ACCESSORY KIT INSTALLATION INSTRUCTIONSHot Water and Steam Coil Accessories

For Commercial Split System R-410A Evaporator Blower Units 25, 30, 40 and 50 Ton

11260-UAI-E-0211

GENERAL

The hot water coils can be drained and have two rows of 1/2" copper tubes. They also have twelve aluminum fins per inch, a casing finished to match the exterior of the basic unit, but no water control valve. The coils can slide out of their casings for easy field installation between the coil and the blower sections of the Figure 2 units.

All of the steam coils are the steam distributing type. They have one row of 1" copper tubes, each containing a 5/8" copper tube to distribute the steam evenly along its length. The coils have eight aluminum fins per inch, a casing that is finished to match the exterior of the basic unit, but no steam valve. The coils can slide out of their casings for easy field installation and are pitched in their casings to facilitate condensate drainage.

INSTALLATION1. Refer to Table 1 and Figure 2 and select the appropriate

illustration.

•Figure 2 is for horizontal and vertical units with the heating coil installed between the evaporator and blower sections.

Position the heating coil in (or on) the unit as shown.

2. Remove the end panels.

3. Remove and discard all shipping angles and/or screws and packing so coil is free to move within the casing.

4. Install the four nut retainers, position support angles and secure the sections together with screws as indicated.

5. Replace the end panels.

REMOVING COIL1. Disconnect the piping.

2. The heating coil may be removed from either side of the coil casing. Remove only the end panel and support angles on the side from which the coil is to be removed.

Table 1: HOT WATER AND STEAM COIL ACCESSORY REFERENCE INFORMATION

HOT WATER ACCESSORY

MODEL #

INSTALLATION FIGURE #

EVAPORATOR BLOWER UNITS #

1HW0406 2 NC300 NH-25 J25NC ND360 NJ-30 J30ND

1HW0407 2 ND480 NJ-40 J40ND ND600 NJ-50 J50ND

STEAMACCESSORY

MODEL #

INSTALLATION FIGURE #

EVAPORATOR BLOWER UNITS #

1NF0454 2 NC300 NH-25 J25NC ND360 NJ-30 J30ND

Figure 1: typical coil

1. Hot water coils may NOT be used for steam under any circumstances.

2. Steam coils have a “two way” pitch for both vertical and horizontal applications. The condensate connections must be positioned at the lowest point.

3. Steam pressure must be limited to 25 psig. If available steam pressure is greater than 25 psig, a pressure regulating valve must be installed and set for this maximum pressure.

Unitary Products Group

11260-UAI-E-0211

Table 2: HOT WATER COILS - PHYSICAL DATA (ALL DIMENSIONS IN INCHES)

Coil Model

Water Coil Dimensions

A B C D E F G H*

*. All NPTE connections are brass. All O.D. connections are copper.

J*

1HW0406†

†. Installs between the evaporator section and the blower section on Figure 2 units.

100-1/8 37-7/8 6 2-1/8 3-3/8 3-13/16 6-11/16 1-3/8 O. D. 1-3/8 O. D.

1HW0407† 103-1/8 45-1/4 6 2 3-3/8 3-15/16 6-7/16 1-5/8 O. D. 1-5/8 O. D.

Table 3: STEAM COILS - PHYSICAL DATA (ALL DIMENSIONS IN INCHES)

Coil Model

Steam Coil Dimensions

A B C D E F G*

*. All NPTE connections are brass.

H*

1NF0454†

†. Installs between the evaporator section and the blower section on Figure 2 units.

100-1/8 37-7/8 6 3-7/16 4-5/16 18-5/16 2 NPTE 1-1/2 NPTE

2 Unitary Products Group

11260-UAI-E-0211

Figure 2: coil installation in split-system indoor units

Johnson Controls Unitary Products 3

Subject to change without notice. Printed in U.S.A. 11260-UAI-E-0211Copyright © 3/9/11 by Unitary Products Group. All rights reserved. Supersedes: 11260-UAI-D-0710

Johnson Controls Unitary Products5005 York Drive

Norman, OK 73069