Step 4. Electrical Connections:
The actuator is fitted with 1100mm of 4-core cable for connection of the system
equipment. The installation will be simplified by the use of an electrical junction
box into which all the system equipment can connect.
The actual wiring connections will depend on the system equipment used,
following the wiring principle outlined below. The MPE 222 is double insulated
and requires no earth connection.
ation
f at least 3mm.
lly open any equipment connected
ng return to the closed
and auxiliary equipment should cease to operate.
tes:
a.
with thermal insulation, or in
b.
that the valve is kept within the specified ambient
The valve actuator is not designed for continuously powered operation.
IMPORTANT:
The wiring must
comply with
current I.E.E.
regulations. Ensure
mains supply to all
controls is fused at
no more than 3A.
Mains isolating
switch must have
contact separ
AUX. SWITCH
3A. 230V
ORANGE
GREY
BROWN
BLUE
STAT.
N
L
OFF
ON
System Controls To Be FUSED 3A MAX
COM
N/C
N/O
MOTOR
MICRO-
SWITCH
B
A
22MM
o
Step 5. Commissioning:
When the installation is complete, filled and vented, check that the valve operates
correctly. Switch on the system controls, i.e. programmer and thermostats: The
valve should move to the open position. When fu
to the valve’s auxiliary switch should operate.
Switch off the heating controls: The valve should spri
position
No
Ensure that the actuator is not covered
contact with pipe work or other materials.
When the valve is fitted in confined space, ample ventilation must be
provided to ensure
temperature range.
c.
