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InstallatIon
Prestige Excellence
1. Domestic cold water isolation valve
2. Non-return valve
3. Safety valve
4. Pressure reducer
5. DHW expansion vessel
6. DHW temperature control valve
7. Hot water tap
prestIge excellence dhw connectIon
The Prestige Excellence can be connected directly to the DHW circuit.
Flush the system before connecting the DHW.
The system must be equipped with an approved safety unit including a 7 bar
safety valve, a non-return valve and an isolation valve. (Temperature and
pressure relief valve required in the UK).
When the operating pressure exceeds 6 bar a pressure reducer must be
installed before the safety unit.
During the heating process, the domestic water expands and the pressure
increases. As soon as the pressure exceeds the safety valve setting, the valve
opens and discharges. The use of a DHW expansion tank (minimum 2 litres)
will avoid a discharge of water and reduce water hammer.
Vent the cylinder by opening a hot water tap. Warning: the simultaneous
evacuation of water and air may cause spluttering.
The hot water can reach temperatures greater than
60°C. This can lead to risk of burns.
Therefore, the installation of a temperature control
valve on the hot flow immediately after the appliance
is advised.
The use of stop taps on the DHw system can cause pressure
waves on closing. To avoid this use devices to alleviate
water hammer.
factory
description
10
t plus = temperature increase of
primary flow during domestic hot
water mode
0
0 = domestic hot water priority mode
1 = in parallel
Adjustment of domestic
hot water production
temperature.
