Mitsubishi Electric PAC-IF021B-E User manual

Flow temp. controller

C-1

1Installation..............................................................C-2

FTC(PAC-IF021B-E) .............................................................. C-2

FTC2(PAC-IF031B-E) ............................................................ C-3

2System ....................................................................C-4

FTC(PAC-IF021B-E) .............................................................. C-4

FTC2(PAC-IF031B-E) ............................................................ C-6

3Electrical work .......................................................C-9

FTC(PAC-IF021B-E) .............................................................. C-9

FTC2(PAC-IF031B-E) .......................................................... C-14

4Switch setting ......................................................C-19

FTC(PAC-IF021B-E) ............................................................ C-19

FTC2(PAC-IF031B-E) .......................................................... C-21

5Before test run .....................................................C-30

FTC(PAC-IF021B-E) ............................................................ C-30

FTC2(PAC-IF031B-E) .......................................................... C-31

6Controller operation ............................................C-32

FTC(PAC-IF021B-E) ............................................................ C-32

FTC2(PAC-IF031B-E) .......................................................... C-42

7Deﬁnition of analog signal..................................C-52

FTC(PAC-IF021B-E) ............................................................ C-52

FTC2(PAC-IF031B-E) .......................................................... C-53

8Troubleshooting...................................................C-54

FTC(PAC-IF021B-E) ............................................................ C-54

FTC2(PAC-IF031B-E) .......................................................... C-55

Flow temp. controller

Contents

Flow temp. controller

C-2

Installation (FTC) Flow temp. controller

C-2

Fig. 1-1

ON/OFF

TEMP.





FTC

1.1 Check the parts (Fig.1-1)

The FTC unit should be supplied with the following parts.

Part Name Q'ty

1FTC unit 1

2Thermistor 2

3Remote controller cable(5m) 1

4Remote controller 1

1.3 Installing the FTC unit (Photo.1-1, Fig.1-2)

1. Remove 2 screws from FTC unit and remove the cover.

2. Install the 4 screws (locally supplied) in 4 holes.

AScrew BCover

CHole for installation

1.2 Choosing the FTC unit installation

location

• Do not install the FTC unit in outdoor location as it is designed

for indoor installation only. (It is not waterproof against raindrop.)

• Avoid locations where the unit is exposed to direct sunlight or

other sources of heat.

• Select a location where easy wiring access to the power source

is available.

• Avoid locations where combustible gases may leak, be pro-

duced, ﬂow, or accumulate.

• Select a level location that can bear the weight and vibration of

the unit.

• Avoid locations where the unit is exposed to oil, steam, or sulfu-

ric gas.

• Do not install in location that is hot or humid for long periods of

time.

(11.5)

Unit:mm

11.5

:12

200

313

3-ELECTRIC WIRE INLET

When installed on a wall: Lower side

278

336

TB61 TB62

TB141TB142



TB6

Fig. 1-2

Photo. 1-1

Flow temp. controller

C-3

Installation (FTC2) Flow temp. controller

C-3

Fig. 1-1

ON/OFF

TEMP.





FTC2

1.1 Check the parts (Fig. 1-1)

The FTC2 unit should be supplied with the following parts.

Part Name Q'ty

1FTC2 unit 1

2Thermistor 3

3Remote controller cable (5m) 1

4Remote controller 1

1.3 Installing the FTC2 unit (

Photo.1-1, Fig. 1-2

)

1. Remove 2 screws from FTC2 unit and remove the cover.

2. Install the 4 screws (locally supplied) in 4 holes.

AScrew BCover

CHole for installation

1.2 Choosing the FTC2 unit installation

location

• Do not install the FTC2 unit in outdoor location as it is designed

for indoor installation only. (The FTC2 circuit board and casing

are not waterproof.)

• Avoid locations where the unit is exposed to direct sunlight or

other sources of heat.

• Select a location where easy wiring access to the power source

is available.

• Avoid locations where combustible gases may leak, be pro-

duced, ﬂow, or accumulate.

• Select a level location that can bear the weight and vibration of

the unit.

• Avoid locations where the unit is exposed to oil, steam, or sulfu-

ric gas.

• Do not install in location that is hot or humid for long periods of

time.

(11.5)

Unit:mm

11.5

:12

200

313

3-ELECTRIC WIRE INLET

When installed on a wall: Lower side

278

336

TB61 TB62

TB141TB142



TB6

Fig.1-2

Photo. 1-1

Flow temp. controller

C-4

System (FTC) Flow temp. controller

C-4

FTC

To start, check your system type by following the ﬂow chart below. (FTC can be used for 3 types of systems.)

+In this system,

• Heating ECO mode of FTC is

not available.

• It is NOT necessary to switch

operation mode to realize

Hot water mode, Anti freeze

mode and Heating ECO mode.

Simply change the target temp.

by Analog signal.

Start

‘Target flow temperature’ is set…

By remote controller

By remote controller Your system is

BASIC SYSTEM.

Your system is

SIMPLE SYSTEM.

Your system is ANALOG TEMP. SYSTEM.

