FTC7 Wiring Guide

Ecodan FTC7 Wiring Guide

Step 3

Setting DIP Switches

Step 5

Configuring Outputs

Step 1

Circuit Breakers & Wire Sizes

Step 2

Power Supply

Step 4

Configuring Inputs

Step 6

Commissioning The System

Selecting the correct circuit breakers and wire size

Step 1)

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Step 2)

Wiring Option 1 – FTC Powered by the outdoor unit

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

Connecting power supply to the indoor unit

TB1

TB2

Plugs will be supplied like this from factory

Wiring Option 1 - Power from heat pump

Wiring Option 2 - Independent power supply

Step 2)

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

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.

Wiring Option 2 - Independent power supply

Step 2)

Connecting power supply to indoor unit

TB1

TB2

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Swap Plugs on CN01 connection to this

Wiring Option 2 - Independent Supply

Setting DIP Switches on the FTC (Indoor Unit)

Step 3)

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

Hot Water Mode

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).

Essential Settings

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

Heating Controls

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)

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

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

Heating Mode

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

Single Heating Zone = SW3-5

OR

OR

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

If using FTC7 with R32 Ecodan unit, turn ON SW6-1

Step 4)

Configuring Inputs - Essential Components

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

Click Image to enlarge

Configuring Inputs - Mitsubishi Electric Controls

Step 4)

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

MELCloud Wi-Fi interface goes into White Plug Connection CN105

Configuring Inputs - 3rd Party Heating Controls

Step 4)

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

Click Image to enlarge

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

Step 4)

Click to enlarge image

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Configuring Outputs: 1x Heating Zone

Step 5)

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.

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

For alternative diverter valve types, please see install manual

Click Image to enlarge

Configuring Outputs: 2x Heating zones with same flow temperatures

Step 5)

Primary Pump OUT1/TBO.1: 1+2

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

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.

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

Click Image to enlarge

For alternative diverter valve types, please see install manual

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

Configuring Outputs: 2x Heating zones with different flow temperatures

Step 5)

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Primary Pump OUT1/TBO.1: 1+2

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

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

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

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

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

For alternative diverter valve types, please see install manual

Click Image to enlarge

Commissioning The System

Step 6)

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

Click here to see video on Intitial setup wizard

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