Airwell Wespak 1.39 [10/18] Water coil connections
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Airwell Wespak 1.39 [10/18] Water coil connections

Airwell Wespak 1.39 [10/18] Water coil connections
8
6 - Water Connections
6.1 - Water Coil Connections
Each water coil is equipped with headers having 1" male
threaded type connection on water supply and water
return.
Air vent must be installed at highest point of the water
piping.
To ensure an optimum heat transfer efficiency, connections
of water supply and return should be arranged in such a
way that a counter flow configuration between air and water
is obtained.
Flexible hoses are recommended for coil connections.
Tighten normally the water connections. Note that an
excessive tightening can cause too strong material stresses
at the time of significant temperature changes.
All water lines should be insulated to prevent sweating and
heat loss.
Caution
If the units are not equipped with control valves, the air
temperature must not exceed 50 °C.
Warning
To avoid any damage on coil, use two spanners to tighten
the water pipe fittings on each header.
6.2 - Condensate Drain Connection
The condensate drain pan is supplied with 5/8" OD copper
tube outlet.
Ensure that water condensate will be properly drained out
from the drain pan which must be connected to the main
drain piping.
The drain line must be installed with a downward slope.
Ensure water trap is available on drain piping.
On completion, the drain line should be insulated.
Caution
Check that there is no counter-slope which would prevent
condensates from flowing.
Warning
All foreign material must be removed from the drain
pan.
MODELS 1.39 2.69 3.99
Number of rows 4 4 4
Water volume (l)
2.3 3.4 4.5
MODELS 1.39 2.69 3.99
Number of rows 2 2 2
Water volume (l)
1.3 1.9 2.4
Cooling coil water volume
Heating coil water volume
Siphon for condensate evacuation
B
AA
The height A must be equal to 2 times the value of the
negative pressure present in the condensate reception zone
(example : negative pressure = 40 mm, height A = 80 mm,
height B = 160 mm).

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