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Hamworthy Heating Limited Wessex Modumax mk3 500001309-A
LIGHTING INSTRUCTIONS
Carry out the following procedure for each boiler
Ensure the electrical mains supply to the boiler module
is switched on and that any external controls are
calling for heat (Time clock, BMS etc.).
Depress blue On/Off button (7) The button will
illuminate and the screen will update data. When the
update is complete the screen will enter normal boiler
mode.
To set Time and date
Press
OK
– To enter
PROG
screen - Time of day and
date will be highlighted on screen.
Press
OK
– Hours/minutes will be shown on screen.
Press
OK
– Hours will flash – Use rotary knob to enter
the hours required – Press
OK
to enter
Press
OK
– Minutes will flash – Use rotary knob to
enter minutes required – Press
OK
to enter
Turn rotary knob – Day/month will be shown on screen
Press
OK
– Month will flash – Use rotary knob to enter
month required – Press
OK
to enter
Press
OK
– Day will flash – Use rotary knob to enter
day required – Press
OK
to enter
Turn rotary knob – Year will be shown on screen.
Press
OK
– Year will flash – Use rotary knob to enter
year required – Press
OK
to enter
When finished press
ESC
to return to
PROG
screen –
Press
ESC
to return to Main screen
To set time programme for heating circuit
.
Press
OK
– to enter
PROG
screen – Turn rotary knob
to highlight Time prog heating circuit 1
Press
OK
– Turn rotary knob - 1st phase on will be
shown on screen
Press
OK
– Time will flash – use rotary knob to enter
time required – Press
OK
to enter
Turn rotary knob – 1st phase off will be shown on
screen.
Press
OK
– Time will flash – use rotary knob to enter
time required – Press
OK
to enter
Repeat process for 2nd and 3rd phases.
When finished press
ESC
to return to
PROG
screen –
Press
ESC
to return to Main screen.
To set boiler flow setpoint for heating circuit 1
Press
OK
– to enter
PROG
screen – Hold
INFO
button
for 5 seconds
Use rotary knob to select
ENGINEER
-Press
OK
Use rotary knob to select
Heating Circuit 1
- Press
OK
Use rotary knob to select line
741
Press
OK
– Setpoint will flash – Use rotary knob to set
value required – Press
OK
to enter
When finished press
ESC
to return to
PROG
screen –
Press
ESC
to return to Main screen.
To light the boiler
Use the mode button (3) to select the desired operating
mode. The boiler should go through it’s sequence and
light.
If sequence does not begin, check all external
controls and safety interlocks are correct.
Lockouts
Should a lockout occur, a code will be displayed on the
screen.
A red LED is displayed constantly when a non-blocking
fault is detected (following correction of the fault, the
LED goes off).
The LED flashes when a blocking fault is detected (in
this case, the LED goes off after the fault has been cor-
rected and the reset button on the interface
has been pressed),
Should a Overheat lockout occur, a code will be dis-
played on the screen. The overheat thermostat will
automatically re-set after sufficient temperature
drop. To reset an Overheat condition, the boiler
must be allowed to cool down. The reset button (1)
must be depressed to clear the lockout condition.
If the problem persists, seek expert advice from your
installer or Hamworthy Heating Ltd.
Shutting Down the Boiler
To shut the boiler off for short periods i.e. 2 to 3 days,
carry out the following procedure for each module of the
boiler -
Push the Mode button (3) until the Standby mode is se-
lected
Alternatively the boiler can be put into setback operation
by selecting the ‘Reduced’ mode.
Note
:- During periods of intense cold weather, do not
switch off the boiler module electrical mains supply, this
will permit the system frost thermostat to function and
protect the system.
To shut the boiler off for longer periods i.e. during sum-
mer periods, carry out the following procedure for each
module of the boiler -
1) Switch the boiler module off as described above.
2) Depress the blue On/Off button (7)
3) Turn the main gas service valve off.
Note
:- During periods of intense cold weather and with
the boiler shut down for prolonged periods, the com-
plete system should be drained (including the boiler). A
notice should be placed on the boiler highlighting the
fact that the system has been drained down.
The gas service valve should not be used, except in
emergencies, or for long periods of shutdown or during
servicing.
