Atlantic STEATITE 896236 Documentazione per l'installazione e l'uso - Pagina 5
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Mandatory installation of a safety device in a frost free location (or any
other new device which limits the tank pressure) to 850 kPa according to
the nominal pressure, with a size of 3/4'' on the input of the water heater,
respecting the local regulations .
Operate regularly the discharge of safety device to prevent scaling and
check that it is not blocked.
To drain the device switch off the power and the supply of cold water, open
the hot water faucets and manipulate the safety valve.
The pipes used must support 1 MPa (10 bar) and 100°C.
Cold Water Inlet
Cold water piping should be provided with a 350 – 500 kPa Pressure
Limiting Valve at the point of cold water connection to the water heater.
In addition to the Pressure Limiting Valve, it is a requirement of AS 3500.4
& NZBC G12 that both a Stop Valve and a Non Return Valve are installed
upstream of the Product.
No parts (stop valve, pressure reducer, etc.) must be placed between the
pressure limiting valve and the cold water inlet of the water heater, apart
from a copper pipe.
Note: Since limited water discharge from Pressure Limiting Valve is normal
in the heating operation, the discharge pipe needs be connected to
external drain.
Hot Water Outlet
Where a maximum hot water delivery temperature is specified by local,
state or federal regulations, a tempering valve shall be installed at the hot
water outlet, as required.
The included specified Pressure & Temperature Relief valve must be
installed as shown in the schematic. The PTR valve should be connected
to a drain point to accommodate discharge as a result of both water
expansion during heating and also pressure fluctuations.
The supplied PTR valve must be fitted with Teflon tape - don't use paste or hemp.
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