Remote controller

FTC PCB BOX FTC PCB BOX FTC PCB BOX

Remote controller

System controller

(locally supplied)

SIMPLE SYSTEM BASIC SYSTEM ANALOG TEMP. SYSTEM

ON/OFF

Operation mode

- Heating

- Heating ECO

- Hot water

- Anti freeze

- Cooling

Operation mode

- Heating +

- Cooling

Target flow temp.

ON/OFF

Remote controller

ON/OFF

By Non-voltage

Contact signals

By Non-voltage

Contact signals

End user interface

System controller

(locally supplied)

End user interface

To preset

- target temp. for each mode

- target temp. parameters

(See Page C-57-58 for details)

To preset

- analog signal parameters

(See Page C-81 for details)

Analog signal

4-20mA/1-5V/0-10V

Heat Pump switch ON/OFF

and the operation mode

change is done…

By external signals from local controller

(non-voltage contact signals)

By external signals from local controller

(Analog signal:4-20mA/ 1-5V/ 0-10V)

Flow temp. controller

C-5

System (FTC) Flow temp. controller

C-5

Refer to the relevant sections for details according to your system type.

System System diagram Power

supplies

Thermistor

(TH1, TH2)

Switch

setting

External

input

External

output

Outdoor

unit

BASIC SPLIT type

PACKAGED

type

SPLIT type

PACKAGED

type

SPLIT type

PACKAGED

type

ANALOG

TEMP.

SIMPLE

3.5

3.2.1

3.2.2

3.2.1

3.2.2

3.2.1

3.2.2

3.2.1

3.2.2

3.2.1

3.2.2

3.2.1

3.2.2

3.2.1

3.1

3.1.1

3.1

3.1.2

3.1

3.1.1

3.1

3.1.2

3.1

3.1.1

3.1

3.1.2

3.1

3.1.1

3.1

3.1.2

3.1

3.1.1

3.1

3.1.2

3.1

3.1.1

3.1

3.1.2

3.4.1

3.4.2

3.4.1

3.4.2

3.4.1

3.4.2

3.4.1

3.4.2

FTC

TH1 FTC Outdoor unit

FTC Outdoor unit

TH2

Local controller

ON/OFF

MODE Remote controller

(PAR-W21MAA)

Remote controller

(PAR-W21MAA)

Remote controller

(PAR-W21MAA)

Remote controller

(PAR-W21MAA)

Remote controller

(PAR-W21MAA)

Remote controller

(PAR-W21MAA)

Remote controller

(PAR-W21MAA)

Remote controller

(PAR-W21MAA)

Remote controller

(PAR-W21MAA)

Remote controller

(PAR-W21MAA)

Remote controller

(PAR-W21MAA)

Remote controller

(PAR-W21MAA)

FTC

TH1

FTC

TH1

FTC

TH1

FTC

TH1

FTC

TH1

TH2

FTC

TH1

TH2

Local controller

ON/OFF

Temp.

FTC

TH1

TH2

FTC

TH1

TH2

FTC

TH1

TH2

FTC

TH1

FTC

TH1

—

 

Local controller

ON/OFF

MODE

 

Local controller

ON/OFF

MODE

 

Local controller

ON/OFF

MODE

 

Local controller

ON/OFF

Temp.

 

Local controller

ON/OFF

Temp.

 

Local controller

ON/OFF

Temp.

 

SPLIT type : the standard outdoor unit without a plate HEX (Refrigetant-water HEX) inside

PACKAGED type : the Air to Water outdoor unit with a plate HEX (Refrigetant-water HEX) inside

Flow temp. controller

C-6

System (FTC2) Flow temp. controller

C-6

First step (Electrical work)

Power supplies (Outdoor only)

Remote controller or external input

Mode select Temp. setting System diagram

Remote controller

only

Outdoor unit onlyRemote controllerRemote controller

(PAR-W21MAA) (PAR-W21MAA)

3.1

3.1.1 3.2

Remote controller

and external input

Outdoor unit onlyRemote controllerLocal controller

(External input) (PAR-W21MAA)

3.1

3.1.1 3.2

3.3

3.3.1

External input and

analog input

Outdoor unit onlyAnalog inputLocal controller

(External input)

3.1

3.1.1 3.3

3.3.1

3.3.2

Power supplies Operation mode

input

Outdoor unit

FTC2

Remote controller

(PAR-W21MAA)

Outdoor unit

FTC2

Remote controller

(PAR-W21MAA)

Local controller

(ON/OFF,MODE)

Local controller

(ON/OFF,MODE,Temp.)

Outdoor unit

FTC2

The FTC2 is designed for use with a number of heat pump systems. Please refer to the following table to ﬁnd the relevant installation information

for your system.

Flow temp. controller

C-7

System (FTC2) Flow temp. controller

C-7

Second step (thermistor setting)

Outdoor type (SPLIT type / PACKAGED type)

Domestic Hot Water (DHW) tank

Outdoor unit type DHW tank System diagram

SPLIT type TH1: actual flow water temp.

TH2: refrigerant pipe temp.

TH5: actual DHW tank temp.

3.4

TH1: actual flow water temp.

TH2: refrigerant pipe temp.

TH5:

3.4

PACKAGED type TH1: actual flow water temp.

