International comfort products RHX036--060 User manual

516 01 3700 00 10/2014
Specifications are subject to change without notice.
INSTALLATION INSTRUCTIONS
R--410A Single--Package Rooftop Heat Pump
RHX036--060
NOTE: Read the entire instruction manual before starting
the installation
TABLE OF CONTENTS
SAFETY CONSIDERATIONS 2....................
Rated Indoor Airflow (cfm) 3.....................
INSTALLATION 6...............................
Step 1 -- Plan for Unit Location 6..................
Roof Mount 6...............................
Step 2 -- Plan for Sequence of Unit Installation 6......
Curb--Mount Installation 7.....................
Pad--Mount Installation 7......................
Frame--Mount Installation 7....................
Step 3 -- Inspect Unit 7...........................
Step 4 -- Provide Unit Support 7...................
Roof Curb Mount 7..........................
Slab Mount (Horizontal Units Only) 7...........
Alternate Unit Support
(In Lieu of Curb or Slab Mount) 7..............
Step 5 -- Field Fabricate Ductwork 9................
For Units with Accessory Electric Heaters 9......
Step 6 -- Rig and Place Unit 9.....................
Positioning on Curb 9........................
Step 7 -- Convert to Horizontal and Connect
Ductwork 10...........................
Step 8 -- Install Outside Air Hood 11...............
Economizer and Two Position Damper Hood
Package Removal and Setup — Factory Option 11..
Economizer Hood and Two--Position Hood 11.....
Step 9 -- Units with Hinged Panels Only 12..........
Step 10 -- Install External Condensate Trap
and Line 12............................
Step 11 -- Make Electrical Connections 13...........
Field Power Supply 13........................
Units with Factory--Installed
Non--Fused Disconnect 13.....................
Units without Factory--Installed
Non--Fused Disconnect 14.....................
All Units 14................................
Convenience Outlets 14.......................
Units without Thru--Base Connections 15.........
Field Control Wiring 15.......................
Thermostat 15...............................
Unit without Thru--Base Connection Kit 15.......
Heat Anticipator Settings 15...................
Electric Heaters 16............................
Single Point Boxes & Supplementary Fuses 17....
Single Point Boxes without Fuses 17............
Low--Voltage Control Connections 17............
EconoMi$er X (Factory--installed Option) 18.......
Smoke Detectors 18...........................
Step 12 -- Adjust Factory--Installed Options 23........
Step 13 -- Install Accessories 23...................

2516 01 3700 00
Specifications are subject to change without notice.
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/NFPA 70,
National Electrical Code (NEC); in Canada, CSA C22.1)
for special requirements.
It is important to recognize safety information. This is the
safety--alert symbol . When you see this symbol on the
unit and 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 severe personal injury or
death. WARNING signifies hazards which could result in
personal 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.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal
injury or death.
Before performing service or maintenance operations
on unit, turn off main power switch to unit and install
lock(s) and lockout tag(s). Ensure electrical service to
rooftop unit agrees with voltage and amperage listed
on the unit rating plate. 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
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 ignition sources
away from refrigerants and oils.
!WARNING
CUT HAZARD
Failure to follow this caution may result in personal
injury.
Sheet metal parts may have sharp edges or burrs. Use
care and wear appropriate protective clothing, safety
glasses and gloves when handling parts and servicing
air conditioning equipment.
CAUTION
!

