BHSGB142-AM 01/05 Applications Manual for Buderus GB142 Wall Hung Heaters
Table of Contents 1 Introduction 2 Description of Main Components Pre-piped Manifold and Pump Settings Pump Sizing for Buderus Indirect Tanks BC10 Controller RC10 Room Controller Space Heating Options DHW Heating Operation 3 5 2 2 4 4 4 4 Description of Operation Dimensions and Connections Space Heating Domestic Hot Water Heating 4 1 5 6 6 Venting Guidelines 7 Horizontal Venting Vertical Venting Condensate Piping 8 9 16 Piping and Wiring Applications Mechanical / Electrical Symbols GB142 with
1 INTRODUCTION 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.
2 DESCRIPTION OF MAIN COMPONENTS PRE-PIPED MANIFOLD AND PUMP SETTINGS 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. (Refer to Diagram 1P).
Table 3: Indirect Pump Recommendations for GB142/45 and /60 models.
The low voltage side is equipped with the following terminals: 1) RC terminals (orange color) for an indoor room sensor for firing and modulating the burner. (RC10 control standard supplied with GB142). 2) FA optional outdoor sensor terminals (blue color) connections (requires RC34 controller; available Fall 2005). 3) WA T-T terminals (light green color) connections for optional conventional thermostat. 4) FW DHW tank sensor terminals (light gray color) for sensing tank water temperature.
3 DIMENSIONS, CONNECTIONS AND and CLEARANCES CLEARANCES Fig. 1: Dimensions and Connections for GB142/24 and /30. Fig. 2: Dimensions and Connections for GB142/45 and /60. Version 1.
4 VENTING GUIDELINES VENTING GUIDELINES 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 or D2665 (PVCDWV). Cement and primer must comply with ASTM D2564. For Canada, use CSA or ULC certified PVC or CPVC pipe, fittings and cement. Foam core PVC pipe can not be used. Note: Installation must comply with local requirements/codes, National Fuel Gas Code, ANZI Z223.1 (USA installations) CSA B149.
Fig. 3A 12" minimum 12" minimum 12" minimum Fig 3B Version 1.
DIRECT VENT/SEALED COMBUSTION & DIRECT VENT/NON-SEALED COMBUSTION TERMINATION GUIDELINES 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.
EXHAUST AND INTAKE AIR PLACEMENT THROUGH THE ROOF PENETRATION — CONCENTRIC*: 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 roof penetration and field supplied roof boot/flashing. 4. Secure assembly to roof structure with field supplied metal strapping or equivalent support material. 5.
Page 10 Version 1.
SIDE-WALL PENETRATION (CONCENTRIC) 1. Determine best location for vent/air termination using previous guidelines (FIG. 3A & 7). 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. 4. Insert smaller 2½” PVC vent exhaust pipe into larger 4½” diameter combustion air pipe ensuring PVC exhaust vent pipe is properly cement into concentric Y. 5.
THROUGH THE ROOF PENETRATION (NON-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. Vent pipe penetration – Cut a hole for the vent pipe. Size the vent pipe hole as close as desired to the vent pipe outside diameter. 4. Space the air and vent holes to provide the minimum spacing (see FIG. 8). 5.
TERMINATION 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. 3. The combustion air inlet pipe must terminate in a downward position using two 90 degree elbows.
SIDE-WALL PENETRATION (NON-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. 4. Combustion air inlet elbow should always be positioned downward. 5.
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. The combustion air inlet is part of the direct vent system and not classified as a forced air inlet. Version 1.
CONDENSATE PIPING Figure 10 shows a typical sealed combustion installation. • The furnished 3” x ¾” socket female vent condensate drain must be installed as close as possible to the exhaust connection with the ¾” branch pointing down to drain condensate. • Install furnished 1-1/2” x ¾” coupling under GB142 condensate drain, install a ¾” PVV tee and bring in upper vent drain with a trap into this tee. • Pour 1 qt.
5 DRAWINGS Version 1.
Drawing #GB142-1P Baseboard Buderus Hydronic Systems GB 142, with DHW zone and indoor reset. exhaust Purge stations required.
