RCU50U and RCU50.2U Room Temperature Controllers Technical
Instructions
For VAV Systems
Document Number 155-327P25
Rev. 1, March, 2002
Siemens Building Technologies, Inc.
Page 9
2 × 4-inch Electrical Wall
Box Mounting
An ARG70 wall plate adapter is required to mount an RCU50U or RCU50.2U controller
to a 2 × 4-inch electrical wall box. The ARG70 wall plate adapter is included with
electrical wall box mount models.
1. Insert a small screwdriver into the bottom of the controller and press in the tab
located in center of the controller.
2. Lift the bottom of the controller from the controller base and push up to remove
cover from two tabs located at the top of the controller base.
3. Separate the controller base (5) from the controller (6).
4. Using the two screws provided, fasten wall box adapter (3) to plaster ring (2).
(Plaster ring supplied by others.)
5. Flex adapter mask (4) and snap in place inside wall box adapter (3).
6. Pull wires through plaster ring (2).
7. Fasten the controller base (5) to wall box adapter assembly (3) and (4) with the two
screws provided.
8. Follow
Drywall Mounting Steps 6 through 15.
The installation is now complete.
TH0568R1
1
3
4
5
6
Figure 13. 2 × 4-inch Electrical Wall Box Installation.
1 Electrical
wall
box
3
Wall box adapter *
4
Adapter mask *
* Included with ARG70
5 Controller
base
6 Controller
