Cleansing Hot & Cold Water And Treatment; Commissioning Mchp Unit & Boilermate; Commissioning Space Heating - Benchmark mCHP BoilerMate Design, Installation And Servicing Instructions

6.3 COMMISSIONING mCHP UNIT &
BOILERMATE
(a) Check that the mCHP BoilerMate front panel switch is in 'On' position and the
summer/winter switch is in summer position.
(b) The mCHP unit will not start i.e there will be no 240V ac start signal at BoilerMate
terminal 'SL-O' until:-
• The heating programmer calls for hot water heating and this will controller
display segment V1.1 being on (see figure 3.14), and
• Store sensors are calling for heat indicated by display segments H1.1 and H1.2
being on (see figure 6.2)
(c) Commission the mCHP unit as per manufacturer's instructions and ensure that
the flow temperature is set at maximum i.e. greater than 77
After the mCHP start sequence,which could take 8 - 12 minutes,the thermal store
will begin to heat up and the store temperature can be read from the display (see
section 3.6)
(d) Check that the mCHP boost mode and the auxiliary electric heater is functioning
correctly.This can be done when the mCHP is running and the central heating is
on by removing the top store sensor, S6 from the pocket i.e. simulating that the
store is not heating at correct rate.
This will be indicated by controller display segment H2.2 being on for model 'N'
and V2.4 on for model 'R' (See figure 6.2). When mCHP boost is active, there will
be a 230V ac signal at terminal 'SL-B' in the BoilerMate.
After this test, ensure that the sensor is inserted and secured into the
pocket.
(e) To check manual electric backup heating , move operation switch on front panel
display from 'normal' to 'switch' position. The electric backup operation can now
be observed.

6.4 COMMISSIONING SPACE HEATING

(a) The central heating is best commissioned when the store is hot and therefore
should be carried out after procedure 6.3.
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Figure 6.2
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Note: If both 'dots' are flashing then the
controller is working. However it is a
warning of limited/alternative control
functionality
COMMISSIONING 6.0
(b) Check that the front panel switch is in
o C.
(c) With flow to the central heating circuit,
(d) Wait until the heating circuit has reached
(e) Ensure that the system has been flushed
(f ) Set the programmable room thermostat as
LED Description
H1.1 Middle store sensor calling for heat
H1.2 Bottom store sensor calling for heat
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H1.3 Spare
V1.1 HW Programmer calling for heat
V1.3 CH Programmer calling for heat
V1.4 Room thermostat calling for heat
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H2.1 PHE pump on
H2.2 CH Pump on
H2.2 mCHP boost mode on
H2.3 mCHP/System pump on
V2.1 mCHP on
V2.2 Switch on / electric boost on
V2.3 Diverter valve in CH & HW mode
V2.4 mCHP boost mode on
V2.4 Diverter valve in CH mode
Page 35
'winter' position, set heating programmer
to continuous and ensure that the room
thermostat is calling for heat. This will be
indicated by display segments V1.3 and
V1.4 being on respectiveley.The BoilerMate
controller will now:-
• Switch on the central heating pump in
model 'N' and this will be indicated by
display segment H2.2 being lit.
or
• Switch on the system pump and move
the diverter valve to CH only position
in model 'R' . This will be indicated by
display segments V2.3 and V2.4 being on
respectively.
bleed every radiator and pipework high
points until air or air/water mix has been
removed.
its normal temperature of approximately
80 o C before balancing the system in the
usual way to achieve a temperature drop
between 10 and 12 C.
o
and treated.
per manufacturer's instructions supplied
with the appliance and ensure that the
room thermostat instructions (along with
the appliance) are left with the user.
Models
N & R
N & R
N & R
N & R
N & R
N & R
N & R
N only
R only
N & R
N & R
N & R
R only
N only
R only