DencoHappel ZGF.1E series Operation Manual page 106

Safety and User Instructions
7.2.1 Checking the control valves
Position indicator of drive screw
Tab. 7-1: Position indicator with 2 and 3-way valves
106
2 or 3-way valves with modulating actuators or 2 and 3-way valves with
thermoelectric actuators.
Actuators of 2 and 3-way valves have a position indicator in the form of a red plas-
tic nose that is placed in the relevant slots.
Depending on the model as a 2 or 3-way valve the latter is open or closed if the
red plastic noses are in one of two possible end positions (refer to Tab. 7-1).
Red plastic noses
Setting 1
Red plastic noses
Setting 2
NOTICE!
Thermoelectric actuators for 2-way valves are marked with a black label and 3-
way valves - with a red label.
2-way-valve
A
Valve OPEN
A
Valve CLOSED
PR-2011-0115-GB • Subject to modifications • R4-12/2015
Flex-Geko Fan Coil Unit
3-way-valve
A
B
B
Valve CLOSED
A
B
B
Valve OPEN
AB
AB