
ISSUE DATE 3-23-06 REV. DATE: 10-19-06 REV. LEVEL: 05 ECN: N/A OIPM P/N 3420318 Pag
3
of
5
- 208/240 VAC single-phase single stage controller
- Built-in On/O switch with sur ace plate included
- A triac to control heat settings rom 10 to 100%.
- Designed or wall mounting in the same space a
4”x 4” electrical wall box would mount.
- Accommodates hardware or 1/2” conduit.
- Will o erate:
o One (1) or two (2) quartz lam s
totaling u to 3200W or
o One (1) or two (2) quartz tubes
totaling u to 3200W.
The initial current inrush o T3 quartz lamps is
very high; as much as 10 – 15 times the steady
state current. Operating the VHC-
than two (2) 1600W quartz lamps may damage th
control. This concern is not applicable to quartz
tubes or other constant-resistance elements.
To install the VHC-32:
1. Care ully remove cover rom controller (internal
wiring is attached rom inside o cover to rear o
controller box) and mount box
page shows mounting-hole options.
Note: I wires are accidentally pulled o the heat sink
during installation, re erence Wiring Diagram or
correct reattachment.
2.
Wire control to power source and heater as shown in
wiring diagram using (4) wire nuts provided. Note
that wires marked “L1” or “L2” can be attached to
either incoming power lead. Also, the wire marked
“H1” and the red wire coming rom the heat sink can
be wired to either lead going out to the heater.
3. Attach bonding (ground) wires under green screw in
back o box.
4. Reattach cover to box being careful not to
damage internal wiring.
ELECTRICAL SHOCK HAZARD
• Serious injury or death may
occur.
• Disconnect from electrical
su ly before installing or
servicing this roduct.
• Make certain the ower
source conforms to
s ecifications on heater label.
• Always
wire from heater to bonding
(ground) wire from electrical
su ly, not to a live or “hot”
conductor.
• Use 12 AWG, 90° C rated
co er wire only. Maximum
50 ft. run.
• Follow state, local and
national electric codes (NEC).
RED
BLUE
ORANGE RED
PURPLE HEAT SINK
CONTROLLER
ROCKER
SWITCH
208/240V
SOURCE
GND.
L1
L2
TO HEATER
H1
CONTROLLER BOX
WIRE NUT
WIRING DIAGRAM
For field wiring, refer to the Installation
manual included with your heater.
All wiring must be erformed by a licensed
electrician.