International comfort products R-410A User manual

513 01 3202 00 1/21/15
INSTALLATION INSTRUCTIONS
R−410A Single Package Air Conditioner
RAS036 −072
These instructions must be read and understood completely before attempting installation.
DANGER, WARNING, CAUTION, and
NOTE
The signal words DANGER, WARNING,
CAUTION, and NOTE are used to identify levels of
hazard seriousness. The signal word DANGER is
only used on product labels to signify an immediate
hazard. The signal words WARNING, CAUTION,
and NOTE will be used on product labels and
throughout this manual and other manuals that may
apply to the product.
DANGER −Immediate hazards which will result in
severe personal injury or death.
WARNING −Hazards or unsafe practices which
could result in severe personal injury or death.
CAUTION −Hazards or unsafe practices which
may result in minor personal injury or product or
property damage.
NOTE −Used to highlight suggestions which will
result in enhanced installation, reliability, or
operation.
Signal Words in Manuals
The signal word WARNING is used throughout this
manual in the following manner:
The signal word CAUTION is used throughout this
manual in the following manner:
Signal Words on Product Labeling
Signal words are used in combination with colors
and/or pictures on product labels.
WARNING
Safety Labeling and Signal Words
!
CAUTION
WARNING
!
!WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury and/or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF posi-
tion. There may be more than 1 disconnect switch.
Lock out and tag switch with a suitable warning label.
PERSONAL INJURY AND ENVIRONMENTAL
HAZARD
Failure to follow this warning could cause personal
injury or death.
Relieve pressure and recover all refrigerant before
system repair or final unit disposal.
Wear safety glasses and gloves when handling
refrigerants. Keep torches and other ignitions
sources away from refrigerants and oils.
!WARNING
!CAUTION
CUT HAZARD
Failure to follow this caution may result in personal in-
jury
Sheet metal parts may have sharp edges or burrs. Use
care and wear appropriate protective clothing and
gloves when handling parts.
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal
injury, death and/or equipment damage.
R−410A refrigerant systems operate at higher
pressures than standard R−22 systems. Do not
use R−22 service equipment or components on
R−410A refrigerant equipment.
!WARNING

513 01 3202 002
FIGURE 1
Base Unit Dimensions:
RAS036−72
RAS036
RAS048
RAS060 RAS072

513 01 3202 00 3
IMPORTANT −READ BEFORE INSTALLING
1. Read and become familiar with these installation
instructions before installing this unit.
2. Be sure the installation conforms to all applicable local
and national codes.
3. These instructions contain important information for the
proper maintenance and repair of this equipment. Retain
these instructions for future use.
CONTENTS
SAFETY CONSIDERATIONS 3........................
INSTALLATION 3....................................
Step 1 −Plan for Unit Location 3.....................
Step 2 −Plan for Sequence of Unit Installation 4........
Step 3 −Inspect unit 4..............................
Step 4 −Provide Unit Support 5......................
Step 5 −Field Fabricate Ductwork 7..................
Step 6 −Rig and Place Unit 8........................
Step 7 −Convert to Horizontal and Connect Ductwork 8.
Step 8 −Install Optional Outside Air Hood 8............
Step 9 −Install External Condensate Trap & Piping 10..
Step 10 −Make Electrical Connections 10.............
Step 11 −Adjust Factory−Installed Options 18..........
Step 12 −Install Accessories 18......................
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical
shock or other conditions which may cause personal injury
or property damage. Consult a qualified installer, service
agency, or your distributor or branch for information or
assistance. The qualified installer or agency must use
factory−authorized kits or accessories when modifying this
product. Refer to the individual instructions packaged with
the kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloths for brazing operations and
have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions attached to
the unit. Consult local building codes and appropriate
national electrical codes (in USA, ANSI/NFPA70, National
Electrical Code (NEC); in Canada, CSA C22.1) for special
requirements.
Recognize safety information. This is the safety−alert
symbol . When you see this symbol in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING,
CAUTION, and NOTE. These words are used with the
safety−alert symbol. DANGER identifies the most serious
hazards which will result in serious injury or death.
WARNING signifies a hazard which could result in serious
injury or death. CAUTION is used to identify unsafe practices
which may result in minor personal injury or product and
property damage. NOTE is used to highlight suggestions
which will result in enhanced installation, reliability, or
operation.
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 that may not have kept up with
changing residential construction practices. We require these
instructions as a minimum for a safe installation.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal injury
or death.
Before performing service or maintenance operations on
unit, always turn off main power switch to unit and install
lockout tag. Unit may have more than one power switch.
!WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal
injury, death and/or equipment damage.
R−410A refrigerant systems operate at higher
pressures than standard R−22 systems. Do not use
R−22 service equipment or components on R−410A
refrigerant equipment.
!WARNING
INSTALLATION
Jobsite Survey
Complete the following checks before installation.
1. Consult local building codes and the NEC (National
Electrical Code) ANSI/NFPA 70 for special installation
requirements.
2. Determine unit location (from project plans) or select
unit location.
3. Check for possible overhead obstructions which may
interfere with unit lifting or rigging.
Step 1 — Plan for Unit Location
Select a location for the unit and its support system (curb or
other) that provides for the minimum clearances required
for safety. This includes the clearance to combustible
surfaces, unit performance and service access below,
!

513 01 3202 004
around and above unit as specified in unit drawings. See
Fig. 2.
FIGURE 2 Service Clearance Dimensional Drawing
18” (457)
42" (1067)
18" (457)
42" (1067)
1
Required bottom condensate drain connection.
Otherwise, 36” (914mm) for condensate connection.
1
NOTE:Consider also the effect of adjacent units.
Unit may be installed directly on wood flooring or on Class
A, B, or C roof−covering material when roof curb is used.
Do not install unit in an indoor location. Do not locate air
inlets near exhaust vents or other sources of contaminated
air.
Although unit is weatherproof, avoid locations that permit
water from higher level runoff and overhangs to fall onto the
unit.
Select a unit mounting system that provides adequate
height to allow installation of condensate trap per
requirements. Refer to Step 9 — Install External Trap for
Condensate Drain – for required trap dimensions.
Roof mount —
Check building codes for weight distribution requirements.
Unit operating weight is shown in Table 1.
Table 1—Operating Weights
UNITS LB (KG)
Component RAS036 RAS048 RAS060 RAS072
Unit Size (Ton) 3 4 5 6
Base Unit 438 (199) 494 (224) 524 (238) 607 (275)
Economizer
Vertical 50 (23) 50 (23) 50 (23) 50 (23)
Horizontal 80 (36) 80 (36) 80 (36) 80 (36)
Cu Fins 25 (11) 43 (20) 56 (25) 73 (33)
Curb
14−in/356 mm 110 (50) 110 (50) 110 (50) 110 (50)
24−in/610 mm 145 (66) 145 (66) 145 (66) 145 (66)
Step 2 — Plan for Sequence of Unit Installation
The support method used for this unit will dictate different
sequences for the steps of unit installation. For example, on
curb−mounted units, some accessories must be installed
on the unit before the unit is placed on the curb. Review the
following for recommended sequences for installation
steps.
Curb−mounted installation —
Install roof curb
Install field−fabricated ductwork inside curb
Install accessory thru−base service connection package,
if used (affects curb and unit) (refer to accessory
installation instructions for details)
Prepare condensate drain connection to suit planned
condensate line routing (refer to Step 11 for details)
Rig and place unit
Install outdoor air hood
Install condensate line trap and piping
Make electrical connections
Install other accessories
Pad−mounted installation —
Prepare pad and unit supports
Check and tighten the bottom condensate drain
connection plug
Rig and place unit
Convert unit to side duct connection arrangement
Install field−fabricated ductwork at unit duct openings
Install outdoor air hood
Install condensate line trap and piping
Make electrical connections
Install other accessories
Frame−mounted installation —
Frame−mounted applications generally follow the
sequence for a curb installation. Adapt as required to suit
specific installation plan.
Step 3 — Inspect unit
Inspect unit for transportation damage. File any claim with
transportation agency.
Confirm before installation of unit that voltage, amperage
and circuit protection requirements listed on unit data plate
agree with power supply provided.