Low Voltage RC 10/20 Outdoor sensor T T Connection DHW Sensor Safety Limit Orange Blue Lt Green Lt Gray Red RC FA WA FW EV 1 2 1 2 1 2 120Vac/10Amp Max 5 Amp Max 1 2 1 Green PK 61 Grey PS 63 24 lilac PZ 25 13 White Power Input 14 N L 2 Service switch Dedicated 15 Amp Circuit 120Vac 2 Factory Installed Jumper Netural PK PZ DHW Tank Sensor Boiler loop circulator P1 PS Optional DHW Recirc Circulator 2 R Heating loop circulator No connection required when using
Drawing # GB142-2P Baseboard Buderus Hydronic Systems GB 142, with DHW zone and on/off heating zone. exhaust Purge stations required. intake Written by JHK Approved by EFS 7/09/04 Supply Return Condensate Drain Control Panel Purge Station Gas Connection ¾” P1 PS P&T Gauge PK Purge Station Purge Station Buderus Indirect water heater Note: This drawing is conceptual in nature and does not purport to address all design, installation or safety considerations.
RC 10/20 Outdoor sensor TT Connection DHW Sensor Safety Limit Orange Blue Lt Green Lt Gray Red RC 1 FA 2 1 WA 2 1 FW 2 120Vac/10Amp Max 5 Amp Max Low Voltage 1 Green PK EV 2 1 61 Grey PS 63 24 lilac PZ 25 13 Dedicated 15 Amp Circuit White Power Input 14 N L 2 Service switch 1 3 Factory Installed Jumper DHW Tank Sensor 120Vac Netural PK PS Boiler loop circulator DHW Circulator 1 Thermostat 3 Optional DHW Recirc circulator For optional RC10/20 .
Drawing #GB142-3P Buderus Hydronic Systems GB 142, with DHW zone, Comfort Zone and zone valves.
Low Voltage Comfort Zone Control RC 10/20 Outdoor sensor TT Connection DHW Sensor Safety Limit Orange Blue Lt Green Lt Gray Red RC FA WA FW EV 1 R 2 1 2 1 2 120Vac/10Amp Max 5 Amp Max 1 2 1 Green PK 61 2 Grey PS 63 24 lilac PZ 25 White Power Input 13 14 N L 1 2 Factory Installed Jumper C DHW Tank Sensor RC 10/20 Room Sensor 120Vac PK Netural Boiler loop circulator P1 PS 1 T Stat T Stat Service switch Dedicated 15 Amp Circuit Heating loop circulator T St
Drawing #GB142-4P Buderus Hydronic Systems GB 142, with DHW, Indoor reset (RC10/20) with Buderus Pumping Station and zone valves. Radiation Purge stations required.
RC 10/20 Outdoor sensor TT Connection DHW Sensor Safety Limit Orange Blue Lt Green Lt Gray Red RC 1 FA 2 1 WA 2 1 FW 2 120Vac/10Amp Max 5 Amp Max Low Voltage 1 Green PK EV 2 1 61 Grey PS 63 24 lilac PZ 25 White Power Input 13 14 N L 2 Service switch Dedicated 15 Amp Circuit 1 2 120Vac PK Factory Installed Jumper Comfort Zone Control Netural R DHW Tank Sensor C Boiler loop circulator BPS1 PS RC 10/20 Room Sensor Heating loop circulator T Stat T Stat DHW Circu
Drawing # GB142-5P Buderus Hydronic Systems exhaust GB 142, with DHW zone single temperature of radiant. no mixing valve required. “Space Heating” high limit on GB142 should be set to maximum zone temperature. intake Purge stations required.
