Maritime Geothermal ATF-45, Инструкция по установке и обслуживанию

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Page 56 002000MAN-01 1-Jun-2018
Air Heating Mode:
1. Set the thermostat to heating mode and adjust the setpoint to activate stage 1 and stage 2. The fan should slowly ramp up
to speed after the time delay of the thermostat expires (if applicable) and the compressor will start.
2. Check the PC App or LCD Display. The suction and discharge pressures will vary based on the outdoor temperature and indoor
air temperature, but they should be 90-110PSIG and 260-360PSIG respectively for a typical start-up.
3. Monitoring the refrigeration gauges while the unit runs. Record the following after 10 minutes of runtime:
1. Suction pressure
2. Discharge pressure
3. Duct Return temperature (poke a small hole in the flex collar and insert probe in airstream)
4. Duct Supply temperature (poke a small hole in the flex collar and insert probe in airstream)
5. Duct Delta T (should be between 22-32°F, 12-18°C )
6. Outdoor air temperature
7. Compressor L1(C) current (black wire, place meter between electrical box and compressor)
4. Adjust the thermostat setpoint to the desired room temperature and let the unit run through a cycle.
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 DHW Switch in the unit post on. Turn the power to the
unit on.
6. Verify the DHW IN and DHW OUT temperatures (if applicable) by hand (caution: pipes get hot). If the DHW OUT line does not
become hotter than the DHW IN line the circulator is air locked. Bleed the air from the system and check the temperature differ-
ential again to ensure there is flow from the circulator.
7. Remove the electrical cover from the plenum heater. Place a current clamp meter around one of the supply wires. Turn on
the power to the plenum heater. Adjust the thermostat setpoint to 85°F (29°C) . Verify that the current draw increase as
each electric heat stage is activated. (10kW has 2 stages, 15kW has 3 stages and 20kW has 4 stages).
Air Cooling Mode:
1. Set the thermostat to cooling mode and adjust the setpoint 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. Duct Return temperature
4. Duct Supply Out temperature
5. Duct Delta T
6. Outdoor air temperature
3. Adjust the thermostat setpoint to the desired room temperature if possible, otherwise set it just low enough to allow the unit t(e.g.
1°F / 0.5°C less than room temperature) and let the unit run through a cycle.
Water Heating Mode:
1. Set air thermostat to “off”. Adjust the Setpoint Control settings via the the PC App or LCD (or adjust aquastat if used) to activate
stage 1 and stage 2. The EEV will begin to open and the compressor will start, as will the circulator pumps.
2. Check the PC App or LCD Display. The suction and discharge pressures will vary based on the outdoor temperature and the
indoor loop temperature, but they should be 90-110PSIG and 260-360PSIG respectively for a typical start-up.
3. Monitor the unit via the PC APP or LCD Display while the unit runs, and record the following after 10 minutes of run time:
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 8-12°F, 4-6°C )
6. Outdoor air temperature
7. Compressor L1(C) current (black wire, place meter between electrical box and compressor)
4. Adjust the control setpoints to the desired buffer tank temperature and let the unit run through a cycle.
Final Inspection:
1. Turn the power off to the unit (and plenum heater if installed) 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. Install the electrical cover on the plenum heater if applicable.
3. Do a final check for leaks/spills and ensure the area is clean.
4. Turn the power on to the unit and the plenum heater if installed. Set the thermostat and water heat to the final settings.
Startup Record:
1. Sign and date the Startup Record and have the homeowner sign as well. Leave the Startup Record with the homeowner, retain
a copy for filing and send a copy to Maritime Geothermal Ltd. for warranty registration.