TH2:

TH5: actual DHW tank temp.

3.4

TH1: actual flow water temp.

TH2:

TH5:

3.4

Thermistor

(TH1,TH2,TH5)

Outdoor unit

FTC2

DHW tank

TH1

TH5

Radiator etc.

Heat exchanger

Outdoor unit

FTC2

TH1 Radiator etc.

Heat exchanger

TH1

Outdoor unit

FTC2

DHW tank

TH5

Radiator etc.

TH2

Heat exchanger

TH1

Outdoor unit

FTC2

Radiator etc.

TH2

Heat exchanger

(Present)

(Absent)

Flow temp. controller

C-8

System (FTC2) Flow temp. controller

C-8

Third step (Heater setting)

Immersion heater

Booster heater position

Immersion heater Booster heater

position System diagram

Booster heater

only

both DHW

and Heating

3.5

Booster heater

and

Immersion heater

both DHW

and Heating

3.5

Booster heater

only

Heating only

3.5

Booster heater

and

Immersion heater

Heating only

3.5

Output signal

Booster

heater

FTC2

Sanitary tank

Radiator etc.

Booster

heater

FTC2

Sanitary tank

Radiator etc.

Immersion

heater

Booster

heater

FTC2

Sanitary tank

Radiator etc.

Booster

heater

FTC2

Sanitary tank

Radiator etc.

Immersion

heater

(Present)

(Absent)

Flow temp. controller

C-9

Electrical work (FTC) Flow temp. controller

C-9

FTC

3.1.1. FTC unit power supplied from outdoor unit

The following connection patterns are available.

The outdoor unit must be powered properly. (Details are shown in its installation manual.)

AB C

FA Outdoor unit power supply

B Earth leakage breaker

C Wiring circuit breaker or isolating switch

D Outdoor unit

E FTC unit/outdoor unit connecting cables

F FTC unit

*1.Max. 80 m

*2.The ﬁgures are NOT always against the ground.

S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are not electrically insulated by the transformer or other device.

Notes: 1. Wiring size must comply with the applicable local and national codes.

2. Power supply cables and FTC unit/outdoor unit connecting cables shall not be lighter than polychloroprene sheathed ﬂex-

ible cable. (Design 60245 IEC 57)

3. Install an earth wire longer than other cables.

FTC unit-Outdoor unit

FTC unit model

FTC unit-Outdoor unit earth *1

FTC unit-Outdoor unit S1-S2 *2

FTC unit-Outdoor unit S2-S3 *2

PAC-IF021B-E

AC 230 V

DC24 V

1× Min.1.5

3×1.5 (polar)

Circuit

rating

Wiring

Wire No. × size

(mm

)

Photo. 3-2

Photo. 3-1

S2 S3S1

E: FTC unit/outdoor unit

connecting cables

Earth cable

TB6

3.1. FTC (Photo. 3-1)

1. Remove the cover.

2. Wire the power cable and control cable separately through the

respective wiring inlets given in the photo.

• Make sure to put screws tightly.

AInlet for control cable

BInlet for power

CClamp

DFTC / Outdoor unit connecting terminals

EEarth terminal

Flow temp. controller

C-10

Electrical work (FTC) Flow temp. controller

C-10

3.1.2 Separate FTC unit/outdoor unit power supplies

The following connection patterns are available.

The outdoor unit power must be powered properly (Details are shown in its installation manual).

ACB

FA Outdoor unit power supply

B Earth leakage breaker

C Wiring circuit breaker or isolating switch

D Outdoor unit

E FTC unit/outdoor unit connecting cables

F FTC unit

G FTC unit power supply

If the FTC and outdoor units have separate power supplies, refer to the

table below.

Separate power supply speciﬁcations

FTC unit controller connector (CNS2)

connection change

Disconnected

Outdoor unit DIP switch settings (when

using separate FTC unit/outdoor unit

power supplies only)

ON 3

OFF 1 2 (SW8)

Set the SW8-3 to ON.

FTC unit model PAC-IF021B-E

FTC unit power supply ~/N (Single Phase), 50 Hz, 230 V

FTC unit input capacity

Main switch (Breaker)

*1 16 A

Wiring

Wire No. ×

size

(mm2)

FTC unit power supply & earth 3 × Min. 1.5

FTC unit-Outdoor unit *2 2 × Min. 0.3

FTC unit-Outdoor unit earth –

Circuit

rating

FTC unit L-N *3 AC 230 V

FTC unit-Outdoor unit S1-S2 *3 –

FTC unit-Outdoor unit S2-S3 *3 DC24 V

*1.A breaker with at least 3.0mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).

*2.Max. 120 m

*3.The ﬁgures are NOT always against the ground.

Notes: 1. Wiring size must comply with the applicable local and national code.

2. Power supply cables and FTC unit/outdoor unit connecting cables shall not be lighter than polychloroprene sheathed ﬂex-

ible cable. (Design 60245 IEC 57)

3. Install an earth wire longer than other cables.

Photo. 3-3 CNS2

S2 S3S1

E: FTC unit/outdoor unit

connecting cable

Power Supply Cables

TB6

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