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COMMISSIONING – Page 19
BOILER DISPLAY
Under normal conditions of operation the following
characters will indicate:-
Electricity supply ON but secondary controls
switched OFF and boiler control switch in mid
position
Boiler operating at lower flow temperature
Boiler operating at higher flow temperature
Boiler operating but up to temperature
Boiler restart delayed to prevent rapid cycling. (Max.
delay time is 5 mm)
Main burner off, pump running to transfer remaining
heat from boiler into the system
FLASHING. Boiler at lock-out
Other characters will be displayed if a fault condition
should occur. Their purpose is to assist the service
engineer and more information is provided in the
SERVICING section of these instructions.
OTHER BOILER CONTROLS
All boiler mounted controls are designed so that if any
fault should occur they will fail safe. No further setting or
checking is necessary.
FIG. 14 CASE ASSEMBLY
Attach casing side panels onto the boiler as illustrated
ensuring that the four lugs on each panel are correctly
located. Slide in the bottom panel and push fully home.
Engage hooks on the top rear of the front panel into the
slot in the top front corner of each side panel. Lower the
front panel to engage brass studs into the retaining clips,
press fully home to lock panel into position.
EXTERNAL CONTROLS
Check that any other external control connected in the
system, such as clocks and thermostats, control the
boiler as required.
USER’S INSTRUCTIONS
A user’s instruction leaflet is provided with this boiler but
the householder must have the operation of the boiler and
system explained by the installer. THE
HOUSEHOLDER MUSTALSO BE ADVISED OF THE
IMPORTANCE OF ANNUAL SERVICING and of the
precautions necessary to prevent damage to the system
and building, in the event of the system remaining out of
commission in frost conditions.
Information must also be passed to the customer on the
type of corrosion inhibitor that has been added to the
system and of the need to maintain the correct
concentration levels as recommended by the
manufacturer.
Summary of Contents for envoy 30
Page 4: ...4 TECHNICAL DATA PAGE 4 FIG 2 GENERAL ARRANGEMENT ...
Page 28: ...28 FAULT FINDING CHART 1 Page 28 ...
Page 29: ...29 FAULT FINDING CHART 2 Page 29 ...
Page 30: ...30 BOILER INTERNAL WIRING Page 30 ...
Page 31: ...31 BOILER WIRING LAYOUT Page 31 ...
Page 36: ...36 Back Page ...