ZZ757/9
4
6.2.9
The flue/air duct spigot on the appliance is female. For horizontal flued appliances, the flue/air duct should be
constructed that such that condensate cannot leak from the joints. Therefore, on vertical runs, all female ends
should face away from the appliance, and on horizontal runs should face towards the appliance, as depicted in
Fig. 3. To reverse the lay of joints, it is recommended to use male/male adaptors, available from Johnson &
Starley (Pt Nos. 1000-0002840 [inner], and 1000-0002850 [outer]). The flue should be constructed working
from the appliance towards the telescopic flue.
6.2.10
Construction of flue joints.
a.
Coat the end of the inner tube with silicone sealant capable of withstanding temperatures of up to 200
O
C
(not provided), and insert it fully into the female end of the next tube.
b.
Using 3.3mm dia. drill, drill one hole through the assembly and secure with 1 x blind pop rivet (provided).
c.
Fit 1 x centring clip (provided) over the tube, immediately down flow of the joint.
d.
Slide the outer tube over the centring clip; assembly, secure and seal the outer joint in the same manner as
the inner joint.
NOTE: Only use the BLIND POP RIVETS PROVIDED.
Fig. 2
Telescopic flue applications
Fig. 3
Vertical flue application
Fig. 4
Flue jointing
300mm
minimum
ZZ757/9
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10.4
GENERAL INFORMATION:
10.4.1 This appliance is fitted with an automatic sequence control which also provides a spark ignition and flame
detection facility. If the ignition/detection electrode fails to detect the presence of a flame during normal
operating conditions, it will cause the multifunctional control to close. The control will then make one attempt at
re-ignition by repeating the pre-purge/ignition cycle and then lock out (indicated by the amber light). The
combustion air fan will continue to run, provided there is a demand for heat. Operation of the time control (if
fitted) or if the room temperature exceeds plenum the set comfort level will simply cause the appliance to switch
off (green light goes out). In this case, restoration of the electrical supply will initiate the ignition sequence.
10.4.2 If the combustion air fan will not start when the electrical supply to the appliance is on, and there is a demand for
heat, the defect lies in the control module or the combustion air fan. Check that the connections to the fan are
sound, and then, if necessary, change the control module followed by the combustion air fan.
10.4.3 If lockout occurs and it is known that gas is being supplied to the appliance, attempt to restart the appliance by
pressing and releasing the reset button. If this attempt to restart the appliance is unsuccessful, check the electrode
lead and the electrode for damage and replace as necessary.
Note:
It is possible to obtain a spark, even when the
electrode lead is damaged, but the lead may not be able to conduct the very small detection current to the ignition/
detection control. If there is no evidence of damage to the electrode or lead, replace the ignition control unit.
10.4.4 The appliance is also fitted with an overheat cutout device mounted on the face of the control module. This device
will cause the appliance to shut down if an overheat situation should arise due to a lack of adequate ventilation.
Therefore it is important that the minimum installation clearances are maintained, and that the ventilation
apertures on the sides and inside the appliance remain unblocked.
DEFECT DIAGNOSIS FLOW CHART
AIR CIRCULATION FAN ON, BUT BURNER CYCLES BEFORE
REQUIRED COMFORT LEVEL IS REACHED
Disconnect Thermista-stat at terminals 3 & 4 and link terminal 3 to ‘TEST’
terminal.
Do not link terminals 3 & 4.
Burner continues to cycle
Burner remains on
Check air filter, return air path
Thermista-stat defective.
and outlets for restrictions.
Burner continues to cycle
Link terminals 10 & 11 to bypass limit control.
Burner continues to cycle
Burner runs and room
Replace electronics module.
temperature rises
Check temperature rise.
Less than 60 degrees C
More than 60 degrees C
Replace fan delay/overheat (limit)
Replace electronics module.
control.
BURNER ON, BUT AIR CIRCULATION FAN NOT RUNNING
Check for 230 volts at fan terminals 14 & 15
No 230 volts detected
230 volts detected
Switch to ‘Summer Airflow’.
Switch to ‘Summer Airflow’.
Check for 230 volts at energy
capacitor black leads.
No 230 volts detected
230 volts detected
Replace energy capacitor. Replace air circulation fan.
Air circulation fan runs
Air circulation fan does
Replace fan delay/overheat
not run
(limit control).
Replace electronics module
BURNER ON CONTINUOUSLY
(ROOM TEMPERATURE TOO HIGH)
Set Thermista-stat to ‘Summer Airflow’
Burner remains alight
Burner goes out
Disconnect solenoid plug at
Replace Thermista-stat.
multifunctional control.
Burner remains alight
Burner goes out
Replace multifunctional control.
Replace electronics module.
