FORM 8230
ISSUE DATE: 5/2021
ECO 1-7727 REV. LEVEL: -- Page 1 of 3
INSTALLATION AND OPERATION INSTRUCTIONS
VHC-66, VHC-99
VARIABLE HEAT CONTROL
FOR INFRARED HEATERS
INSTALLATION
INSTRUCTIONS
DESCRIPTION
The VHC-66 and VHC-99 are variable output controls for infrared heaters. The ouput can be adjusted
to allow the user to vary the desired output of the heater to maintain a comfortable environment
depending on the ambient temperature.
INSTALLATION
• Disconnect power at main breaker before servicing this control.
• The installation of the VHC-66 and VHC-99 must conform to the National Electric Code and/or
authorities having jurisdiction.
•
All wiring must be performed by a qualified, licensed electrician.
•
All conductors must be copper, the VHC-66 and VHC-99 must be grounded per the National Electric Code.
• Over current must be provided to each indivdual heater circuit in an approved distribution panel.
•
The VHC-66 and VHC-99 are not rainproof, they must be installed in a protected area.
OPERATION
• When all required installation and wiring are completed:
• Adjust the potentiometer to the lowest setting (counter-clockwise).
• Turn the breakers on.
• Adjust the potentiometer (clockwise) to obtain the required heater ouput.
Note: These controls are provided with a three second ramp up function (soft start) to permit
control of high inrush lamps. Never connect cold lamps after start up.
VHC-66
Volts: 240/208 Hz:50/60
Amps: 32
Maximum watts@ 208V: 6656
Maximum watts@ 240V: 7680
Minimum Wire Size: 8 AWG
VHC-99
Volts: 240/208 Hz:50/60
Amps: 48
Maximum watts@ 208V: 9984
Maximum watts@ 240V: 11520
Minimum Wire Size: 6 AWG
