Supplied By www.heating spares.co Tel. 0161 620 6677
Page 5
ELECTR
AMA
TE
2000
1.0 DESIGN
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1
1.1 INTRODUCTION
The ElectraMate 2000 has been designed to utilize the latest technology to provide
mains pressure hot water and traditional wet central heating from conventional
radiators utilising off-peak electricity. Two sizes are available to suit different property
types/sizes.
For optimum efficiency it is important that the best off-peak tariff is available, and a
minimum of Economy 10 is recommended (see Model Selection Table below).
The ElectraMate 2000 is controlled by a microprocessor based PCB and operates as
follows.
Charging of the thermal stores
The electronic sensor monitors the store temperature and when the store is depleted
the controller starts the recharge cycle giving priority to times when off-peak electricity
is available. When the controls are enabled to recharge the store pump and heaters
are switched on and these continue to run until the store sensor is satisfied i.e. fully
charged.
The control system automatically selects the store charge temperature and control
thermostat differential to match electricity tariffs. In the summer months there is no
requirement for space heating therefore the occupant can lower the store charge
temperature by means of the summer/winter switch which will reduce the runnings
costs.
Space Heating Operation
The operation of the space heating is
controlled by user controls, a programmable
room thermostat is provided loose for this
purpose. When there is a demand for
space heating from the programmable room
thermostat the ElectraMate 2000 control
system starts the space heating pump which
circulates the preheated hot water from the
stores to the radiators. The space heating
pump continues to run as long as the heat
demand signal is present from the user
controls, other than when hot water is being
drawn.
The self-acting 3-port mixing valve controls the
space heating flow temperature to increase
the utilisation of stored energy.
Domestic Hot Water Operation
An important feature of this concept is that
hot water can be supplied directly from the
mains at conventional flow 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 (PHE), which is
heated instantaneously by the primary water
circulated by the dedicated pump through
the PHE.
The outlet temperature of the domestic hot
water maintained at a pre-set level (normally
about 50 - 55°C) by an electronic controller,
which regulates 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 fit
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 Use in hard
water areas page 12.
The self-acting 3 port mixing valve controls
the flow temperature to the PHE at a pre-set
value. This not only limits the maximum flow
temperature to the PHE but it also increases
the utilisation efficiency of the stored energy.
In large properties with design heat losses greater than the above it is possible to use
more than one appliance. However, in these situations the heating and hot water from
each appliance must serve separate zones/bathrooms in the property which each fall
within the above model selection criteria
Summary of Contents for ElectraMate 2000
Page 38: ...Supplied By www heating spares co Tel 0161 620 6677 Page 38 APPENDIX D ...
Page 39: ...Supplied By www heating spares co Tel 0161 620 6677 Page 39 ELECTRAMATE 2000 ...
Page 40: ...Supplied By www heating spares co Tel 0161 620 6677 Page 40 ...
Page 41: ...Supplied By www heating spares co Tel 0161 620 6677 ...
Page 42: ...Supplied By www heating spares co Tel 0161 620 6677 ...
Page 43: ...Supplied By www heating spares co Tel 0161 620 6677 ...
Page 44: ...Supplied By www heating spares co Tel 0161 620 6677 ...
