Installation - Worcester 50/70 Installation And Servicing Instructions

11. Installation

11.1 After unpackaging the appliance it is recommended that all
cabinet panels are removed, as described in Section 5, and
stored in a safe place to avoid damage during installation and
allow easy inspection for any leaks after the system has been
filled. Where the appliance is installed close to a wall the rear
panel may be discarded as this is supplied for cosmetic reasons
only. This will then allow the panels to be easily removed if
access is required in the future.
11.2 Remove the burner as described below and store in a safe
place until the appliance is ready for commissioning.
1. Remove the electrical lead plug by removing the electrical
facia and pulling the three pin connector free. Slide the locating
bush from the electrical box.
2. Remove the burner from the boiler by slackening the two M6
retaining screws located in the burner housing ring and pulling
the burner clear. This will require the use of a 5mm allen key.
11.3 Flue system installation.
Install the appliance flue system as described in Section 7.
11.4 Heating system installation.
1. Plumb the boiler into the central heating system.
2. Check that all unused sockets have been plugged.
3. Fill the system and vent all radiators and high points to
remove air from the system.
4. Check the boiler and all pipework connections for leaks.
5. The primary system should be flushed and treated in
accordance with the recommendations of BS 7593: 1992.
11.5 Oil supply installation (See Fig. 7).
Note: Never route the oil supply pipe/hose directly below the
combustion chamber base.
1. Fit the oil supply pipe as described in Section 8. The pipe can
be routed down either side of the boiler in the gap between the
base tray and the boiler shell.
Note: Never use soldered joints on oil supply pipes as this could
cause a hazard in the case of a fire.
2. Fit an isolating valve at the end of the oil line close to the
burner and ensure that the valve is closed.
3. Open the main oil supply valve at the tank and check for any
leaks.
4. Place a suitable container below the isolating valve and open
the valve.
5. Draw off at least 2.5 litres of oil until a steady flow of clear
uncontaminated oil can be seen and turn off the isolating valve.
Note: This method may not be possible on some installations
where a sub-gravity system is used. Where this problem arises
bleed the system using the oil pump as described in Section 12.6
and remove and clean the oil pump filter to remove any debris
collected as a result of installation.
11.6 Replace the electrical control panel and side panels in
reverse order to the removal procedure of Section 5 and connect
the electrical supply as described in Section 10.
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