516 01 3700 00 3
Specifications are subject to change without notice.
Rated Indoor Airflow (cfm)
The table to the right lists the rated indoor airflow used
for the AHRI efficiency rating for the units covered in this
document.
Model Number Full Load Airflow (cfm)
RHX036 1225
RHX048 1700
RHX060 1750
MODEL NOMENCLATURE
MODEL SERIES RHX 0 3 6HDAA0AAA
Position Number
12345670910111213
14
Type
Voltage
Heating Capacity
Outdoor Air Options / Control
0A = No Options
AT = Non−powered 115v C.O.
4B = Non−Fused Disconnect
BR = Supply Air Smoke Detector
AA = Easy Access Hinged Panels Factory Installed Options1
A = Aluminum / Copper Cond & Evap Coil
B = Precoat Alum/Copper Cond with Alum / Copper Evap (3 phase only)
C = E−Coated Alum/Copper Cond with Alum / Copper Evap (3 phase only)
D = E−Coated Alum / Copper Cond & Evap (3 phase only)
E = Copper/Copper Cond & Alum/Copper Evap (3 phase only)
F = Copper/Copper Cond & Evap (3 phase only) Condenser / Evaporator Coil Configuration
A = Standard Single Speed Indoor Fan Motor. For W7212 Controls
B = Standard Single Speed Indoor Fan Motor. For W7220 Controls Motor Type Option
NOTE: Factory installed options are NOT available on single phase models. This includes economizers and 2 position dampers.
1Combinations of FIOPS are available.
Efficiency
Motor Option (Indoor Fan)
036 = 3 Tons
048 = 4 Tons
060 = 5 Tons
K = 208/230−1−60
H = 208/230−3−60
L = 460−3−60
S = 575−3−60
0 = No Heat (Field Installed electric heaters available)
A = Standard Motor
B = High Static Motor
C = Medium Static Motor
X = Direct Drive ECM
A = None
B = Economizer w/Bara−relief, OA Temp sensor
E = Economizer w/Bara−relief + CO2 Sensor, OA Temp sensor
H = Economizer w/Bara−relief, enthalpy sensor
L = Economizer w/Bara−relief + CO2 Sensor, enthalpy sensor
U = Temp Ultra Low Leak Economizer w/Bara−relief
W = Enthalpy Ultra Low Leak Economizer w/Bara−relief
P = 2−Position damper
R = Rooftop
H = Heat Pump
X= Standard 14 SEER Efficiency
Nominal Cooling Capacity
C14287

4516 01 3700 00
Specifications are subject to change without notice.
C14288
Fig. 1 -- Unit Dimensional Drawing

516 01 3700 00 5
Specifications are subject to change without notice.
C14289
Fig. 1 -- Unit Dimensional Drawing (cont.)

6516 01 3700 00
Specifications are subject to change without notice.
C
B
A
D
C08337
LOCATION DIMENSION CONDITION
A
48---in (1219 mm)
18---in (457 mm)
18---in (457) mm
12---in (305 mm)
Unit disconnect is mounted on panel
No disconnect, convenience outlet option
Recommended service clearance
Minimum clearance
B
42---in (1067 mm)
36---in (914 mm)
Special
Surface behind servicer is grounded (e.g., metal, masonry wall)
Surface behind servicer is electrically non---conductive (e.g., wood, fiberglass)
Check sources of flue products within 10---ft of unit fresh air intake hood
C36---in (914 mm)
18---in (457 mm)
Side condensate drain is used
Minimum clearance
D
42---in (1067 mm)
36---in (914 mm)
Special
Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
Surface behind servicer is electrically non---conductive (e.g., wood, fiberglass)
Check for adjacent units or building fresh air intakes within 10--- ft (3 m) of this unit’s flue outlet
NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application
planning overhead obstruction or for vertical clearances.
Fig. 2 -- Service Clearance Dimensional Drawing
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 installa-
tion 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 minimum clearances required
for safety (including clearance to combustible surfaces),
unit performance and service access below, around and
above unit as specified in unit drawings. See Fig. 2.
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
unit.
Select a unit mounting system that provides adequate
height to allow installation of condensate trap per
requirements. Refer to Step 10 — Install External
Condensate Trap and Line – for required trap dimensions.
Roof Mount —
Check building codes for weight distribution
requirements. Unit operating weight is shown in Table 1.
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.

516 01 3700 00 7
Specifications are subject to change without notice.
Table 1 – Operating Weights
RHX UNITS LB (KG) UNITS LB (KG) UNITS LB (KG)
036 048 060
Base Unit 495 (224) 580 (263) 610 (276)
Economizer
Vertical 50 (23) 50 (23) 50 (23)
Horizontal 80 (36) 80 (36) 80 (36)
Cu Fins 25 (11) 43 (20) 56 (25)
Unpowered Outlet 5(2) 5(2) 5(2)
Curb
14---in/356 mm 115 (52) 115 (52) 115 (52)
24---in/610 mm 197 (89) 197 (89) 197 (89)
Curb--mounted Installation —
Install curb
Install field--fabricated ductwork inside curb
Install accessory thru--base service connection package
(affects curb and unit) (refer to accessory installation
instructions for details)
Prepare bottom condensate drain connection to suit
planned condensate line routing (refer to Step 10 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.
Step 4 — Provide Unit Support
Roof Curb Mount —
Accessory roof curb details and dimensions are shown in
Fig. 4. 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 shown in
Fig. 3. Refer to Accessory Roof Curb Installation
Instructions for additional information as required.
A-B
0.5” (13)
B-C
1.0” (25)
A-C
1.0” (25)
MAXIMUM ALLOWABLE
DIFFERENCE IN. (MM)
C06110
Fig. 3 -- Unit Leveling Tolerances
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
package must be installed before the unit is set 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. 4. 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.

