Thermsaver unvented water heater, Руководство по установке

Страница: 4 / 12

4
STANDARD ENERGY LOSSES
The heat loss of each Unvented Unit while
maintaining the temperature of the stored water at 65 degrees
Celsius. (See performance table below).
1) Tests carried out by BBA. Slight variations may occur with
changes to water mains supply pressure
Performance
Nominal Heat up Heat up Reheat Reheat Heat loss in
Capacity Model IDH Model DH Model IDH Model DH 24 hrs
Litres Mins Mins Mins Mins kw/hr
80 33 64 23 53 1.12
130 28 115 21 90 1.50
150 33 138 24 104 1.82
175 27 167 24 124 2.10
215 35 212 30 153 2.64
255 42 263 35 184 2.73
305 50 313 42 220 2.88
SITING THE UNIT
The unit can be placed anywhere convenient. Because it is
connected directly to the mains water supply it is equally efficient
on any floor – ground, first or second. Avoid areas that may be
subject to frost. Try to keep pipe runs as short as possible for
maximum economy, especially hot water discharge pipes running
down from the unit.
The unit can be fitted into a conventional airing cupboard and
does not require any additional insulation.
ALL UNVENTED VESSELS MUST BE STORED VERTICALLY
CHECK WATER PRESSURE & FLOW RATES
We suggest 1.5 bar pressure & 15 litres / minute flow rate to be the
minimum requirements for satisfactory operation. Less than this
the unit will still operate but you will not be able to run two, or
more, outlets at the same time. 85% of all U.K homes have more
than 2-bar pressure.
The mains supply must not exceed 16 bar. If it does a special
pressure-reducing valve will be required.
●
1 Element on IDH indirect models up to 305 litres and 80 litre
DH direct model
●
2 Elements on DH direct models from 130 up to 305 litres.
Additional elements from 215 to 305 litres are available on
request.
●
Cold-water control valve comprising line strainer, check valve,
pressure reducing valve set to 3 bar
●
Expansion relief valve with non return valve set at 6 bar
●
Tundish 15mm x 22mm F x F
●
Temperature / Pressure relief valve set at 90 degrees Celsius
and 7 bar pressure relief (factory fitted)
●
Motorised valve (indirect units only)
●
Cylinder thermostat-factory fitted to cylinder, maximum setting
85 degrees Celsius (indirect units only)
●
Thermal cut out set to operate at 87 degrees Celsius plus or
minus 3 degrees (indirect units only)
●
Expansion vessel capacity ranges as shown in the table below: -
Tank Size
80 to 130 Litres
150 to 215 Litres
255 to 305 Litres
Expansion Tank Required
12 Litres
18 Litres
25 Litres
2) These figures relate to a 45 degree differential between the
stored water and ambient temperature
WITH YOUR UNVENTED CYLINDER
THE FOLLOWING IS SUPPLIED AS STANDARD
Before commencing installation check that all the components of
your Unit are contained in the kit.
●
3KW Incoloy 825 heating element-incorporating thermostat to
70 degrees Celsius and resetable safety cut out set at 80
degrees Celsius
UNVENTED INSTALLATION INSTRUCTIONS
WARNING
: Under no circumstances must the factory fitted temperature pressure relief valve be removed. This will totally invalidate any
guarantee or claim. The cold-water inlet valve assembly must be fitted or the unit will not perform satisfactorily.
DO NOT ATTEMPT TO VENT THE PRIMARY CIRCUIT THROUGH THE UNIT.
All boilers should be installed to manufacturers instructions and the primary circuit through the unit must be pumped.