Daikin EWYT021CZI-A1, Installation And Maintenance Manual

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D-EIMHP01505-22_00EN 49/59
EQUIPMENT
ID
DESCRIPTION
1 SCROLL COMPRESSOR
2 4 WAY VALVE
3 TUBES&FINS HEAT EXCHANGER (COIL)
4 BIFLUX FILTER
5 MECHANICAL FILTER
6 ELECTRONIC EXPANSION VALVE
7 LIQUID RECEIVER
8 HEAT EXCHANGER (BPHE)
9 CHECK VALVE
10 SUBCOOLER (BPHE)
11 ACCESS FITTING (¼
” SAE FLARE)
12 SHUT-OFF VALVE
13 RECEIVER VALVE ¼
” x ¼”
14 DRIER FILTER
15 COPPER PIPE CAP
k Crankcase heater
LINE
ID
DESCRIPTION
L1 DISCHARGE
L2 4 WAY VALVE
– COIL
L3 COIL
– EXV
L4 EXV
– LIQUID RECEIVER
L5 LIQUID RECEIVER OUT
L6 BPHE EXCHANGER
– 4 WAY VALVE
L7 SUCTION
L8 LIQUID
– SUBCOOLER
L9 SUBCOOLER
– COMPRESSOR
L10 CHECK VALVE LINE
L11 BPHE
– COMPRESSOR (INDOOR UNIT)
L12 SUBCOOLER
– BOHE (INDOOR UNIT)
INSTRUMENT
ID
DESCRIPTION
PT PRESSURE TRANSDUCER
PZH HIGH PRESSURE SWITCH 42,2 bar
PSAL LOW PRESSURE LIMITER (CONTROLLER FUNCTION)
TZAH HIGH TEMPERATURE SWITCH (MOTOR THERMISTOR)
TT TEMPERATURE TRANSDUCER *
OAT OUTSIDE TEMPERATURE TRANSDUCER
* the TEMPERATURE probes on the refrigerant side are thermal insulated.
REFRIGERANT PED GROUP LINE
PS
(bar)
Ts
(°C)
R32 1
HIGH PRESSURE GAS 42.9 +10/+120
HIGH PRESSURE LIQ 42.9 -10/+65
LOW PRESSURE 30 -30/+60