Heating Option; Hot Water Coil - Lennox e-Baltic D BOX 55 Installation, Operating And Maintenance

HEATING OPTION

HEATING OPTION

HOT WATER COIL

HYDRAULIC CONNECTIONS
Hot water coils offer fully modulating control through the use of a 3-way valve. The hot
water coil, connections and valves are all tested at pressure of 15 bars. Frost protection
is provided by forcing the opening the 3-ways valve when supply temperature from hot
water coil falls below 8°C and by stopping the outdoor fan when that supply temperature
falls below 6°C. In addition to that, the 3-ways is also opened at 10% value if the outdoor
temperature falls below an adjustable value.
Hot water coils are always factory fitted, wired and fully tested, prior to shipment.
Hot water coil includes automatic purge system.
The hot water coil is fitted with a three-ways proportional valve and two isolating shut
off valves. Two spanners must be used to tighten the connections. One spanner must
maintain the valve body when connecting the pipe-work to the main. 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.
• Check the various connections for possible leaks
FREEZE PROTECTION
1) Glycol for 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 and avoid icing under winter conditions.
WARNING: Mono-ethylene glycol based fluids may produce corrosive agents when mixed with air
2) Drain the installation
You must ensure that the manual or automatic air bleeders have been installed on all high points in the system. In order to
drain the system, check that all the drain cocks have been installed on all low points of the system
HOT 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
e-BALTIC-IOM-2020.12-EN
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