Benchmark SysteMate 125 97-317-26, Design, Installation And Servicing Instructions, Page: 4 / 44

Page 4
The SysteMate 2000 shown schematically above is designed to provide sealed system
space heating and mains pressure hot water at high fl ow rates when coupled to any
remotely sited, condensing or non condensing, boiler suitable for sealed heating
systems, as long as they comply with the recommendations contained in the rest
of this manual.
The SysteMate 2000 is an indirectly heated hot water only thermal store and is
supplied with the factory fi tted controls and equipment shown in Section 1.2
Technical Data.
The indirect heat exchanger is highly effi cient and designed to provide extremely
quick hot water recovery as well as back-up space heating when using ‘Switch’.
For details of how to produce SAP ratings calculations contact Gledhill Technical
Department.
Because the F & E cistern is only used to fi ll the thermal store the standard
appliance is supplied as a manual fi ll model, i,e, without a ballvalve and overfl ow,
which makes it particularly suitable for use in fl ats/apartments. A ballvalve and
overfl ow fi tting can be supplied as an optional extra if required.
1.0 DESIGN
Description
1.1 INTRODUCTION
An important feature of this product is that
hot water can be supplied directly from the
mains at conventional fl ow rates without the
need for temperature and pressure relief safety
valves or expansion vessels. This is achieved
by passing the mains water through a plate
heat exchanger. The outlet temperature of the
domestic hot water is maintained by a printed
circuit board, which controls the speed of the
pump circulating the primary water from the
store through the plate heat exchanger.
To comply with the Benchmark Guidance Note
for Water Treatment in heating and hot water
systems the installer should check the hardness
levels of the water supply and if necessary fi t
an in-line scale inhibitor/reducer to provide
protection to the whole of the domestic water
system.
If scale should ever become a problem the plate
heat exchanger is easily isolated and quickly
replaced with a service exchange unit which
can be obtained at a nominal cost from Gledhill.
For further details see Section 1.3 Hot and cold
Water Systems.
The whole system is controlled by a special
electronic control p.c.b. complete with
programmer to which an external room
thermostat can be easily connected.
The pcb also incorporates the facility to operate
the heating pump for a few seconds every few
days when the heating is not being used, to
reduce the likelihood of the pumps sticking
as well as providing a boiler pump overrun
facility.
Any sealed system automatic boiler designed
to operate on an 82
0
C fl ow and a 71
0
C return
up to a maximum of 35kW can be linked to
any suitable model of SysteMate 2000 and the
deciding factor is the space heating and the
hot water requirements of a dwelling. See
Section 1.2 Technical Data for further details.
The SysteMate 2000 is available with the option
of ‘Switch’ which will provide a 9kW electrical
emergency backup in case of failure of the
main heat source. See section 1.3 System
Details for further information.
There is no facility available to incorporate a
standard 3kW immersion heater for back up
hot water only.
Gledhill are part of the ‘Benchmark’ scheme
and a separate commissioning/service log
book is included with the product.
Remote
F&E cistern
Cold feed
Hot
Cold
Open Vent
Boiler
Expansion
Vessel
Pressure relief (safety) valve
Components fitted within
the appliance case
Automatic
bypass valve
Filling loop
Pressure gauge