ZONE HEATING (FDHCZ1 AND FDHCZ2)
For more regional heat control, the OPEL AP is ideally suit-
ed for zone heating. (Figure 31) 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:
FDHCZ-1 (Figure 32):
- 1 control box
(1 time)
- 1 blower transformer relay
- 1 thermal switch
NOTE: The FDHCZ-1 replaces the FDHC6 if you are
installing the zone system.
FDHCZ-2 (Figure 33):
- 1 zone valve (normally closed)
(1 to 3 depending
- 1 thermostat
of how many zone you
want to control)
The system is wired similarly to the central heat system
(Figures 36 and 37) with the addition of the blower control
and the blower center (see Figure 38). The whole system
runs on 24V AC. Make sure that the thermostats are
matched with the correct zone valve.
NOTE: the Opel AP must be installed in accordance with
all local codes, if any; if not, follow the current CSA C22.1
in Canada or NFPA 70 in the USA. Install and use as per
the manufacturer’s installation and operating instructions.
Page 32
Zone damper
Zone
thermostats
Figure 31: Zone heating - example 3 zone
Zone control
box
Blower control
centre
Thermal
switch
Figure 32: Zone control kit (FDHCZ-1)
Zone register
Thermostat
Figure 33: Zone heating kit (FDHCZ-2)
OPEL AP
