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The pressure-relief device is to be operated
regularly to remove lime deposits and to verify
that it is not blocked; (see page 14 for more
details)
How hot water can be drained. (see page 11
for more details)
The type or characteristics of the pressure-
relief device and how to connect it; (see Figure
1 for details and Figure 9, page 17 for exploded
view)
A discharge pipe connected to the pressure-
relief device is to be installed in a continuously
downward direction and in frost free
environment; (see page 14 for details)
Recommended minimum water pressure 0.08
MPa (0.8 bar). Max water pressure1.6 MPa (16
bar) see table 1 page 5.
If the supply cord is damaged, it must be
replaced by the manufacturer, its service agent
or simularly qualified persons in order to avoid
a hazard.
2.1 General safety warnings
DANGER
This appliance is unvented and as such
becomes pressurised when in operation. The
combination of pressurisation and hot water
could lead to serious physical injury if the safety
instructions in this manual are not adhered to.
WARNING
Only competent persons
`
received
permitted to work on the appliance and
the installation.
Do not tamper with any of the safety
`
valves or controls supplied with the
appliance.
Before any work, switch off the mains
`
supply to the appliance.
4
2. Safety
adequate
training
CAUTION
Do not operate the immersion heater until the
appliance has been filled with water.
2.2 Recommendations
WARNING
When handling the unit, take appropriate
precautions for the weight of the unit. Weights
can be found in section 3, p5.
CAUTION
Annual maintenance is recommended to be
carried out by a competent person, see section
9, page 17.
2.3 Specific safety instructions
WARNING
WARNING
having
are
If
water
discharges
`
temperature/pressure relief valve on
the appliance, turn the appliance off.
DO NOT turn off any water supply.
Contact a competent installer for
unvented water heaters to check the
system.
DO NOT tamper with any of the safety
`
valves fitted to the system. If a fault
is suspected contact a competent
installer.
DO NOT bypass the thermal cut-out(s)
`
in any circumstances.
This appliance is supplied with a
`
factory temperature setting of 54 o C for
optimum energy efficiency. However, in
some applications to aid in the control of
legionella it may be necessary to reset
this to a higher temperature. It is the
responsibility of the installer and end
user to ensure that where applicable the
requirements of the "Approved Code of
Practice L8: The control of legionella
bacteria in water systems" are met.
from
the
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