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2. Safety
2.1 General safety warnings
DANGER
This cylinder 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 having received
adequate training are permitted to work
on the appliance and the installation.
`
Do not tamper with any of the safety
valves or controls supplied with the
cylinder.
`
Before any work, switch off the mains
supply to the appliance and the water
mains.
`
Do not switch on if there is a possibility
that the water in the cylinder is frozen.
CAUTION
Do not operate immersion heaters until the
cylinder 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, table 1 & 2, page 5
& 6.
CAUTION
Annual maintenance is recommended by a
competent person.
The HWA Charter Statement requires that all members adhere to the following:
`
To supply fit for purpose products clearly and honestly described.
`
To supply products that meet, or exceed appropriate standards and building and water regulations.
`
To provide pre and post sales technical support.
`
To provide clear and concise warranty details to customers.
4
2.3 Specific safety instructions
WARNING TO USER
`
If water discharges from the temperature/
pressure relief valve on the cylinder shut
down the boiler/immersion heaters. 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.
- Water may drip from the discharge pipe of
the pressure-relief device and this pipe must
be left open to the atmosphere; (see page 21
for more details)
-The pressure-relief device is to be operated
regularly to remove lime deposits and to verify
that it is not blocked; (see page 21 for more
details)
- How hot water can be drained. (see page 25
for more details)
- The type or characteristics of the pressure-
relief device and how to connect it; (see Figure
6, page 13 for details and Figure 10, page 16)
- 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 16, page 13 for
details)
Details on how to set the temperature
controls for both immersion heaters and boiler
controls can be found in section "Installation
Instructions Figure 14, page 23.
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