513 01 3202 00 5
Step 4 — Provide Unit Support
Roof Curb Mount —
Accessory roof curb details and dimensions are shown in
Fig. 3. Assemble and install accessory roof curb in
accordance with instructions shipped with the curb.
Curb should be level. This is necessary for unit drain to
function properly. Unit leveling tolerances are show in Fig.
4. Refer to Accessory Roof Curb Installation Instructions for
additional information as required.
Install insulation, cant strips, roofing felt, and counter
flashing as shown. Ductwork must be attached to curb and
not to the unit. The accessory thru−the−base power
connection package must be installed before the unit is set
on the roof curb. Power connections to the unit must be
field installed after the unit is installed on the roof curb.
If electric and control wiring is to be routed through the
basepan, attach the accessory thru−the−base service
connections to the basepan in accordance with the
accessory installation instructions.
NOTE:The gasketing of the unit to the roof curb is critical
for a watertight seal. Install gasket supplied with the roof
curb as shown in Fig. 3. Improperly applied gasket can also
result in air leaks and poor unit performance.
Slab Mount (Horizontal Units Only) —
Provide a level concrete slab that extends a minimum of 6
in. (150 mm) beyond unit cabinet. Install a gravel apron in
front of condenser coil air inlet to prevent grass and foliage
from obstructing airflow.
NOTE:Horizontal units may be installed on a roof curb if
required.
Alternate Unit Support (In Lieu of Curb or Slab Mount)
—
A non−combustible sleeper rail can be used in the unit curb
support area. If sleeper rails cannot be used, support the
long sides of the unit with a minimum of 3 equally spaced
4−in. x 4−in. (102 mm x 102 mm) pads on each side.

513 01 3202 006
FIGURE 3 Roof Curb Details
ROOF CURB
ACCESSORY A UNIT SIZE
CRRFCURB001A01 1-2
[356]
CRRFCURB002A01 2-0
[610]
NOTES:
1. Roof curb accessory is shipped disassembled.
2. Insulated panels.
3. Dimensions in [ ] are in millimeters.
4. Roof curb: galvanized steel.
5. Attach ductwork to curb (flanges of duct rest on
curb).
6. Service clearance: 4 ft on each side.
7. Direction of airflow.
8. Connector package CRBTMPWR001A01 is
for thru-the-curb type gas.
CRBTMPWR003A01 is for thru-the base
type gas connections.
CONNECTOR
PKG. ACCY. BC
DALT
DRAIN
HOLE
GAS POWER CONTROL ACCESSORY
POWER
CRBTMPWR001A01
1-9
11/16
[551]
1-4
[406]
13/4
[44.5]
3/4
[19] NPT 3/4[19] NPT
1/2
[12.7]
NPT
1/2
[12.7]
NPT
CRBTMPWR003A01
1/2
[12.7] NPT 3/4[19] NPT
580J
04-07
RAS036-072

FIGURE 5 Rigging Details
NOTES:
1. Dimensions in ( ) are in millimeters.
2. Hook rigging shackles through holes in base rail, as shown in
detail “A.” Holes in base rails are centered around the unit center
of gravity. Use wooden top skid when rigging to prevent rigging
straps from damaging unit.
3. Unit weights do not include economizer. See Table 1 for econo−
mizer weights.
513 01 3202 00 7
FIGURE 4 Unit Leveling Tolerances
MAXIMUM ALLOWABLE
A−BB−CA−C
0.5”(13) 1.0” (25) 1.0” (25)
Step 5 — Field Fabricate Ductwork
Cabinet return-air static pressure (a negative condition)
shall not exceed 0.35 in. wg (87 Pa) with economizer or
0.45 in. wg (112 Pa) without economizer.
For vertical ducted applications, secure all ducts to roof
curb and building structure. Do not connect ductwork to
unit.
Insulate and weatherproof all external ductwork, joints, and
roof openings with counter flashing and mastic in
accordance with applicable codes.
Ducts passing through unconditioned spaces must be
insulated and covered with a vapor barrier.
If a plenum return is used on a vertical unit, the return
should be ducted through the roof deck to comply with
applicable fire codes.
A minimum clearance is not required around ductwork.
Step 6 — Rig and Place Unit
Keep unit upright and do not drop. Spreader bars are not
required if top crating is left on unit. Rollers may be used to
move unit across a roof. Level by using unit frame as a
reference. See Table 1 and Fig. 5 for additional information.
Lifting holes are provided in base rails as shown in Fig. 5.
Refer to rigging instructions on unit.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
All panels must be in place when rigging. Unit is not
designed for handling by fork truck.
CAUTION
!
Before setting the unit onto the curb, recheck gasketing on
curb.
UNIT MAX WEIGHT DIMENSIONS
A B C
LB KG IN MM IN MM IN MM
RAS036 438 199 74.38 1888 38 965 33.38 848
RAS048 494 224 74.38 1888 38 965 33.38 848
RAS060 524 238 74.38 1888 38 965 33.38 848
RAS072 607 275 74.38 1888 38 965 41.38 1051

513 01 3202 008
Positioning on Curb —
Position unit on roof curb so that the following clearances
are maintained: 1/4 in. (6.4 mm) clearance between the
roof curb and the base rail inside the front and rear, 0.0 in.
clearance between the roof curb and the base rail inside on
the duct end of the unit. This will result in the distance
between the roof curb and the base rail inside on the
condenser end of the unit being approximately equal to Fig.
3, section C−C.
Although unit is weatherproof, guard against water from
higher level runoff and overhangs.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in
equipment damage.
All panels must be in place when rigging. Unit is
not designed for handling by fork truck.
CAUTION
!
After unit is in position, remove rigging skids and shipping
materials.
Step 7 — Convert to Horizontal and Connect
Ductwork (when required)
Unit is shipped in the vertical duct configuration. Unit
without factory−installed economizer or return air smoke
detector option may be field−converted to horizontal ducted
configuration. To convert to horizontal configuration,
remove screws from side duct opening covers and remove
covers. Using the same screws, install covers on vertical
duct openings with the insulation−side down. Seals around
duct openings must be tight. See Fig. 6.
FIGURE 6 HORIZONTAL CONVERSION PANELS
Field−supplied flanges should be attached to horizontal
duct openings and all ductwork should be secured to the
flanges. Insulate and weatherproof all external ductwork,
joints, and roof or building openings with counter flashing
and mastic in accordance with applicable codes.
Do not cover or obscure visibility to the unit’s informative
data plate when insulating horizontal ductwork.
Step 8 — Install Optional Outside Air Hood
The optional outdoor hood components are shipped in a
box located in the unit return air compartment behind the
outdoor−ar opening access panel (or economizer). Access
is through the filter access panel. See Fig. 7.
1. To remove the existing unit filter access panel, raise the
panel and swing the bottom outward. The panel is now
disengaged from the track and can be removed.
2. To remove the component box from its shipping
position, remove the screw holding the hood box
bracket to the top of the economizer. Slide the hood
box out of the unit. See Fig. 8.
FIGURE 7 Typical Access Panel Locations
FIGURE 8 Hood Box Removal
Motorized 2−Position Damper Hood (Optional) —
1. Assemble outdoor−air hood top and side plates as
shown in Fig. 9. Install seal strips on hood top and
sides. Put aside screen retainer and screws for later
assembly.
2. Fasten hood top and side plate assembly to unit with
screws provided. See Fig. 9.
3. Slide outdoor−air inlet screen into screen track on hood
side plates. While holding screen) in place, fasten
screen retainer to hood using screws provided.
4. Replace filter access panel. See Fig. 7.

