16
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Technical data
Installer reference guide
273
EPRA14~W1 + ETSH/X(B)16P30+50EF
Daikin Altherma 3 H HT ECH₂O
4P679467-1 – 2022.02
16.2 Piping diagram: Outdoor unit
3D124079C
R10T
R9T
R
6T
R7T
R8T
R
3T
R5T
R4
T
R
1T
R2T
S1PH
sv
sv
M1C
S1NPH
E1HHEX
sv
S1PL
S2
PH
Y1E
Y3E
Y2S
M1F
Y4S
Y3S
Liquid
Gas
Y1S
b
d
e
n
n
c
d
i
j
k
l
g
i
i
i
f
f
f
f
m
h
a
e
e
l
1N~
*
*
3N~
Gas
Gas
Thermistors:
Liquid
Liquid
R1T
Outdoor air
a
Water IN (screw connection, male, 1")
R2T
Compressor discharge
b
Water OUT (screw connection, male, 1")
R3T
Compressor suction
c
Plate heat exchanger
R4T
Air heat exchanger, distributor
d
Pinched pipe
R5T
Air heat exchanger, middle
e
Refrigerant filter
R6T
Refrigerant liquid
f
One-way valve
R7T
Compressor shell
g
Economiser heat exchanger
R8T
Compressor port
h
Service port 5/16" flare
R9T
Entering water
i
Capillary tube
R10T
Leaving water
j
Distributor
k
Air heat exchanger
Refrigerant flow:
l
PCB cooling
Heating
m
Accumulator
Cooling
n
Muffler
E1HHEX
Plate heat exchanger heater
M1C
Compressor
M1F
Fan motor
S1PH
High pressure switch (5.6 MPa)
S2PH
High pressure switch (4.17 MPa)
S1PL
Low pressure switch
S1NPH
High pressure sensor
Y1E
Electronic expansion valve (main)
Y3E
Electronic expansion valve (injection)
Y1S
Solenoid valve (4-way valve)
Y2S
Solenoid valve (low pressure bypass)
Y3S
Solenoid valve (hot gas bypass)
Y4S
Solenoid valve (liquid injection)