5724452-UIM-A-0619
2
Johnson Controls Ducted Systems
SAFETY REQUIREMENTS
•
Failure to carefully read and follow all instructions in this manual
can result in air handler malfunction, death, personal injury and/or
property damage.
•
This air handler must be installed in accordance with all national
and local building/safety codes and requirements, local plumbing
or wastewater codes, and other applicable codes.
•
This air handler must be installed only in a location and position
specified in the “Unit Installation” section of this Instruction Man-
ual.
•
The air handler is not to be used for temporary heating of build-
ings or structures under construction.
•
Always install the air handler to operate within the air handler’s
intended maximum outlet air temperature.
•
The unit rating plate displays the air handler model number. The
unit dimensions for the supply air plenum are provided in Figure 5
and Table 1 of this Instruction Manual. The plenum must be
installed according to the instructions. The return air duct attach-
ment is shown in Figure 1.
•
Clearance from combustible material is provided under “Clear-
ances” in the “Unit Installation” section.
•
It is necessary to maintain clearances for servicing. Access must
be allowed for electric heaters and blower.
•
The unit rating plate and power supply must be verified to ensure
that the electrical characteristics match.
•
Air handler shall be installed so the electrical components are
protected from water.
•
Installing and servicing heating/cooling equipment can be haz-
ardous due to the electrical components. Only trained and
licensed personnel should install, repair, or service heating/cool-
ing equipment. Unlicensed service personnel can perform basic
maintenance functions such as cleaning and replacing the air fil-
ters. When working on heating/cooling equipment, the precau-
tions in the manuals and on the labels attached to the unit and
other safety precautions must be observed as applicable.
•
These instructions cover minimum requirements and conform to
existing national standards and safety codes. In some instances
these instructions exceed certain local codes and ordinances,
especially those who have not kept up with changing residential
and non-HUD modular home construction practices. These
instructions are required as a minimum for a safe installation.
INSPECTION
As soon as a unit is received, it must be inspected for possible damage
during transit. If damage is evident, the extent of the damage must be
noted on the carrier’s freight bill. A separate request for inspection by
the carrier’s agent must be made in writing. Also, before installation the
unit must be checked for screws or bolts that may have loosened in
transit. There are no shipping or spacer brackets which need to be
removed.
It must be verified that all accessories such as heat kits and coils are
available. Installation of these accessories or field conversion of the unit
must be done before setting the unit in place or connecting any wiring,
duct work, or piping.
SECTION III: UNIT INSTALLATION
UNIT SIZING
•
The size of the unit must be based on an acceptable heat loss or
gain calculation for the structure. The ACCA – Manual J or other
approved methods may be used.
•
Only connect the air handler to a duct system which has an exter-
nal static pressure within the allowable range.
•
Airflow must be within the minimum and maximum limits
approved for electric heat, indoor coils, and outdoor units.
•
When an air handler is installed so that supply ducts carry air cir-
culated by the air handler to areas outside the space containing
the air handler, the return air shall also be handled by duct(s)
sealed to the air handler casing and terminating in the space to
be cooled/heated.
•
Refer to the unit rating plate for the air handler model number,
and then see the dimensions page of this instruction for supply air
plenum dimensions. The plenum must be installed according to
the instructions.
•
The installer must check available supply power and verify that it
is within the normal operating voltage range for the unit. The
acceptable voltage range for these units is as follows:
WARNING
Improper installation, adjustment, alteration, or maintenance may cre-
ate a condition where the operation of the product could cause per-
sonal injury or property damage. Refer to this manual for assistance,
or for additional information, consult a qualified contractor, installer, or
service agency.
CAUTION
This product must be installed in strict compliance with the installation
instructions and any applicable local, state, and national codes
including, but not limited to building, electrical, and mechanical codes.
CAUTION
These air handlers should be transported and handled in an upright,
upflow position. Failure to do so may result in unit damage and per-
sonal injury. Configuration conversions should be done at site of
installation.
!
!
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FIGURE 1:
Return Air Duct Attachment
Entering Air Temperature Limits
Wet Bulb Temp.°F
Dry Bulb Temp. °F
Min.
Max.
Min.
Max.
57
72
65
95
Air Handler Voltage
Normal Operating
1
Voltage Range
1. Rated in accordance with ARI Standard 110, utilization range “A”.
208-230-1-60
187-253
S
IDE VIEW
RETURN AIR
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