Mitsubishi Electric PAC-IF082B-E - 4.5 Connecting Inputs;Outputs

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4.5 Connecting inputs/outputs
For multiple outdoor units control with FTC (Sub), see section 9.
en
4. Electrical work
Signal inputs
Item Name Model and specications
Signal input
function
Signal input
wire
Use sheathed vinyl coated cord or cable: 30 m max.
Wire type: CV, CVS or equivalent
Wire size: Stranded wire 0.13 mm² to 0.52 mm²
Solid wire: ø0.4 mm to ø0.8 mm
Switch Non-voltage “a” contact signals
Remote switch: minimum applicable load 12 V DC, 1 mA
Wiring specication and local supply parts
Name
Terminal
block
Con-
nector
Item OFF (Open) ON (Short)
IN1 TBI.1 7-8 —
Room thermostat 1 input *1 Refer to SW2-1 in <5.1 DIP switch functions>.
IN2 TBI.1 5-6 —
Flow switch 1 input Refer to SW2-2 in <5.1 DIP switch functions>.
IN3 TBI.1 3-4 —
Flow switch 2 input (Zone 1) Refer to SW3-2 in <5.1 DIP switch functions>.
IN4 TBI.1 1-2 —
Demand control input Normal Heat source OFF/ Boiler operation *3
IN5 TBI.2 7-8 — Outdoor thermostat input *2 Standard operation Heater operation/ Boiler operation *3
IN6 TBI.2 5-6 — Room thermostat 2 input *1 Refer to SW3-1 in <5.1 DIP switch functions>.
IN7 TBI.2 3-4 —
Flow switch 3 input (Zone 2) Refer to SW3-2 in <5.1 DIP switch functions>.
IN8 TBI.3 7-8 —
Electric energy meter 1
*4IN9 TBI.3 5-6 — Electric energy meter 2
IN10 TBI.2 1-2 — Heat meter
IN11 TBI.3 3-4 —
Smart grid ready input *5
IN12 TBI.3 1-2 —
IN13 TBI.4 3-4 — Forced cooling mode Refer to SW7-2 in <5.1 DIP switch functions>.
IN15 TBI.4 1-2 — Cooling limit temp. Refer to SW7-3 in <5.1 DIP switch functions>.
INA1 TBI.6 3-5 CN1A
Flow sensor input *6
*1. Set the ON/OFF cycle time of the room thermostat for 10 minutes or more; otherwise the compressor may be
damaged.
*2. If using outdoor thermostat for controlling operation of heaters, the lifetime of the heaters and related parts may
be reduced.
*3. To turn on the boiler operation, use the main remote controller to select [Boiler settings] in [Operation settings]
from [Service].
*4. Connectable electric energy meter and heat meter
● Pulse type Voltage free contact for 12 VDC detection by FTC
(TBI.2 1 pin, TBI.3 5 and 7 pins have a positive voltage.)
● Pulse duration Minimum ON time: 40ms
Minimum OFF time: 100ms
● Possible unit of pulse 0.1 pulse/kWh 1 pulse/kWh 10 pulse/kWh
100 pulse/kWh 1000 pulse/kWh
Those values can be set by the main remote controller. (Refer to the menu tree in "7.2 Main remote controller".)
*5. As for the smart grid ready, refer to "4.9 Smart grid ready".
*6. Connectable ow sensor
● Power supply 5 V DC
● Measuring range 5 to 100 L/min
Those values can be set by the main remote controller. (Refer to [Auxiliary settings] on this page.)
● Flow signal 0.5 V (at minimum ow rate) to 3.5 V (at maximum ow rate)
<Fig. 4.5.1>
[Auxiliary settings]
This function is used to set the parameters for any auxiliary parts used in the system
Menu subtitle Function/ Description
[Economy settings for pump] Water pump stops automatically in certain period of time from when operation is nished.
[Delay] Time before pump switched o󰀨*1
[Electric heater (Heating)] To select “WITH booster heater (ON)” or “WITHOUT booster heater (OFF)” in heating mode.
[Delay] The minimum time required for the booster heater to turn ON from after heating mode has started.
[Electric heater (DHW)] To select "WITH (ON)" or "WITHOUT (OFF)" booster heater or immersion heater individually in DHW mode.
[Delay] The minimum time required for the booster heater or immersion heater to turn ON from after DHW mode has started.
(This setting is applied for both booster and immersion heater.)
Mixing valve 1/2 control
*2
[Running] Period from valve fully open (at a hot water mixing ratio of 100%) to valve fully closed (at a cold water mixing ratio of 100%)
[Interval] Interval (min.) to control the mixing valve.
[Flow sensor] *3 [Minimum] The minimum ow rate to be detected at ow sensor.
[Maximum] The maximum ow rate to be detected at ow sensor.
*1. Decreasing "time before pump switched o󰀨" may increase the duration of stand-by in heating/cooling mode.
*2. Set the running time according to the specications of the actuator of each mixing valve. It is recommended to set the interval to 2 minutes that is a default value.
With the interval set longer, it could take longer to warm up a room.
*3. Do not change the setting since it is set according to the specication of ow sensor attached to the indoor unit.
Note:
Stranded wire should be processed with insulation-covered bar terminal
(DIN46228-4 standard compatible type).