– 31 –
Hydro Unit
Installation Manual
31
Backup heater
energization
control during
defrosting
β
:
0 = 0K, …, 4 = 40K
Recommendation:
β
=2 (20K)
B9
–
0~4
0
32 Floor drying
Setting Start and End
temperature (°C)
–
14
20~55
0
Setting Max temperature (°C)
–
15
20~55
0
Continuation days for every
step up to Max temperature
(days)
–
16
1~7
0
Temperature difference for
every step up to Max
temperature (K)
–
17
1~10
0
Continuation days for every
step down to End temperature
(days)
–
18
1~7
0
Temperature difference for
every step down to End
temperature (K)
–
19
1~10
0
Continuation days in Max
temperature (days)
–
1A
1~50
0
33 Group control
1 = TTW value transmitted
from the Master Unit
0 = TTW value of each Hydro
Unit
AB
–
0~1
0
34 SG Ready
Set point temperature
increase during System
Forced ON period (K)
AC
–
0~10
0
35
0-10 V interface
(option)
Refer to page 18
680
–
0~4
0
681
–
0~3
0
682
–
0~3
0
683
–
0~3
0
684
–
0~3
0
685
–
40~80
65
686
–
20~55 (65)
55
687
–
20~55 (65)
55
688
–
7~25
20
689
–
1~5
5
68A
–
1~5
3
68B
–
1~5
3
68C
–
1~5
1
36 Hydro Unit
Outputs
Refer to page 15
6CA
–
0~9
0
6CB
–
0~9
1
6CC
–
0~9
2
6CD
–
0~9
3
Location & DN
Number
DN Description
Hydro
RC
Range
HWT-60
(HWT-110)
Default
HWT-60
(HWT-110)
After
Commissioning
Change
1
Change
2
■
Settings by purpose
Settings when hot water supply function is
not used
• When the hot water supply function is not used, set
DN “6B8” of Hydro Unit to “1”. (Refer to page 20)
Setting for cooling
• For Hydro Units that do not perform cooling (those
for floor heating, etc.), procure a motorized 2-way
valve (for cooling) (refer to “Control parts
specifications” on page 13 for the details.) locally and
attach it to the water pipe that is not used for cooling.
Connect the valve cables to terminals CN23 (3) and
(4) of the Hydro Unit.
Settings for hot water supply
• Prepare the optional hot water cylinder.
• Procure a motorized 3-way valve (refer to “Control
parts specifications” on page 13 for the details.)
locally and perform piping. Connect the valve cables
to terminals CN23 (8), (9) and (10) of the Hydro Unit.
• Set DN “6B8” of Hydro Unit to “0”. (Refer to page 20)
• Connect the power supply unit for the hot water
cylinder heater to terminals TB03 L and N of the
Hydro Unit.
• Connect cables between the Hydro Unit and the hot
water cylinder as follows: Hydro Unit terminals
TB02 (1), (2), and earth — Hot water cylinder (1), (2),
and earth
CN20 (1), (2), and earth — Hot water cylinder A, B,
and earth
Setting for second remote controller
• Prepare the optional second remote controller.
• Connect the cable to terminals TB04 A,B of the
Hydro Unit and remote controller.
Settings for 2-zone temperature control
• Procure a motorized mixing valve (refer to “Control
parts specifications” on page 13 for the details.)
locally and perform piping. Connect the valve cables
to terminals CN22 (7), (8), (9) and (10) of the Hydro
Unit.
• Procure a buffer tank locally.
• Procure a water pump locally, and connect its cables
to terminals CN23 (1) and (2) of the Hydro Unit.
To inhibit interlocking the water pump with the
internal pump of the Hydro Unit, set DN “6B5” of
Hydro Unit to “0”.
• Set DN “6BA” of Hydro Unit to “1”. (Refer to page 20)
Attach the temperature sensor (TFI) connected to
terminals CN20 (3) and (4) of the Hydro Unit near the
hot water inlet of the Hydro Unit.
• Fix TFI sensor on the room heating supply pipe by
using the connector procured in locally.
• Cover the cables with insulation tube (minimum
1 mm) or conduit so that the user cannot touch them
directly.
61-EN
62-EN
Summary of Contents for HWT-1101F21MM3W-E
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