Daikin Altherma 3 H HT ECH2O Series - Function of 3-Way Switch Valves

2 Product description
Installation manual
10
Daikin Altherma ETS(X/H)(B)-D
Heat pump (indoor unit) with integrated heat accumulator
008.1448499_00 – 06/2019 – EN
Item Designation Item Designation
8 Automatic vent valve 33 Status display
9 Storage tank (polypropyl-
ene, double-walled jacket
with PUR hard foam heat
insulation)
34 Ball valve (heating cir-
cuit)
10 Filling and draining con-
nection or solar return
flow connection
35 Combined filling and
draining valve (heating
circuit)
11 Mount for solar controller
or handle
37
t
DHW1
Storage tank temperature
sensor
12 Heat exchanger (stain-
less steel) for domestic
hot water heating
38 Diaphragm expansion
vessel connection
13 Heat exchanger (stain-
less steel) for storage
tank charging or heating
support
39 Controller housing
14 Biv heat exchanger
(stainless steel) for char-
ging with external heat
generator (e.g. pressur-
ised solar system)
41 EKSRPS4 Optional:
Solar control and pump
unit
15 Connection for optional
electrical backup heater
EKBUxx
3UVB
1
3-way switch valve (in-
ternal heat generator cir-
cuit)
16 Solar inflow layering pipe 3UV
DHW
3-way switch valve (hot
water/heating)
17 Fill level indicator (tank
water)
DS Pressure sensor
18 Optional: electric backup
heater (EKBUxx)
FLS FlowSensor
19 Sensor pocket for tank
temperature sensor t
DHW1
t
V
Inflow temperature
sensor
20 Pressure-free storage
water
t
V,BH
Backup heater inflow
temperature sensor
21 Solar zone RoCon
+ B1
Controller control panel
22 Hot water zone MAG Diaphragm expansion
vessel
23 Safety overflow connec-
tion
FS Flow switch
24 Mount for handle
Tab.2-1 Legend for Fig. 2-1 to Fig. 2-4
2.2 Function of the 3-way switch
valves
Fig.2-5 Function of 3-way switch valve