Hot And Cold Water Coils - Lennox eNeRGy Series Installation, Operating And Maintenance

HOT AND COLD WATER COILS

Hot (and cold) water coils
The hot (and cold) water coil is fitted with a three way proportional valve. Two spanners must be used to tighten the connections. One
spanner must maintain the valve body when connecting the pipe. Failure to do so may damage the pipes joints and invalidates the
warranty.
Filling up and starting the system
• Adjust the control for Heating by reducing the simulated ambient temperature down to 10°C
• Check that the red indicators located under the valve actuator are moving correctly with the signal.
• Fill the hydraulic system and bleed the coil using the air vents. Check incoming hot water flow rate.
• Check the various connections for possible leaks
Maximum working pressure :
Maximum working temperature :
Freeze protection
Check the hydraulic system contains glycol for protection against freezing. Glycol is the only effective protection against
freezing. The antifreeze must protect the unit against freezing under winter conditions.
Warning: glycol based fluids may produce corrosive agents when mixed with air.
Drain the installation
You must ensure that the manual or automatic air vents h a ve been installed on all high points in the system. In order to
drain the system, check that all the drain valves have been installed on all low points of the system.
Water coils frozen due to low ambient conditions are not covered by the warranty.
Electrolytic corrosion
Attention is drawn to the corrosion problems resulting from electrolytic reaction created by unbalanced earth connections.
Any coil damaged by electrolytic corrosion is not covered by the warranty.
Cold water coil specificity
In case of cold water coil, it's necessary to insulate the water pipes of the water loop inside the unit to prevent any condensing
risk.
eNeRGy-IOM-2020.11-EN
8 Bars
110 °C
• •
45