513 01 3202 00 9
FIGURE 9 Outdoor Air Hood Details
SEAL STRIP
HOOD TOP
SEAL STRIP
HOOD
SIDE
SCREEN
RETAINER
HOOD SIDE
SCREEN
TRACKS
OUTDOOR AIR INLET SCREEN
SEAL STRIP
OUTDOOR-AIR HOOD – UNASSEMBLED
HOOD SIDES AND TOP ASSEMBLED
TRACKS FOR AIR
INLET SCREEN
HOOD
SIDE
HOOD TOP
Economizer Hood (Optional) —
NOTE:If the power exhaust accessory is to be installed on
the unit, the hood shipped with the unit will not be used and
must be discarded. Save the aluminum filter for use in the
power exhaust hood assembly.
1. The indoor coil access panel will be used as the top of
the hood. Remove the screws along the sides and
bottom of the indoor coil access panel. See Fig. 10.
FIGURE 10 Indoor Coil Access Panel Relocation
2. Swing out indoor coil access panel and insert the hood
sides under the panel (hood top). Use the screws
provided to attach the hood sides to the hood top. Use
screws provided to attach the hood sides to the unit.
See Fig. 11.
3. Remove the shipping tape holding the economizer
barometric relief damper in place.
4. Insert the hood divider between the hood sides. See
Fig. 11 and 12. Secure hood divider with 2 screws on
each hood side. The hood divider is also used as the
bottom filter rack for the aluminum filter.
5. Open the filter clips which are located underneath the
hood top. Insert the aluminum filter into the bottom filter
rack (hood divider). Push the filter into position past the
open filter clips. Close the filter clips to lock the filter
into place. See Fig. 12.
FIGURE 11 Economizer Hood Construction
FIGURE 12 Economizer Filter Installation
6. Caulk the ends of the joint between the unit top panel
and the hood top.
7. Replace the filter access panel.

513 01 3202 0010
Step 9 — Install External Condensate Trap and
Line
The unit has one 3/4-in. condensate drain connection on the
end of the condensate pan and an alternate connection on
the bottom. Unit airflow configuration does not determine
which drain connection to use. Either drain connection can
be used with vertical or horizontal applications.
When using the standard side drain connection, ensure the
red plug in the alternate bottom connection is tight. Do this
before setting the unit in place. The red drain pan can be
tightened with a 1/2−in. square socket drive extension.
To use the bottom drain connection for a roof curb
installation, relocate the factory-installed red plug from the
bottom connection to the side connection. The center drain
plug looks like a star connection, however it can be
removed with a 1/2−in. square socket drive extension. See
Fig. 12. The piping for the condensate drain and external
trap can be completed after the unit is in place. See Fig. 13.
FIGURE 13 Condensate Drain Pan (Side View)
DRAIN
(FACTORY-INSTALLED)
PLUG
CONDENSATE PAN (SIDE VIEW)
STANDARD
SIDE DRAIN
ALTERNATE
BOTTOM DRAIN
FIGURE 14 Condensate Drain Piping Details
NOTE: Trap should be deep enough to offset maximum unit static
difference. A 4” (102) trap is recommended.
MINIMUM PITCH
1” (25mm) PER
10’ (3m) OF LINE BASE RAIL
OPEN
VENT
TO ROOF
DRAIN
DRAIN PLUG
ROOF
CURB
SEE NOTE
2˝(51) MIN
All units must have an external trap for condensate
drainage. Install a trap at least 4-in. (102 mm) deep and
protect against freeze-up. If drain line is installed
downstream from the external trap, pitch the line away from
the unit at 1-in. per 10 ft (25 mm in 3 m) of run. Do not use
a pipe size smaller than the unit connection (3/4-in.).
Step 10 — Make Electrical Connections
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Do not use gas piping as an electrical ground. Unit
cabinet must have an uninterrupted, unbroken electrical
ground to minimize the possibility of personal injury if an
electrical fault should occur. This ground may consist of
electrical wire connected to unit ground lug in control
compartment, or conduit approved for electrical ground
when installed in accordance with NEC (National
Electrical Code); ANSI/NFPA 70, latest edition (in
Canada, Canadian Electrical Code CSA [Canadian
Standards Association] C22.1), and local electrical
codes.
!WARNING
Field Power Supply —
All units except 208/230-v units are factory wired for the
voltage shown on the nameplate. If the 208/230-v unit is to
be connected to a 208-v power supply, the control
transformer must be rewired by moving the black wire with
the 1/4-in. female spade connector from the 230−v
connection and moving it to the 200-v 1/4-in. male terminal
on the primary side of the transformer. Refer to unit label
diagram for additional information. Field power wires will be
connected line−side pressure lugs on the power terminal
block or at factory−installed option non−fused disconnect.
Field power wires are connected to the unit at line−side
pressure lugs on compressor contactor C and indoor fan
contactor IFC (see wiring diagram label for control box
component arrangement) or at factory−installed option
non−fused disconnect switch. Max wire size is #2 AWG
(copper only).
NOTE:TEST LEADS −Unit may be equipped with short
leads (pigtails) on the field line connection points on
contactor C or optional disconnect switch. These leads are
for factory run−test purposes only; remove and discard
before connecting field power wires to unit connection
points. Make field power connections directly to line
connection pressure lugs only.
Units Without Factory−Installed Disconnect —
When installing units, provide a disconnect switch per NEC
(National Electrical Code) of adequate size. Disconnect
sizing data is provided on the unit informative plate. Locate
on unit cabinet or within sight of the unit per national or
local codes. Do not cover unit informative plate if mounting
the disconnect on the unit cabinet.
Units with Factory−Installed Disconnect —
The factory−installed option disconnect switch is located in
a weatherproof enclosure located under the main control
box. The manual switch handle is accessible through an
opening in the access panel.

