User Manual

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Siemens Building Technologies Room Temperature Controller CE1N3042en
HVAC Products 22.08.2003
Accessories
Description Type reference
Adapter plate 120 x 120 mm for 4“ x 4“ conduit boxes ARG70
Adapter plate 96 x 120 mm for 2“ x 4“ conduit boxes ARG70.1
Adapter plate for surface wiring 112x130 mm ARG70.2
Notes
In systems without automatic changeover, the temperature sensor can be replaced by
an external switch for manual changeover.
In systems with continuous heating operation, no sensor will be connected to the con-
troller’s input.
With continuous cooling operation, the controller input (B2–M) must be bridged.
Check the position of DIP switch no. 1 and change it, if required. If setpoint limitation is
required, use the minimum and maximum limitation facility (energy saver).
After applying power, the controller makes a reset, which takes about 3 seconds. Then,
it will be ready to operate.
Before the controller starts its control action, it performs a three-position synchroniza-
tion of the actuator. As a result, the actuator will be fully opened and then closed again.
This process takes 400 seconds. Then, the controller will be ready to operate.
• Prior to fitting the changeover sensor, thermal conductive paste must be applied to
the location on the pipe where the sensor is placed
• The cables used must satisfy the insulation requirements with regard to mains po-
tential
• Sensor input B2-M carriers mains potential. If the sensor's cables must be ex-
tended, the cables used must be suited for mains voltage.
The controller is supplied with Mounting Instructions.
Mounting location: on a wall of the room to be heated or cooled. Not in niches or book-
shelves, not behind curtains, above or near heat sources and not exposed to direct
solar radiation. Mounting height is about 1.5 m above the floor. The connecting wires
can be run to the controller from a recessed conduit box.
Only authorized personnel may open the controller.
When mounting the unit, fix the baseplate first. Then, make the electrical connections
and fit and secure the cover.
The controller must be mounted on a flat wall and in compliance with local regulations.
If there are thermostatic radiator valves in the reference room, they must be set to their
fully open position.
The cables used must satisfy the insulation requirements with regard to
mains potential.
The room controller is maintenance-free.
Caution: AC 230 V
Mounting, installation
and commissioning
Maintenance