Daikin EK2VK0 [5/14] Lockshield adjustment

U.M. FWX(V/M)10AATV3 FWX(V/M)15AATV3 FWX(V/M)20AATV3

bar 0,3 0,4 0,5

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The by-pass is an overpressure valve that keeps the

system balanced when the 2-way supply valve in the

cooler-convector/cooler radiator is closed. Inside, there is

a plug which, under normal conditions, remains closed.

If, due to the closure of the 2-way valve, it is subjected to

a stress that is more than that of the calibration value, it

opens so that the water can circulate through the by-pass

circuit.

The valve can be set from 0.3 bar to 0.5 bar, depending

on the model:

By pass

set the calibration to

The lockshields supplied with the hydraulic kits provide

an adjustment that balances the system load losses. To

ensure a correct adjustment and balancing of the circuit,

follow the procedure indicated below:

- With a screwdriver, loosen and remove the slotted

grub screw inside the hexagonal head.

- Close the adjustment screw using a 5 mm Allen key

(A)

- Re-tighten the slotted grub screw then mark the

reference point for the adjustment with an “x” (B).

- Align the screwdriver with the “x”, then open with a

number of turns (C) according to diagram Δp-Q

shown in the next page.

The number of turns refers to the micrometric screw

Then fully open the screw (D). Now the pre-adjustment

has been set and will not change if there are repeated

openings or closings with the Allen key.

Lockshield adjustment