Daikin EWYQ230DAYN [363/524] Superheat control

ESIE06-05 Functional Control for a Standalone Unit

Part 2 – Functional Description 2–137

3.11 Superheat control

Introduction Electronic expansion values are used to control the superheat. Depending from the unit and model 1

or 3 expansion values are used per circuit.

■ EWAQ BO-150 DAYN(N-P-B): one condenser coil per circuit and one electronic expansion value

per circuit

EWYQ 130-150 DAYN(N-P-B): one condenser coil per circuit and two electronic expansion valve

per circuit.

One for cooling and one for heating mode.

■ EWAQ080-100-180-210-240-260 DAYN(N-P-B):

two condenser coils per circuit and one electronic expansion valve per circuit.

■ EWYQ080-100-180-210-240-250DAYN(N-P-B):

two condenser coils per circuit and three electronic expansion valves per circuit. One in cooling

mode and two in heating mode.

Example: piping principal for EWY080-100-180-210-240-250 DAYN(N-P-B) in cooling mode.

condenser condenser

1-21-1

Y11E

Evaporator side

EWYQ 080-100-180-210-240-250DAYN(N-P-B) Only EWYQ 180-210-240-250DAYN(N-P-B)

Suction temperature sensor

for Super heat Control is R14T

Suction temperature sensor

for Super heat Control is R34T

condenser condenser

2-22-1

Y12E