Prepare ZC Box
NOTE: The vent plate may be positioned within a
2-inch variation front to back (see dimensions on
previous page). Determine the best position for the
vent plate and adjust it to suit by sliding it on top of
the box.
1. Remove stand-offs from top of ZC box; fold and
reattach to top of box.
2. Position ZC box in cavity and connect to vent
system—see note above concerning the position of
the ZC box.
3. Rough-in gas line to left hand side.
4. Install the short length of 3" dia. flex liner supplied
with the kit to the collar inside the ZC box using
the gear clamp provided. Secure the vent plate
removed from the insert to the other end of the
liner using a gear clamp.
5. Compress or stretch the liner so the vent plate is
approximately 19" above the floor.
6. Paint liner and gear clamps using black high heat
paint (not supplied).
Install Insert into ZC Box
If a fan is to be installed, it should be installed to the
heater before the heater is inserted into the ZC box. See
separate installation instructions with the fan kit.
1. Slide the insert into the zero clearance box while
guiding the vent plate into the cleats on top of the
insert. Mount the fret retainers to the insert prior to
installing for RA24DS Screen (other fronts have the
retainers built in). Secure the vent plate using
2 screws.
2. Connect the gas line to the unit.
Install Heat Shield and Convection Baffle
1. Place heat shield into ZC box through the notched
cut-outs on each side at the top of box.
3