Enertech Global, LLC
27
WS Rev. E Models
Installation and Operations Manual
Equipment Start-Up Process Form
Electrical:
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High voltage wiring and breakers are properly sized and installed.
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Auxiliary electric heaters are wired and installed correctly.
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Circulator pumps are wired properly and connected to the proper terminal block.
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Low voltage wiring is correct and completely installed.
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Source voltage is correct and matches dataplate.
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HWG pump is not wired or is switched off until all piping is correct and air is purged from the system.
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Lockout board jumpers are properly selected for installation, i.e., A-FRZ jumper removed for closed loop.
Plumbing:
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Piping is completed, properly sized and purged of all air and debris, loop, HWG and load side.
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Pumps are properly sized and purged of all air.
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Correct amount of antifreeze has been added.
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All valves are open including flow center.
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Condensate is trapped and properly piped to drain.
Mechanical:
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Filter is installed and clean.
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Packaging and shipping brackets are removed from the blower assembly.
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Blower turns freely.
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Canvas connections installed on supply plenum & return drop.
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Replace all service panels and screws.
Equipment Start-Up:
1.
Energize geothermal unit with high voltage.
2.
Make sure secondary/low voltage is between 20V and 29V. Check the transformer’s primary connections at the main
contactor for the correct voltage (Orange & Black = 230V; Red & Black = 208V). Correct any possible voltage drops in the
main voltage.
3.
Set the thermostat to “Heat” or “Cool.” Adjust set point to energize the unit. System will energize after delays expire
(typically a five minute delay).
4.
Check water flow with a flow meter (non-pressurized) or pressure drop conversion (pressurized). Pressure drop tables must
be used to convert the pressure drop to GPM. The pressure drop can be obtained by checking water pressure in and water
pressure out at the P/T ports. Check the geothermal unit’s electrical readings listed in the Unit Electrical Data table.
5.
Check the source water temperature in and out at the P/T ports (use insertion probe). Allow 10 minutes of operation
before recording temperature drop.
6.
Calculate the heat of extraction or heat of rejection.
7.
Check the temperature difference of the load coax (water-to-water) or air coil (water-toair). P/T ports are recommended
for use on the load side, but the line temperatures can be used to check the temperature difference.
8.
Change the mode of the thermostat and adjust the set point to energize the unit. Check the data in opposite mode as the
previous tests. Amp draws as well as temperature differences and flow rate should be recorded.
9.
Check auxiliary heat operation by adjusting the thermostat set point 5°F above the room temperature in “Heat” mode or
set thermostat to “Emergency.” Record voltage, amperage, and air temperature difference.
10.
Connect HWG wires or turn switch (if equipped) to on position.
Section 11: Equipment Start-Up Procedures