8516 01 3700 00
Specifications are subject to change without notice.
EE
7/16" [11]
4 9/16"
[115.5]
1/4"
[7.0]
5' 7-3/8"
[1711.3]
1' 4-13/16" [427] INSIDE
1-3/4" [44.4]
2-3/8" [61]
1-3/4" [44.5]
1.00" [25.4]
"A"
1-3/4" [44.4]
21.74"
[552.2]
5.42"
[137.7]
11.96"
[303.8]
4.96"
[126.0] 70.87"
[1800.2]
40.69"
[1033.5]
21.84"
[554.7]
16.03"
[407.2]
1.75"
[44.5] 20.41"
[518.3]
3.00" [76.2]
13.78"
[350.0]
14.00"
[355.6]
3.00" [76.2]
15.19"
[385.8]
32.19"
[817.6]
3'-1 3/16"
[944.6]
"A"
1-3/4" [44.5]
CRBTMPWR001A01 3/4" [19] NPT
3/4" [19] NPT
1/2" [12.7] NPTCRRFCURB002A01
CONNECTOR PKG. ACC. GAS CONNECTION TYPE GAS FITTING POWER WIRING
FITTING
CONTROL WIRING
FITTING
ACCESSORY CONVENIENCE
OUTLET WIRING CONNECTOR
THRU THE CURB
1/2" [12.7] NPT 1/2" [12.7] NPT
CRBTMPWR003A01 THRU THE BOTTOM
ROOF CURB
ACCESSORY # A
CRRFCURB001A01 14"
[356]
24"
[610]
ECN NO.APP'DCHK'DBYDATEREVISION RECORDREV
1067898--MMC04/22/13
OVERALL DIM. 5'-7 3/8" WAS 5'-7 7/8; 18GA MATERIAL WA 16 GA.; NAIL FIELD SUPPLIED WAS WITH CURB
A
DRAWING RELEASE LEVEL: PRODUCTION THIRD ANGLE PROJECTION
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN INCHES
TOLERANCES ON: THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN
IS PROPRIETARY TO CARRIER CORPORATION AND SHALL NOT BE USED OR DISCLOSED TO OTHERS, IN WHOLE OR IN PART, WITHOUT THE WRITTEN AUTHORIZATION OF CARRIER CORPORATION.
1 DEC 2 DEC 3 DEC ANG
MATERIAL ----
- - -
AUTHORIZATION NUMBER TITLE
1041738 CURB ASY, ROOF
ENGINEERING MANUFACTURING (004-007)
ENGINEERING REQUIREMENTS ----SIZE DRAWING NUMBER REV
T-005, Y-002 DRAFTER CHECKER
D48TC400427 B
WEIGHT:
-MMC 06/17/11 - -
SHEET 5 OF 5
SURFACE FINISH MFG/PURCH MODEL (INTERNAL USE ONLY) NEXT DRAWING SCALE DISTRIBUTION
- PURCH - N/A MMC
NOTES: 1. ROOFCURB ACCESSORY IS SHIPPED DISASSEMBLED. 2. INSULATED PANELS: 25.4 [1"] THK. POLYURETHANE FOAM, 44.5 [1-3/4] # DENSITY. 3. DIMENSIONS IN [ ] ARE IN MILLIMETERS. 4. ROOFCURB: 18 GAGE STEEL. 5. ATTACH DUCTWORK TO CURB. (FLANGES OF DUCT REST ON CURB). 6. SERVICE CLEARANCE 4 FEET ON EACH SIDE. 7. DIRECTION OF AIR FLOW. 8. CONNECTOR PACKAGE CRBTMPWR001A01 IS FOR THRU-THE-CURB GAS TYPE PACKAGE CRBTMPWR003A01 IS FOR THRU-THE-BOTTOM TYPE GAS CONNECTIONS.
TYPICAL (4) SIDES
SUPPLY AIR RETURN AIR
ROOFING MATERIAL (FIELD SUPPLIED)
CANT STRIP (FIELD SUPPLIED)
ROOFING FELT (FIELD SUPPLIED)
COUNTER FLASHING (FIELD SUPPLIED)
UNIT
GASKET
(SUPPLIED WITH CURB)
RIGID INSULATION (FIELD SUPPLIED)
DUCT
(FIELD SUPPLIED)
NAIL (FIELD SUPPLIED)
CERTIFIED DRAWING
VIEW "B"
CORNER DETAIL
SEE VIEW "B"
RETURN AIR
SUPPLY AIR
SUPPLY AIR OPENING
RETURN AIR OPENING
GAS SERVICE PLATE THRU THE CURB DRILL HOLE 2" [50.8] @ ASSEMBLY (IF REQUIRED) (SEE NOTE #8)
SEE NOTE #2
11 3/4"[298.5] WIDE INSULATED DECK PANELS
8 9/16"[217.5] WIDE INSULATED DECK PANEL
1/3/4"[44.5]
SCALE 0.250
E-E
SECTION
C13310
Fig. 4 -- Roof Curb Details

