Connecting Inputs/Outputs; Signal Inputs; Thermistor Inputs - Mitsubishi Electric Ecodan EHST20 serie Para El Instalador

5
System Set Up

5.2 Connecting inputs/outputs

CNP1(WHT)
１
２
３ 1 3
４
５
TBO.1
６
７
1
８
CNV1
９
(WHT)
１０ 5
１１
１２
１３
１４
１
２
３
４
５
６
TBO.2
７
８
９
１０
１１
１２
１３
１４
1
1
CNBH
CNIH
(WHT)
3
(ORN)
7
3 1
1
CNBC CNBHT
2
(GRY) (BLK)
3 1 3 1
CN21 CNW12
CN2F CNW5
CN20
(YLW)
(YLW) (RED) (WHT)
(RED)
1
1 1 1
1
2
3 2 3
4
２ ４ ６ ８ １０ １２ １４ ２
１ ３ ５ ７ ９ １１ １３ １ ３
TBI.1
<Figure 5.2.1>

Signal inputs

Name Terminal block Connector Item
IN1 TBI.1 1-2 —
IN2 TBI.1 3-4 CN2F
IN3 TBI.1 5-6 —
IN4 TBI.1 7-8 —
IN5 TBI.1 9-10 —
IN6 TBI.1 11-12 —
IN7 TBI.1 13-14 —
*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 controller to select "Boiler" in "External input setting" screen in the service menu.
Wiring specification and field supply parts
Item Name Model and specifications
Signal input Signal input Use sheathed vinyl coated cord or cable.
function wire Max. 10 m
Wire type: CV, CVS or equivalent
Wire size: Stranded wire 0.5 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 7-8 —
THW7 TBI.2 9-10 —
THW8 TBI.2 1-2 —
THW9 TBI.2 11-12 —
THWB1 TBI.2 3-4 —
THWB2 TBI.2 5-6 —
Do not splice the wiring to extend or shorten it, or this could affect correct monitoring of each temperature.
If the wiring is too long, bundle it with a strap to adjust the length.
*1. The maximum length of the thermistor wiring is 5 m.
When the wires are wired to adjacent terminals, use ring terminals and insulate the wires.
CN01 5
(BLK)
1
CN3C 1
(BLU)
3
FT C 4
LED3
1
CN105
(RED)
5
1
CNRF
(WHT)
5
CNPWM
LED4 LED5
(WHT)
LED2
CN22
(BLU)
CN108
CNW3
SW4
(WHT)
1
LED1
1 6
2
SW2 SW1
8 8
1 1
４ ６ ８ １０ １２ １４
SW3
５ ７ ９ １１ １３
8
1
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)
Solid wire: ø0.65 mm to ø1.2 mm
Item
Thermistor (Room temp.) (Option) *1
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
When the wires are wired to adjacent terminals use ring terminals and insu-
late the wires.
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>.
Optional part model
PAC-SE41TS-E
—
—
—
—
PAC-TH011-E
PAC-TH011-E
PAC-TH011HT-E
28