513 01 3202 00 11
All units −
All field wiring must comply with NEC and all local codes.
Size wire based on MCA (Minimum Circuit Amps) on the
unit informative plate. See Fig. 15 for power wiring
connections to the unit power terminal block and equipment
ground. Maximum wire size is #2 ga AWG per pole.
Provide a ground−fault and short−circuit over−current
protection device (fuse or breaker) per NEC Article 440 (or
local codes). Refer to unit informative data plate for MOCP
(Maximum Over−current Protection) device size.
All field wiring must comply with the NEC and local
requirements.
Optional Thru−Base Connections —
This accessory (field installed) service connection kit
consists of a 1/2−in NPT gas adapter fitting (brass), a
1/2−in electrical bulkhead connector and a 3/4−in electrical
bulkhead connector, all installed in the embossed (raised)
section of the unit basepan in the condenser section. The
3/4−in bulkhead connector enables the low−voltage control
wires to pass through the basepan. The 1/2−in electrical
bulkhead connector allows the high−voltage power wires to
pass through the basepan. See Fig. 15.
Note: this must be installed prior to mounting unit on
roof curb.
FIGURE 15 Fittings
Check tightness of connector lock nuts before connecting
electrical conduits.
Field−supplied and field−installed liquid tight conduit
connectors and conduit may be attached to the connectors
on the basepan. Pull correctly rated high voltage and low
voltage through appropriate conduits. Connect the power
conduit to the internal disconnect (if unit is so equipped) or
to the external disconnect (through unit side panel). A hole
must be field cut in the main control box bottom on the left
side so the 24−v control connections can be made.
Connect the control power conduit to the unit control box at
this hole.
Install field wiring as follows:
Units without Thru−Base Connections —
1. Install power wiring conduit through side panel
openings. Install conduit between disconnect and
control box.
2. Install power lines to terminal connections as shown in
Fig. 16.
FIGURE 16 Power Wiring Connections
Disconnect
per
NEC
Disconnect
per
NEC
208/230-1-60
11 13 11 13 13
L1 L2 L3
TB
CC IFC or
(1-ph
IFM)
208/230-3-60
460-3-60
375-3-60
575-3-60
Units Without Disconnect Option
Units With Disconnect Option
2
4
6
1
3
5
L1
L2
L3
Optional
Disconnect
Switch
Disconnect factory test leads; discard.
Factory
Wiring
Voltage to compressor terminals during operation must be
within voltage range indicated on unit nameplate. See Table
2. On 3−phase units, voltages between phases must be
balanced within 2% and the current within 10%. Use the
formula shown in the legend for Table 2, Note 2 to
determine the percent of voltage imbalance. Operation on
improper line voltage or excessive phase imbalance
constitutes abuse and may cause damage to electrical
components. Such operation would invalidate any
applicable ICP warranty.
Field Control Wiring —
The RAS unit requires an external temperature control
device. This device typically applied with a commercial
thermostat (field−supplied) with both occupied and
unoccupied setpoints at a minimum.
Thermostat —
Install an approved accessory commercial thermostat
according to installation instructions included with the
accessory. For complete economizer function, select a
two−stage cooling thermostat. Locate the thermostat
accessory on a solid wall in the conditioned space to sense
average temperature in accordance with the thermostat
installation instructions.
If the thermostat contains a logic circuit requiring 24−v
power, use a thermostat cable or equivalent single leads of

513 01 3202 0012
different colors with minimum of seven leads. If the
thermostat does not require a 24−v source (no “C”
connection required), use a thermostat cable or equivalent
with minimum of six leads. Check the thermostat
installation instructions for additional features which might
require additional conductors in the cable.
For wire runs up to 50 ft. (15 m), use no. 18 AWG
(American Wire Gage) insulated wire (35_C minimum). For
50 to 75 ft. (15 to 23 m), use no. 16 AWG insulated wire
(35_C minimum). For over 75 ft. (23 m), use no. 14 AWG
insulated wire (35_C minimum). All wire sizes larger than
no. 18 AWG cannot be directly connected to the thermostat
and will require a junction box and splice at the thermostat.
Unit without thru−base connection kit —
Pass the thermostat control wires through the hole provided
in the corner post; then feed the wires through the raceway
built into the corner post to the control box. Pull the wires
over to the terminal strip on the upper−left corner of the
Controls Connection Board. See Fig. 18.
NOTE:If thru−the−bottom connections accessory is used,
refer to the accessory installation instructions for
information on routing power and control wiring.
FIGURE 17 Typical Low Voltage Control Connections
X
C
G
W2
R
C
W2
G
W1
O/B/Y2 Y2
W1
R
Y1 Y1
Typical
Thermostat
Corrections
Unit
Terminal
Board
T
H
E
R
M
O
S
T
A
T
(Note 1) (Note 2)
Note 1: Typical multi-function marking.Follow manufacturer's configuration
instructions to select Y2.
Note 2: Y2 to Y2 connection required on single-stage cooling units when
integrated economizer function is desired.
Field Wiring
FIGURE 18 Field Control Wiring Raceway
RACEWAY
HOLE IN END PANEL (HIDDEN)
Heat Anticipator Settings —
Set heat anticipator settings at 0.14 amp for the first stage
and 0.14 amp for second−stage heating, when available.

