Need Help Installing the IMMERGAS 3.011668 Zone System Connection Kit

[Alaina]

Certainly! Here's a guide to help you install your IMMERGAS 3.011668 Zone System Connection Kit:

1. Safety First: Before you begin, always disconnect the power supply to your boiler. Turn off the upstream switch to ensure safety.
2. Cable Connections: Route the electrical connection cables from the kit through the appropriate cable clamps. Secure the clamps tightly after making all the electrical connections.
3. Zone Valve/Circulator Connections: Connect your zone valves or zone circulator pumps to the "X2" and "X4" terminal boards on the zone kit. For grounding, connect the earthing to terminal board "X3", using the numerical order assigned to each zone.
4. Thermostat Connections: Connect the contacts from your room thermostats to the "X9" terminal board of the zone kit.
5. Boiler Connection: Link the zone control unit to your boiler. Connect the "X5" and "X15" terminal boards of the zone control unit to the corresponding terminal board on the boiler. Remember to remove any jumper wires currently on terminal boards 40 and 41 of the boiler. If your boiler doesn't have terminal 21, make sure your room thermostats don't request heat during the summer to avoid unnecessary pump operation and energy use.
6. Power Supply: Power the zone kit using a 230 V AC mains supply. Use an omnipolar switch and a fuse sized appropriately for the connected loads. Alternatively, you can connect the zone kit's 230 V AC power supply directly to terminals A and B on the boiler, after checking the current draw (fuse 3.15 A).
7. CARV2 Setup: Configure the CARV2 (Comando Amico Remoto) for On-Off operation, following the CARV2 instruction manual. The CARV2 can control zone 1 instead of a room thermostat. Consult the CARV2 manual for instructions on connecting it to the boiler. When the CARV2 requests heating, the zone 1 (main zone) relay will close.
8. External Circulator Pumps (Optional): If you're using external circulator pumps (up to 3 maximum), install any required one-way valves and regulating valves. Consult the flow rate/head graph in your boiler's manual to determine the maximum flow rate within the boiler.

For detailed instructions and specific guidance, always refer to the complete IMMERGAS 3.011668 Zone System Connection Kit instruction manual. For additional assistance, consider contacting the Immergas Consultancy Service.