Stulz EC Tower ECD 91 - Page 123

123 © STULZ GmbH – all rights reserved EN/01.2019/G22
ec tower technical manual
1. 
2. S70) on the CPY controller to the right (M26 MAN. DRAIN).
- The steam humidifier is drained manually.
3. 
4. Switch off the unit via the master switch.
5. Switch off the circuit-breaker (F20) by turning it to setting 0.
6. Secure the air conditioning unit so it cannot inadvertently be switched back on.
7. 
8. Shut off the water supply to the steam humidifier.
9. Wait until the fan has come to a complete stop.
10. Remove the central protective grill.
11. Remove the lower front panel.
12. Remove the left and right-hand cover panels.
Installing the solenoid valve
The solenoid valve has the following designation in the circuit diagram: M10.
Installation guide
Solenoid valve
Type EV250B
1 2 3
4 5 6
© Danfoss A/S (IA-MS/ABP), 2013-12 IC.PI.200.Q1.00 / 520B5803
032R9278 032R9278
Procedure
Installing the valve body
1. Clean the feed water pipe system before installing the solenoid valve.
2. Install a mechanical fine filter in the feed water supply.
- The fine filter is provided by the customer.
3. 
side of valve).
4. Install the valve body as shown in figures (2) and (3). The valve body can be mounted at an angle of up to
max. 90 ° from the vertical.
5. When tightening the pipe connections on both the valve body and the pipe connector, hold them firmly
with a wrench (see figure (5)).
6. 