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7
COMMISSIONING
The appliance and installation must be commissioned as described below and registered with the
manufacturer along with proof of purchase.
FAILURE TO COMMISSION, REGISTER AND ANNUALLY SERVICE THIS
PRODUCT WILL INVALIDATE ALL GUARANTEES
7.1
Adjustment of Immersion Thermostat
Isolate ALL electrical supplies to the appliance before removing the immersion cover.
All cylinders are supplied with one or more immersion heaters to
allow the cylinder to be heated electrically. Each immersion heater
has an immersion thermostat, the temperature of which is
adjustable between
nominally
20°C and 70°C. Remove the
immersion heater cover and turn the control dial anticlockwise to
increase temperature, and clockwise to decrease.
Each immersion thermostat also has a built-in manually reset
safety thermostat which will ‘lock out’ in the event of the cylinder
overheating and which will need to be reset in order to restore
operation. Remove the immersion heater cover and depress the
reset button to restore operation.
In the event of a lockout situation occurring, it is vital to determine
and rectify the cause of lock out.
7.2
Commissioning
Isolate all electrical supplies until otherwise instructed during the commissioning process.
1
Prior to filling the cylinder (or with the mains isolated and a hot tap open), check the
expansion vessel bladder pre-charge
– it should be 3.0 bar.
2
Check that all connections are tight and correctly configured.
3
Fill the cylinder and system as follows:
Open the main stopcock and fill the cylinder, ensuring the connections are water
tight.
Open successive hot taps to remove trapped air.
Leave each tap open for a few minutes in order to flush out air and debris.
Close all taps.
Check all strainers for obstructions.
4
Drain the cylinder as described in Section 7.3.
5
Refill the cylinder as above, closing each tap when water flows freely.
6
Manually operate (by rotating the knob) both the expansion relief and the temperature
and pressure relief valves for a short period to remove trapped air from behind the valve
seat and to prove the correct function of the discharge arrangement.
7
Check all joints for leaks and rectify as necessary.
8
Check that all immersion and control thermostats are set to the desired temperature.
Control dial
Reset
button
Typical Immersion heater
thermostat shown.
