11
Installation instructions & user manual
9120-34373 v4.00 Nov 2018 - ZIP DBX DEX
Technical support
Tel: 0345 6 005 005 email: [email protected] www.zipwater.co.uk
INSTALLATION
• The appliance must be installed via a permanent
connection.
• Heater must be earthed!
• A maximum cable size must be observed: 10 mm
2
(16 mm² for DEX12).
• Take care to protect the wiring from damage during
installation and ensure that the wiring is not directly
accessible after installation.
• The appliance must be permanently connected to the
supply through an isolating switch with a contact separation
of at least 3 mm in all poles and be protected by a suitably
rated RCD.
Structural prerequisites
Electrical connection
Wiring diagram
Fig. 7
Fig. 6
Only undertaken by a competent person familiar with
electric instantaneous water heaters !
Please observe:
• The electrical installation must comply with current IEE
regulations and relevant Local Authority requirements
• The rating plate and technical specifications
•
The appliance must be earthed!
1. Electronic circuitry
2. Heating element
3. Safety pressure cut-
out
4. Terminal strip
5. Safety thermal cut-out
2
1
4
5
3
3-phase
Single phase
2
1
4
5
3
Note: Fasten the fittings with caution, to avoid damage to
the valves or the piping system.
For surface mount connection, the two ½ inch screw-in
nipples and the ½ inch seals must be screwed into the ½ inch
union nuts of the hot-water and cold-water connectors. The
two ½ inch caps of the side outlets of the hot-water and
cold-water connectors must be removed and screwed onto
the open end of the screw-in nipples. The hot-water and
cold-water connectors must then be screwed into the
3
/
8
inch
union nut of the appliance and delivery pipe, together with the
3
/
8
inch seals.
For surface mount connection, it is advisable to mount the
appliance at a distance as illustrated in Fig. 6, using the
spacer sleeves supplied. It should therefore be noted that
the two fixing holes near the lower pipe connections are also
used.
The flared end of the pipes must be screwed into the ½ inch
side outlets of the hot-water and cold-water connectors with
½ inch union nuts and ½ inch seals. The holes required for
the pipes must then be broken out of the housing with the aid
of a blunt implement.
In case of direct connection please note: Ensure the line
strainer is inserted into the cold water connection!
