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Nomenclature
Mounting
1. Position the coil such that the liquid header is at the
entering airside of the coil and the hot gas header is at the
leaving airside of the coil. This orientation provides counter
flow heat exchange, which is required for proper coil
performance. (Fig. 1).
2. The hot gas connection is located at the top of the hot gas
header and the liquid connection is located at the bottom
of the liquid header when properly installed. (Fig. 1)
Nomenclature and Installation
Figure 1 - Condenser Coils
5 = Tube O.D.
3 = 0.375”
4 = 0.500”
5 = 0.625”
W = Coil Type
C = Condenser
N = Circuiting
N = Normal - Single Circuit
F = Face Control - Multiple
Circuits
14 = Fins Per Inch
06 = Rows
C = Fin Design
A - flat (Al, Cu)
B - corrugated (Al, Cu)
C - sine wave (Al, Cu)
D - raised lance (Al)
F - flat (SS, CS)
G - corrugated (SS, CS)
H - sine wave (SS, CS, Al, Cu)
24.00 = Fin Height (in)
144.00 = Finned Length (in)
5 C N 14 06 C 24.00 x 144.00
Coil Types
1. Heatcraft coil model CN is used for applications where capacity
control is not required for a single compressor circuit.
2. Face control (model CF) is another coil option offered. Face
control is the simplest form of capacity control. Type CF
coils are normally furnished with two or more hot gas
connections and two or more liquid connections offering
various capacity reduction capabilities.
Installation
1. Carefully remove the coil from the shipping package to
avoid damage to the finned area. Damaged fins can be
straightened using an appropriate fin comb.
2. Luvata recommends cleaning the coil with a commercially
available coil cleaner prior to installation. Refer to
Maintenance on Page 4 for cleaning recommendations.
3. Proper clearance should be maintained between the coil and
other structures such as the fan, guards, transition areas, etc.
4. All field brazing and welding should be performed using high
quality materials and an inert gas purge (such as nitrogen) to
reduce contamination by oxidation of the internal surface of
the coil.
5. Connect any fittings, valves, and bypass lines to the coil.
6. Luvata recommends vibration suppressors between the
incoming hot gas and the compressor to guard against stress
cracks in the connections and brazed joints.
7. Pressurize the coil, bypass line (if any), and connections to
100 psig with dry nitrogen or other suitable gas. The coil
should be left pressurized for a minimum of 10 minutes
8. If the pressure does not change, the hook-up can be considered
leak free. If the pressure drops by 5 psi or less, repressurize
the coil and wait another 10 minutes. If the pressure drops
again, there are more than likely one or more small leaks,
which should be located and repaired. Be sure to check
valves and fittings as potential sites for leakage or bleed. If
the coil is found to be leaking, contact your local Luvata
Heatcraft coil representative. Unauthorized repair of the coil
may void the coil’s warranty.
9. Use a vacuum pump to evacuate the coil and any
interconnecting piping that has been open to atmospher.
Measure the vacuum in the piping using a micron gauge
located as far from the pump as possible (the vacuum at
the pump will be greater than the rest of the system).
Evacuate the coil to 500 microns or less then close the valve
between the pump and the system. If the vacuum holds to
500 microns or less for one minute, the system is ready to be
charged or refrigerant pumped down in another portion of
the system can be opened to the coil. A steady rise in microns
