Daikin EWYQ180DAYN [364/524] Suction temperature sensor for super heat control is r18t suction temperature sensor for super heat control is r28t

Daikin EWYQ230DAYN [364/524] Suction temperature sensor for super heat control is r18t suction temperature sensor for super heat control is r28t
Functional Control for a Standalone Unit ESIE06-05
2–138 Part 2 – Functional Description
3
1
2
4
5
Example : piping principle for EWYQ080-100-180-210-240-250 DAYN(N-P-B) in heating mode.
(WYQ080-100-180-210-240-250 DAYN(N-P-B); only EWYQ180-210-240-250 DAYN(N-P-B).
Remark: only during heating mode, two expansive valves are used per circuit. For the prevention of
air heat exchanger drift during heating mode, each air heat exchanger does individual suction SH
control.
Variable control
condition
The electronic expansion valve control is done by a variable control. The suction superheat value will
be changed according to the discharge superheat. This between the upper and lower limit specified in
the controller. Same superheat control in cooling and heating mode, however other limit values are
used.
condenser side
Evaporator
1-1
Evaporator
1-2
Evaporator
2-1
Evaporator
2-2
Y13E
Y12E
Y22E
Y23E
Suction temperature
sensor for Super heat
Control is R18T
Suction temperature
sensor for Super heat
Control is R28T
Suction temperature
sensor for Super heat
Control is R38T
Suction temperature
sensor for Super heat
Control is R48T
EWYQ 080-100-180-210-240-250 DAYN(N-P-B) Only EWYQ 180-210-240-250 DAYN(N-P-B)

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