Connecting The Communication Cable; Electrical Work; Connect The Cable To The Indoor Unit - Heat Controller VMH 30 Series Installation, Operation & Maintenance Manual

Installation, Operation & Maintenance
4

CONNECTING THE COMMUNICATION CABLE

Electrical work

Electric safety regulations for the initial Installation should meet all local and national electric codes
1. Voltage power should be in the range of 90%~110%of rated voltage.
2. The creepage protector and main power switch should be at least installed in the power circuit
1.5 times the capacity of Max. Current of the unit should be installed in power circuit.
3. Ensure the air conditioner is grounded well.
4. Use the Electrical Connection Diagram located on the panel of the outdoor unit
and indoor unit to connect the wire properly.
5. An individual branch circuit and single receptacle used only for this air conditioner must be available.
6. HCI recommends the use of 600V THHN 14 AWG/4 conductor unshielded stranded copper cable,
however NEC always prevails.
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N

Connect the cable to the indoor unit

D
NOTE:
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1. The inside and outside connecting cable can be connected without removing the front grille.
2. Lift the indoor unit panel up, remove the electrical box cover by loosening the screw.
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3. Ensure the color of wires of outdoor unit and the terminal Nos. match the indoor's
respectively.
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4. Wrap those cables not connected with terminals with insulation tape, so that they will not touch
any electrical components. Secure the cable onto the control board with the cord clamp.
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N
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T
VMH 30/36 SERIES
INDOOR SECTION
Before performing any electrical work, turn off the main power to the system.
Panel
Electrical box
cover
Terminal block of indoor unit
S
1
2(N)
G
Or
To outdoor unit
6
Heat Controller, Inc.
L1 L2 S
To outdoor unit