10 Technical data
Installation manual
43
EWSAH/X06UDA9W
Daikin Altherma 3 WS
4P675760-1 – 2021.10
10.1
Piping diagram: Indoor unit
3D137196
Y1E
R2T
(A7P)
R5T
(A7P)
R1T
(A1P)
R4T
(A1P)
R5T
(A1P)
R8T
(A1P)
R2T
(A1P)
R3T
(A7P)
R4T
(A7P)
R6T
(A7P)
R3T
(A1P)
A
B
D
C
M1C
M1P
B1L
Y1S
S1NPL
B1PR S1PH
B1PW
M3S
a2
a1
b1
c1
c2
b2
A
d
d
D
B
C
e
D
D
d
d
g
f
g
g
E
g
i
i
j
k
l
m
n
o
p
q
q
o
r
h
h
s
A
Central water loop side
B1L
Flow sensor
B
Refrigerant side
B1PR
Refrigerant high pressure sensor
C
Water side
B1PW
Space heating water pressure sensor
D
Field installed
M1C
Compressor
E
DHW tank
M1P
Water pump
a1
Space heating water IN (Ø22 mm)
M3S
3-way valve (space heating/domestic hot water)
a2
Space heating water OUT (Ø22 mm)
M4P
Flow control valve ()
b1
Domestic hot water: cold water IN (Ø22 mm)
S1NPL
Low pressure sensor
b2
Domestic hot water: hot water OUT (Ø22 mm)
S1PH
High pressure switch
c1
Central water loop IN (Ø28 mm)
Y1E
Electronic expansion valve
c2
Central water loop OUT (Ø28 mm)
Y1S
Solenoid valve (4-way valve)
d
Shut-off valve
e
Automatic air purge valve
Thermistors:
f
Safety valve
R2T (A7P)
Compressor discharge
g
Shut-off valve
R3T (A7P)
Compressor suction
h
Plate heat exchanger
R4T (A7P)
2 phase
i
Drain valve
R5T (A7P)
Central water loop IN
j
Backup heater
R6T (A7P)
Central water loop OUT
k
Recirculation connection (3/4" G female)
R1T (A1P)
Heat exchanger – water OUT
l
Check valve
R2T (A1P)
Backup heater – water OUT
m
Muffler
R3T (A1P)
Liquid refrigerant
n
Refrigerant pressure relief valve
R4T (A1P)
Heat exchanger – water IN
o
Service port (5/16" flare)
R5T (A1P)
Tank
p
Heat sink
R8T (A1P)
Tank
q
Filter
r
Rectifier
Connections:
s
Pressure independent control valve (PICV) + actuator
Screw connection
Quick coupling
Refrigerant flow:
Brazed connection
Heating
Cooling