Bradford White BWCH Operations Instructions download pdf (Page 19)

Page 19

COPPER BRUTE II (500 - 2000)

LEGEND

CHECK VALVE

THERMOMETER

TEMPERATURE

SENSOR

GLOBE VALVE

EXPANSION TANK

WITH AIR SCOOP AND

AUTO AIR VENT

3-WAY VALVE

VALVE

PRESSURE REDUCING VALVE

W/ FAST FILL BYPASS

PURGE

VALVE

PUMP

CAUTION: THIS DRAWING SHOWS SUGGESTED

PIPING CONFIGURATION AND VALVING, CHECK

WITH LOCAL CODES AND ORDINANCES FOR

ADDITIONAL REQUIREMENTS.

PRIMARY/SECONDARY MANDITORY FOR ALL

VARIABLE FLOW SYSTEMS

INSTALL AIR VENTS AT HIGH POINTS IN SYSTEM

PIPING & SIZING OF EXPANSION TANK

PER TANK MANUFACTURER'S INSTRUCTIONS

DIMENSION "C" (COMMON PIPING) TO BE FOUR

PIPE DIAMETERS, MAX. (NO ELBOWS OR VALVES)

BOILER CIRCUIT PIPING MUST BE EQUAL

TO BOILER WATER CONNECTION SIZE

BOILER CIRC. PUMP SIZED FOR FLOW THROUGH BOILER

DOTTED DEVICES INDICATE ALTERNATE LOCATIONS

PUT BOILER CONTROL SENSOR IN THE SYSTEM

PUMP LOCATION FOR PUMP-MOUNTED UNITS

SUPPLY WHEN USING THIS PIPING STYLE.

MINIMUM BOILER INLET WATER TEMPERATURE

MUST BE AT LEAST 120°F.

SYSTEM PUMP

MAKE-UP

COLD WATER

SUPPLY

SYSTEM

PUMP LOCATION FOR

NON-PUMP-MOUNTED UNITS

RETURN

SYSTEM

T1 T1

ADJUSTMENT PROCEDURE TO MAINTAIN

120°F INLET TEMP:

1. Turn on boiler and open valves A&B.

2. After steady-state operation, if T1 is less than

120°F, slowly close valveBuntil T1 climbs to

120°F.

3. If T1 is greater than 120°F, slowly close valve

A until T1 dropsto 120°F.

4. Check after system operating temperature has

stabilized. Make final adjustments.

Figure 8. Hydronic Piping - Primary-Secondary, Reverse-Return, Low Temperature.

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Bradford White BWCH Operations Instructions Page 19

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