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HTP SSU-10DB Installation, Operation, Maintenance, & Troubleshooting

Drain back tank
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Drain Back Tank
INSTALLATION
OPERATION
MAINTENANCE
TROUBLESHOOTING
Models*
SSU-10DB / 15DB / 20DB / 30DB
40DB / 60DB / 80DB
SSU-10DBX / 15DBX / 20DBX
40DBX / 60DBX / 80DBX
*"X" following the model number denotes models with internal heat exchanger
This manual must only be used by a qualified heating installer/service technician. Read all instructions in this manual before installing.
Perform steps in the order given. Failure to comply could result in substantial property damage, severe personal injury, or death.
NOTICE: HTP reserves the right to make product changes or updates without notice and will not be held liable for typographical errors
in literature.
NOTE TO CONSUMER: PLEASE KEEP ALL INSTRUCTIONS FOR FUTURE REFERENCE.
120 Braley Rd. P.O. Box 429
East Freetown, MA 02717-0429
www.htproducts.com
LP- 351b REV. 2.3.14

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Summary of Contents for HTP SSU-10DB

  • Page 1 Perform steps in the order given. Failure to comply could result in substantial property damage, severe personal injury, or death. NOTICE: HTP reserves the right to make product changes or updates without notice and will not be held liable for typographical errors in literature.
  • Page 2 The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the product. DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

  • Page 3: Table Of Contents

    B. OTHER PROBLEMS ................................16 INSTALLATION AND MAINTENANCE NOTES ..........................16 HTP CUSTOMER INSTALLATION RECORD FORM ........................17 INTRODUCTION Drain back tanks are designed to allow solar collectors and related piping to drain heat transfer fluid into the drain back reservoir when not in use.

  • Page 4: Part 1 - General Safety Information

    NOTE: HTP DOES NOT WARRANT THE DRAIN BACK TANK AGAINST FREEZE RELATED DAMAGE. ALL PIPING AND PLUMBING CONNECTIONS SHOULD BE MADE WITH COPPER PIPE ONLY. No less than ¾” I.D. copper tube of the type meeting local codes must be used for piping.

  • Page 5: Local Installation Regulation

    B. LOCAL INSTALLATION REGULATION Installation of this solar water heater may be governed by individual local rules and regulations for this type of product, which must be observed. Always use the latest edition of codes. The installation, adjustment, service, and maintenance of the solar water heater must be done by a licensed professional who is qualified and experienced in the installation, service, and maintenance of solar hot water systems.

  • Page 6: Part 2 - General Information

    Failure of the solar system due to freeze related damage IS NOT covered by warranty. In order to meet health and safety regulations, solar system antifreeze fluid should be food grade polypropylene glycol, FDA rated as “generally recognized as safe” (GRAS). The recommended glycol is DOWFROST or equivalent. Using proper concentrations of glycol, solar systems can be operated at ambient temperatures as low as -60 F.

  • Page 7: Part 3 - Specifications

    PART 3 - SPECIFICATIONS Figure 1 – Drain Back Tank Specifications and Dimensions LP- 351b REV. 2.3.14...
  • Page 8 Figure 2 – Drain Back Tank Specifications and Dimensions LP- 351b REV. 2.3.14...

  • Page 9: Part 4 - Installation

    PART 4 - INSTALLATION A. DRAIN BACK TANK LOCATION To minimize expense and heat loss, locate the drain back tank as centrally to the solar tank and near the solar collectors as possible. The tank must also be located in as warm a location as possible, away from areas which would subject the drain back reservoir to freezing temperatures.

  • Page 10: Drain Back Tanks Without Heat Exchangers

    1. DRAIN BACK TANKS WITHOUT HEAT EXCHANGERS a. Pipe solar collector return to the inlet fitting located on the top of the drain back tank. b. Pipe drain back tank outlet (located near the bottom of the tank) to the solar heat exchanger inlet. c.

  • Page 11: Drain Back Tank With Back Up Gas Water Heater Detail

    F. DRAIN BACK TANK WITH BACK UP GAS WATER HEATER DETAIL Figure 4 – Drain Back System with Gas Back Up FIGURE NOTES: 1. This drawing is meant to demonstrate system piping concept only. The installer is responsible for all equipment and detailing by local codes.

  • Page 12: Drain Back Tank With Boiler And Indirect Water Heater Detail

    G. DRAIN BACK TANK WITH BOILER AND INDIRECT WATER HEATER DETAIL Figure 5 – Drain Back System with Boiler Back Up FIGURE NOTES: 1. This drawing is meant to demonstrate system piping concept only. The installer is responsible for all equipment and detailing by local codes. 2.

  • Page 13: Drain Back Tank With Heat Exchanger

    H. DRAIN BACK TANK WITH HEAT EXCHANGER Figure 6 – Drain Back System with Heat Exchanger FIGURE NOTES: 1. This drawing is meant to demonstrate system piping concept only. The installer is responsible for all equipment and detailing by local codes.

  • Page 14: Part 5 - Fluid Quality

    If using a glycol/water mix, the water must meet the above requirements, and the glycol content of the liquid must not exceed 50%, unless the manufacture specifies that a different ratio is recommended for use with solar water heaters. HTP recommends using a pre- blended solution.

  • Page 15: Part 7 - Starting Your Drain Back System

    PART 7 - STARTING YOUR DRAIN BACK SYSTEM NOTE: DO NOT MOVE ON TO THESE STEPS UNTIL THE ENTIRE SOLAR SYSTEM, INCLUDING ALL PIPING, SOLAR COLLECTORS, SENSORS, PUMPS, CONTROLS, AND ELECTRICAL CONNECTIONS, ARE PROPERLY SECURED, INSULATED, LABELED, AND INSTALLED. A. FILL THE DRAIN BACK RESERVOIR 1.

  • Page 16: Part 9 - Troubleshooting

    PART 9 - TROUBLESHOOTING Owners are advised to contact the installer whenever in-depth interaction with the solar system is required. A. LEAKS For leaks in the solar system piping, shut down the system by pulling the plug on the solar controller and call a plumber. B.

  • Page 17: Htp Customer Installation Record Form

    HTP CUSTOMER INSTALLATION RECORD FORM The following form should be completed by the installer for you to keep as a record of the installation in case of a warranty claim. After reading the important notes at the bottom of the page, please also sign this document.

This manual is also suitable for:

Ssu-15dbSsu-20dbSsu-30db 40dbSsu-60dbSsu-80dbSsu-10dbx ... Show all

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