Bradford-White Corp BWCH, BWCV warranty Boiler CIRC. Pump Sized for Flow Through Boiler

COPPER BRUTE II (500 - 2000) Page 19

SYSTEM

RETURN

C

B

A

PUMP LOCATION FOR

NON-PUMP-MOUNTED UNITS

T1

COLD WATER

MAKE-UP

	SYSTEM
SYSTEM PUMP	SUPPLY

ADJUSTMENT PROCEDURE TO MAINTAIN

B 120°F INLET TEMP:

A1. Turn on boiler and open valves A & B.

2.After steady-state operation, if T1 is less than 120°F, slowly close valve B until T1 climbs to 120°F.

3.If T1 is greater than 120°F, slowly close valve A until T1 drops to 120°F.

4.Check after system operating temperature has stabilized. Make final adjustments.

T1

CAUTION: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND VALVING, CHECK			PUMP LOCATION FOR PUMP-MOUNTED UNITS
WITH LOCAL CODES AND ORDINANCES FOR
ADDITIONAL REQUIREMENTS.				PRIMARY/SECONDARY MANDITORY FOR ALL
				VARIABLE FLOW SYSTEMS
LEGEND				INSTALL AIR VENTS AT HIGH POINTS IN SYSTEM
				PIPING & SIZING OF EXPANSION TANK
THERMOMETER		EXPANSION TANK		PER TANK MANUFACTURER'S INSTRUCTIONS
		WITH AIR SCOOP AND		DIMENSION "C" (COMMON PIPING) TO BE FOUR
		AUTO AIR VENT		PIPE DIAMETERS, MAX. (NO ELBOWS OR VALVES)
	PURGE
TEMPERATURE
	VALVE			BOILER CIRCUIT PIPING MUST BE EQUAL
SENSOR
				TO BOILER WATER CONNECTION SIZE
GLOBE VALVE		3-WAY VALVE		BOILER CIRC. PUMP SIZED FOR FLOW THROUGH BOILER
CHECK VALVE		VALVE		DOTTED DEVICES INDICATE ALTERNATE LOCATIONS
				PUT BOILER CONTROL SENSOR IN THE SYSTEM
PRESSURE REDUCING VALVE				SUPPLY WHEN USING THIS PIPING STYLE.
W/ FAST FILL BYPASS		PUMP		MINIMUM BOILER INLET WATER TEMPERATURE

MUST BE AT LEAST 120°F.

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