Valley Comfort Systems Inc
1290 Commercial Way, Penticton, B.C. V2A 3H5 250-493-7444
Version 1.04 18 Date printed: February 15, 2008
Install firebox liner brick in the sequence indicated by number in the following diagram. (FIG 3)
ADD-ON TO ELECTRIC FURNACE
The VC120 may be added to an electric furnace with heating capacity between 15KW and 30KW.
Minimum blower capacity must be at least 900 cfm. Electric furnaces approved for installation in any
position can be inverted and used in a down flow position using an adapter duct between the fur-
nace and the add-on as indicated in fig. 1. The electric furnace may be located on either side of the
VC120 but clearances to combustibles must be maintained. Refer to general and pressure loss (pg
13) instruction portions of this manual also.
If changes are made to the installation of the electric furnace they must comply with CSA Standard
C22.1.
An interlock limit switch must be included in the control circuitry to prevents the electric furnace from
operating when the output plenum temperature is above 150oF. Typical wiring diagram follows, Fig
4 and 4A.
