Zone Heating; Gas Log Option; Thermostat - RSF Woodburning Fireplaces ONYX AP Owner's Manual

11. If the blower still fails to operate, consult your local
RSF Woodburning Fireplaces authorized dealer for
repair or replacement instructions.
ZONE HEATING (FDHCZ1 AND FDHCZ2)
For more regional heat control, the Onyx AP is ideally
suited for Zone Heating. (Figure 33) shows an example
of a three-zone system. The thermostat simultaneously
opens the desired valve and starts the blower when heat
is required.
The zone control system consists of:
- 1 FDHCZ1: - 1 Blower Control Box
- 1 Blower Control Center
- 1 Thermal Switch
NOTE: The FDHCZ1 kit replaces the FEHC6 kit if you
are installing the zone system.
1 to 3 FDHCZ2: - Zone Valve (normally closed)

- Thermostat

The system is wired similarly to the single zone system
with the addition of the blower control and blower center.
The whole control system runs on 24V AC.
Make sure that the thermostats are matched
with the correct zone valve. (See Figure 38),
the zone-wiring diagram.

GAS LOG OPTION

The Onyx AP now features a gas conversion
option. You can use your choice of gas log sets
with this conversion. The installation of the gas
should only be done by qualified personnel. To
convert the Onyx AP for use with the gas log
option:
1. You will notice a 1-1/4" diameter knockout
on both sides of the Onyx AP, about 9" up
from the bottom of the fireplace. The gas
line will be installed through one of these
knockouts. Choose the side that is best for
your installation.
2. Remove the firebrick from the base of the firebox. You will notice two sheet metal pieces underneath the fire-
brick. Remove these also. Keep the firebrick and sheet metal, as they will be needed to operate the Onyx AP,
if you would like to burn wood again.
3. Underneath the firebrick and sheet metal, there are four 1" diameter holes in the center of the bottom, to bring
air to the gas log set. These holes must not be blocked.
4. There are two 1-1/4" diameter holes closer to the sides of the bottom of the firebox. If you are installing a gas
valve, install it over one of these larger holes, to allow the airflow to cool the gas valve.
5. When you remove the firebrick you will notice a notch in the bottom of the side refractors. The gas line will come
through one of these notches (see Figure 34).
ONYX AP Owner's Manual
Zone control box
Figure 31: Zone control kit (FDHCZ1)
Zone
valve
Figure 32: Zone heating kit (FDHCZ2)
Figure 33: Zone heating - example 3 zone
26
Blower control central
Thermal
switch
Thermostat
Zone
Zone
thermostats
dampers
RSF Woodburning Fireplaces