Table of Contents
Advertisement
4.0 COMMISSIONING
4.1
Do not switch on the electrical supply until the unit has been filled with
water and checked for leaks.
4.2
Check that all installation and electrical requirements have been met.
4.3
Check that all water and electrical connections are tight.
4.4
Open a hot water tap and turn on cold water supply to the heater.
4.5
Allow unit to fill and leave hot tap running for a short while to purge any
air and flush out the pipework. Close the hot tap and check the system
for leaks.
4.6
Switch on the electrical supply. The indicator light will illuminate during
heating. When the set temperature is reached the indicator light will go
out.
5.0 EXPLANATION TO USER
Following Installation and Commissioning of the water heater the operation
should be fully explained to the user:
5.1
The UTC99 vented water heater stores water at the temperature set
on the adjustable thermostat. This can be set to provide temperatures
in the range of 10 to 70°C. To avoid any risk of freezing when the
heater is not in use for long periods during the winter months, do not
switch off the electrical supply and set the thermostat to its minimum
position. N.b. this will not protect other system pipework.
5.2
The set temperature can be adjusted by rotating the knob located in
the terminal cover. It is possible to lock the thermostat knob in either
the 'mid-range' or a 'hot' position by following the procedures below.
Always switch off the electrical supply before removing the terminal
cover.
5.3
Setting the 'mid-range' position:
Rotate the thermostat knob to the mid position. Remove the terminal
cover using a large flat-bladed screwdriver to depress the three snap
lugs located in the three top rectangular depressions. Holding the
thermostat knob in position, turn the terminal cover over and remove
the backing disc from the underside of the cover. Turn the backing disc
over and refit to the knob, ensuring the notch locates with the boss on
the underside of the cover. Refit the terminal cover and the thermostat
will now be locked in the 'mid-range' position.
9
Advertisement
Table of Contents
