37 © STULZ GmbH – all rights reserved EN/01.2019/G22
EC TOWER TECHNICAL MANUAL
1. Switch off the EC Tower on the controller.
2. Switch off the master switch on the EC Tower.
3. Wait until the fan has come to a complete stop.
4. Secure the EC Tower so it cannot inadvertently
be switched on.
5. Afx a “DO NOT SWITCH ON” warning sign to
the EC Tower.
6. Open the door of junction box 1 using the sup-
plied triangular socket wrench.
7. Open the central front panel with air filter by
removing the ball studs at the top.
8. Pull the plastic hose out of the central front
panel.
9. Remove the central front panel.
10. Remove the lower front panel. The front panel
is secured with ball studs and can be removed
without tools.
11. Access to junction box 2: Remove the four
screws in the sheet metal cladding of junction
box 2.
Opening an Upflow unit
Plastic hose
Central front panel
with air filter
Master switch
C7000AT controller
To Next Page
Loading...
