Larkin AFC-DCV, Installation, Operation And Maintenance Instructions

Page: 5 / 15

5
1. Check the power source to see if it is compatible with the requirements of the provided system. The AFC-
DCV wiring diagram lists the proper phase, voltage, and amp load.
2. Verify input power voltage before connecting to Variable Frequency Drive(s) (VFD).
3. Check rotation of fan(s). Exhaust fans will move some air in reverse (see rotation arrow on fan). To
correct rotation of fan(s), any two output leads from the 3 Ph VFD (U, V or W) to the fan may be reversed,
or rotation may be changed in parameter 400.13 (see Setting VFD Parameter Instructions Pg. 12).
4. When wiring to a Tempered MUA unit, a tempering lock-out connection must be connected to the
Tempered MUA unit from the control box, or the unit may not operate properly. (see Tempered MUA Unit
wiring diagram connections from R and W1 Pg. 8)
Field Wiring Requirements for Control Panel
Control Circuit: Field wire 120 VAC 1 Phase 15 AMP circuit to the Control Panel terminals Control Hot (CH),
Control Neutral (CN), and Ground (GND) from breaker panel. Control circuit should not be wired to a shunt
trip breaker .
Light Circuit: Field wire 120 VAC 1Phase 15 AMP circuit to the Control Box terminals – Light Hot (LH), Light
Neutral (LN), and Ground (GND) from breaker panel.
Hood Lights: Field wire hood light(s) from the hood light junction box to the Control Box terminals Hood Light Hot
(HLH), Neutral (N), and Ground (GND).