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Buderus GB142 Applications Manual
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Buderus GB142 Applications Manual

Wall hung heater
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Applications Manual for
Buderus GB142 Wall Hung Heaters
BTC 435001101 A | 05.2009

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Summary of Contents for Buderus GB142

  • Page 1 Applications Manual for Buderus GB142 Wall Hung Heaters BTC 435001101 A | 05.2009...
  • Page 3 GB142 with DHW zone, Comfort Zone and zone valves GB142 with DHW zone, Indoor reset, Buderus Pumping Station and zone valves GB142 with DHW zone, single temperature of radiant. No Mixing Valve required GB142 with DHW zone, motorize mixing valve zone, thermostatic mixing valves zone and high temperature zone.
  • Page 5 1 INTRODUCTION 2 DESCRIPTION OF MAIN COMPONENTS This GB142 Applications Manual is intended to present some of the most common applications of the wall-hung Buderus GB142 heater for use in hot water space heating applications. Applications are shown with both piping and corresponding electrical schematics. Auxiliary equipment depicted does not necessarily represent any one particular manufacturer or specific model number.
  • Page 6 PIPED MANIFOLD AND ETTINGS All GB142 are standard supplied with a pre-piped and wired heater manifold with pump to easily facilitate required primary/secondary piping for the installing contractor. Shut-offs, relief valve, pressure and temperature gauge, purge station on the supply leg and built-in flow check and a Grundfos UPS15-58 3-speed heater pump are included on the return side of the manifold.
  • Page 7 GB142 heater. Tank pumps are placed in parallel with each tank having its own pump. The GB142 DHW sensor is placed in one tank; a high limit aquastat is to be installed in other tanks and wired in series with the pump power to prevent over heating. Domestic water must be drawn equally from the tanks.

  • Page 8: Space Heating Operation

    RC10 R ONTROLLER A RC10 room controller is provided with every GB142 to provide indoor reset and pin point precision control back to the BC10. The RC10 must be installed in a reference location for indoor feedback to the GB142. The RC10 will control the modulation and heater water temperature based on maintaining desired indoor comfort levels.
  • Page 9 3 DIMENSIONS, CONNECTIONS AND CLEARANCES 3 DIMENSIONS, CONNECTIONS and CLEARANCES Fig. 1: Dimensions and Connections for GB142/24 and /30. Fig. 2: Dimensions and Connections for GB142/45 and /60. Page 5...

  • Page 10: Venting Guidelines

    ENTING UIDELINES The GB142 is suitable for side-wall as well as vertical venting using field supplied 3” PVC or CPVC pipe in compliance with ANSI, ASTM D1785 (schedule 40 PVC), F441, D2665 (PVC- DWV), or ABS-DWV Schedule 40. Cement and primer must comply with ASTM D2564. For Foam core PVC Canada, use CSA or ULC certified PVC or CPVC pipe, fittings and cement.
  • Page 11 Fig. 3A 12" minimum 12" 12" minimum minimum Fig 3B Page 7...
  • Page 12 & D IRECT EALED OMBUSTION IRECT EALED OMBUSTION TERMINATION UIDELINES WARNING: Follow these instructions when determining vent termination location to avoid possibility of severe personal injury, death, substantial property damage or cross contamination of combustion air. Gas vent extending through an exterior wall shall not terminate adjacent to the wall or below building extensions such as eaves, parapets, balconies or decks.
  • Page 13 10. Operate heater through one complete cycle and check for flue gas leakage. 11. Refer to fig. 6 for multiple “Through the roof” installations and maintain a 12” center-to- center distance. * Buderus Part Number: BRYKGAVT0602CVT Page 9...
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  • Page 15 ENETRATION CONCENTRIC FIG. 3A & 7 1. Determine best location for vent/air termination using previous guidelines ( 2. Cut a 5” hole to accommodate the 4½” diameter PVC pipe. 3. Cement termination concentric Y to 4½” diameter PVC pipe, then pass through wall penetration and field supplied flashing if required.
  • Page 16 HROUGH THE ENETRATION CONCENTRIC 1. Determine best location for vent/air termination using previous guidelines. 2. Air pipe penetration – Cut a hole for the air pipe. Size the air pipe hole as close as desired to the air pipe outside diameter. 3.

  • Page 17: Heater Installation

    ERMINATION AND FITTING 1. Prepare the vent termination coupling and the air termination elbow by inserting the bird screens provided with boiler into the three inch fittings. 2. The combustion air inlet shall terminate at least 12 inches above maximum snow line or 24 inches above roof surface which ever is greater.
  • Page 18 ENETRATION CONCENTRIC 1. Determine best location for vent/air termination using previous guidelines. 2. Cut a 4” hole to accommodate the 3½” diameter PVC pipe. Through the wall penetration may be sealed with a field provided flashing if required. 3. Insert bird screens provided with heater into both exhaust and combustion air (field supplied) elbows.
  • Page 19 Multiple Heater installation – Terminate all exhaust vents at the same height and all combustion air inlets at the same height, while maintaining the minimum 12 inches vertical height clearance from between exhaust and combustion air inlet. Exhaust vent termination edge shall be at least 12 inches laterally from the edge of the air inlet pipe of an adjacent heater.

  • Page 20: Condensate Piping

    ¾” branch pointing down to drain condensate. Install furnished 1-1/2” x ¾” coupling under GB142 condensate drain, install a ¾” PVC tee and bring in upper vent drain with a trap into this tee.
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  • Page 48 Bosch Thermotechnology Corp. 50 Wentworth Avenue Londonderry, NH 03053 Tel: 1-800-BUDERUS Fax: 1-603-584-1681 www.buderus.net Bosch Thermotechnology Corp., reserves the right to make changes without notice due to continuing engineering and technological advances...