gledhill ElectraMate 2000, Инструкции по установке и обслуживанию

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1.3 SYSTEM DETAILS
Use in Hard Water Areas
The patented control system offers a
sophisticated level of pump speed control and
will help prevent the formation of scale. This
prevents domestic hot water from exceeding
55°C for most of the operational times of the
appliance.
The pre-set temperature of approximately 55°C
is not adjustable.
To comply with the Benchmark Guidance
Note for Water Treatment in Heating and
Hot Water Systems the installer should check
the hardness level 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. See Appendix C for
a copy of the relevant part of the Benchmark
Guidance Note.
When specifying this appliance we would
recommend that for hardness levels above
280ppm (mg/l) advice is obtained on the type
of in-line scale inhibitor/reducer to be used
from one of the Water Treatment companies
listed in the Benchmark Guidance Note (see
Appendix C).
Hot and Cold Water System
General
A schematic layout of the hot and cold water services in a typical small dwelling is
shown below. ElectraMate 2000 will operate at mains pressures as low as 1.5 bar
and as high as 5 bar although the recommended range is 2-3 bar. All pressures must
be achievable when the local demand is at its maximum and be measured at the
connection to the appliance. It is also important to check that all other equipment
and components in the hot and cold water system are capable of accepting the mains
pressure available to the property. If the mains pressure can rise above 5 bar or the
maximum working pressure of any item of equipment or component to be fitted in
the system, a pressure limiting (reducing) valve set to 3 bar will be required.
No check valve or similar device should be fitted on the cold water supply branch to
the ElectraMate 2000.
The hot water flow rate from the ElectraMate 2000 is directly related to the adequacy
of the cold water supply to the dwelling. This must be capable of providing for those
services, which could be required to be supplied simultaneously, and this maximum
demand should be calculated using procedures defined in BS 6700.
If a water meter is fitted in the service pipe, it should have a nominal rating to match
the maximum hot and cold water peak demands calculated above in accordance with
BS 6700. This could be up to 50ltr/min in some properties.
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1.0 DESIGN