User Manual

Siemens Building Technologies CA1N1222E / 11.1998
Landis & Staefa Division 1/4
1
222
Immersion thermostats
TTM2...
TTW2...
for control and monitoring of water temperatures
Immersion thermostats for control and monitoring of hot water temperatures
•
Switch-over contact AC 250 V / 10(2) A
•
Measuring range 35 ... 95 °C / 50 ...130 °C
•
Single or double thermostats
•
Pocket length 113 mm or 400 mm
The TTM2... and TTW2... immersion thermostats are typically used for monitoring hot
water systems. If the temperature at the sensor falls or rises to the preselected setpoint,
the thermostat switches over.
5 types are available. They differ in their measuring range, the length of the pocket and
in the number of switching systems.
Type Pocket length Measuring range Weight
Immersion thermostats
TTM2
113 mm 35 ... 95 °C 0.4 kg
TTW2
113 mm 50 ...130 °C 0.4 kg
TTW2L
400 mm 50 ...130 °C 0.54 kg
Double immersion thermostats
TTM22
113 mm 50 ...130 °C 0.63 kg
TTM22L
400 mm 50 ...130 °C 0.76 kg
The immersion thermostats and, if required, stainless steel pockets (instead of the
standard brass pockets) must be ordered separately.
When placing an order, please specify the quantity, product description and type code.
Example:
3 immersion thermostats TTM2
and
1 pocket Z617
The measuring sensor in the immersion thermostats TTM2... and TTW2... operates
according to liquid expansion principles. When the water temperature falls or rises to
the pre-selected setpoint, the thermostat switches over.
The TTM22 and TTM22L double immersion thermostats incorporate two independent
sensor and switching systems.
Use
Type summary
Ordering
Technical design
TTM22
TTW2