FloAire DX COIL User Manual

EVAPORATOR COIL (DX)

INSTALLATION

OPERATION

AND

MAINTENANCE

Commercial Products

PO Box 1457 / 1000 Heatcraft Drive, Grenada, MS 38902-1457

Tel: [phone] Fax: [phone]

Email: [e-mail]

Web Site: www.heatcraft.com

EVAPORATOR IOM

Guidelines for the installation, operation and maintenance of Heatcraft’s direct expansion (DX)
cooling coils have been provided to help insure proper performance of the coils and their longevity .
These are general guidelines that may have to be tailored to meet the specific requirements of any
one job. As always, a qualified party or individual should perform the installation and maintenance
of any coil. Protective equipment such as safety glasses, steel toe boots and gloves are recommended
during the installation and routine maintenance of the coil.

Receiving Instructions

1. All Heatcraft coils are factory tested, inspected and carefully packaged.

2. Damage to the coils can occur after they have left the factory . Therefore, the coils should
be inspected for shipping damage upon receipt. The freight bill should also be checked
against items received for complete delivery .

3. Damaged and/or missing items should be noted on the carrier’s freight bill and signed by
the driver.

4. For additional assistance, contact your local Heatcraft representative.

Nomenclature

Tube O.D. Finned Length (inches)
4=1/2”
5=5/8” Fin Height (inches)

Coil Type Fin Design
E = Evaporator A - flat (Al, Cu)

Circuiting C - sine wave (Al, Cu)
N = Normal F - flat (SS, CS, Al, Cu)
F = Face Control G - corrugated (SS, CS, Al, Cu)
R = Row Control H - sine wave (SS, CS, Al, Cu)
J = Interlaced
K = Interlaced Face Control Rows Deep

Mounting

1. Position the coil such that the suction header is at the entering air-side of the coil and the
distributor tubes are at the leaving air-side of the coil. This orientation provides counter­flow heat exchange which is required for proper coil performance.

2. The suction connection is located at the bottom of the coil when properly installed.

5 E N 14 06 C 24.00 x 144.00

B - corrugated (Al, Cu)

Fins Per Inch

3. See Figure 1 - Evaporator Coils.

1

EVAPORATOR IOM

EN

NORMAL

Rows

2,3,4,5

6,8,10,12

FACE CONTROL

6,8,10,12

EJ

INTERLACED

Rows

3,4,6,8,10,12

2 Distributors

EF

Rows

2,3,4,5

ER

ROW CONTROL

6 Row

EK

INTERLACED

Face Control

Rows 4,6,8,10,12

4 Distributors

Figure 1 - Evaporator Coils

Coil Types

1. Heatcraft’s model EN evaporator is used for applications where capacity control is not
required. Single or multiple distributors are available depending on the number of cir­cuits required. Model EN evaporators utilize dual suction connections when multiple
distributors are used.

2. Face control (model EF) is another evaporator coil option offered by Heatcraft. Face
control is the simplest form of capacity control. Type EF coils are normally furnished
with two distributors and two suction connections offering 50% capacity reduction ca­pabilities.

3. Heatcraft offers a row control (ER) option for six row evaporators. These coils are split
two rows and four rows which offer approximately a 50% capacity reduction.

4. Heatcraft’s EJ coils come with interlaced circuiting. This form of capacity control uti­lizes two distributors with each feeding every other tube in the first row of the coil. Each
distributor has a separate suction connection.

5. For applications that require face control and interlaced circuits, Heatcraft offers evapo­rator model EK. Interlaced face control utilizes four distributors and four suction con­nections.

6. See Figure 1 - Evaporator Coils.

2