Atmos Multi 24/80, Инструкция по установке и обслуживанию

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ATMOS MULTI version 2002 Page 26
The cold water inlet to the boiler must be made via
the UV3 manifold. The properties hot water supplies
are connected to the boiler via the 15mm diameter
hot water outlet connection.
The boiler's minimum domestic hot water
temperature setting is 60°C., the installation of a
thermostatic mixing valve is recommended to reduce
the hot water temperature at the tap.
7.9 Hot water secondary circulation.
While there is no separate secondary return
connection on the boiler, a secondary re -circulation
loop may be installed. Where required, the
secondary return should be taken to the cold water
feed of the storage tank, immediately after the UV3
manifold. The return must not pass through the UV3
manifold. If the secondary return loop has a volume
in excess of 1 litre, a larger potable expansion vessel
should be used. Contact Atmos Heating Systems
for further advice.
A non-return valve must be fitted to the return loop
to prevent the back flow of cold water to the hot
water taps. (Fig 20a
)
Figure 20a Hot water secondary circulation
7.10.Connecting the gas supply.
The gas pipe inlet connection is located on the
underside of the appliance being colour coded in
yellow. (Fig 21)
Figure 21: Gas inlet connection
Check the boiler's data plate to ensure that the
appliance has been set for the correct gas supply.
The boiler is available for either Natural Gas (G20) or
propane (G31).
For Natural gas the supply pipe must have a
minimum diameter of 22mm. The meter governor
should deliver a dynamic pressure of 20mbar for
natural gas or 37mbar for propane.