General Requirements - Jet 120i Installation & Servicing Instructions Manual

General Requirements

IMPORTANT: This appliance can be
used by children aged from 8 years and
above and persons with reduced physical
sensory or mental capabilities or lack of
experience and knowledge if they have
been given supervisory or instruction
concerning use of the appliance in a
safe way and understand the hazards
involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not
be made by children without supervision.
Also:
- water may drip from the discharge pipe
of the pressure-relief device and this pipe
must be left open to the atmosphere; (see
page 10 for details)
- the pressure-relief device is to be
operated regularly to remove lime deposits
and to verify that it is not blocked; (see
page 10 for details)
- how hot water can be drained. (see page
15 for more details)
- the type or characteristics of the
pressure-relief device and how to connect
it; (see Figure 02 for details and Figure 05
for the installation schematic)
- a discharge pipe connected to the
pressure-relief device is to be installed in
a continuously downward direction and
in frost free environment; (see Figure 04
for details)
- details on how to set the temperature
controls for both immersion heaters and
boiler controls can be found in section
"Commissioning Instructions (see page
14 for details).
- each circuit must be protected by a
suitable double pole isolating switch with
a contact separation of at least 3mm in
both poles (see page 12 for details).
- recommended minimum water pressure
0.15MPa (1.5 bar). Max water pressure
1.6MPa (16 bar), see page 4 for details.
WARNING: Do not switch on if there is a
possibility that the water in the heater is frozen.
Siting The Unit
The cylinder must be vertically floor mounted.
Although location is not critical, the following points
should be considered:
• The cylinder should be sited to ensure minimum
dead leg distances, particularly to the point of
most frequent use.
• Avoid siting where extreme cold temperatures will
be experienced. All exposed pipe work should
be insulated.
• The discharge pipework from the safety valves
must have minimum fall of 1:200 from the unit and
terminate in a safe and visible position.
• Access to associated controls and immersion
heaters must be available for the servicing and
maintenance of the system. Where these controls
are installed against a wall a minimum distance of
250mm must be left (see Fig. 01, below).
• Each circuit must be protected by a suitable
double pole isolating switch with a contact
separation of at least 3mm in both poles.
• Ensure that the floor area for the cylinder is level
and capable of permanently supporting the
weight when full of water. (see Table 02, Page 7)
Min 250mm
Fig. 01: Siting the Unit
WALL
Min 250mm
3