Bradford White BWCH Operations Instructions download pdf (Page 15)

Page 15

COPPER BRUTE II (500 - 2000)

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

SYSTEM PUMP

MAKE-UP

COLD WATER

SUPPLY

SYSTEM

PUMP LOCATION FOR

NON-PUMP-MOUNTED UNITS

RETURN

SYSTEM

SUPPLY WHEN USING THIS PIPING STYLE.

MINIMUM BOILER INLET WATER TEMPERATURE

MUST BE AT LEAST 120°F.

LEGEND

CHECK VALVE

THERMOMETER

TEMPERATURE

SENSOR

GLOBE VALVE

EXPANSION TANK

WITH AIR SCOOP AND

AUTO AIR VENT

3-WAY VALVE

VALVE

CAUTION: THIS DRAWING SHOWS SUGGESTED

PIPING CONFIGURATION AND VALVING, CHECK

WITH LOCAL CODES AND ORDINANCES FOR

ADDITIONAL REQUIREMENTS.

PRESSURE REDUCING VALVE

W/ FAST FILL BYPASS

PURGE

VALVE

PUMP

Figure 4. Hydronic Piping — Multiple Boilers, Primary Secondary System.

precautions are made for freeze protection. A non

toxic, heating system, anti-freeze may be added to

the hydronic system provided that the concentration

does not exceed 50% and the anti freeze contains an

anti foamant. When a 50/50 mixture is used, increase

the water ow requirements by 15%, and increase the

headloss requirements by 20%.

Power outage, interruption of gas supply, failure

of system components, activation of safety devices,

etc., may prevent a boiler from ring. Any time a

boiler is subjected to freezing conditions, and the

boiler is not able to re, and/or the water is not able

to circulate, there is a risk of freezing in the boiler

or in the pipes in the system. When water freezes,

it expands. This can result in bursting of pipes in the

system, or damage to the boiler, which could result in

leaking or ooding conditions.

IMPORTANT NOTES: Different glycol products

may provide varying degrees of protection. Glycol

products must be maintained properly in a heating

system, or they may become ineffective. Consult the

glycol specications, or the glycol manufacturer, for

information about specic products, maintenance

of solutions, and set up according to your particular

conditions.

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Bradford White BWCH Operations Instructions Page 15

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