Technical data
58
CTC EcoZenith i250
Installation
12. Pipe installation
The installation must be carried out in accordance with current standards
and regulations. Refer to the Warm and Hot Water Installation Instructions
1993. The product must be connected to an expansion vessel in an open or
closed system.
Do not forget to flush the radiator system clean before connection.
Apply all the installation settings based on the description in the chapter
“First start”.
12.1 Filling
Filling valve (no. 90, see schematic diagram on next page) is connected
to the radiator return pipe. Alternatively, the valve can be installed in the
direction of the expansion pipe. When the boiler and system are being filled
with water, the mixing valve (Y1) must be fully open. Pull out the knob on the
valve and turn it anticlockwise as far as you can. Do not forget to push and
set the knob on the valve to automatic mode after filling.
If the heat pump is not connected, connections 1 and 2 must be capped
when filling with water. (See figure)
12.1.1 Pressure drop in mixing valve
The diagram below shows a drop in pressure in the mixing valve.
Start with the heat requirement in kW (e.g. 15kW), then move vertically
to the selected ∆t(e.g. 10°C). Then move horizontally to the line for the
EcoZenith i250 mixing valve = line6.3DN20. The reading for the pressure
drop is taken from the scale directly below (4 kPa).For EcoZenith i250, see
valve DN20.