516 01 3700 00 9
Specifications are subject to change without notice.
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.
Fabricate supply ductwork so that the cross sectional
dimensions are equal to or greater than the unit supply
duct opening dimensions for the first 18 in. (458 mm) of
duct length from the unit basepan.
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.
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in damage
to roofing materials.
Membrane roofs can be cut by sharp sheet metal
edges. Be careful when placing any sheet metal parts
on such roof.
CAUTION
!
For Units with Accessory Electric Heaters —
All installations require a minimum clearance to
combustible surfaces of 1--in (25 mm) from duct for first
12--in (305 mm) away from unit.
Outlet grilles must not lie directly below unit discharge.
NOTE: A 90--degree elbow must be provided in the
ductwork to comply with UL (Underwriters Laboratories)
code for use with electric heat.
PERSONAL INJURY HAZARD
Failure to follow this warning could cause personal
injury.
For vertical supply and return units, tools or parts
could drop into ductwork and cause an injury. Install
a 90--degree turn in the return ductwork between the
unit and the conditioned space. If a 90--degree elbow
cannot be installed, then a grille of sufficient strength
and density should be installed to prevent objects
from falling into the conditioned space. Due to
electric heater, supply duct will require 90--degree
elbow.
!WARNING
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.
Before setting the unit onto the curb, recheck gasketing on
curb.
Rigging materials under unit (cardboard or wood to
prevent base pan damage) must be removed PRIOR to
placing the unit on the roof curb.
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 plug can
be tightened with a 1/2--in. square socket drive extension. For
further details see “Step 10 -- Install External Condensate
Trap and Line” on page 12.
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.
If using top crate as spreader bar, once unit is set,
carefully lower wooden crate off building roof top to
ground. Ensure that no people or obstructions are
below prior to lowering the crate.
CAUTION
!
PositioningonCurb—
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 1/4in. (6.4
mm).
Although unit is weatherproof, guard against water from
higher level runoff and overhangs.
After unit is in position, remove rigging skids and
shipping materials.
→
517

10 516 01 3700 00
Specifications are subject to change without notice.
RGX036
RGX048
RGX060
RAX036
RAX048
RAX060
RHX036
RHX048
RHX060
C14249
Fig. 5 -- Rigging Label
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.
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.
C06108
Fig. 6 -- Horizontal Conversion Panels

516 01 3700 00 11
Specifications are subject to change without notice.
Step 8 — Install Outside Air Hood
Economizer and Two Position Damper Hood
Package Removal and Setup -- Factory Option
NOTE: Economizer and Two Position Damper are not
available as factory installed options for size 04--06 single
phase (--3 voltage code) models.
1. The hood is shipped in knock--down form and must be
field assembled. The indoor coil access panel is used as
the hood top while the hood sides, divider and filter are
packaged together, attached to a metal support tray us-
ing plastic stretch wrap, and shipped in the return air
compartment behind the indoor coil access panel. The
hood assembly’s metal tray is attached to the basepan
and also attached to the damper using two plastic tie--
wraps.
2. To gain access to the hood, remove the filter access
panel. (See Fig. 7.)
FILTER ACCESS PANEL
OUTDOOR-AIR OPENING AND
INDOOR COIL ACCESS PANEL
COMPRESSOR
ACCESS PANEL
C06023
Fig. 7 -- Typical Access Panel Locations
3. Locate the (2) screws holding the metal tray to the
basepan and remove. Locate and cut the (2) plastic
tie--wraps securing the assembly to the damper. (See
Fig. 8) Be careful to not damage any wiring or cut
tie--wraps securing any wiring.
Hood Parts
Plastic Tie Wrap
Qty (2)
Screws for Metal Tray
Qty (2)
C08639
Fig. 8 -- Economizer and Two--Position Damper
Hood Parts Location
4. Carefully lift the hood assembly (with metal tray)
through the filter access opening and assemble per the
steps outlined in Economizer Hood and Two–Position
Hood, below.
Economizer Hood and Two--Position Hood —
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 bot-
tom of the indoor coil access panel. See Fig. 9.
TOP
PANEL
INDOOR
COIL
ACCESS
PANEL
INDOOR
COIL
ACCESS
PANEL
CAULK
HERE
TOP
PANEL
C06025
Fig. 9 -- 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. 10.
B
TOP
PANEL
INDOOR COIL
ACCESS PANEL
19 1/16”
SCREW
HOOD DIVIDER
LEFT
HOOD
SIDE
33 3/8”
(848mm)
(483mm)
C06026
Fig. 10 -- Economizer Hood Construction
3. Remove the shipping tape holding the economizer
barometric relief damper in place (economizer only).