513 01 3202 00 13
Table 2 −Unit Wire/Fuse or HACR Breaker Sizing Data
UNIT
NO M. V-Ph-HZ
IFM
TYPE
ELEC. HTR NO C.O. or UNPWR C.O.
CRHEATER***A00 Nom (kW) FLA
NO P.E. w/ P.E. (pwrd fr/unit)
MCA
MAX FUSE
or HACR
BRKR
DISC. SIZE
MCA
MAX FUSE
or HACR
BRKR
DISC. SIZE
FLA LRA FLA LRA
RAS036
208/230-1-60
STD
NONE - - 28 40 26 95 30 45 29 97
101A 3.3/4.4 15.9/18.3 28/29 40/40 26/27 95/95 30/32 45/45 29/29 97/97
102A 4.9/6.5 23.5/27.1 36/40 40/45 33/37 95/95 38/43 45/45 35/39 97/97
103B 6.5/8.7 31.4/36.3 46/52 50/60 42/47 95/95 48/54 50/60 44/50 97/97
104B 7.9/10.5 37.9/43.8 54/61 60/70 49/56 95/95 56/64 60/70 51/58 97/97
102A+102A 9.8/13.0 46.9/54.2 65/74 70/80 60/68 95/95 68/77 70/80 62/70 97/97
MED
NONE - - 28 40 26 95 30 45 29 97
101A 3.3/4.4 15.9/18.3 28/29 40/40 26/27 95/95 30/32 45/45 29/29 97/97
102A 4.9/6.5 23.5/27.1 36/40 40/45 33/37 95/95 38/43 45/45 35/39 97/97
103B 6.5/8.7 31.4/36.3 46/52 50/60 42/47 95/95 48/54 50/60 44/50 97/97
104B 7.9/10.5 37.9/43.8 54/61 60/70 49/56 95/95 56/64 60/70 51/58 97/97
102A+102A 9.8/13.0 46.9/54.2 65/74 70/80 60/68 95/95 68/77 70/80 62/70 97/97
208/230-3-60208/230-3-60
STD
NONE - - 20 30 20 96 22 30 22 98
101A 3.3/4.4 9.2/10.6 20/20 30/30 20/20 96/96 22/23 30/30 22/22 98/98
102A 4.9/6.5 13.6/15.6 24/26 30/30 22/24 96/96 26/29 30/30 24/26 98/98
103B 6.5/8.7 18.1/20.9 30/33 30/35 27/30 96/96 32/35 35/40 29/32 98/98
104B 7.9/10.5 21.9/25.3 34/39 35/40 31/35 96/96 37/41 40/45 33/37 98/98
105A 12.0/16.0 33.4/38.5 49/55 50/60 44/50 96/96 51/57 60/60 47/52 98/98
MED
NONE - - 20 30 20 96 22 30 22 98
101A 3.3/4.4 9.2/10.6 20/20 30/30 20/20 96/96 22/23 30/30 22/22 98/98
102A 4.9/6.5 13.6/15.6 24/26 30/30 22/24 96/96 26/29 30/30 24/26 98/98
103B 6.5/8.7 18.1/20.9 30/33 30/35 27/30 96/96 32/35 35/40 29/32 98/98
104B 7.9/10.5 21.9/25.3 34/39 35/40 31/35 96/96 37/41 40/45 33/37 98/98
105A 12.0/16.0 33.4/38.5 49/55 50/60 44/50 96/96 51/57 60/60 47/52 98/98
HIGH
NONE - - 22/22 30/30 22/21 134 24/24 30/30 24/24 136
101A 3.3/4.4 9.2/10.6 22/22 30/30 22/21 134/134 24/24 30/30 24/24 136/136
102A 4.9/6.5 13.6/15.6 26/28 30/30 24/26 134/134 28/31 30/35 26/28 136/136
103B 6.5/8.7 18.1/20.9 32/35 35/35 29/32 134/134 34/37 35/40 31/34 136/136
104B 7.9/10.5 21.9/25.3 36/40 40/40 33/37 134/134 39/43 40/45 35/39 136/136
105A 12.0/16.0 33.4/38.5 51/57 60/60 46/52 134/134 53/59 60/60 49/54 136/136
460-3-60
STD
NONE - - 11 15 11 49 12 15 12 50
106A 6.0 7.2 13 15 11 49 14 15 12 50
107A 8.8 10.6 17 20 15 49 18 20 16 50
108A 11.5 13.8 21 25 19 49 22 25 20 50
109A 14.0 16.8 25 25 22 49 26 30 23 50
MED
NONE - - 11 15 11 49 12 15 12 50
106A 6.0 7.2 13 15 11 49 14 15 12 50
107A 8.8 10.6 17 20 15 49 18 20 16 50
108A 11.5 13.8 21 25 19 49 22 25 20 50
109A 14.0 16.8 25 25 22 49 26 30 23 50
HIGH
NONE - - 12 15 12 68 13 15 13 69
106A 6.0 7.2 14 15 12 68 15 15 13 69
107A 8.8 10.6 18 20 16 68 19 20 17 69
108A 11.5 13.8 22 25 20 68 23 25 21 69
109A 14.0 16.8 26 30 23 68 27 30 24 69
575-3-60
STD NONE - - 8 15 8 46 10 15 10 48
MED NONE - - 8 15 8 46 10 15 10 48
HIGH NONE - - 8 15 7 50 10 15 10 52
See legend following tables.

513 01 3202 0014
Table 2 −Unit Wire/Fuse or HACR Breaker Sizing Data (cont)
UNIT
NO M. V-Ph-HZ
IFM
TYPE
ELEC. HTR NO C.O. or UNPWR C.O.
CRHEATER***A00 Nom
(kW) FLA
NO P.E. w/ P.E. (pwrd fr/unit)
MCA
MAX FUSE
or HACR
BRKR
DISC. SIZE
MCA
MAX FUSE
or HACR
BRKR
DISC. SIZE
FLA LRA FLA LRA
RAS048
208/230-1-60
STD
NONE - - 34 50 32 133 36 50 35 135
101A 3.3/4.4 15.9/18.3 34/34 50/50 32/32 133/133 36/36 50/50 35/35 135/135
103B 6.5/8.7 31.4/36.3 46/52 50/60 42/47 133/133 48/54 50/60 44/50 135/135
102A+102A 9.8/13.0 46.9/54.2 65/74 70/80 60/68 133/133 68/77 70/80 62/70 135/135
103B+103B 13.1/17.4 62.8/72.5 85/97 90/100 78/89 133/133 87/100 90/100 80/91 135/135
104B+104B 15.8/21.0 75.8/87.5 101/116 110/125 93/106 133/133 104/118 110/125 95/108 135/135
MED
NONE - - 34 50 32 133 36 50 35 135
101A 3.3/4.4 15.9/18.3 34/34 50/50 32/32 133/133 36/36 50/50 35/35 135/135
103B 6.5/8.7 31.4/36.3 46/52 50/60 42/47 133/133 48/54 50/60 44/50 135/135
102A+102A 9.8/13.0 46.9/54.2 65/74 70/80 60/68 133/133 68/77 70/80 62/70 135/135
103B+103B 13.1/17.4 62.8/72.5 85/97 90/100 78/89 133/133 87/100 90/100 80/91 135/135
208/230-3-60
STD
NONE - - 24 30 23 106 26 30 26 108
102A 4.9/6.5 13.6/15.6 24/26 30/30 23/24 106/106 26/29 30/30 26/26 108/108
103B 6.5/8.7 18.1/20.9 30/33 30/35 27/30 106/106 32/35 35/40 29/32 108/108
105A 12.0/16.0 33.4/38.5 49/55 50/60 44/50 106/106 51/57 60/60 47/52 108/108
104B+104B 15.8/21.0 43.8/50.5 62/70 70/70 56/64 106/106 64/72 70/80 59/66 108/108
MED
NONE - - 24 30 23 106 26 30 26 108
102A 4.9/6.5 13.6/15.6 24/26 30/30 23/24 106/106 26/29 30/30 26/26 108/108
103B 6.5/8.7 18.1/20.9 30/33 30/35 27/30 106/106 32/35 35/40 29/32 108/108
105A 12.0/16.0 33.4/38.5 49/55 50/60 44/50 106/106 51/57 60/60 47/52 108/108
104B+104B 15.8/21.0 43.8/50.5 62/70 70/70 56/64 106/106 64/72 70/80 59/66 108/108
HIGH
NONE - - 26/26 30/30 25/25 144 28/28 40/40 28/27 146
102A 4.9/6.5 13.6/15.6 26/28 30/30 25/26 144/144 28/31 40/40 28/28 146/146
103B 6.5/8.7 18.1/20.9 32/35 35/35 29/32 144/144 34/37 40/40 31/34 146/146
105A 12.0/16.0 33.4/38.5 51/57 60/60 46/52 144/144 53/59 60/60 49/54 146/146
104B+104B 15.8/21.0 43.8/50.5 64/72 70/80 58/66 144/144 66/74 70/80 60/68 146/146
460-3-60
STD
NONE - - 12 15 11 52 13 15 12 53
106A 6.0 7.2 13 15 11 52 14 15 12 53
108A 11.5 13.8 21 25 19 52 22 25 20 53
109A 14.0 16.8 25 25 22 52 26 30 23 53
108A+108A 23.0 27.7 38 40 35 52 40 40 36 53
MED
NONE - - 12 15 11 52 13 15 12 53
106A 6.0 7.2 13 15 11 52 14 15 12 53
108A 11.5 13.8 21 25 19 52 22 25 20 53
109A 14.0 16.8 25 25 22 52 26 30 23 53
108A+108A 23.0 27.7 38 40 35 52 40 40 36 53
HIGH
NONE - - 12 15 12 71 13 15 13 72
106A 6.0 7.2 14 15 12 71 15 15 13 72
108A 11.5 13.8 22 25 20 71 23 25 21 72
109A 14.0 16.8 26 30 23 71 27 30 24 72
108A+108A 23.0 27.7 39 40 36 71 41 45 37 72
575-3-60
STD NONE - - 9 15 9 42 11 15 11 44
MED NONE - - 9 15 9 42 11 15 11 44
HIGH NONE - - 9 15 9 46 11 15 11 48
See legend following tables.

