FireBird Enviromax Popular C20 Technical Manual page 8

2 HOUSEHOLDER
COMBI MODEL
Enviromax Combi White Cased
and Combipac Operating
Procedure
(All models)
Twin Timer Positions
(Optional Extra)
Operation Lights
Temperature
Control
CONDENSE PUMP
(WHEN FITTED)
THERMOSTAT CONTROL
DHW ON. On Indicator light.
MIN. = 60˚C.
MAX. = 80˚C.
MAX.
C˚
MID.
Inlet connecting condense pump inlet
to condense drain at base of boiler.
Out to drain.
Out to drain.
Pressure Gauge
CH. On Indicator light.
Burner Lock Out Indicator light.
High Limit Thermostat Indicator light.
MIN.
Limit
Lock
Stat.
Out
Condense Pump.
(When Fitted)
COMBI C OPERATING PROCEDURE
TO START THE BOILER FOLLOW THIS SEQUENCE:
s Turn on fuel supply.
s Switch on power supply to boiler.
s Set the boiler thermostat to the required
temperature. ( For Central Heating
Max. 80˚C, Min. 60˚C )
s Set timers - Domestic Hot Water & Central Heating.
The central heating thermostat controls the
boiler when in central heating mode only,
thus maintaining the required boiler water
temperature output for central heating.
Domestic hot water temperature is
controlled by separate non adjustable
thermostat, plus thermostatic mixing valve.
See Page 7.
Safe operation is also maintained by the burner
control system which provides the required ignition
and shut off sequence.
If the optional timer controls are fitted these will
automatically switch the boiler off and on, as and
when Cental Heating or Domestic Hot Water is
required.
THE BOILER CAN BE TURNED OFF BY ANY OF THE
FOLLOWING MEANS:
s Turn both timer switches to OFF. (WHEN FITTED)
s Turn OFF the mains electrical supply to the boiler.
WHEN SERVICING ALWAYS SWITCH OFF THE MAINS
SUPPLY TO THE BOILER
Knock Out For Firebird Twin Timer Kit.
6
Firebird Enviromax Condensing Range
SYSTEM PRESSURE GAUGE.
2
3
4
0
SYSTEM PRESSURE.