RHC 8000 EN April 2019 D301207 Issue C
Page 29
7.2 Burner Injectors
1. Carry out steps 1 to 9 of section 7.1.1
2. Unscrew the main burner injectors.
3. Re-fit new injectors.
4. Re-assemble in reverse order.
7.3 Ignition System
To access the ignition system, follow steps 1
to 3 in section 7.1..1 Igniter - refer to figure
12 and locate the igniter (on the side of the
burner rack). Disconnect the wire, remove
the screw and the igniter. Clean with an
emery cloth.
Note: Spark gap must be maintained to 3.0
mm See figure 13.1.
Important: When re-assembling the earth
wire must remain attached to the igniter.
We refer to figure 13.2 for installing the
igniter.
CAUTION: Due to high voltage on
the spark wire and electrode, do
not touch when energized. See
hazard levels.
Flame sensor
- Refer to figure 12 and
locate the flame sensor.
Disconnect the wire, remove the screw and
the flame sensor.
Clean with an emery cloth.
Ignition controller
- The enclosed
integrated circuit monitors the operation
of the burner including ignition. Do not
attempt to dismantle the ignition controller.
Each heating season lead wires should be
checked for insulation deterioration and
good connections.
Proper operation of the direct spark ignition
system requires a minimum flame current
of 1,0 μA when measured with a micro
ampmeter.
For further information and checkout
procedure of the direct spark ignition
system, refer to the manufacturers control
operating instructions a copy of which is
supplied with the air heater.
7.4 Multi-Functional Gas Control
Valve
1. Ensure gas supply to the air heater is
turned OFF.
2. After the air circulation fan has stopped,
switch OFF the electricity supply to the air
heater.
3. Mark for future identification and
disconnect the wires connected to the valve.
4. Disconnect the gas service union
between the control valve and the gas
service tap. Remove the gas control valve.
5. Re-fit a replacement valve making all of
the required connections.
6. Carry out complete commissioning
procedure prior to placing the appliance
back into service as outlined in section 5.0.
CAUTION
CAUTION: The gas control-
operating valve is the prime safety
shut-off. All gas supply lines must
be fee of dirt, scale, etc. before
connecting to the air heater thus
ensuring positive closure of the
control valve.
CAUTION
Figure 13.1 Igniter assembly
Summary of Contents for Reznor RHC DJL 8000
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