Honeywell evohome Thermal actuator, passive (NO) MT4-230-NO Data Sheet
Product codes
MT4-230-NO
MT SMALL LINEAR THERMOELECTRIC ACTUATORS – PRODUCT DATA
Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Rolle, Z.A. La Pièce 16, Switzerland by its Authorized Representative:
Automation and Control Solutions
Honeywell GmbH
Böblinger Strasse 17
71101 Schönaich, Germany
Phone +49 (0) 7031 637 01
Fax
+49 (0) 7031 637 740
http://ecc.emea.honeywell.com
EN0B-0490GE51 R0414
EN0B-0490GE51 R0414
Subject to change without notice
Valve Action
Valve Action with “Typical” Valves
NO (normally-open) version
A
B
A
B
AB
A
B
AB
A
B
A
B
AB
A
B
AB
NC (normally-closed) version
NC
NO
NC
NO
Fig. 6. Valve action
Normally open: 2-way valve, A-B open without power;
Normally closed: 2-way valve, A-B shut without power;
NOTE: Fig. 6 is a schematic diagram showing typical valve
action. Actual function can vary depending upon the
individual type of valve.
Valve Action with VSxx Valves
NO version
A
B
AB
A
B
AB
A
B
AB
A
B
AB
NC version
NC
NO
NC
NO
AB
A
AB
A
Fig. 7. Valve action with VSxx valves
DIMENSIONS
X
H
L
W
dimension MT4-xxx MT8-xxx
W
H
L
X
59
42
45
6
67
Fig. 8. Dimensions (in mm)