Piping Diagram: Indoor Unit - Daikin Altherma 3 WS Installation Manual

10.1

Piping diagram: Indoor unit

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