Unit Startup - Boreal W-Series Installation And Service Manual

The unit is now ready to be started. The steps below outline the procedure for starting the unit and verifying proper operation of
the unit controlled by aquastats. It is recommended that safety glasses be worn during the following procedures.
Preparation:
1. Remove the caps from the service ports and connect a refrigeration manifold set to the unit.
2. Turn the power on to the heat pump and set the all controls to OFF.
3. Measure the following voltages on the compressor contactor and record them on the startup sheet: L1-L2, L2-L3, L1-L3.
Heating Mode:
1. Set the heating aquastat setpoints to activate Stage 1 and Stage 2. The compressor will start (allow 30-60 seconds for the
water valve to open for ground water systems) as well as the circulator pumps.
2. Check the refrigeration gauges. The suction and discharge pressures will depend on the loop temperatures, but they should
be about 90-110PSIG
3. Monitoring the refrigeration gauges while the unit runs. Record the following after 10 minutes of runtime:
1. Suction pressure
2. Discharge pressure
3. Indoor Loop In (Hot In) temperature
4. Indoor Loop Out (Hot Out) temperature
5. Indoor Delta T (should be between
6. Outdoor Loop In (Supply In) temperature
7. Outdoor Loop Out (Supply Out) temperature
8. Outdoor Delta T (should be between
9. Outdoor flow (if available)
10. Compressor L1(C) current (black wire, place meter between electrical box and compressor)
4. Adjust the aquastat setpoint to the desired buffer tank temperature and let the unit run through a cycle. Record the setpoint
and the discharge pressure when the unit shuts off.
5. For units with a desuperheater, turn the power off to the unit. Connect the brown wire with the blue insulated terminal to the
compressor contactor as shown in the electrical box diagram. Turn the power to the unit on.
6. Open a zone (or zones) and let the tank cool down until Stage 2. is activated. Close the zone(s) again.
7. Verify the DHW IN and DHW OUT temperatures (if applicable) by hand
not become hotter than the DHW IN line the circulator is air locked. Bleed the air from the system and check the
temperature differential again to ensure there is flow from the circulator.
Cooling Mode:
1. Set the unit to cooling mode and adjust the cooling aquastat setpoints to activate Stage 1 and Stage 2.
2. Monitoring the refrigeration gauges while the unit runs. Record the following after 10 minutes of runtime:
1. Suction pressure
2. Discharge pressure
3. Indoor Loop In (Hot In) temperature
4. Indoor Loop Out (Hot Out) temperature
5. Indoor Delta T
6. Outdoor Loop In (Supply In) temperature
7. Outdoor Loop Out (Supply Out) temperature
8. Outdoor Delta T
3. Adjust the cooling aquastat setpoints to the desired tank temperature, and allow the unit to run through a cycle. Record the
aquastat setpoint and the suction pressure when the unit shuts off.
Final Inspection:
1. Turn the power off to the unit and remove all test equipment.
2. Install the electrical box cover and the access panel on the heat pump. Install the service port caps securely to prevent
refrigerant loss.
3. Do a final check for leaks in the ground water / ground loop system and ensure the area is clean.
4. Leave a copy of the Startup Record at the installation site, send a copy to Boreal Geothermal Inc. and keep the final
copy.
5. Turn the power on to the unit. Set the aquastats to the final settings and record the values.
Boreal Geothermal Inc.
and 260-360PSIG respectively for a typical start-up.

UNIT STARTUP

8-12°F, 4-6°C)
5-8°F, 3-4°C)
(caution: pipes get hot).
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If the DHW OUT line does
02 JULY 2009