Connection Schematic Diagram For Hydro Box And Water Tank - Gree GMV-S120WL/A-S Service Manual

with the unit.
Installation of water pipe of water tank: safety check valve, filter and cutoff valve must be
installed in inlet pipe according to the installation diagram of the unit( pay attention to the direction
of safety check valve: ―→‖on the valve shall point at water tank). At least one cutoff valve shall be
installed for water outlet pipe.
Installation of blowing tube on the bottom of the water tank: Connect the drain vent with the
floor drain by PPR pipe. A cutoff valve must be installed in the blowing tube and the cutoff valve
must be installed in the place which is convenient for users.
After all pipelines have been installed, execute leak detection. If there is no leakage, execute
insulation work to all pipelines, especially to the valve and pipe joints. Insulating cotton whose
thickness is not less than 15mm is recommended. After wrapping the pipe with insulating cotton,
bundle the pipe, water temp sensor and wires.

(1) Connection schematic diagram for hydro box and water tank

Note:
1. Only temp sensor in the bottom part is equipped in hydro box and the temp sensor in the
upper part is self-provided by water tank.
2. Connect temp sensor port 1 of water tank with the water temp sensor on the upper part of
hydro box.
3. Connect temp sensor port 2 of water tank with the water temp sensor on the lower part of
hydro box.
4. The connection method of upper temp sensor is mutual connection in the air, connected
with temp sensor port 2 of water tank.
5. If the water tank just has one temp sensor port, connect the temp sensor on the upper part
of hydro box with temp sensor port of water tank.
GMV5 Home DC Inverter Multi VRF Units
165