MRCOOL Closed Loop Installation Kit 3 Ton with Straight Manifold GCIK-CL3T-SM

The MRCOOL Closed Loop Installation Kit 3 Ton with Straight Manifold (model GCIK‑CL3T‑SM) is a professionally designed geothermal ground‑loop accessory kit engineered for use with 3‑ton MRCOOL GeoCool Inverter Series heat pump systems. It provides all the essential components needed to establish a complete closed‑loop geothermal field, enabling efficient and reliable ground‑source heat exchange for year‑round heating and cooling performance.

This comprehensive installation kit includes pre‑sized loop piping and components matched to the requirements of a 3‑ton system — featuring three 600‑foot rolls of 3/4″ high‑density polyethylene (HDPE) loop pipe for robust underground circulation, along with a 3‑circuit insulated header in a straight configuration to support a clean and efficient layout in mechanical rooms. A Geo‑Pulse non‑pressurized flow center with a single pump ensures consistent fluid movement through the loop, while the geothermal hose kit with 90° adapters makes it easier to connect the loop field to the heat pump.

To protect the system and enhance thermal transfer, the kit includes 5 gallons of Propylene Glycol heat transfer fluid, helping safeguard against freezing and optimizing performance. Each component is built with durable, corrosion‑resistant materials suited for long‑term buried use, making the kit a reliable foundation for geothermal installations.

The straight manifold configuration is especially suited for installations where a linear loop layout is preferred, reducing the number of fittings and simplifying setup in spaces where direct routing is easiest. Designed for residential geothermal applications, this kit bundles all the major loop components into one solution, supporting efficient installation and dependable ground‑source heat pump performance.

Features

• Straight Manifold Configuration – Simplifies in-line connections and ensures a clean, efficient layout in mechanical spaces.
  
• Complete Component Set – Includes pre-sized piping, connectors, and accessories for a full 3-ton geothermal installation.
  
• Reliable Performance – Built with durable, corrosion-resistant materials to withstand long-term buried use.
  
• Optimized for MRCOOL – Specifically designed to match MRCOOL 3-ton geothermal heat pump requirements.
  
• Ease of Installation – Reduces labor and speeds up system setup with bundled, pre-matched parts.

Specifications

Applications

• Residential Installations – Designed for homes using 3-ton geothermal heat pump systems.

• Efficient Energy Systems – Supports sustainable HVAC solutions by enabling closed-loop geothermal setups.

• New Builds – Ideal for contractors installing geothermal units in new residential constructions.

• Upgrades and Retrofits – Suitable for replacing outdated or undersized loop systems.

• Straight-Line Mechanical Rooms – Perfect for areas where linear alignment is preferred over angled routing.

What’s Included

• MRCOOL Closed Loop Installation Kit 3 Ton with Straight Manifold (GCIK-CL3T-SM)
  

• User Manual

Frequently-Asked Questions

Can I use this kit with other geothermal brands?
This kit is tailored for MRCOOL systems. For other brands, compatibility should be verified before installation.

Is the kit DIY-friendly?
While components are pre-selected to ease installation, we strongly recommend professional installation for optimal performance.

What’s the benefit of a straight manifold over angled?
Straight manifolds are best suited for applications where space allows direct routing of loop lines, resulting in quicker installations and fewer fittings.