System Set Up; Dip Switch Functions; Connecting Inputs/Outputs - Mitsubishi Electric ecodan EHPT20Q-VM2EA Installation Manual

5

System Set Up

5.1 DIP Switch Functions

Located on the FTC printed circuit board are 4 sets of small white
switches known as DIP switches. The DIP switch number is printed
on the circuit board next to the relevant switches. The word ON is
printed on the circuit board and on the DIP switch block itself. To
move the switch you will need to use a pin or the corner of a thin
metal ruler or similar.
DIP switch settings are listed below in Table 5.1.1.
Before changing any switch settings, ensure the power supplies to
both cylinder unit and outdoor unit are turned OFF.
Before changing the DIP switch setting, confi rm that the power
supply earth cable is securely connected and prevent the FTC
from being applied with static electricity (e.g. touch a case body
etc.). Otherwise, it may cause a failure of the FTC due to the static
electricity.
DIP switch Function
SW1 SW1-1 —
SW1-2 —
SW1-3 —
SW1-4 —
SW1-5 —
SW1-6 —
SW1-7 —
SW1-8 Wireless remote controller WITHOUT Wireless remote controller WITH Wireless remote controller
SW2 SW2-1 Room thermostat1 input (IN1) logic change Zone1 operation stop at thermostat short Zone1 operation stop at thermostat open OFF
SW2-2 —
SW2-3 —
SW2-4 —
Automatic switch to backup heat source operation
SW2-5 Inactive
(When outdoor unit stops by error)
SW2-6 —
SW2-7 —
SW2-8 —
SW3 SW3-1 Room thermostat 2 input (IN6) logic change Zone2 operation stop at thermostat short Zone2 operation stop at thermostat open OFF
SW3-2 —
SW3-3 —
SW3-4 Electric energy meter WITHOUT Electric energy meter
SW3-5 —
SW3-6 2-zone valve ON/OFF control Inactive
SW3-7 —
SW3-8 Heat meter WITHOUT Heat meter
SW4 SW4-1 —
SW4-2 —
SW4-3 —
SW4-4 Indoor unit only operation (during installation work) *2 Inactive
SW4-5 Emergency mode (Heater only operation) Normal
SW4-6 —
Note:
*1. For safety reasons, this function is not available for certain errors. (In that case, system
operation MUST be stopped and only the water circulation pump keeps running.)
*2. Space heating and DHW can be operated only in indoor unit, like an electric boiler. (Refer
to "5.4 Indoor unit only operation".)
*3. If emergency mode is no longer required, return the switch to OFF position.
24
<Figure 5.1.1>
OFF ON
— — OFF
— — OFF
— — OFF
— — OFF
— — OFF
— — OFF
— — OFF
OFF
— — OFF
— — OFF
— — OFF
Active *1 OFF
— — OFF
— — OFF
— — OFF
— — OFF
— — OFF
WITH Electric energy meter OFF
— — OFF
Active OFF
— — OFF
WITH Heat meter OFF
— — OFF
— — OFF
— — OFF
Active OFF
Emergency mode (Heater only operation) OFF *3
— — OFF
<Table 5.1.1>
5
System Set Up

5.2 Connecting inputs/outputs

OFF ON
1
SW4
6
1 CNP1
1 3 (WHT)
SW3
1 CNPA
(RED)
3
8
1
1 TBO.1
2
3
SW2
4
8
1
SW1
1
CNV1
(WHT)
8 5
CNBHT 1
(BLK)
4
1
CNBH
CNOUT 2
(WHT)
(WHT)
4
7
CNOUC 1 1 CNBC
(BLU)
(GRY)
3 3
Default settings:
2 4 6 8 10
Indoor unit model
1 3 5 7 9
XBL XBN
TBI.1
<Figure 5.2.1>
Signal inputs
Name Terminal block Connector Item
IN1 TBI.1 3-4
IN6 TBI.1 1-2
IN8 TBI.1 5-6
IN9 TBI.1 7-8
IN10 TBI.1 9-10
*1. Connectable electric energy meter and heat meter
● Pulse type
● Pulse duration
● Possible unit of pulse
Those values can be set by the main controller. (Refer to the menu tree in "5.7 Main Controller".)
Wiring specifi cation and local supply parts
Item Name
Signal input Signal input
function wire
Switch
Thermistor inputs
Name Terminal block Connector
TH1 —
Ensure to wire thermistor wirings away from the power line and/or
OUT3 to 13 wirings. Do not splice the wiring to extend or shorten it,
otherwise this could affect correct monitoring of each temperature.
If the wiring is too long, bundle it with a strap to adjust the length in
the cylinder unit.(see the photograph on the right)
*1. The maximum length of the thermistor wiring out of the cylinder
unit is 5 m. When the wires are wired to adjacent terminals, use
ring terminals and electrically insulate the wires.
When the wires are wired to adjacent terminals use ring terminals
F2 F1
and insulate the wires.
6.3A 250V 10A 250V
1
CN01
2
(WHT) 4
6 Note:
CN3C 1
(YLW) 2
Before connecting a wire to the TBI.1, confi rm
that the power supply earth cable is securely
TAB1
LED1
connected and prevent the FTC from being applied
with static electricity (e.g. touch a case body etc.).
1
CN1A 1
SW4
(WHT)
6 4
Otherwise, it may cause a failure of the FTC due to
1
CNPWM 1
(WHT)
SW3 3
CNPWM3 1
the static electricity.
8
(RED) 3
1
LED2
SW2
LED3
CNRF 1
8
(WHT)
1 5
1
CN105
SW1
(RED)
5
8
1
CNIT
(BLU)
5
LED4 CN108
CN2A
CN22
(BLU)
1
(BLU) 1 1
1 1 1
12 14
2
1
11 13 5 5 CN20
2 4 4
5
(RED)
CN2B CNW3 CNW12 CNW5
(YLW) (BLU) (RED) (WHT)
OFF (Open)
— Room thermostat 1 input Refer to SW2-1 in <5.1 DIP Switch Functions>.
— Room thermostat 2 input Refer to SW3-1 in <5.1 DIP Switch Functions>.
— Electric energy meter 1
— Electric energy meter 2 *1
— Heat meter
Voltage free contact for 12VDC detection by FTC (TBI.1 5, 7 and 9 pins have positive voltage.)
Minimum ON time: 40ms
Minimum OFF time: 100ms
0.1 pulse/kwh 1 pulse/kwh 10 pulse/kwh
100 pulse/kwh 1000 pulse/kwh
Model and specifi cations
Use sheathed vinyl coated cord or cable.
Max. 10 m
Wire type: CV, CVS or equivalent
Wire size: Stranded wire 0.13 mm 2 to 1.25 mm 2
Solid wire: ø0.4 mm to ø1.2 mm
Non-voltage "a" contact signals
Remote switch: minimum applicable load 12V DC, 1mA
Item Optional part model
CN20 Thermistor (Room temp.) (Option) PAC-SE41TS-E
ON (Short)
25