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Sequence for wiring NV unit:
For units without control centers:
The motor nameplate is to be used for determining the voltage and amperage required by
the unit.
For units with control centers:
1. The unit’s nameplate states the voltage and total amperage required.
The main feeder supplying power to the unit should be sized for the label’s voltage and amperage.
2. The main power line should be connected to the disconnect switch.
Make sure that the disconnect lugs are securely tightened.
3. Connect control panel wiring to terminal strip in the control center.
Greenheck’s standard control voltage is 120/60/1.
4. When an optional convenience outlet is provided, a separate power supply must be provided to
the receptacle. This circuit must be on a ground fault breaker.
CAUTION !
If any of the original wire must be replaced,
the replacement wire must have a temperature
rating of at least 105°C, except for energy cut-off
or sensor lead wire which must be 150°C.
DANGER !
High voltage electrical input is needed for this
equipment. This work should be performed by a
qualified electrician.
Before connecting power to the unit, read and
understand the following instructions and
wiring diagrams. Complete wiring diagrams
are attached inside the door(s) of the unit.
All wiring should be done in accordance with
the National Electrical Code ANSI/NFPA 70-
latest edition and any local codes that may
apply. In Canada, wiring should be done in
accordance with the Canadian Electrical
Code. The equipment must be properly
grounded.
NOTE: Any wiring running through the NV unit in the airstream must be protected by
flexible metal conduit, metal clad cable, or raceways.
Electrical Instructions
CAUTION
Any wiring deviations may result in personal injury or property damage. Greenheck is not
responsible for any damage to, or failure of the NV unit caused by incorrect final wiring.
Electrical Location
Electrical Power Connection
Electrical Controls Door
Electrical Controls Door
Electrical Power
Connection
NV-45 NV-90-120