VFI Series User's Manual
VFI33 Vent Free Gas Fireplace System
20
20307670
RED
RED
RED
RED
RED
BLACK
D/C POWER
GREEN
GROUND
BROWN
BLACK
BLACK
ORANGE
YELLOW
BLACK
BLACK
RED
CAUTION
Electrical connections should only be performed by a qualifi ed, licensed electrician. Main 
power supply must be turned off before connecting fans to the main electrical power supply 
or performing service.
Figure 22 – 
IPI System Wiring Diagram
IPI SYSTEM WIRING DIAGRAM
ELECTRICAL INSTALLATION – IPI
WALL SWITCH INSTALLATION
The wall switch wire connection is located off the wire 
harness coming out of the IPI Control Board. The label is 
wired 'wall switch'. Connect the low voltage switch wires to 
the two (2) terminals labeled "wall switch" from the control 
board. Run wire to desired location on wall. Up to 50 feet 
of 18 gauge wire may be used if necessary. Attach wires 
to wall switch. Mount the wall switch in a junction box and 
screw on cover. Figure 22










