gledhill SysteMate 125, Installation And Servicing Instructions

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Page 26 Page 27
SY
STEMA
TE
2000
When commissioning the system
• If the boiler is range rated, then adjust it to the maximum heat input.
•
Check the boiler thermostat is set to maximum.
•
Set the boiler pump speed so that the temperature difference across the
boiler is about 11°C - when the space heating is off.
•
Balance the heating system and set the heating system pump speed so that the
temperature difference across the flow and return is not greater than 11°C.
Because the A.C.B is able to adjust to suit the
water temperatures delivered by the boiler the
thermostat should always be set at maximum
during commissioning.
The temperature settings established during
commissioning can be checked using push
button switches sw1 and sw2 on the PCB as
described in section 3.3 Fault Finding.
The clock/programmer provided on the
appliance controls the heating system only
and should be set to suit the householders
requirements using the instructions shown on
the separate leaflet and the label on the front
of the appliance. If the appliance is fitted with
Switch (see page 17 and 25) the boiler should
be switched off and Switch operated to ensure
it is working correctly.
• When the selector knob is not in normal
position, the PCB, room thermostat and
the time clock are electrically isolated.
• When the selector knob is in HW only
position the plate heat exchanger pump
will run continuously at full speed.
• When the selector knob is in the HW and
HTG position, the plate heat exchanger
pump and the heating pump will run
continuously.
2.3 COMMISSIONING
2.0 INSTALLATION
The control system is now initialised. The operation of the controls can now be
checked.
1. Horizontal LED bar 2 ‘store’ will be lit.
Boiler and boiler pump will be running and green LED’s 1 and 2 on the
A.C.B will be switched on.
Note: The controls within the A.C.B will not allow the heating system to function
until the store temperature has reached 64°C. Therefore although the LED bar 1
‘HT’ will light when heating is switched on, the heating pump (Green LED -3) will not
switch on if the store temperature is less than 64°C. Time will need to be allowed for
this to happen during initial commissioning. This will vary depending on the boiler
size and the model of the SysteMate 2000 being used.
2. Once a temperature of 64°C has been reached on the thermal store, switch on
space heating clock/programmer and room thermostat.
•
Horizontal LED bar 1 ‘HT’ will light.
•
Green LED 3 on the A.C.B will switch on.
Heating pump will run.
3. Switch off space heating on clock/programmer or room thermostat
•
Horizontal LED bar 1 ‘HT’ will switch off.
•
Green LED 3 on the A.C.B will switch off.
Heating pump will switch off.
4. Open the hot tap
•
Horizontal LED bar 3 ‘DHW’ on the LED display will light.
•
Domestic hot water pump will run.
5. Close the hot water tap
•
Horizontal LED bar 3 will switch off
•
Domestic hot water pump will continue to run for a short period of time before
switching off.
6. The A.C.B incorporates a 3 minute boiler pump overrun facility. Check green
LED 2 remains lit for this period of time when the boiler switches off i.e. the
thermal store reaches temperature.
The control functions have now been checked.
Let the boiler heat the store and when the store is satisfied, i.e. green LED’s 1 and 2
on the A.C.B are off, the radiator circuit and hot water can be checked and balanced
in the normal way.
The boiler thermostat should be left at maximum for optimum performance/
efficiency.
NOTE : When using the SysteMate with a
Keston C25 comply with the following :
The heating circuit and boiler circuit pumps
in the SysteMate must not be disconnected.
Although it is not necessary, the pump
in the boiler may be disconnected (after
consultations with the manufacturers).
The speed of the boiler circuit pump in
the SysteMate should be adjusted to give
about a 15ºC temperature rise across the
boiler. However, if this starts circulation
in the heating circuit when the heating is off,
the speed should be increased.
The speed of the heating circuit pump
in the SysteMate should be adjusted to
give about an 11ºC temperature difference
across the heating circuit.
• Check the DHW plate heat exchanger pump
is set to maximum.
• Check that there is no overflow when
the whole of the system is fully up
to temperature.
• Check that the heating system pressure is not
greater than 2.0 bar when the whole of the
system is up to temperature.
• The domestic hot water pump should always
be set at pump speed 3.