Installation
Requirements
• These instructions must be read and fully understood before commencing the
installation. If in doubt, or in need of further guidance please ring Zip on 0845 602
4533.
• Zip InLine water heaters must be installed by a competent person familiar with
electric instantaneous water heaters.
• Installations must comply fully with UK Water Regulations and any Local Authority
requirements.
• The electrical installation including earthing and cross bonding should comply with
current IEE regulations and any Local Authority requirements.
• Zip InLine water heaters must be installed according to the specification on the rating
plate and the technical specifications.
• The appliance must be permanently connected to the electrical supply through an
isolation switch having a contact separation of at least 3mm on all poles.
• To protect the appliance, a circuit breaker must be fitted with a rating suitable for the
nominal current of the appliance.
• The cross sectional area of the connection cable must be in accordance with the
power rating of the appliance and the specific requirements of the installation site up
to a maximum cable size of 10mm
2
.
• Take care to protect the wiring from damage during installation and ensure that the
wiring is not directly accessible after installation.
• Check that the power supply is switched off prior to electrical connection.
•
This appliance must be earthed.
Installation site
• The installation site must be free from frost at all times.
• The appliance is designed for wall mounted installation. CEX-O for over-sink
installation must be installed with the water connections downward. CEX-U for
under-sink installation must be installed with the water connections upward.
• The appliance complies with protection class IP25 for over-sink installation,
protection class IP24 for under-sink installation and may therefore be installed in
protection zone 1.
• In order to minimise thermal losses, the distance between the appliance and the
outlet fitting should be as short as possible. Recommended maximum distance 2
metres.
• For maintenance work a shut off valve should be installed in the water supply line
to he heater.
• Hot and cold water connecting pipes should be WRAS approved and of copper
or steel construction. Plastic pipes may only be used if conforming to DIN 16893
Series 2. The hot water pipes must be thermally insulated.
• The specific resistance of the supply water must be at least 1,100
Ω
cm at 15°C.
The specific resistance can be checked with the local water supply company.
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CEX-O & CEX-U Installation, Maintenance and User Instructions - August 2011
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