17
|
Technical data
Installer reference guide
297
ERRA08~12E + ELVH/23E
Daikin Altherma 3 R MT F
4P708474-1 – 2023.05
17.3 Piping diagram: Indoor unit
A
Water side
p
Shut-off valve (recommended)
B
Refrigerant side
q
Non-return valve (recommended)
C
Field installed (delivered with the unit)
r
Pressure reducing valve (recommended)
D
Field supplied
*s
Pressure relief valve (max. 10 bar (=1.0 MPa))
(mandatory)
a1
Space heating/cooling – Water IN (screw
connection, 1")
*t
Tundish (mandatory)
a2
Space heating/cooling – Water OUT (screw
connection, 1")
u
Expansion vessel (recommended)
b1
DHW – Cold water IN (screw connection, 3/4")
b2
DHW – Hot water OUT (screw connection, 3/4")
B2L
Flow sensor
c
Recirculation connection
B1PW
Space heating water pressure sensor
d1
Gas refrigerant IN (heating mode; condenser)
M3S
3-way valve (space heating/domestic hot water)
d2
Liquid refrigerant OUT (heating mode; condenser)
e1
Liquid refrigerant IN (cooling mode; evaporator)
Thermistors:
e2
Gas refrigerant OUT (cooling mode; evaporator)
R1T
Outlet water heat exchanger
f
Plate heat exchanger
R2T
Outlet water backup heater
g
Shut-off valve for service
R3T
Refrigerant liquid side
h
Flexible pipe
R4T
Inlet water
i
Expansion vessel
R5T, R8T
Tank
j
Magnetic filter/dirt separator
k
Safety valve
Connections:
l
Automatic air purge
Screw connection
m
Drain valve
Flare connection
n
Pump
Quick coupling
o
Backup heater
Brazed connection