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4.7 Wiring for 2-zone temperature control
1. Water circulation pump 2 (Zone1 water circulation pump) / Water circulation pump 3 (Zone2 water circulation pump)
Electrically wire water circulation pumps 2 and 3 to the appropriate output terminals. (Refer to “Outputs” in 4.5.)
2. Flow switch 2 (Zone1 flow switch) / Flow switch 3 (Zone2 flow switch)
Connect flow switches 2 and 3 to the appropriate terminals. (Refer to “Signal inputs” in 4.5.)
Set dip switches 3-2 and 3-3 according to the functions of individual flow switches 2 and 3. (Refer to “Dip switch setting” in section 5.)
3. Thermistor
Connect the thermistor to monitor the Zone1 flow temp. to the THW6 (TBI. 2-3 and 2-4) terminals.
Connect the thermistor to monitor the Zone1 return temp. to the THW7 (TBI. 2-5 and 2-6) terminals.
Connect the thermistor to monitor the Zone2 flow temp. to the THW8 (TBI. 2-7 and 2-8) terminals.
Connect the thermistor to monitor the Zone2 return temp. to the THW9 (TBI. 2-9 and 2-10) terminals.
The maximum length of the thermistor wiring is 30 m. When the wires are wired to adjacent terminals, use ring terminals and insulate the wires.
The length of the optional thermistors are 5 m. If you need to splice and extend the wirings, following points must be carried out.
1) Connect the wirings by soldering.
2) Insulate each connecting point against dust and water.
4. Motorized mixing valve
Connect three wires coming from the motorized mixing valve to the appropriate terminals referring to “Outputs” in 4.5.
Note: Connect the signal line to open Port A (hot water inlet port) to TBO. 2-3 (Open), the signal line to open Port B (cold water inlet port) to TBO. 2-1 (Close),
and the neutral terminal wire to TBO. 2-2 (N).
1 2 3
N
L
FTC
(Master)
TBO.2
Close N Open
A
B
from mixing tank
to mixing tank
to Zone2 heat emitter
from Zone2 heat emitter
Motorized mixing valve
4. Electrical work
2. DIP switch
Turn DIP switch 3-6 ON.
3. 2-way valve 2a (for Zone1) / 2-way valve 2b (for Zone2)
Electrically wire 2-way valve 2a and 2b to the appropriate external output terminals. (Refer to "External outputs" in 4.5)
4.8 2-zone valve ON/OFF control
1. Pipe work
1. Zone1 2-way valve 2a (local supply)
2. Zone2 2-way valve 2b (local supply)
3. Water circulation pump 2 (local supply) *1
4. By-pass valve (local supply) *2
*1 Install according to system in the field.
*2 For safety protection, it is recommended to install a by-pass valve.
Note: Freeze stat function is deactivated whilst this control is ON. Use anti-freeze solution to
avoid freezing, if necessary.
4. Room thermostat connection
Opening /closing 2-way valve provides a simple 2-Zone control.
Flow temperature is common for Zone1 and 2.
Heating operation mode
Zone1
Zone2
Room temp. control
(Auto adaptation) *3
● Wireless remote controller (option)
● Room temperature thermistor (option)
● Main remote controller (remote position)
● Wireless remote controller (option)
Compensation curve or flow temp. control
● Wireless remote controller (option) *4
● Room temperature thermostat (local supply)
● Wireless remote controller (option) *4
● Room temperature thermostat (local supply)
*3 Ensure to install the room thermostat for Zone1 in main room since the Room temp. control for Zone1 is prioritized.
*4 The wireless remote controller can be used as a thermostat.
1
3
4
2
Zone1
Zone2
In DHW or heating operation, the commands in the table below can be used.
IN11
IN12
Meaning
OFF (open)
OFF (open)
Normal operation
ON (short)
OFF (open)
Switch-on recommendation*1
OFF (open)
ON (short)
Switch-off command
ON (short)
ON (short)
Switch-on command*2
Note:
• To activate this function, settings on the main remote controller are required.
(Main menu → Service → “Function settings”
Ref. add: 0, Unit: 1)
• Heating operation mode (compensation curve or flow temp. control) requires
the optional wireless remote controller.
*1 Switch-on recommendation has following 2 modes:
Mode 7 Hot water operation
Additional boost temperature is added onto the usual DHW target temperature.
(1-Inactive (default) /2-Target temp. +3°C/3-Target temp. +5°C)
Mode 8 Heating operation
Heating ON (permitted heating with thermo ON) range is extended.
(1-Inactive (default ) /2-Thermo ON temp. +2°C/3-Thermo ON temp. +3°C)
*2 Switch-on command has following 2 modes:
Hot water operation
With electrical heater or DIP SW 1-2 ON → Target temp. : 60°C
Without electrical heater and DIP SW 1-2 OFF → Target temp. : 55°C
Heating operation
Heating is ALWAYS permitted.
4.9 Smart grid ready
7 8 9 10
TBI.3
IN11
IN12
Содержание PAC-SIF051B-E
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