Turn on the main power switch of the outdoor unit more than 12 hours before use. When installing an auxiliary heater with a capacity greater than shown above, select an appropriate size switch and cable (diameter) based on the maximum possible electrical current. TOTAL current for the pump(s) MUST be 4A. The total allowable current for parts except pumps is 3A. otherwise the fuse on the FTC circuit board blows.
Energy monitor *3
Electrical connection
FTC (Master) powered via outdoor unit
Install an earth longer than other cables
Please keep enough output capacity of power supply for each individual heater. Insufficient power supply capacity might cause chattering
Do not run other cables except low voltage cables through a slot that the wireless receiver’s cable goes through
Do not bundle power cables together with other cables
Bundle cables as figure above by using clamps
FTC (Master) powered by independent source
FTC (Master) unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)
Please keep enough output capacity of power supply for each individual heater. Insufficient power supply capacity might cause chattering
Do not run other cables except low voltage cables through a slot that the wireless receiver’s cable goes through
Connecting the main controller
- Connect the main controller cable to FTC (Master)
- Installing the main controller
The main controller can be installed either in the switch box or directly on the wall. Route the main control cable from the slot behind the back cover through this access hole. Route the main controller cable through the cable access hole at the top of the main controller.
174.3 Remote Controller Options
1-zone temperature control
2-zone temperature control
194.4. Connecting the thermistor cables
- Connecting the room temp. thermistor (TH1) cable
- Connecting the refrigerant pipe temp. thermistor (TH2) cable
- Connecting the actual DHW tank thermistor (THW5) cable
- Thermistor position and necessity
PACKAGED outdoor unit with hot water tank. with a coolant-water HEX inside) Water INLET side. SPLIT-type outdoor unit with hot water tank and additional heater. without a coolant-water HEX inside). Outdoor unit of the SPLIT type without hot water tank and auxiliary heater. without a coolant-water HEX inside).
214.5 Connecting inputs/outputs
Signal inputs
Connect an appropriate surge absorber to OUT10 (TBO.3 1-2) depending on the load at site
Stranded wire should be processed with insulation-covered bar terminal (DIN46228-4 standard compatible type)
Outputs
Connect them using either way as shown above
Thermistor inputs
Connect the wirings by soldering
Insulate each connecting point against dust and water
How to use TBO.1 to 5
Wiring for heater
The initial setting assumes that the connected auxiliary heater(s) has a built-in thermostat with direct cut-off. When the auxiliary heater(s) connected has a built-in indirect cut-off thermostat, perform wiring according to the following points. Do not remove the jumper wire from connector CNBHT when the auxiliary heater(s) connected has a built-in thermostat with direct disconnection.
The initial setting assumes that the connected heating element has a built-in instant switch-off thermostat.
Wiring for 2-zone temperature control
DIP switch
4.8 2-zone valve ON/OFF control
Room thermostat connection
254.9 Installation procedure for DHW tank
Using SD memory card
Using an SD memory card can simplify the main controller's settings and can save operation logs. Note: To avoid cutting your fingers, do not touch the sharp edges of the SD memory card connector (CN108) on the FTC control board. Check that the SD memory card has a logo on it shown on the right.
Choose the one with a maximum temperature of 55 °C. 3) If the SD memory card is miniSD, miniSDHC, microSD or micro SDHC, use an SD memory card conversion adapter. Inserting or ejecting the SD memory card while the system is on may damage the stored data or the SD memory card. Wait for all LEDs on the FTC control panel to turn off before inserting or ejecting.
Before using a new SD memory card (including the card that comes with the device), always verify that the SD memory card can be safely read and written to by the FTC controller.
275.1 DIP Switch Functions
Outdoor unit type
When the outdoor unit is a PUHZ-RP/SUHZ-SW series, set Dip SW1-2 to ON, other than that, set Dip SW 1-2 to OFF. Note: When Dip SW 1-2 is OFF (55°C) and no electric heater (*) is installed, 'Legionella Prevention Mode' is NOT available.
Functions setting
Operation setting
315.5 Emergency mode (Heater only operation)
- Emergency mode (Boiler operation)
- Indoor unit only operation (during installation work)
- Check
- Self-check
- Safety precautions FOR USER
- Main Controller
After the installation and the wiring and piping of the local application and outdoor units are completed, check for refrigerant leakage, looseness in the power supply or control wiring, incorrect polarity, and power cable is firmly connected. For description of each LED (LED1 to 3) provided on the FTC, refer to the following table. This LED lights up only in the case of the FTC (Master) unit connected to the outdoor unit refrigerant address "0".
Please report this or request permission from the energy supplier before connecting to the system. Describes precautions that must be observed to avoid risk of injury or death to the user. Do not place a gas heater or other open flame appliance in a place where it is exposed to the air coming from the appliance.
This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their security. If the refrigerant gas blows out or leaks, stop the operation of the air conditioner, ventilate the room thoroughly and contact your dealer. Contact your dealer when disposing of the device. lt;Main Controller Parts>.
Current tank water temperature DHW 14 Menu button is locked or switching i.
