Siemens REV23 User Manual

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Siemens Building Technologies Room Temperature Controller REV23 CE1N2264en
HVAC Products 23.04.2002
PID 12 mode Switching cycle of 12 minutes for normal or slow controlled systems
(massive building structures, large spaces, cast-iron radiators, oil
burners).
PID 6 mode Switching cycle of 6 minutes for fast controlled systems (light building
structures, small spaces, plate radiators or convectors, gas burners).
2-Pt mode Pure 2-position control with a switching differential of 0.5 °C (±0.25 °C)
for very difficult controlled systems with considerable outdoor tem-
perature variations.
Protects the pump against seizing during longer off periods. Periodic pump run is acti-
vated for one minute every 24 hours at midnight. This function can be selected on the
heating engineer menu.
Periodic pump run active:
/ periodic pump run inactive:
The controller is suited for cooling applications.
The function can be selected on the heating engineer menu.
The controller comes set for heating operation (refer to factory settings).
User-defined data:
Press the button behind the pin opening for at least one second: this resets the user-
specific settings to their default values (the heating engineer settings will not be
changed). The clock starts at 12:00. During the reset time, all sections of the display
light up, enabling them to be checked.
All user-defined data plus the heating engineer settings:
Press the button behind the pin opening together with the warmer and colder buttons
for at least one second.
After this reset, all factory settings will be reloaded (also refer to section “Factory set-
tings“).
Mechanical design
About 3 months before the batteries are exhausted, the battery symbol appears
on the display, but all functions will be fully maintained. When changing the batteries,
the current data will be retained for a maximum of one minute.
The REV23 has a plastic housing with a large display and easily accessible operating
elements. The controller is removed from its base by sliding it upward. It is thus possi-
ble to replace the two 1.5 V alkaline batteries type AA in the compartment at the rear of
the controller.
The base can be fitted to most types of commercially available recessed conduit boxes
or directly on the wall for wiring. The base only houses the terminals for the electrical
connection between the controller and connected devices. The entire electronics (in-
cluding the relay with a potentialfree changeover contact) are accommodated in the
controller.
Periodic pump run
/
Operating mode
heating / cooling
/
Reset functions
Battery change
Controller
Base

Siemens REV23 Specifications

General

Brand	Siemens
Model	REV23
Category	Temperature Controller
Language	English