513 01 3202 00 15
Table 2 −Unit Wire/Fuse or HACR Breaker Sizing Data (cont)
UNIT
NO M. V-Ph-HZ
IFM
TYPE
ELEC. HTR NO C.O. or UNPWR C.O.
CRHEATER***A00 Nom
(kW) FLA
NO P.E. w/ P.E. (pwrd fr/unit)
MCA
MAX FUSE
or HACR
BRKR
DISC. SIZE
MCA
MAX FUSE
or HACR
BRKR
DISC. SIZE
FLA LRA FLA LRA
RAS060
208/230-1-60
STD
NONE - - 40 60 37 150 42 60 40 152
102A 4.9/6.5 23.5/27.1 40/40 60/60 37/37 150/150 42/43 60/60 40/40 152/152
103B 6.5/8.7 31.4/36.3 46/52 60/60 42/47 150/150 48/54 60/60 44/50 152/152
102A+102A 9.8/13.0 46.9/54.2 65/74 70/80 60/68 150/150 68/77 70/80 62/70 152/152
103B+103B 13.1/17.4 62.8/72.5 85/97 90/100 78/89 150/150 87/100 90/100 80/91 152/152
104B+104B 15.8/21.0 75.8/87.5 101/116 110/125 93/106 150/150 104/118 110/125 95/108 152/152
MED
NONE - - 42 60 40 175 44 60 42 177
102A 4.9/6.5 23.5/27.1 42/43 60/60 40/40 175/175 44/45 60/60 42/42 177/177
103B 6.5/8.7 31.4/36.3 48/55 60/60 44/50 175/175 51/57 60/60 46/52 177/177
102A+102A 9.8/13.0 46.9/54.2 68/77 70/80 62/70 175/175 70/79 70/80 64/73 177/177
103B+103B 13.1/17.4 62.8/72.5 88/100 90/100 80/91 175/175 90/102 90/110 82/94 177/177
104B+104B 15.8/21.0 75.8/87.5 104/119 110/125 95/109 175/175 106/121 110/125 97/111 177/177
208/230-3-60
STD
NONE - - 27 40 26 133 29 40 28 135
102A 4.9/6.5 13.6/15.6 27/27 40/40 26/26 133/133 29/29 40/40 28/28 135/135
104B 7.9/10.5 21.9/25.3 34/39 40/40 31/35 133/133 37/41 40/45 33/37 135/135
105A 12.0/16.0 33.4/38.5 49/55 50/60 44/50 133/133 51/57 60/60 47/52 135/135
104B+104B 15.8/21.0 43.8/50.5 62/70 70/70 56/64 133/133 64/72 70/80 59/66 135/135
104B+105A 19.9/26.5 55.2/63.8 76/87 80/90 69/79 133/133 78/89 80/90 72/82 135/135
MED
NONE - - 28/28 40/40 28/27 171 30/30 45/45 30/30 173
102A 4.9/6.5 13.6/15.6 28/28 40/40 28/27 171/171 30/31 45/45 30/30 173/173
104B 7.9/10.5 21.9/25.3 36/40 40/40 33/37 171/171 39/43 45/45 35/39 173/173
105A 12.0/16.0 33.4/38.5 51/57 60/60 46/52 171/171 53/59 60/60 49/54 173/173
104B+104B 15.8/21.0 43.8/50.5 64/72 70/80 58/66 171/171 66/74 70/80 60/68 173/173
104B+105A 19.9/26.5 55.2/63.8 78/89 80/90 71/81 171/171 80/91 90/100 74/83 173/173
HIGH
NONE - - 30/30 45/40 29/29 186 32/32 45/45 32/31 188
102A 4.9/6.5 13.6/15.6 30/30 45/40 29/29 186/186 32/33 45/45 32/31 188/188
104B 7.9/10.5 21.9/25.3 38/42 45/45 35/39 186/186 41/45 45/45 37/41 188/188
105A 12.0/16.0 33.4/38.5 53/59 60/60 48/54 186/186 55/61 60/70 50/56 188/188
104B+104B 15.8/21.0 43.8/50.5 66/74 70/80 60/68 186/186 68/76 70/80 62/70 188/188
104B+105A 19.9/26.5 55.2/63.8 80/91 80/100 73/83 186/186 82/93 90/100 75/85 188/188
460-3-60
STD
NONE - - 13 20 13 63 14 20 14 64
106A 6.0 7.2 13 20 13 63 14 20 14 64
108A 11.5 13.8 21 25 19 63 22 25 20 64
109A 14.0 16.8 25 25 22 63 26 30 23 64
108A+108A 23.0 27.7 38 40 35 63 40 40 36 64
108A+109A 25.5 30.7 42 45 38 63 43 45 39 64
MED
NONE - - 14 20 14 82 15 20 15 83
106A 6.0 7.2 14 20 14 82 15 20 15 83
108A 11.5 13.8 22 25 20 82 23 25 21 83
109A 14.0 16.8 26 30 23 82 27 30 24 83
108A+108A 23.0 27.7 39 40 36 82 41 45 37 83
108A+109A 25.5 30.7 43 45 39 82 44 45 40 83
HIGH
NONE - - 15 20 15 90 16 20 16 91
106A 6.0 7.2 15 20 15 90 16 20 16 91
108A 11.5 13.8 23 25 21 90 24 25 22 91
109A 14.0 16.8 27 30 24 90 28 30 25 91
108A+108A 23.0 27.7 40 40 37 90 42 45 38 91
108A+109A 25.5 30.7 44 45 40 90 45 45 41 91
575-3-60
STD NONE - - 11 15 10 48 13 15 12 50
MED NONE - - 10 15 10 52 12 15 12 54
HIGH NONE - - 11 15 11 63 13 15 13 65
See legend following tables.

