Sterling ERMS - Manual (Page 8)

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INSTALLATION
1 - Place gasket on the top perimeter flange of the curb.
2 - For Downflow units: Place gasket on the duct support flanges around the downflow duct
openings.
3 - Place the ERV on the curb. Make sure the duct openings on downflow units align with the
duct openings in the curb.
4 - Connect power and control wiring to the ERV. See the wiring diagram. Provide disconnect
means and overload protection as required by job conditions.
PRE-START-UP
1 - Turn off ERV disconnect, open access doors and remove access panels for pre-start-up
inspection.
2 - Check the unit for racking of the Energy Wheel. Rotate the wheel by hand to ensure a
smooth rotation. If there is excessive resistance to wheel rotation, and the wheel is not racked
or damaged, then the seals used to minimize transfer between the air streams may need to be
adjusted. Refer to the Energy Wheel information for seal adjustment.
3 - Check fan and wheel belt tension. Wheel belts are tensioned at the factory. Excessive
wheel belt tension or its lack may indicate damage to the wheel. Refer to the Energy Wheel
literature for further information.
4 - Check all pulleys and make sure all key ways are in place with the set screws tightened.
5 - Check motor mounting bolts. Make sure all bolts are tight.
6 - Check all electrical connections with the wiring diagram.
7 - Check all filters and wheels for obstructions that may inhibit performance.
8 - For units with blowers using vibration isolation springs: Remove shipping blocks and adjust
isolators for free fan movement.
START-UP
1 - Activate the control circuit to energize the ERV.
2 - Check the energy wheel and the blowers for correct rotation. For wheel rotation direction,
see the rotation label located near the wheel motor. If rotation is incorrect, de-energize the
control circuit and turn off the disconnect. For three phase motors, swap two of the incoming
power leads to the motor. For single phase motors, refer to the motor nameplate connection
diagram.
3 - Balance the supply and exhaust blower airflows per the job schedule. Adjustable sheaves
are provided on the motors unless otherwise specified.
4 - Check out ERV system per the sequence of operation.
5 - Record supply, exhaust and wheel motor running voltage and amperage information.
6 - Close all doors and access panels.
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