Connecting Inputs/Outputs; Signal Inputs; Thermistor Inputs - Mitsubishi Electric ecodan ERST20 series Installationshandbuch

5
System Set Up

5.2 Connecting inputs/outputs

1 TBO.1
2
3 1 CNP1
(WHT)
4 3
5
6
1
1 CNP4
TBO.2
1
(RED)
3
2
3 SW5
4
5 8
LED1
6 1
1
CNV1
1 TBO.3
SW4
(WHT)
5
2
6
3
1
4
5
SW3
6
LED2
7
8
8
1
1 TBO.4
LED3
2
SW2
3
4
8
5
1
1
6 CNIH
(ORN)
3
SW1
1 1
CNBC CNBHT
8
(GRY) (BLK)
3 3
FTC
1
LED4
CNBH
(WHT)
7
CN1A CNW5
(WHT) (WHT)
1
1
2
4
2 4 6 8 10 12 14 2 4 6 8 10 12 14
1
1 3 5 7 9 11 13 1 3 5 7 9 11 13
TBI.1 TBI.3
<Figure 5.2.1>

Signal inputs

name terminal block Connector item
IN1 TBI.1 13-14 —
IN2 TBI.1 11-12 —
IN3 TBI.1 9-10 —
IN4 TBI.1 7-8 —
IN5 TBI.1 5-6 —
IN6 TBI.1 3-4 —
IN7 TBI.1 1-2 —
IN8 TBI.3 1-2 —
IN9 TBI.3 3-4 —
IN10 TBI.3 5-6 —
IN1A TBI.3 12-14 CN1A
*1. If using outdoor thermostat for controlling operation of heaters, the lifetime of the heaters and related parts may be reduced.
*2. To turn on the boiler operation, use the main remote controller to select "Boiler" in "External input setting" screen in the service menu.
*3. Connectable electric energy meter and heat meter
● Pulse type Voltage free contact for 12VDC detection by FTC (TBI.3 1, 3 and 5 pins have a positive voltage.)
● Pulse duration Minimum ON time: 40ms
Minimum OFF time: 100ms
● Possible unit of pulse 0.1 pulse/kWh
100 pulse/kWh
Those values can be set by the main remote controller. (Refer to the menu tree in "5.8 Main remote controller".)
Wiring specification and local supply parts
item name Model and specifications
Signal input Signal input Use sheathed vinyl coated cord or cable.
function wire Max. 30 m
Wire type: CV, CVS or equivalent
Wire size: Stranded wire 0.13 mm² to 1.25 mm²
Switch Non-voltage "a" contact signals
Remote switch: minimum applicable load 12V DC, 1mA

thermistor inputs

name terminal block Connector
TH1 — CN20
TH2 — CN21
THW1 — CNW12 1-2 Thermistor (Flow water temp.)
THW2 — CNW12 3-4 Thermistor (Return water temp.)
THW5 — CNW5
THW6 TBI.2 3-4 —
THW7 TBI.2 5-6 —
THW8 TBI.2 7-8 —
THW9 TBI.2 9-10 —
THWB1 TBI.2 11-12 —
THWB2 TBI.2 13-14 —
ensure to wire thermistor wirings away from the power line and/or OUt1 to 15 wirings.
*1. 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.
23
1
CN01 2
(WHT)
4
6
When the wires are wired to adjacent terminals
F2 F1
6.3A 250V 10A 250V
use ring terminals and insulate the wires.
1
CN3C
(BLU)
3
1
CNPWM
(WHT)
3
CNRF
(WHT)
CN105
(RED)
CNIT
(BLU)
CN22 1
(BLU)
2
CN108
CNW12 CN21 CN20
(RED) (YLW) (RED)
1
1
1
2
3
4
2 4 6 8 10 12
3 5 7 9 11 13
TBI.2
Room thermostat 1 input
Flow switch 1 input
Flow switch 2 input (Zone1)
Demand control input
Outdoor thermostat input *1
Room thermostat 2 input
Flow switch 3 input (Zone2)
Electric energy meter 1
Electric energy meter 2
Heat meter
Flow sensor
1 pulse/kWh
1000 pulse/kWh
Solid wire: ø0.4 mm to ø1.2 mm
item
Thermistor (Room temp.) (Option)
Thermistor (Ref. liquid temp.)
Thermistor (DHW tank water temp.)
Thermistor (Zone1 flow water temp.) (Option) *1
Thermistor (Zone1 return water temp.) (Option) *1
Thermistor (Zone2 flow water temp.) (Option) *1
Thermistor (Zone2 return water temp.) (Option) *1
Thermistor (Boiler flow water temp.) (Option) *1
Thermistor (Boiler return water temp.) (Option) *1
OFF (Open) On (Short)
Refer to SW2-1 in <5.1 DIP Switch Functions>.
Refer to SW2-2 in <5.1 DIP Switch Functions>.
Refer to SW3-2 in <5.1 DIP Switch Functions>.
Normal Heat source OFF/ Boiler operation *2
Standard operation Heater operation/ Boiler operation *2
Refer to SW3-1 in <5.1 DIP Switch Functions>.
Refer to SW3-3 in <5.1 DIP Switch Functions>.
*3
—
10 pulse/kWh
Optional part model
PAC-SE41TS-E
PAC-TH011-E
PAC-TH011-E
PAC-TH011HT-E
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