3
installation Continued
InstallatIon
1. Carefully remove the coil from the shipping package to avoid
damage to the finned surface area. Damaged fins can be
straightened using an appropriate fin comb. If a mist elimina-
tor was purchased, remove it before installation. See Figure 3
on Page 4.
2. For coils with removable heads, check the torque on the nuts
before installing. Refer to Maintenance on Page 4 for recom-
mended torque values.
3. Modine recommends cleaning the coil with a commercially
available coil cleaner prior to installation. Refer to Mainte-
nance on Page 4 for cleaning recommendations.
Return
Air
Supply
Air
Universal
Right
Left
4. Check the coil hand designation to insure that it matches the
system. Water and glycol coils are generally plumbed with the
supply connection located on the bottom of the leaving air-side
of the coil and the return connection at the top of the entering
air-side of the coil. This arrangement provides counter flow
heat exchange and positive coil drainage. If a universal coil is
supplied, cap off the two unused connections.
5. Standard coils must be mounted level to insure drainability.
Refer to Mounting on page 1 for leveling requirements. Coils
with intermediate headers and coils with removable box style
headers can be pitched 0.125” per foot of coil finned length
towards the coil’s header/connection end.
6. Proper clearance should be maintained between the coil and
other structures such as the fan, filter racks, transition areas,
etc..
7. Once installed, the coil should be pressurized to 100 psig
with dry nitrogen or other suitable gas. The coil should be left
pressurized for a minimum of 10 minutes. If the coil holds
the pressure, the hook-up can be considered leak free. If the
pressure drops by 5 psig or less re-pressurize the coil and wait
another 10 minutes. If the pressure drops again, there is more
than likely one or more small leaks which should be located
and repaired. Pressure losses greater than 5 psig would indi-
cate a larger leak that should be isolated and repaired. If the
coil itself is found to be leaking, contact your local Modine coil
representative.
8. All field brazing and welding should be performed using high
quality materials and an inert gas purge (such as nitrogen) to
reduce oxidation of the internal surface of the coil.
9. All field piping must be self supporting. System piping should
be flexible enough to allow for thermal expansion and contrac-
tion of the coil.
10. General piping diagrams can be found in Figure 1 - Horizontal
Airflow and Figure 2 - Vertical Airflow.
11. If a mist eliminator was purchased with the coil installed, place
the mist eliminator into its brackets. Make sure the mesh is
aligned with the coil finned area (Figure 3 Mist Eliminator).
Figure 1. Horizontal airflow
Vent
Drain
Union
Dirt Leg
Cap
Gate Valve
Tee
Air Vent
Supply
Return
Air Flow
Figure 2. Vertical airflow
Supply
Air Vent
Side Vent
Plug
Gate
Valve
Return
Tee
Dirt Leg
Cap
Drain Valve
Union
Side Drain Plus
Air Flow