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ENGLISH
Wiring work (Continued)
Connection of the thermostat
Description
No. of wires
Max. A
Thickness
Supply Scope
Room Thermostat for
weather control
4
22mA
> 0.75mm
2
Field supply (230V~, Input)
Connection of the 2-way valve
Description
No. of wires
Max. A
Thickness
Supply Scope
Motorized 2-way valve to
shut off UFH loops during
cooling.
2+ground
22mA
> 0.75mm
2
Field supply (230V~, Output)
There are 2 types of 2-way valve, normal open type and normal closed type. Make sure to connect
terminals to right positions of terminal block. As detailed on the wiring diagram and illustrations above.
N
C
H
H
C
th
L
H
N
N L C1 H1
L C1 H1
C
th
Thermostat 1 Thermostat 2
In case of normal open type
when it opens (relay on)
N
N
L2
L1
N L C1 H1
Thermostat
-Weather controller
- Changeover
(Heating and Cooling)
-230V AC
-4 wires
2-way motorized valve
- When outlet water temperature reach to lower than
16°C in cooling mode, UFH loops will be closed.
-230V AC
- 2 wires(Normal Open or Normal Close)
N L1L2
In case of normal closed type
- When it closes
Normal
closed type
Normal
open type
- When it opens
In case of normal open type
- When it opens
- When it closes
* Connection of 2 wires 2-way valve
Mixing
Tank
Floor
Heating
2Way Valve
Mixing
Tank
Floor
Heating
2Way Valve
Mixing
Tank
Floor
Heating
2Way Valve
Mixing
Tank
Floor
Heating
2Way Valve
N L1
N L2
1. Before the installation, hydro unit should be
turned off.
2. Using the appropriate equipment to correct
position of terminal block as shown on the
diagram.
3. Make sure what type is you use.
– Normal OPEN or Normal CLOSED.
Process
1. Before the installation, hydro unit should be turned
off.
2. Using the appropriate equipment to correct
position of terminal block as shown on the diagram.
3. Make sure what type is you use.
- Contact signal must be “ L “.
◆
When you install two thermostats, thermostat2
is prior to thermostat1.
Process
NH080PHXEAHydro unit_IM_E 32659-1.indd 29
2010-07-28 ｿﾀﾈﾄ 8:59:40
