Bosch SM070 Specifications download pdf (Page 42)

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42 | Application Considerations SM Series Heat Pump

SM Series Heat Pump6 720 220 406 (2013/9) Subject to change without prior notice

open cooling tower may also be used. It is

imperative that all air be eliminated from the

closed loop side of the heat exchanger to insure

against fouling. In the heating mode, heat is

absorbed from the water loop. A boiler can be

utilized to maintain the loop at the desired

temperature.

Consult the specification sheets for piping sizes.

Do not overtighten the connections. Flexible hoses

should be used between the unit and the rigid

system to avoid possible vibration.

Ball valves should be installed in the supply and

return lines for unit isolation and unit water flow

balancing. Pressure/temperature ports are

recommended in both supply and return lines for

system flow balancing. Water flow can be

accurately set by measuring the water-to-

refrigerant heat exchangers water side pressure

drop. See specification sheets for water flow vs.

pressure drop information.

No unit should be connected to the supply or

return piping until the water system has been

completely cleaned and flushed to remove any dirt,

piping chips or other foreign material. Supply and

return hoses should be connected together during

this process to ensure the entire system is

properly flushed. After the cleaning and flushing

has taken place the unit may be connected to the

water loop and should have all valves wide open.

(Figure #104)

Figure # 104

[1] Line voltage disconnect (unit)

[2] Low voltage control connection

[3] P/T ports (optional)

[4] Hose kits (optional)

[5] Ball valves

[6] Supply and return line of central system

[7] Flex duct connection

[8] Hanging bracket assembly

[9] Threaded rod

[10] Hanging bracket assembly

Water piping exposed to extreme low

ambient temperatures is subject to

freezing.

Teflon tape sealer should be used when

connecting to the unit to insure against leaks

and possible heat exchanger fouling.

Diagram shows typical

installation and is for

illustration purposes only.

Ensure access to Heat

Pump is not restricted.

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Bosch SM070 Specifications Page 42

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