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COMMISSIONING – Page 18
FIG. 13 GAS CONTROL VALVE
Relight the boiler and reheat the system to maximum.
Check for water leaks, turn the boiler off, drain the
system whilst hot.
Remove functional case door and ensure there are no
condensate leaks from around the boiler or the
condensate drainage system.
Refit functional case door ensuring a good seal.
Refill the system and add the correct concentration of
FERNOX COPAL or GRACE DEARBORN SENTINEL Xl
00 water treatment. On sealed systems adjust to the
correct cold fill pressure.
If a by-pass circuit is fitted the by-pass valve should be
adjusted with the boiler operating under minimum load
conditions to maintain sufficient water flow through the
boiler to ensure that the overheat device does not
operate under normal operating conditions.
BOILER CONTROL SWITCH
In the mid i.e. “ ” position holds the boiler in a STANDBY
condition. In the
“ ”
position allows the boiler to operate
automatically but controlled at a maximum flow
temperature of 60
0
C. In the “
” position the boiler will
operate automatically at a maximum flow temperature of
82
0
C.
PUMP OVER
-
RUN TIMER
Will keep the pump running for approximately 3 minutes
after burner shutdown to dissipate heat left within the
boiler. The times are pre-set and no adjustment is
possible.
OVERHEAT PROTECTION DEVICE
The overheat protection device is pre-set and no
adjustment is possible. Manual resetting is required if an
overheat condition occurs. The reset button is situated in
the front of the boiler control box.
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 ...