RC 10/20 Outdoor sensor T T Connection DHW Sensor Safety Limit Orange Blue Lt Green Lt Gray Red RC 1 FA 2 1 WA 2 1 120Vac/10Amp Max 5 Amp Max Low Voltage FW 2 1 Green PK EV 2 1 61 Grey PS 63 24 lilac PZ 25 13 White Power Input 14 N L 2 Service switch Dedicated 15 Amp Circuit 1 120Vac 2 R Netural PK PS Boiler loop circulator DHW Circulator C RC 10/20 Room Sensor DHW Tank Sensor P1 Heating loop circulator 1 Optional DHW Recirc circulator 2 No connection requir
GB Drawing #142-6P Buderus Hydronic Systems Baseboard exhaust GB 142, with DHW zone, motorized (TC-62 motor) mixing valve zone, thermostatic (manual) mixing valve zone and high temperature zone. intake Purge stations required.
RC 10/20 Outdoor sensor T T Connection DHW Sensor Safety Limit Orange Blue Lt Green Lt Gray Red RC FA WA FW EV 1 2 1 2 1 2 120Vac/10Amp Max 5 Amp Max Low Voltage 1 2 1 Green PK 61 Grey PS 63 24 lilac PZ 25 13 White Power Input 14 N L 2 Service switch Dedicated 15 Amp Circuit 1 3 Factory Installed Jumper 120Vac Netural PK PS Boiler loop circulator DHW Circulator DHW Tank Sensor T Stat T Stat Zone 1 X X Zone 1 Zone 2 Zone 2 T Stat 1 Optional DHW Recirc c
Drawing #GB142-7P Buderus Hydronic Systems GB 142, with DHW zone and high temperature on/off heating zones. exhaust intake Baseboard Purge stations required.
RC 10/20 Outdoor sensor T T Connection DHW Sensor Safety Limit Orange Blue Lt Green Lt Gray Red RC FA WA FW EV 1 2 1 2 1 2 120Vac/10Amp Max 5 Amp Max Low Voltage 1 2 1 Green PK 61 Grey PS 63 24 lilac PZ 25 White Power Input 13 14 N L 2 Service switch Dedicated 15 Amp Circuit 1 120Vac 3 Factory Installed Jumper Netural PK PS Boiler loop circulator DHW Circulator DHW Tank Sensor T Stat T Stat Zone 1 X X Zone 2 Zone 1 Zone 2 T Stat 1 Optional DHW Recirc
Drawing #GB142-8P Buderus Hydronic Systems GB 142 with DHW zone, constant circulation with Comfort Zone Control. Buderus Panel Radiators with Thermostatic Heads exhaust intake Thermostatic heads on each Panel Radiator for individual control. Pressure by-pass valve required. Purge stations required.
Low Voltage RC 10/20 Outdoor sensor T T Connection DHW Sensor Safety Limit Orange Blue Lt Green Lt Gray Red RC FA WA FW EV 1 2 1 2 1 2 120Vac/10Amp Max 5 Amp Max 1 2 1 Green PK 61 Grey PS 63 24 lilac PZ 25 White Power Input 13 14 N L 2 Service switch Dedicated 15 Amp Circuit 120Vac Comfort Zone Control Factory Installed Jumper Netural PK PZ R DHW Tank Sensor C Boiler loop circulator Optional DHW Recirc Circulator P1 PS Heating loop circulator DHW Circulator
Drawing #GB142-9P Buderus Hydronic Systems Baseboard GB 142 with DHW zone and the Buderus Quick Fit Modular Piping System. exhaust intake Purge stations required.
RC 10/20 Outdoor sensor T T Connection DHW Sensor Safety Limit Orange Blue Lt Green Lt Gray Red RC 1 FA 2 1 WA 2 1 FW 2 120Vac/10Amp Max 5 Amp Max Low Voltage 1 Green PK EV 2 1 61 Grey PS 63 24 lilac PZ 25 13 White Power Input 14 N L 2 Service switch Dedicated 15 Amp Circuit 1 3 Factory Installed Jumper 120Vac Netural PK PS Boiler loop circulator DHW Circulator DHW Tank Sensor T Stat Zone 1 X X T Stat Zone 2 Zone 1 Zone 2 T Stat 1 Optional DHW Recirc circu
Buderus Hydronic Systems 50 Wentworth Avenue Londonderry, NH 03053 Tel: 603-552-1100 • Fax: 603-421-2719 www.buderus.
