User Manual

CA2N1653E / 11.1998 Siemens Building Technologies

2/4 Landis & Staefa Division

Construction

PB3/C1 base unit comprising:

1 Base unit with 7 connection terminals

2 Snap-on switch assembly with connection terminals.

Not shown: Transparent, recyclable cover (PET) to protect the base unit

from accidental physical contact and from dirt and dust while building

works are in progress.

PBAS/C1 electronic assembly, comprising:

3 Printed circuit board with rotary knob for setpoint adjustment

4 Unit cover

Mounting

Mounting instructions (Ref. 35642) are enclosed with the operating unit.

The room operating unit may be flush-mounted in a wall box or screwed

directly onto a wall.

When using the built-in temperature sensor, the following must be noted:

• Mount in the occupied area, approximately 1.5 m above floor level and

at least 0.5 m from any adjacent wall.

• Do not expose to direct sunlight.

• Do not mount on external walls, in recesses, behind curtains or in the

vicinity of chimneys, doors and lamps.

See sheet 1659 for dimensions and further mounting instructions.

PBAS/C1 terminal layout

Room temperature sensor

Room temperature sensor (SGND)

Setpoint adjuster (SGND)

Setpoint adjuster

Service bus (SGND)

Service bus (PB-Service)

Service socket (FCC telephone socket)

for use with PRONTO IRC only

60156

∆w

60176

III

PBAS/C1

Switch contact AC 230 V / 6 (2) A

for use as required