” x 6” kicker. ¹...
- Page 14 Installing the water heater. Review the checklist for installation requirements. Check the following before beginning installation. Permits Obtain required permits before installation. Work 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 hardware, and all optional supplies before beginning installation.
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Page 15: Electrical Requirements
Electrical System Requirements NOTICE:All wiring must conform to local codes or the latest edition of National Electrical Code ANSI/NFPA 70. WARNING: Any wiring outside of the house should be rated for the appropriate weather conditions. If the system is being used as a pre-heater to an existing water heater, the electrical review and installation may not be required. -
Page 16: Typical Installation
Installing the water heater. A new combination temperature and pressure relief valve, complying with the Standard for Relief Valves and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22, is supplied and must be installed in the opening provided and marked for the purpose on the water heater. No valve of any type should be installed between the relief valve and the tank. -
Page 17: Plumbing Schematics
Plumbing System Schematic for Replacement of Existing Electric Water Heater Collector M = Mixing Valve T/P = Temperature & Pressure Relief Plumbing System Schematic for Installation of stand alone Water Heater M = Mixing Valve T/P = Temperature & Pressure Relief 3/4”... -
Page 18: Details For Roof Types
Installing the water heater. Plumbing System Schematic for Installation as Pre Heater M = Mixing Valve T/P = Temperature & Pressure Relief Types of Roof Installation This section contains instructions for correct installation of the system. Complete the procedures in the order listed. - Page 19 Roof Preparation This section contains instructions for correct installation of the system. Complete the procedures in the order listed. Refer to the checklist for necessary roof modifications on page 12. NOTICE: The storage tank will be Install supports for Fragile Tile Roof parallel to rafters The system may be installed directly on of trusses for side-...
- Page 20 Installing the water heater. Wood Runner Detail for 16” & 24” On-Center Rafters for Standard Installation Collector Extrusion Detail for Standard Installation CAUTION: The Extrusion must slope 1/2” per collector from horizontal (hot pipe side to be higher) for the system to work correctly.
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Page 21: Frame Installation
Collector Extrusion & Strap Installation Detail - Tile Roof CAUTION: Straps 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. - Page 22 Installing the water heater. Frame Installation continued... • Drill each runner in center and 6" from runner ends and screw to rafters or NOTICE: Allow trusses with 5/16" x 6" lag screws and room for “U” bracket pipe leg cradle on washers, frame.
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Page 23: Collector Installation
Collector Installation CAUTION: The Extrusion must slope 1/2” per collector from horizontal (hot pipe side to be higher) for the system to work correctly. 1. Set collectors in place, resting lower CAUTION: Do 2. Remove plugs from corners of the not damage Internal Collector Absorber with screws. -
Page 24: Tank Installation
Installing the water heater. Storage Tank Installation CAUTION: Do not damage internal collector absorber with screws. CAUTION: DO NOT install on a roof with a pitch beyond Tank Clamp 45°. CAUTION: If lifting tank to roof manually, use correct lifting techniques. -
Page 25: Plumbing Installation
6. Level the tank. CAUTION: If 7. Tighten the tank system in place. using teflon tape to seal T&P valve, make sure 8. Tighten hot pipe and downpipe the tape does not block connections. the water passage. 9. Install tee adapter (See figure at right). -
Page 26: Stub Outs
(R) 3/4" Relief Line NOTICE: Ensure the (H) Hot Supply to House plumbing is installed (C) 3/4" Cold Supply to Rheem to allow for the thermosiphon tank removal of the storage tank end • NOTICE: Mixing valves should be... -
Page 27: Filling The Closed Loop
Test and Fill the Closed Loop Closed Loop Fluid The closed loop must WARNING: be filled ONLY with Hartgard solution Under no and potable water. circumstances can Each system closed loop is to be filled any fluid other with one bottle of Hartgard and the than Hartgard be balance potable water. - Page 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 Test Block. • When the pressure is zero, tighten the PR6 Jacket Relief Valve.
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Page 29: Connect Electric Supply
Connect Storage Tank to Electrical Supply • Use only a utility supply having a maximum of 240 volt, 1 phase, 60Hz, CAUTION: power supply. To reduce the risk of electric WARNING: Turn off all power to shock or fire avoid injury. follow local •... -
Page 30: Operating Instructions
Operating the water heater. Installation Checklist CAUTION: Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a long period of time (generally two weeks or more). HYDROGEN GAS IS EXTREMELY FLAMMABLE!! To dissipate such gas and to reduce risk of injury, it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system. -
Page 31: Water Temperature
Water Temperature Setting The temperature of the water in the DANGER: There is a water heater can be regulated by hot water scald potential if setting the temperature dial of the the thermostat is set too adjustable surface mounted thermostat high. -
Page 32: Draining
Care and cleaning of the water heater. Draining the Water Heater CAUTION: Before water heater before draining water. draining the thermosiphon tank, the pressure on the operating the relief valve, make certain closed loop must be no one will be exposed to the hot water relieved or the loop may released by the valve. -
Page 33: Extended Shut-Down
Care and cleaning of the water heater. Vacation and Extended Shut-Down NOTICE: Refer to the Once your system has been installed Hydrogen Gas Caution and tested by the technician, it in the Operating operates automatically and requires Instructions. little attention. However, there are several precautions you should be aware of to ensure your complete satisfaction with the system, and some... -
Page 34: Troubleshooting Tips
Before You Call For Service… Troubleshooting Tips Save time and money! Review the chart on this page first and you may not need to call for service. Problem Possible Causes Not enough Hot Water Solar circuit breaker tripped or fuse blown Safety Thermostat tripped or malfunctioned Faulty Backup Heating... - Page 35 Troubleshooting Tips Save time and money! Review the chart on this page first and you may not need to call for service. Problem Possible Causes No Hot Water Hot water tempering valve fouled Pressure imbalance (over 5 psi) Locate and repair cause of imbalance. between hot and cold water lines Fouled pressure regulator valve Repair/replace as necessary Cold water line blocked...
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Page 36: Customer Service Frames Information
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 pitch installations only. - Page 37 Frames continued... Side Pitch Installations (Tile 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.
- Page 38 Against Pitch Installations (Tiled 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.
- Page 39 Frames continued... Variations 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°. Flashing and Roof Penetrations Flashing of roof penetrations must meet the requirements of the local authorities.
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Page 40: If You Need Service
List of people, with dates, who have been contacted regarding your problem. If you need a manual in Spanish, please refer to our website: www.rheem.com. Si requiere de un manual de uso y cuidado en espanol, Usted puede obtanerlo en www.rheem.com.