Bosch SM070 Specifications download pdf (Page 37)

100

Heat Recovery Package | 37SM Series Heat Pump

6 720 220 406 (2013/9)Revised 08-13

HEAT RECOVERY PACKAGE

Water Tank Preparation

1. Turn off electrical or fuel supply to the water

heater.

2. Attach garden hose to water tank drain

connection and run other end of hose out

doors or to an open drain.

3. Close cold water inlet valve to water heater

tank.

4. Drain tank by opening drain valve on the

bottom of the tank, then open pressure relief

valve or hot water faucet.

5. Once drained the tank should be flushed with

cold water until the water leaving the drain

hose is clear and free of sediment.

6. Close all valves and remove the drain hose.

7. Install HR water piping.

HR Water Piping

All hot water piping MUST be a minimum of 3/8t

O.D. copper tube to a maximum distance of fifteen

(15) feet. For distances beyond fifteen feet but not

exceeding sixty (60) feet use 1/2” copper tube.

Separately insulate all exposed surface of both

connecting water lines with 3/8” wall closed cell

insulation. Install isolation valves on supply and

return to the heat recovery. (Figure #101)

Figure # 101

Water Tank Refill

1. Open the cold water supply to the tank.

2. Open a hot water faucet to vent air from the

system until water flows from the faucet, then

close.

3. Depress the hot water tank pressure relief

valve handle to ensure there is no air remaining

in the tank.

4. Carefully inspect all plumbing for water leaks.

Correct as required.

5. Purge all air from HR by depressing the

schrader valve on the HR Unit. Allow all air to

bleed out until water appears at the valve.

Concentric water fitting (p/n 520-105) is

recommended.

Hot

Water

Supply

Cold

Water

Supply

T/P Valve

Water Out

Retrun from HRP

Isolation Valves

Concentric Fitting

Part #520105

Tank Drain Valve

Water In

Supply to HRP

Drain Valve

(Optional)

NOTE: Diagram for illustration purposes only.

Ensure access to Heat Pump is not restricted.

All piping from HRP to domestic water tank

must be copper or any metal of stronger

alloy.

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Bosch SM070 Specifications Page 37

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