Startup Procedure; Pre-Start Inspection; Unit Startup - Maritime Geothermal Nordic PC Series Installation And Service Manual

Startup Procedure

The PC-Series R410a Startup Record located in this manual is used in conjunction with this startup procedure to provide a de-
tailed record of the installation. A completed copy should be left on site, a copy kept on file by the installer and a copy should be sent
to Maritime Geothermal Ltd.
Check the boxes or fill in the data as each step is completed. For data boxes, circle the appropriate units.

Pre-Start Inspection

Ductwork:
1. Verify that all ductwork has been completed and is firmly attached to the unit. Verify that any dampers or diverters are
properly set for operation of the unit.
2. Verify that all registers are open and clear of any objects that would restrict the airflow.
3. Verify that a new air filter is installed and the cover is secured.
4. Verify the condensate drain is connected, properly trapped, vented and free of debris.
5. Ensure the unit is sitting level to prevent overflow of the condensate drip tray.
6. If a plenum heater has been installed, verify that it is securely fastened to the ductwork.
Indoor Loop (Pool Loop):
1. Verify there are no leaks in the connections to the unit.
2. Verify that the bypass is set up as per piping diagrams in this manual.
Electrical:
1. Ensure the power to the unit is off. Ensure the power to the plenum heater is off if equipped.
2. Verify all high voltage connections. Ensure that there are no stray wire strands, all connections are tight and the ground
wire is connected tightly to the ground connector.
3. Record the fuse / circuit breaker size and wire gauge for the heat pump.
4. Verify that the control connections to the unit are properly connected and all control signals are off, so that the unit will not start
up when the power is turned on.
5. Verify that the pool pump contactor signal is routed through the terminals in the PC unit, if PC unit is to have control of pool
pump. Record the voltage of the pump.
6. Ensure all access panels except the one that provides access to the electrical box are in place.
7. Connect a Windows laptop with the MG USB driver and PC App installed via USB cord to control board.

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 unit and verify that the supplied air thermostat powers up. Also verify that the pool pump is running, or
is ready to run if controlled by the PC Unit.
2. Using the PC App and/or room thermostat, adjust setpoints as follows to prepare to run unit in Pool Water Heat mode:

Room RH Stage 1 Setpoint:

Room Temperature Stage 1 Setpoint:

Room Temperature Auxiliary Setpoint:

Pool Water Stage 1 Setpoint:
3. ENABLE the system through the PC App's Tools-->Configuration menus or LCD interface. The unit should start within 5
minutes.
4. Measure the following voltages on the compressor contactor and record them on the startup sheet: L1-L2, L2-L3, L1-L3 (only
L1-L2 for single phase units).
ISSUE 03: 1-Oct-2021
80% (or higher than current room humidity)
50°F (or lower than current air temperature)
50°F (or lower than current air temperature)
90°F (or higher than current pool water temperature)
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