Initial Start-Up - Bosch GreenSource SM024 Installation And Maintenance Manual

SM Series Heat Pump
6. Before restoring the power or fuel supply to
the water heater, adjust the temperature
setting on the tank thermostat(s) to ensure
maximum utilization of the heat available from
the refrigeration system and conserve the most
energy. On tanks with both upper and lower
elements and thermostats, the lower element
should be turned down to 100° F, while the
upper element should be adjusted to 120° F.
Depending upon the specific needs of the
customer, you may need to adjust the upper
element differently. On tanks with a single
thermostat lower the thermostat setting to
120° F or the "LOW" position. After thermostat
adjustments are completed, replace access
cover and restore electrical or fuel supply to
water heater.

Initial Start-Up

Make sure all valves in heat recovery water
piping system are open. NEVER OPERATE
HR PUMP DRY.
1. Turn on the heat pump. The HR pump should
not run if the compressor is not running.
2. Turn HR switch to the "ON" position. The pump
will operate if entering water temperature to
HR is below 120° F.
3. The temperature difference between the water
entering and leaving the heat recovery should
be 5° to 15° F.
4. Allow the unit to operate for 20 to 30 minutes
to ensure it is functioning properly. The pump
should shut off when the water temperature
entering the heat recovery reaches 120°F.
SM Series Heat Pump
Heat Recovery Package | 39
6 720 220 406 (2013/1)