Daikin Altherma 3 HT - Piping Diagram: Outdoor Unit

16 | Technical data
Installer reference guide
260
EPRA14~18D + ETVH/X16S18+23E
Daikin Altherma 3 H HT F
4P644737-1A – 2022.03
16.2 Piping diagram: Outdoor unit
3D124079C
R10T
R9T
R6T
R7T
R8T
R3T
R5T
R4T
R1T
R2T
S1PH
sv
sv
M1C
S1NPH
E1HHEX
sv
S1PL
S2PH
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
ee
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)