NOTE:
This controls the operation of the pump-it does not
change the pump speed.
The factory setting is 2 for the boiler to operate with a room
thermostat fitted.
It is only necessary to change the setting if an outside
temperature compensator is fitted.
Control Mode 1
-
Not recommended.
-
No room thermostat or outside temperature
control.
-
Pump switched by central heating flow
temperature.
Factory Setting
Control Mode 2
-
Room thermostat fitted.
-
Central heating flow temperature switches
the gas, the pump continues to run.
-
The room thermostat switches the gas and
the pump.
-
The pump and fan have overun times of
between 15 sec and 3 min.
Control Mode 3
-
Outside temperature compensator fitted.
The outside temperature compensator
-
switches the pump.
-
In Summer mode, the pump runs for the
domestic hot water only.
Turn the central heating temperature control knob to 'E'.
Press the 'service' button until '
--
' appears on the display.
Release the button - '4.6' will appear for 5 seconds followed by
'0.0' or '0.1'
The 'service' button will light.
20
Changing the Control Mode for Heating
Operation
Turn the central heating temperature control anti-clockwise until
2.2 appears - after 5 seconds the mode setting of 2 (factory
setting) appears.
Turn the domestic hot water temperature control knob until
mode setting 3 appears.
The 'service' light will flash.
Press the 'service' button untill ' ' appears.
The new control mode setting is stored and the ceral heating
flow temperature is displayed.
Reset the central heating and domestic water control knobs to
the user requirements.
Record the change in the Commissioning Record.
Anti-Cycle Time
This is Factory Set at 3-min.
It is not recommended that this is changed.
Switching Difference
This is Factory Set DHW at 8°
CH at 5°
It is not recommended that this is changed.
Summary of Contents for Greenstar ZWBR 11-25 A31
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