Technical data

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CTC EcoZenith i250
General Information
9. Operation and
Maintenance
When the installer has installed your new system, you should check along
with the installer that it is in perfect operating condition. Let the installer show
you where the switches, controls and fuses are so that you know how the
system works and how it should be maintained. Bleed the radiators after
around three days of operation and top up with water if required.
Boiler and radiator system safety valve
Check around four times a year that the valve is working by manually turning
the control. Check that water is coming out of the safety valve discharge.
Mixing Valve
The mixing valve is operated automatically from the control system, ensuring
that the radiators reach the correct temperature, no matter what season it
is. However, where a fault occurs, you can operate the valve by pulling out
the knob on the motor and turning it clockwise to reduce the temperature or
anticlockwise to increase it.
Draining the tank
The CTC EcoZenith should be disconnected from the power source when
it is being drained. The drain valve is positioned at the bottom left of the
unit when viewed from the front, behind the front of EcoZenith. When
draining the whole system, the mixing valve should be fully open, i.e. turned
anticlockwise as far as it will go. Air must be supplied to the closed system.
Shut-down
The CTC EcoZenith i250 is shut down using the operating switch. If there
is a risk of the water freezing, all the water should be drained from the heat
pump and the radiator system (see drainage above).
The DHW circuit, which contains around five litres, must also be emptied.
Disconnect the cold water connection to CTC EcoZenith i250. Feed a hose
into the cold water connection to CTC EcoZenith i250. The hose must go
down to the bottom of the coil for all the water to be drained. Draining is
carried out by siphoning out the water.
!
Do not forget to re-
set the mixing valve
to automatic mode.
increase decrease