AFRISO PrimoBox ACB 910 Operation And Installation Manual - Page 18

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Instruction manual

7 Assembly of the ARM ProClick actuator

The PrimoBox ACB condensing boiler mixing unit is equipped

with ARM ProClick electric actuators. It is possible to easily disassem-

ble and reassemble the actuator.

The ARM ProClick actuators

are removed

from

by pressing the button on the side

of the actuator housing and pull-

ing the actuator towards you.

Fig. 12: Actuator latch release

button on the valve

In order to mount the ARM ProClick actuator on the mixing valve

of the ACB mixing unit, the mixing valve should be set to "50% open",

i.e. the indicator of its cover (Fig. 13) is exactly halfway between

the connection

of the four-way valve.

Fig. 13: Valve closing component indicator

Then slide the actuator onto the mixing valve

until the actuator ProClick mechanism locks

on it. When mounting the ProClick actuator

on a rotary valve, pay attention to the current position of the valve

indicator. The valve stem should be positioned as in Figure 13,

and the actuator position indicator should show half the scale (vertical

position).

If the valve is in a different position, it must be set manually (using a

flat screwdriver, for example) as shown in Figure 13. If the indicator

on the actuator does not indicate the center of the scale (it is not ver-

tical), it should be switched to manual mode, set the actuator

with an allen key so that the indicator is vertical and indicates the cen-

ter of the scale. After putting the actuator on the valve, switch back

to automatic mode.

PrimoBox ACB 910 mixing unit for condensing boilers

the

valve

"C"

and

connection

"B"