035-18518-001-B-0703
Unitary Products Group
5
INSTALLATION
LIMITATIONS
These units must be installed in accordance with all
national and local safety codes. If no local codes apply,
installation must conform with the appropriate national
codes. See Table 2 for Unit Application Data. Units are
designed to meet National Safety Code Standards.
If components are to be added to a unit to meet local
codes, they are to be installed at the dealer's and/or
the customer's expense.
LOCATION
Use the following guidelines to select a suitable loca-
tion for these units.
1.
The condensing unit is designed for outdoor instal-
lation only. The condenser fans are the propeller
type and are not suitable for use with duct work.
2.
The condensing unit and the evaporator blower
should be installed as close together as possible
and with a minimum number of bends in the refrig-
erant piping. Refer to “REFRIGERANT PIPING” for
additional information.
3.
The condensing unit should not be installed where
normal operating sounds may be objectionable. On
either rooftop or ground level installations, rubber
padding can be applied between the base rails and
their supports to lessen any transmission of vibra-
tion.
4.
All units require certain clearances for proper oper-
ation and service. Refer to General Installation
Form 55.70-N1 for additional guidelines.
ROOF-TOP LOCATIONS
Be careful not to damage the roof. Consult the building
contractor or architect if the roof is bonded. Choose a
location with adequate structural strength to support
the unit.
The condensing unit must be mounted on solid level
supports. The supports can be channel iron beams or
wooden beams treated to reduce deterioration.
A minimum of two (2) beams are required to support
each unit. The beams should: (1) Be positioned per-
pendicular to the roof joists. (2) Extend beyond the
dimensions of the unit to distribute the load on the roof.
(3) Be capable of adequately supporting the entire unit
weight. Refer to Center of Gravity and Point Load Fig-
ures and Physical Data Table for load distribution and
weights.
These beams can usually be set directly on the roof.
Flashing is not required.
NOTE:
On bonded roofs, check for special installation
requirements.
GROUND LEVEL LOCATIONS
The units must be installed on a one-piece level con-
crete slab with a minimum thickness of 4 inches. The
length and width should be at least 6 inches greater
than the units overall base dimensions. Refer to
Figure 4.
TABLE 1: PHYSICAL DATA
Model
HF
Compressor
Condenser
Unit
Weight
Charge
Lbs.-Oz.
Refrigerant 22
Rating
(Tons)
Cap.
(Stages)
Fan
(Propeller)
Fan
Motor
*
Coil
†
Qty. Dia. (in.)
Nom.
CFM
Blades
Qty. HP RPM Rotation
‡
Face
Area (Ft.)
Finned
Length (in.)
Rows
High
Qty.
Pitch
(Deg.)
Ship. Oper. Holding Oper.
**
-07
7-1/2
1
2
24
7800
3
26
2
3/4 1110
CW
23.8
96
36
388
383
2-4
14.95
*.
These PSC motors are directly connected t the condenser fans and have inherent protection, ball bearings and a 48 frame.
†.
These condenser coils have 2 rows of 3/8” OD copper tubes ad 16 aluminum fins per inch.
‡.
When viewing the shaft end of the motor.
**.
Includes matched indoor blower unit but no piping. Refer to Table 6 for refrigerant line charge.
TABLE 2: UNIT APPLICATION DATA
MODEL
HA090
Voltage Variation
*-
Min. / Max
*.
Rated in accordance with ARI Standard 110, utilization
range “A”.
208/230-3-60
187 / 252
460-3-60
432 / 504
575-3-60
540 / 630
Ambient Air on
Condenser Coil
Min. / Max
Standard
45ºF / 125ºF
With Head Pressure
Control
0ºF / 125ºF
