FTC7 Wiring Guide

Commissioning The System

Configuring Outputs

Configuring Inputs

Setting DIP Switches

Circuit Breakers & Wire Sizes

Power Supply

Step 1

Step 5

Step 6

Step 2

Step 3

Step 4

Ecodan FTC7 Wiring Guide

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Selecting the correct circuit breakers and wire size

Step 1)

The biggest advantage of option 1, is it reduces the chances of getting an E6 error as both units will power on and off together.

NOTE: Power supply polarity to the outdoor unit must be correct and to current wiring regulations

Wiring Option 1 – FTC Powered by the outdoor unit

Step 2)

NOTE: Connections shown here are for the outdoor unit

Step 2)

Wiring Option 1 – FTC Powered by the outdoor unit

TB2

TB1

Wiring Option 1 – FTC Powered by the outdoor unit

Step 2)

Wiring Option 1 - Power from heat pump

Plugs will be supplied like this from factory

Connecting power supply to the indoor unit

The biggest advantage of option 2, is it ensures there is still power available to the FTC for operating the immersion heater in emergency mode. Emergency mode can be activated by turning on SW4-5 on the FTC.

NOTE: Connection S1 is not used for wiring option 2 - Independent power supply

Step 2)

Wiring Option 2 - Independent power supply

TB2

TB1

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Wiring Option 2 - Independent power supply

Step 2)

Wiring Option 2 - Independent Supply

Swap Plugs on CN01 connection to this

Connecting power supply to indoor unit

2x Heating zones with different flow temperatures (FTC controlling mixing valve) = SW3-5, SW2-6 & SW2-7

OR

OR

Single Heating Zone = SW3-5

2x Heating zones with the same flow temperature = SW3-5 & SW3-6

SW1-3 = Domestic Hot Water Mode Active SW1-4 = FTC to control Immersion Heater SW3-7 = Mitsubishi Electric Pre-plumbed Cylinder In Use. SW3-7 OFF = 3rd Party Coil Cylinder in use (only when SW1-3 is ON).

Heating Mode

Hot Water Mode

SW1-7 MUST BE ON = Monobloc Heat Pump In Use SW2-8 MUST BE ON = Flow Sensor In Use

Essential Settings

Step 3)

Setting DIP Switches on the FTC (Indoor Unit)

All inputs MUST be Volt-free Or Connected via Volt-free Relay

SW2-1 = 3rd-Party Control for Heating Zone 1 Connected via IN1 SW3-1 = 3rd-Party Control for Heating Zone 2 Connected via IN6

SW1-8 = Mitsubishi Electric Wireless Room Stat(s) In Use. (Maximum of 8) SW5-2 = Auto Adaption Mode Active (Only compatible with Mitsubishi Electric wireless room stats)

Heating Controls

Turn ON relevant DIP Switches as shown below, all remaining DIPS to be OFF.

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Component / Connection Main Remote Controller / TB5 - Screw Connection Flow Sensor / CN1A - White Plug Hot Water Thermistor / CNW5 - Blue Plug Primary Flow & Return Thermistors / CNW12 - Red Plug

Configuring Inputs - Essential Components

Step 4)

MELCloud Wi-Fi interface goes into White Plug Connection CN105

Step 4)

Mitsubishi Electric receiver for wireless thermostat goes into Red Plug Connection CNRF

Configuring Inputs - Mitsubishi Electric Controls

Step 4)

All inputs MUST be Volt-free Or Connected via Volt-free Relay

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Configuring Inputs - 3rd Party Heating Controls

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Click to enlarge image

Configuring Inputs: Additional thermistors for 2x heating zones with different flow temperatures

Step 4)

Full Diverter Valve OUT4/TBO.2: 7,8+9

Primary Pump OUT1/TBO.1: 1+2

Heating Zone 1 Pump OUT2/TBO.1: 3+4

Note: Connections shown are for standalone applications. Mitsubishi Electric pre-plumbed cylinders will use plug connections CNP1 for the primary pump and CNV1 for the diverter valve.

Configuring Outputs: 1x Heating Zone

Step 5)

Click Image to enlarge

For alternative diverter valve types, please see install manual

Full Diverter Valve OUT4/TBO.2: 7,8+9

Heating Zone 1 Pump OUT13/TBO.1: 3+4

Heating Zone 2 Pump OUT3/TBO.1: 5+6

Primary Pump OUT1/TBO.1: 1+2

Note: Connections shown are for standalone applications. Mitsubishi Electric pre-plumbed cylinders will use plug connections CNP1 for the primary pump and CNV1 for the diverter valve.

For alternative diverter valve types, please see install manual

Click Image to enlarge

Configuring Outputs: 2x Heating zones with same flow temperatures

Step 5)

Please Note: Lower temperature zone must be on Zone 2, and additional temperature sensors are required for heating zones 1&2. Description: Flow & Return Temperature Sensors 5m Cable Model Name: PAC-TH011-E. Product Reference Code: 258695

Heating Zone 1 Pump OUT2/TBO.1: 3+4

Mixing Valve OUT5/TBO.2: 1+2+3

Full Diverter Valve OUT4/TBO.2: 7,8+9

Heating Zone 2 Pump OUT3/TBO.1: 5+6

Primary Pump OUT1/TBO.1: 1+2

For alternative diverter valve types, please see install manual

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Click Image to enlarge

Step 5)

Configuring Outputs: 2x Heating zones with different flow temperatures

Click here to see video on Intitial setup wizard

Once steps 1-6 have been completed, you are ready to power on the system and commission the Main Remote Controller

Scan the QR code or visit: https://les.mitsubishielectric.co.uk/ecodan-installer

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Commissioning The System

Step 6)