1592026260 IEV22-24D GB r.1.0 21.02.2019 IEV 26/60
time has elapsed, the adjustment will go ahead as it normally does for
defrost.
o The adjustment request is no longer valid and the digital defrost input and the
digital adjustment request input are activated at the same time to perform the
defrost.
▪ When the digital defrost and adjustment request inputs are activated,
the valve opens at the value under parameter Et52 / Et54 and
maintains this position for the Et53 / Et55 time; once the Et53 / Et55
pre-aperture time elapses, the valve performs adjustments in
accordance with the chiller mode, though the proportional component
is provided by the specific Et51 defrost parameter
• Defrost output
o The digital defrost input is disabled when the adjustment request is active.
▪ When the digital defrost request input is disabled, the valve maintains
the step number it currently has for the time set under the Et43
parameter.
▪ Once the Et43 time has elapsed, the valve performs adjustments in
accordance with the mode established by the configuration or by the
status provided by the digital input (chiller or heat pump)
o The digital defrost input is disabled when the digital adjustment request input is
disabled
▪ When the digital defrost and adjustment request inputs are disabled,
the valve closes
▪ When the digital adjustment request input is activated (it is assumed
that the operating mode is heat pump), the valve opens at the step
number set under parameter Et1 / Et4 and maintains this position for
the time set under Et43
Once the Et43 time has elapsed, the valve performs adjustments in accordance with the heating mode
(heat pump)
7.2 Configuration valve ↔ circuit
Configuration with a single valve associated with a circuit
Available configurations:
- valve 1 associated with circuit 1 and valve 2 associated with circuit 2
- valve 1 associated with circuit 2 and valve 2 associated with circuit 1
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