Nordic AH4P Series, Руководство по обслуживанию

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5-Jul-2022 Page 14 002596MAN-01
Unit Startup
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. It is recommended that safety glasses be worn during the following procedures.
Preparation:
1. Turn the power on to the hydronic air handler and set the thermostat to OFF. Set up the thermostat as per its instructions
so that it will function properly with the air handler.
2. Measure the following voltages on the terminal block and record them on the startup sheet: L1-L2.
Heating Mode:
1. Ensure the heating source is operational and the zone supply water has reached the desired temperature.
2. Set the thermostat to heating mode and adjust the setpoint to activate heating. The fan should slowly
ramp up to speed after the time delay of the thermostat expires (if applicable) and the zone valve (if installed) will open to allow
water flow to the unit (allow up to 30 seconds for the valve to open).
3. Record the following after 10 minutes of runtime:
1. Duct Return temperature (poke a small hole in the flex collar and insert probe in airstream)
2. Duct Supply temperature (poke a small hole in the flex collar and insert probe in airstream)
3. Duct Delta T
4. Hydronic Loop In temperature
5. Hydronic Loop Out temperature
6. Hydronic Delta T
4. Adjust the thermostat setpoint to the desired room temperature and let the unit run through a cycle. Ensure the unit shuts off at
the end of the cycle (fan and zone valve if installed).
6. If a plenum heater is installed, 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 at least 85°F (29°C) and observe
the current increase to operating level.
Cooling Mode:
1. Ensure the cooling source is operational and the zone supply water has reached the desired temperature.
2. Set the thermostat to cooling mode and adjust the setpoint to activate cooling.
3. Record the following after 10 minutes of runtime:
3. Duct Return temperature
4. Duct Supply temperature
5. Duct Delta T
6. Hydronic Loop In temperature
7. Hydronic Loop Out temperature
8. Hydronic Delta T
4. Adjust the thermostat setpoint to the desired room temperature if possible, otherwise set it just low enough to allow the unit
to run (ie 1°F (0.5°C) less than room temperature) and let the unit run through a cycle. Ensure the unit shuts off at
the end of the cycle (fan and zone valve if installed).
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 unit.
3. Do a final check for leaks in the hydronic system and ensure the area is clean.
4. Turn the power on to the unit and the plenum heater if installed. Set the thermostat to the final settings.
Startup Record:
1. The installer should sign and date the Startup Record and have the client sign as well. The installer shall leave the Startup Rec-
ord with the client, retain a copy for filing and send a copy to Maritime Geothermal Ltd. for warranty registration.