Commissioning - Potterton Envoy 30 Installation & Service Instructions Manual

COMMISSIONING – Page 16
OPEN VENTED SYSTEMS
Remove the pump and flush out the system thoroughly
with cold water. Refit the pump. Fill and vent the
system. Examine for leaks.
SEALED SYSTEMS
NOTE:
The system can be filled using a sealed system filler
pump with a break tank or by any other method
approved by the Local Water Authority. Refer to 'THE
SYSTEM' section Page 9 in these instructions, also
BS.6798 1987.
Remove pump and flush out the system thoroughly with
cold water. Refit the pump. Fill and vent the system until
the pressure gauge registers 1.5 bar (21.5 lbf/in
Examine for leaks. Raise the pressure until the safety
valve lifts. This should occur within ±0.3 bar of the
preset lift pressure of 3 bar. Release water to attain the
correct cold fill pressure, and set the indicator on the
water gauge to this value.
ALL SYSTEMS
The whole of the gas installation including the meter
should be inspected and tested for soundness and
purged in accordance with the recommendations of
BS.6891.
Electrical testwork should be carried out by a competent
person in accordance with the lEE Wiring Regulations.
Conduct a preliminary electrical test by checking: for
short circuits, fuse failure, incorrect polarity, earth
continuity and resistance to earth. If a fault has
occurred on the appliance, the fault finding procedure
should be followed. See page 27
Fit the functional case door into position by lifting it onto
the top hinge brackets and secure it with the lower two
fixing screws.
FIRST LIGHTING
WARNING: Before lighting the boiler ensure that the
functional case door HAS BEEN CORRECTLY FITTED
and that the sealing strip fitted to the door is forming a
tight seal with the main boiler casing. Before proceeding to
light the boiler, check that the external electricity supply to
the boiler is switched off and that the boiler control switch
is in the mid i.e.
Turn on the gas service cock.
Ensure that the pump and radiator isolating valves are
open.
2
).
Ensure that the time control, if fitted is in an on condition,
and that the room and/or cylinder thermostats, where fitted
are set to high temperatures.
Switch on the external electricity supply to the boiler.
The display on the front of the control panel will show the
character " ".
Note: The boiler is protected by an automatic frost
protection device, therefore if the water temperature within
the boiler is below 5
and the boiler will fire until a return temperature of 10
reached. The boiler will then shut down and the character
" " will be displayed.
16
position.
0
C the character " " will be displayed
0
C is