14 Technical data
Installer reference guide
77
ERLQ004~008CA + EHVZ04+08S18CB
Daikin Altherma – Low temperature split
4P401676-1 – 2015.02
14.5.2 Piping diagram: Indoor unit
Field installed
M
M
3D096028-1A
R1T
R4T
R3T
R2T
R5T
R7T
A
A
1
7
7
26
12
14
18
9
21
2
5
6
4
3
13
27
16
19
20
17
10
28
22
23
8
8
29
15
11
24
28
Refrigerant inlet
Refrigerant outlet
Refrigerant side
Water side
Field installed
1 Space heating – water OUT (additional/direct zone)
2 Space heating – water IN (additional/direct zone)
3 Space heating – water OUT (main/mixed zone)
4 Space heating – water IN (main/mixed zone)
5 Domestic hot water: hot water out
6 Domestic hot water: cold water in
7 Shut-off valve with drain/fill valve
8 Shut-off valve
9 Flow sensor
10 3-way valve (space heating/domestic hot water)
11 3-way valve (mixing valve for the main/mixed zone)
12 Water filter (additional/direct zone)
13 Water filter (main/mixed zone)
14 Pump (additional/direct zone)
15 Pump (main/mixed zone)
16 Backup heater
17 Safety valve
18 Plate heat exchanger
19 R1T – Outlet water heat exchanger thermistor
20 R2T – Outlet water backup heater thermistor
21 R3T – Thermistor (heat exchanger, liquid pipe)
22 R4T – Inlet water thermistor
23 R5T – Tank thermistor
24 R7T – Water outlet thermistor (main/mixed zone)
26 Expansion vessel
27 Air purge
28 Check valve
29 Capillary tube
Screw connection
Flare connection
Quick coupling
Brazed connection
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