Setting the Main Controller
General Operation
Main Settings Menu
Initial Settings
For the room sensor settings, it is important to choose the right room sensor depending on the heating mode in which the system will operate. From the sensor settings screen, select a room sensor to be used to monitor the room temperature from Zone1 and Zone2 separately. From the sensor settings screen, select Time/Zone to enable the use of different room sensors according to the time set in the Select Time/Zone menu.
Domestic Hot Water (DHW)/Legionella Prevention
Legionella Prevention Mode settings (LP mode)
Heating/Cooling
Holiday Mode
Schedule timer
Use the F2/F3 buttons to move to the point where you do not want the selected mode to be active, press ENTER to begin. The schedule timer for space heating/cooling and sanitary water is set in the same way. For this reason, password protection is required to prevent unauthorized access to the service settings.
Service Menu
Freeze statistics function An operational function to prevent the water circuit from freezing when the outdoor temperature drops. This function allows the operational setting of the flow temperature range by Ecodan and also the time interval in which the FTC collects and processes the data for the automatic adaptation mode. To minimize loss from frequent switching on and off in mild outdoor temperature seasons.
The maximum supply temperature that enables the heat pump to operate is the same as the maximum temperature set in temp. This happens when the outside ambient temperature rises above the selected temperature for that particular operating mode. 1 - +10 ºC +5 Increase interval c Sets the period during which the same target supply temperature is maintained.
1 - −10 ºC −5 Decrease interval e Set the period for which the same target flow temperature is maintained. Start & Finish f Set the target flow temperature at the start and end of the operation. Disconnect wiring to external inputs from room thermostat, demand control and outdoor thermostat, or the target flow temperature may not be maintained.
This will happen when the outside ambient temperature rises above the selected temp for this particular operating mode.
Engineers Forms
- Requirements
- Pipe work
- Wiring for multiple outdoor units control
- units
- Heating/Cooling & DHW system
- 2-zone temperature control
- Heating/Cooling system (with Boiler)
- Heating/Cooling system (with Hydrobox)*1
- Master unit
- Electrical connection
- Connecting the thermistor cables
- Main controller wiring
- Dip switch functions
- Connecting inputs/outputs
- Do not connect multiple water circulation pumps directly to each output (OUT1). In such a case, connect them via (a) relay(s)
- Stranded wire should be processed with insulation-covered bar terminal (DIN46228-4 standard compatible type)
- Do not connect multiple water circulation pumps directly to each output (OUT1). In such a case, connect them via (a) relay(s)
- Do not connect water circulation pumps to both TBO.1 1-2 and CNP1 at the same time
- Stranded wire should be processed with insulation-covered bar terminal (DIN46228-4 standard compatible type)
Replace the main controller or FTC (Master) control board. ii) If "1-49%" is displayed, there is a communication error between the outdoor unit and the FTC (Master) control board. Check the wiring connections on the outdoor unit control board and the FTC (Master) control board. When the voltage is not 220 to 240V AC, check the wiring of the outdoor unit and the circuit breaker.
If the voltage is not 220 to 240 V AC, check the wiring of the FTC (Master) outdoor unit for faults. The number of indoor units that can be connected to one outdoor unit is one. If the water in the circulation circuit is too hot, the cooling mode starts with a delay to protect the outdoor unit.
The hydrobox or PAC-SIF051B-E or master unit is used as a slave unit (a) Connect each outdoor unit to a slave unit. b) The main controller must NOT be connected to a slave unit. FTC (slave)/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. Note: In accordance with IEE regulations, the circuit breaker/isolation switch on the outdoor unit must be installed with lockable devices (health and safety).
Set Dip SW1-7 (outdoor unit type) on each slave unit depending on each connected outdoor unit type.
How to use TBO.1 to 4
Do not divide the wiring to extend or shorten it as this may affect the correct monitoring of each temperature. If the wires are connected to adjacent terminals, use ring terminals and insulate the wires. Do not connect the water circulation pumps to both TBO.1 1-2 and CNP1 at the same time.
Basic Troubleshooting for multiple outdoor units control
Refrigerant collecting (pumpdown) for split model systems only
Back-up operation of boiler
This FTC is designed to connect the MITSUBISHI ELECTRIC Mr.Slim/Ecodan inverter outdoor unit to local systems. If the conditions are not met, a malfunction may occur due to the protection operation, or the outdoor unit may turn off due to the operation of the protection system. If the heat exchanger is connected below the minimum capacity, fluid backflow or compressor failure may occur.
If the heat exchanger is connected above the maximum capacity, there may be a decrease in efficiency due to lack of refrigerant or overheating of the compressor. Use a pipe with the same diameter as the diameter of the refrigerant pipe connection of the outdoor unit. The velocity of water in pipes must be kept within certain limits of the material to prevent erosion, corrosion and excessive noise generation.
Using water that does not meet these standards may result in damage to the system piping and heating components. Do not use hot water produced by the air-to-water heat pump directly for drinking or cooking. There is also a risk that the water heat exchanger installation may corrode if the required water quality for the air-to-water heat pump system cannot be maintained.
If you wish to use the heated water from the heated pump for these purposes, you must take precautions such as the other heat exchanger in the water pipe system.
