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Installation instructions & user manual
9120-34378 v1.00 Sept 2020 - ZIP DEX Next / DEX12 Next
Technical support
Tel: 0345 6 005 005 email: [email protected] www.zipwater.co.uk
Safety instructions
To observe additionally for pressureless installation:
• The water outlet behind the devices must not be blocked, and the water flow must not be
restricted .
• The water outlet facilities, such as shower heads must be decalcified regularly . Deposits must be
removed at regular intervals .
• Only the fittings recommended by the manufacturer may be used .
• If the appliance is exclusively connected to a single shower, only the shower heads recommend-
ed by the manufacturer may be used . No other fittings or appliances which decrease the water
flow to the shower may be installed .
• The Zip InLine is intended for connection to mains supply only . In any other case please contact
Zip on 0345 6 005 005 for advice .
• Zip Water UK cannot be held liable for any damages caused by failure to observe these instruc-
tions.
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CAUTIONS
• Optimum operation is ensured at a water flow pressure of 0 .2 to 0 .4 MPa (2-4 bar) . The appli-
ance must not be subjected to pressure exceeding 1 .0 MPa (10 bar) .
• The appliance must only be used when correctly installed and in perfect working order .
• The appliance must be installed in a frost-free room and must never be exposed to frost .
• The DEX and DBX range is not intended for use with thermostatic mixing valves or taps . If ther-
mostatic mixing valves or taps are to be used, their compatibility with the instantaneous water
heater must be verified under site operating conditions .
• The appliance must be completely filled with water before being switched on .
• Before commissioning for the first time and each time the appliance or the piping system is emp-
tied (e .g . due to work on the plumbing system or maintenance), the appliance must be purged by
opening and closing the hot water tap until all air has been eliminated from the water heater and
no more air emerges, before re-connecting to the electrical supply .
• The appliance must only be used for heating wholesome (or cat 1) water . The specific water
resistance must not fall below the required value indicated on the rating plate . The appliance
must not be used for any other purpose .
• Incoming water temperature must not exceed that stated in Technical data .
