Fitting The Burner - Potterton NXR4 Installation, Operation & Maintenance Manual

SECTION 4
PAGE 22
Fig. 16 – Cable Routing
CAPILLARIES
Flue Gas Thermometer
The housing for the thermometer is positioned on the
control panel front and the thermometer in the flue
stack.
1 Remove top of control panel and open the front.
2 Remove the factory mounted blanking plate and
engage the capillary and the thermometer housing
in the front aperture.
3 Guide the capillary through the control panel rear
and casing front top parallel to the other installed
capillaries. Run the capillary along the insulating
blanket towards the back of the boiler to enable
the thermometer to be placed in the connection
pipe between the flue hood and the stack.
4 Drill, preferably vertically, the flue gas duct to
7.5mm Ø and insert the thermometer holding clip
(see Fig. 17).
5 Insert the thermometer into the clip.
6 Close the control panel and refit the top.
POTTERTON COMMERCIAL PRODUCTS DIVISION
INSTALLATION, OPERATION & MAINTENANCE MANUAL
EARTH WIRE
CLAMP
NUT A
BURNER CABLES
Fig. 17 – Fitting Thermometer into Flue
Thermometer
Phial
Holding
Clip
Flue
Stack
Ø7.5
Burner Cables
The NXR4 is supplied as standard fitted with a 7-pin
and a 4-pin Weiland plug for connection to the burner.
High/Low Burner
The 7-pin and 4-pin Weiland plugs should be
connected to the respective plugs provided on the
burner.

FITTING THE BURNER

1 Check that the burner which has been supplied is
the correct burner for the boiler, by checking the
specification on the burner card provided.
2 Fit the burner adaptor plates and the boiler gasket
to the boiler using the fixing screws provided.
3 Place the burner gasket over the burner fixing
studs.
4 Insert the burner draught tube into the firing door
aperture with the gasket in position on the
mounting flange. Secure in position with the nuts
and washers provided.
NXR4