CTC Union EcoZenith i555 Pro 1x230V, Installation And Maintenance Manual

Page: 142 / 168

142 CTC EcoZenith i555 Pro
(Y21) 3-way valves, DHW
230 V 1N~
2.5 m cable 1.5 mm²
When relay output A18 is powered, the fl ow is to the upper tank for DHW
charging. When it is not powered, the fl ow is to the lower tank.
The 3-way valves are connected to the following terminal blocks:
(Y21) 3-way valves, DHW
Relay output (black): pole A18
Phase (brown): pole A19
Neutral (blue): pole A20
Check the function by test running the 3-way valve in the "Installer/Service/
Function test" menu in the control system.
In the “DOWN” position on the function menu, port
▲
should be open (turn
the knob on the motor clockwise, CW). In the “UP” position, port
■
should
be open (turn the knob on the motor counterclockwise, CCW).
The motor is fi tted to the 3-way valve by a screw. To unfasten the motor:
remove the knob by pulling it off, unfasten the screw and remove the motor.
To prevent faults, turn the actuator and 3-way valve to the starting position
for fi tting as shown in the fi gures. Pull out the knob on the actuator and turn
to the central position.
Port
●
should be completely open; ports
■
and
▲
should be partially open.
Ensure that the groove in the white shaft coupling is in position as shown
in the fi gure. The 3-way valve and actuator can then be fi tted together as
shown in the fi gure or turned in 90-degree steps relative to each other.
If ports
▲
and
■
have been shifted during the hydraulics connection, the
motor can be reconnected to change its direction of rotation. This is done
using two jumpers inside the motor. NOTE! The direction of rotation
cannot be changed by swapping the black and brown cables.
Knob
Actuator
Groove in shaft coupling
Valve