Water Circuit Components - LG MULTI V HYDRO KIT ARNH963K2A4 Installation Manual

Medium temperature

Table of Contents

The water circuit guidelines and diagrams are for illustrative purposes and are to be used for references only; not all components and accessories

local, state, and federal codes.

Water Circuit Components (For Illustration Purposes Only)

For the water circuit, use the closed loop type. An open loop type circuit will allow impurities into the water circuit, which will damage the Hydro Kit.

1. Select parts that exceed the water pressure specifications needed for the Hydro Kit.

2. See the "Condensate Piping" section for guidance on the drain connection and piping (1).

3. To replace the connected device easier if it warrants it in the future, install a dielectric union fitting where "dissimilar" pipe materials are

used. If similar pipe materials are used, install a standard union joint (2).

4. Install service ports to clean the heat exchanger at each inlet and outlet of the water pipe (3).

5. Always install the 50 mesh water circuit strainer (provided with the Hydro Kit) on a horizontal run of the water inlet piping (4). For specific

installation steps, see the "Strainer Installation" section on page 37. If a replacement strainer is necessary, see the "Accessories" section

in this manual.

6. Install an air vent / air separator (5) in the section of the water pipe with the highest elevation. This prevents air bubbles from forming in

the pipe system that would impede water flow.

WARNING

drops, there is the potential for the heat exchanger to burst, causing physical injury and / or death.

drops, there is the potential for the heat exchanger to burst, causing product damage and damage to the surrounding location.

7. Install thermometers (6) and pressure meters (7) at the inlet and outlet of the water circuit.

8. Install a drain valve (8) that can be used when replacing a part or providing service.

9. Install shut-off valves (9) on the inlet pipe upstream of the strainer, and to the outlet pipe of the heat exchanger. Use when a part needs

replaced, and for heat exchanger and strainer cleaning / maintenance.

10. In applications such as bivalent systems, flow check valves can be installed at each outlet water pipe.

11. Install an expansion tank based on the volume of the water circuit.

12. A balancing valve (with flow meter) can be installed to ensure 100% of nominal flow.

13. Install a circulation pump that meets system water flow specifications detailed in the Hydro Kit Engineering Manual.

INSTALLING THE WATER CIRCUIT

Due to our policy of continuous product innovation, some specifications may change without notification.