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Boiler Thermostat Setting
The BoilerMate OV-PP, SP and SP-PP may be installed with condensing or non-
condensing oil or gas boilers. These boilers should be capable of delivering primary
hot water at a minimum temperature of 80°C. To achieve the highest temperature
in the thermal store and therefore maximise its performance the maximum boiler
control thermostat setting must be selected.
Store Thermostat Setting
The store thermostat should be set at 75°C to achieve the maximum domestic hot
water and the temperature set point of 50-55°C. We recommend this is checked
during the commissioning procedure due to the tolerances on this type of
thermostat.
CH control description and Thermal Store charging.
BoilerMate OV - 1 zone
The timer (programmer) is the key control for the system.
When the Central heating program is calling 240 volt AC is supplied to the Room
thermostat.
If the Room thermostat is closed circuit the 240 volt AC is supplied to the heating
zone valve motor. The motor runs which closes the incorporated micro switch and
240 volt AC is supplied to the central heating pump causing it to run. At the same
time 240 volt AC is supplied from the zone valve micro switch to the thermal store
control thermostat.
When the Hot water program is calling 240 volt AC is supplied to the Thermal store
thermostat.
If the Thermal store control thermostat is closed circuit, then 240 volt AC is supplied
to the boiler switch live and the boiler pump causing it to heat the thermal store.
If the Delay timer is fitted and once the thermal store control thermostat is open
circuit, the boiler pump with continue to run for a short period of time to remove any
residual heat from the boiler.
The Boilermate OV is placed on the market with one zone valve. If a second zone
valve is required it can be purchased as a kit. [BCK006]. Please see the wiring diagram
on the next page for the required modifications to the above diagram.
BoilerMate OV – 2 zone
The two-zone space heating system runs in a similar manner to the single zone.
However, in this system both heating zone thermostats are supplied with 240 Volt AC
simultaneously. If independent timing of the second zone is required, then another
programmer or programmable room thermostat will be required. Alternatively, two
programmable room thermostats can be used and the heating channel on the main
programmer left permanently on.
When the Hot water program is calling 240 Volt AC is supplied to the Thermal store
thermostat and if the Thermal store control thermostat is closed circuit, then 240
Volt AC is supplied to the boiler switch live and the boiler pump causing it to heat
the thermal store. If the Delay timer is fitted and once the thermal store control
thermostat is open circuit, the boiler pump with continue to run for a short period of
time to remove any residual heat from the boiler.
BoilerMate SP PP – 2 zone
The SP two-zone space heating system runs in
the same manner as the OV two zone; where
both heating zone thermostats are supplied
with 240 Volt AC simultaneously. If independent
timing of the second zone is required, then
another programmer or programmable room
thermostat will be required. Alternatively,
two programmable room thermostats can be
used and the heating channel on the main
programmer left permanently on.
The difference is that the boiler and boiler
pump will always fire when there is a central
heating demand.
When the Hot water program is calling 240 Volt
AC is supplied to the Thermal store thermostat
and
If the Thermal store control thermostat is
closed circuit, then 240 Volt AC is supplied
to the thermal store pump causing ti to run;
and to the thermal store zone valve motor.
Once the motor has run the thermal store’s
micro switch will close and 240 Volts Ac will be
supplied to the boiler and boiler pump.
In addition, the delay timer will operate as
described above; if fitted.
INSTALLATION
CENTRAL HEATING
Summary of Contents for BOILERMATE OV PP
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