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17.3 Piping diagram: Indoor unit
A Water side
B Refrigerant side
C Field installed (delivered with the unit)
D Field supplied
a1 Additional zone – Space heating/cooling – Water IN
(screw connection, 1")
a2 Additional zone – Space heating/cooling – Water
OUT (screw connection, 1")
b1 Main zone – Space heating/cooling – Water IN
(screw connection, 1")
b2 Main zone – Space heating/cooling – Water OUT
(screw connection, 1")
c1 DHW – Cold water IN (screw connection, 3/4")
c2 DHW – Hot water OUT (screw connection, 3/4")
d Recirculation connection
e1 Gas refrigerant IN (heating mode; condenser)
e2 Liquid refrigerant OUT (heating mode; condenser)
f1 Liquid refrigerant IN (cooling mode; evaporator)
f2 Gas refrigerant OUT (cooling mode; evaporator)
g Plate heat exchanger
h Shut-off valve for service
i Flexible pipe
j Expansion vessel
k Magnetic filter/dirt separator
l Safety valve
m Automatic air purge
ERRA08~12E + ELVZ12S18+23E
Daikin Altherma 3 R MT F
4P708478-1 – 2023.05
s Capillary tube
t Pump (main/mixed zone)
u Shut-off valve (recommended)
v Non-return valve (recommended)
w Pressure reducing valve (recommended)
*x Pressure relief valve (max. 10 bar (=1.0 MPa))
(mandatory)
*y Tundish (mandatory)
z Expansion vessel (recommended)
B2L Flow sensor
B1PW Space heating water pressure sensor
M1S 3-way valve (mixing valve for the main/mixed zone)
M3S 3-way valve (space heating/domestic hot water)
Thermistors:
R1T Outlet water heat exchanger
R2T Outlet water backup heater
R3T Refrigerant liquid side
R4T Inlet water
R5T, R8T Tank
R7T Main/mixed zone – water OUT
Connections:
17
Technical data
|
Installer reference guide
281
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