MHS Boilers TUDOR NHRE 18, Инструкции по установке, обслуживанию и эксплуатации

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11
typical installation schematic
two Tudor water heaters in
open vented system
Secondary Circulation Pump
Isolation
Valve
Isolation
Valve
Temperature
& Pressure
Relief Valve
Non Return Valve
Drain Cock
Isolation Valve Isolation Valve
Isolation Valve
Non Return Valve
Drain Cock
Isolation Valve
T Port
Vent Valve
T Port
Vent Valve
Temperature
& Pressure
Relief Valve
fig.2
18.3 unvented or boosted
feed systems
typical installation schematic
single Tudor water heater in unvented application
Balanced Pressure Cold Water Supply
Boosted or
Mains Feed
Temperature &
Pressure Relief Valve
Set 7.0 bar & 90-95ºC
Secondary
Circulation
Pump
Isolation
Valve
Isolation
Valve
Tee piece
provided
Non
Return
Valve
Drain Cock
Tundish
Expansion
Vessel with
air charge
set 3.5 bar
Isolation Valve Isolation Valve
Pressure Limiting Valve
with Integral Strainer
Set 3.5 bar
Core Assembly with
Integral Non Return Valve
Expansion Relief Valve
Set 6.0 bar
fig.3
To install a Tudor NHRE Water Heater as an unvented hot water storage package, then a Water
Byelaws scheme approved kit of safety devices, valves and fittings complying with BS7206:1990 and
satisfying the requirements of Building Regulation G3, available from MHS Boilers Ltd must be installed to
protect the system and prevent water temperature from exceeding 100º C. The kit of parts includes as a
minimum (see check list of components 18.4), a suitably sized expansion vessel with air change preset at
3.5 bar, a pressure limiting valve preset at 3.5 bar, an expansion relief valve set at 6.0 bar, a temperature
and pressure safety relief valve set 7.0 bar and 90 - 95ºC, a core manifold assembly with integral non return
valve and a tundish.
The components must be installed as shown in fig. 3.
There must be no valves installed between the water heater and the connection to the expansion relief valve.
The connections provided for the connection of the temperature and pressure safety relief valve and
the expansion relief valve must not be used for any other purpose.
The mains water supply pressure must not exceed 12.0 bar.
TUDOR NHRE