513 01 3202 0016
Table 2 −Unit Wire/Fuse or HACR Breaker Sizing Data (cont)
UNIT
NO M. V-Ph-HZ
IFM
TYPE
ELEC. HTR NO C.O. or UNPWR C.O.
CRHEATER***A00 Nom
(kW) FLA
NO P.E. w/ P.E. (pwrd fr/unit)
MCA
MAX FUSE
or HACR
BRKR
DISC. SIZE
MCA
MAX FUSE
or HACR
BRKR
DISC. SIZE
FLA LRA FLA LRA
RAS072 - Units produced on or after 02/09/2015
208/230-3-60
STD
NONE - - 33/33 50/50 32/32 197 35/35 50/50 34/34 199
102A 4.9/6.5 13.6/15.6 33/33 50/50 32/32 197/197 35/35 50/50 34/34 199/199
104B 7.9/10.5 21.9/25.3 36/40 50/50 33/37 197/197 39/43 50/50 35/39 199/199
105A 12.0/16.0 33.4/38.5 51/57 60/60 46/52 197/197 53/59 60/60 49/54 199/199
104B+104B 15.8/21.0 43.8/50.5 64/72 70/80 58/66 197/197 66/74 70/80 60/68 199/199
104B+105A 19.9/26.5 55.2/63.8 78/89 80/90 71/81 197/197 80/91 90/100 74/83 199/199
MED
NONE - - 35/35 50/50 34/34 212 37/37 50/50 36/36 214
102A 4.9/6.5 13.6/15.6 35/35 50/50 34/34 212/212 37/37 50/50 36/36 214/214
104B 7.9/10.5 21.9/25.3 38/42 50/50 35/39 212/212 41/45 50/50 37/41 214/214
105A 12.0/16.0 33.4/38.5 53/59 60/60 48/54 212/212 55/61 60/70 50/56 214/214
104B+104B 15.8/21.0 43.8/50.5 66/74 70/80 60/68 212/212 68/76 70/80 62/70 214/214
104B+105A 19.9/26.5 55.2/63.8 80/91 80/100 73/83 212/212 82/93 90/100 75/85 214/214
HIGH
NONE - - 37 50 36 226 39 50 39 228
102A 4.9/6.5 13.6/15.6 37/37 50/50 36/36 226/226 39/39 50/50 39/39 228/228
104B 7.9/10.5 21.9/25.3 41/45 50/50 37/41 226/226 43/48 50/50 40/43 228/228
105A 12.0/16.0 33.4/38.5 55/62 60/70 51/56 226/226 58/64 60/70 53/59 228/228
104B+104B 15.8/21.0 43.8/50.5 68/77 70/80 63/70 226/226 71/79 80/80 65/72 228/228
104B+105A 19.9/26.5 55.2/63.8 83/93 90/100 76/86 226/226 85/96 90/100 78/88 228/228
460-3-60
STD
NONE - - 15 20 14 96 16 20 15 97
106A 6.0 7.2 15 20 14 96 16 20 15 97
108A 11.5 13.8 22 25 20 96 23 25 21 97
109A 14.0 16.8 26 30 23 96 27 30 24 97
108A+108A 23.0 27.7 39 40 36 96 41 45 37 97
108A+109A 25.5 30.7 43 45 39 96 44 45 40 97
MED
NONE - - 16 20 15 104 17 20 16 105
106A 6.0 7.2 16 20 15 104 17 20 16 105
108A 11.5 13.8 23 25 21 104 24 25 22 105
109A 14.0 16.8 27 30 24 104 28 30 25 105
108A+108A 23.0 27.7 40 40 37 104 42 45 38 105
108A+109A 25.5 30.7 44 45 40 104 45 45 41 105
HIGH
NONE - - 17 20 16 111 18 25 18 112
106A 6.0 7.2 17 20 16 111 18 25 18 112
108A 11.5 13.8 24 25 22 111 26 30 23 112
109A 14.0 16.8 28 30 25 111 29 30 27 112
108A+108A 23.0 27.7 42 45 38 111 43 45 39 112
108A+109A 25.5 30.7 45 50 41 111 47 50 43 112
575-3-60
STD NONE - - 11 15 11 68 13 15 13 70
MED NONE - - 12 15 12 79 14 20 14 81
HIGH NONE - - 12 15 12 79 14 20 14 81
See legend following tables.

513 01 3202 00 17
Table 2 −Unit Wire/Fuse or HACR Breaker Sizing Data (cont)
UNIT
NO M. V-Ph-HZ
IFM
TYPE
ELEC. HTR NO C.O. or UNPWR C.O.
CRHEATER***A00 Nom
(kW) FLA
NO P.E. w/ P.E. (pwrd fr/unit)
MCA
MAX FUSE
or HACR
BRKR
DISC. SIZE
MCA
MAX FUSE
or HACR
BRKR
DISC. SIZE
FLA LRA FLA LRA
RAS072 - Units produced on or prior to 02/08/2015
208/230-3-60
STD
NONE - - 33/32 50/50 32/31 184 35/34 50/50 34/33 186
102A 4.9/6.5 13.6/15.6 33/32 50/50 32/31 184/184 35/34 50/50 34/33 186/186
104B 7.9/10.5 21.9/25.3 36/40 50/50 33/37 184/184 39/43 50/50 35/39 186/186
105A 12.0/16.0 33.4/38.5 51/57 60/60 46/52 184/184 53/59 60/60 49/54 186/186
104B+104B 15.8/21.0 43.8/50.5 64/72 70/80 58/66 184/184 66/74 70/80 60/68 186/186
104B+105A 19.9/26.5 55.2/63.8 78/89 80/90 71/81 184/184 80/91 90/100 74/83 186/186
MED
NONE - - 34/34 50/50 33/33 199 36/36 50/50 35/35 201
102A 4.9/6.5 13.6/15.6 34/34 50/50 33/33 199/199 36/36 50/50 35/35 201/201
104B 7.9/10.5 21.9/25.3 38/42 50/50 35/39 199/199 41/45 50/50 37/41 201/201
105A 12.0/16.0 33.4/38.5 53/59 60/60 48/54 199/199 55/61 60/70 50/56 201/201
104B+104B 15.8/21.0 43.8/50.5 66/74 70/80 60/68 199/199 68/76 70/80 62/70 201/201
104B+105A 19.9/26.5 55.2/63.8 80/91 80/100 73/83 199/199 82/93 90/100 75/85 201/201
HIGH
NONE - - 36 50 36 213 38 50 38 215
102A 4.9/6.5 13.6/15.6 36/36 50/50 36/36 213/213 38/38 50/50 38/38 215/215
104B 7.9/10.5 21.9/25.3 41/45 50/50 37/41 213/213 43/48 50/50 40/43 215/215
105A 12.0/16.0 33.4/38.5 55/62 60/70 51/56 213/213 58/64 60/70 53/59 215/215
104B+104B 15.8/21.0 43.8/50.5 68/77 70/80 63/70 213/213 71/79 80/80 65/72 215/215
104B+105A 19.9/26.5 55.2/63.8 83/93 90/100 76/86 213/213 85/96 90/100 78/88 215/215
460-3-60
STD
NONE - - 17 25 16 92 18 25 17 93
106A 6.0 7.2 17 25 16 92 18 25 17 93
108A 11.5 13.8 22 25 20 92 23 25 21 93
109A 14.0 16.8 26 30 23 92 27 30 24 93
108A+108A 23.0 27.7 39 40 36 92 41 45 37 93
108A+109A 25.5 30.7 43 45 39 92 44 45 40 93
MED
NONE - - 18 25 17 100 19 25 18 101
106A 6.0 7.2 18 25 17 100 19 25 18 101
108A 11.5 13.8 23 25 21 100 24 25 22 101
109A 14.0 16.8 27 30 24 100 28 30 25 101
108A+108A 23.0 27.7 40 40 37 100 42 45 38 101
MED 108A+109A 25.5 30.7 44 45 40 100 45 45 41 101
HIGH
NONE - - 19 25 18 107 20 25 19 108
106A 6.0 7.2 19 25 18 107 20 25 19 108
108A 11.5 13.8 24 25 22 107 26 30 23 108
109A 14.0 16.8 28 30 25 107 29 30 27 108
108A+108A 23.0 27.7 42 45 38 107 43 45 39 108
108A+109A 25.5 30.7 45 50 41 107 47 50 43 108
575-3-60
STD NONE - - 12 15 12 63 14 20 14 65
MED NONE - - 13 20 12 74 15 20 15 76
HIGH NONE - - 13 20 12 74 15 20 15 76
LEGEND:
CO- Convenient outlet
DISC - Disconnect
FLA - Full load amps
IFM - Indoor fan motor
LRA - Locked rotor amps
MCA - Minimum circuit amps
MOCP - Maximum over current protection
PE - Power exhaust
UNPWRD CO - Unpowered convenient outlet
NOTES:
1. In compliance with NEC requirements for multimotor and combina
tion load equipment (refer to NEC Articles 430 and 440), the overcur
rent protective device for the unit shall be fuse or HACR breaker. Ca
nadian units may be fuse or circuit breaker.
2. Unbalanced 3‐Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage is
greater than 2%. Use the following formula to determine the percent
age of voltage imbalance.
% Voltage Imbalance = 100 x
max voltage deviation from average voltage
average voltage
Example: Supply voltage is 230‐3‐60
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage = (224 + 231 + 226) =681
33
= 227
Determine maximum deviation from average voltage.
(AB) 227 – 224 = 3 v Maximum deviation is 4 v...........
(BC) 231 – 227 = 4 v Determine percent of voltage imbalance...........
% Voltage Imbalance = 100 x 4
227
= 1.76%
This amount of phase imbalance is satisfactory as it is below the maximum allowable
2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your
local electric utility company immediately.

513 01 3202 0018
FIGURE 19 Wiring for Optional Economizer
Economizer
Board
Step 11 — Adjust Factory−Installed Options
Smoke Detector —
Smoke detector will be connected at the Controls
Connections Board, at terminals marked “Smoke
Shutdown”. Remove jumper JMP 3 when ready to energize
unit.
Economizer Occupancy Switch —
Refer to Fig. 19 for general EconoMi$er IV wiring. External
occupancy control is managed through a connection on the
Controls Connections Board.
If external occupancy control is desired, connect a time
clock or remotely controlled switch (closed for Occupied,
open for Unoccupied sequence) at terminals marked
OCCUPANCY. Remove or cut jumper JMP 2 to complete
the installation.
Step 12 — Install Accessories as required
Available accessories include:
Roof Curb
Thru−base connection kit (must be installed before unit is
set on curb)
Manual outside air damper
Two−Position motorized outside air damper
Economizer (with control and integrated barometric relief)
Winter Start Kit
Power Exhaust
Differential dry−bulb sensor
Outdoor enthalpy sensor
Differential enthalpy sensor
CO2 sensor
Low Ambient Control
Louvered hail guard
Hood−type hail guard
UV−C lamp kit
Phase monitor control
Refer to separate installation instructions for information on
installing these accessories.

513 01 3202 00 19
UNIT START-UP CHECKLIST
(Remove and Store in Job File)
MODEL NO.: SERIAL NO.:
I. PRE-START-UP
jVERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT
jVERIFY INSTALLATION OF OUTDOOR AIR HOOD
jVERIFY INSTALLATION OF FLUE EXHAUST AND INLET HOOD
jVERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS
jVERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT
jCHECK THAT INDOOR−AIR FILTERS ARE CLEAN AND IN PLACE
jCHECK THAT OUTDOOR AIR INLET SCREENS ARE IN PLACE
jVERIFY THAT UNIT IS LEVEL
jCHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND VERIFY
SETSCREW IS TIGHT
jVERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED
jVERIFY THAT SCROLL COMPRESSORS ARE ROTATING IN THE CORRRECT DIRECTION
jVERIFY INSTALLATION OF THERMOSTAT
II. START-UP
ELECTRICAL
SUPPLY VOLTAGE L1−L2 L2−L3 L3−L1
COMPRESSOR AMPS 1 L1 L2 L3
COMPRESSOR AMPS 2 L1 L2 L3
SUPPLY FAN AMPS L1 L2 L3
TEMPERATURES
OUTDOOR−AIR TEMPERATURE _F DB (DRY BULB)
RETURN−AIR TEMPERATURE _F DB _F WB (WET BULB)
COOLING SUPPLY AIR TEMPERATURE _F
PRESSURES
REFRIGERANT SUCTION CIRCUIT A PSIG
CIRCUIT B PSIG
REFRIGERANT DISCHARGE CIRCUIT A PSIG
CIRCUIT B PSIG
jVERIFY REFRIGERANT CHARGE USING CHARGING CHARTS
GENERAL
jECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS (IF EQUIPPED)
jVERIFY SMOKE DETECTOR UNIT SHUTDOWN BY UTILIZING MAGNET TEST

513 01 3202 0020
III. HOT GAS RE−HEAT START-UP
STEPS
j1. CHECK CTB FOR JUMPER 5, 6, 7
JUMPER 5, 6, 7 MUST BE CUT AND OPEN
j2. OPEN HUMIDISTAT CONTACTS
j3. START UNIT IN COOLING (CLOSE Y1)
OBSERVE AND RECORD
A. SUCTION PRESSURE PSIG
B. DISCHARGE PRESSURE PSIG
C. ENTERING AIR TEMPERATURE _F
D. LIQUID LINE TEMPERATURE
AT OUTLET OR REHEAT COIL _F
E. CONFRIM CORRECT ROTATION FOR COMPRESSOR
F. CHECK FOR CORRECT RAMP−UP OF OJUTDOOR FAN MOTOR AS CONDENSER COIL WARMS
j4. CHECK UNIT CHARGE PER CHARGING CHART
j5. SWITCH UNIT TO HIGH−LATENT MODE (SUBCOOLER) BY CLOSING HUMIDISTAT WITH Y1 CLOSED
OBSERVE
jA. REDUCTION IN SUCTION PRESSURE (5 TO 7 PSI EXPECTED)
jB. DISCHARGE PRESSURE UNCHANGED
jC. LIQUID TEMPERATURE DROPS TO 50 TO 55_F RANGE
jD. LSV SOLENOID ENGERIZED (VALVE CLOSES)
j6. SWITCH UNIT TO DEHUMID (REHEAT) BY OPENING Y1
OBSERVE
jA. SUCTION PRESSURE INCREASES TO NORMAL COOLING LEVEL
jB. DISCHARGE PRESSURE DECREASES (35 TO 50 PSI)
jC. LIQUID TEMPERATURE RETURNS TO NORMAL COOLNG LEVEL
jD. LSV SOLENOID ENERGIZED (VALVE CLOSES)
jE. DSV SOLENOID ENERGIZED, VALVE OPENS
j7. WITH UNIT IN DEHUMID MODE CLOSE W1
COMPRESSOR AND OUTDOOR FAN STOP; LSV AND DSV SOLENOIDS DE−ENERGIZED
j8. OPEN W1 RESTORE UNIT TO DEHUMID MODE
j9. OPEN HUMIDISTAT INPUT
COMPRESSOR AND OUTDOOR FAN STOP; LSV AND DSV SOLENOIDS DE−ENERGIZED
j10. RESTORE SETPOINTS FOR THERMOSTAT AND HUMIDISTAT
Copyright 2015 International Comfort Products
Lewisburg, TN 37091 USA