12 516 01 3700 00
Specifications are subject to change without notice.
4. Insert the hood divider between the hood sides. See
Fig. 10 and Fig. 11. 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. 11.
6. Caulk the ends of the joint between the unit top panel
and the hood top.
7. Replace the filter access panel.
DIVIDER
BAROMETRIC
RELIEF
CLEANABLE
ALUMINUM
FILTER FILTER
HOOD
FILTER
CLIP
OUTSIDE
AIR
C08634
Fig. 11 -- Economizer Filter Installation
Step 9 — Units with Hinged Panels Only
Relocate latch shipped inside the compressor
compartment behind the hinged compressor door to
location shown in Fig. 12 after unit installation.
If the unit does not have hinged panels, skip this step and
continue at step 10.
C12101
Fig. 12 -- Compressor Door Latch Location
Step 10 — 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. See Fig. 13. Unit airflow configuration
does not determine which drain connection to use. Either
drain connection can be used with vertical or horizontal
applications.
DRAIN
(FACTORY-INSTALLED)
PLUG
CONDENSATE PAN (SIDE VIEW)
STANDARD
SIDE DRAIN
ALTERNATE
BOTTOM DRAIN
C08021
Fig. 13 -- Condensate Drain Pan (Side View)
To use the alternate bottom drain connection, remove the
red drain plug from the bottom connection (use a 1/2-- i n .
square socket drive extension) and install it in the side
drain connection.
The piping for the condensate drain and external trap can
be completed after the unit is in place. See Fig. 14.
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
C08022
Fig. 14 -- Condensate Drain Piping Details
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.).

516 01 3700 00 13
Specifications are subject to change without notice.
Step 11 — Make Electrical Connections
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
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; ANSI/NFPA 70, latest edition
(in Canada, Canadian Electrical Code CSA [Canadian
Standards Association] C22.1), and local electrical
codes.
!WARNING
NOTE: Field--supplied wiring shall conform with the
limitations of minimum 63_F(33_C) rise.
Field Power Supply —
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). See Fig. 15 and unit label diagram for field
power wiring connections.
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 Non-Fused Disconnect Option
Units With Non-Fused Disconnect Option
2
4
6
1
3
5
L1
L2
L3
Optional
Disconnect
Switch
Disconnect factory test leads; discard.
Factory
Wiring
11 13 13
L1 L2 L3
TB
C
IFC
(3 Phase
Indoor Motor)
(1 Phase Indoor Motor
and 1 Phase Unit)
208/230-1-60
208/230-3-60
460-3-60
575-3-60
Disconnect
per
NEC
C14264
Fig. 15 -- Power Wiring Connections
!WARNING
FIRE HAZARD
Failure to follow this warning could result in
intermittent operation or performance satisfaction.
Do not connect aluminum wire between disconnect
switch and RHX unit. Use only copper wire.
(See Fig. 16.)
COPPER
WIRE ONLY
ELECTRIC
DISCONNECT
SWITCH
ALUMINUM
WIRE
A93033
Fig. 16 -- Disconnect Switch and Unit
Units with Factory--Installed Non--Fused Disconnect —
The factory--installed option non--fused disconnect (NFD)
switch is located in a weatherproof enclosure located
under the main control box. The manual switch handle and
shaft are shipped in the disconnect enclosure. Assemble the
shaft and handle to the switch at this point. Discard the
factory test leads (see Fig. 15).
Connect field power supply conductors to LINE side
terminals when the switch enclosure cover is removed to
attach the handle.
C12284
Fig. 17 -- Location of Non--Fused Disconnect Enclosure
To field install the NFD shaft and handle:
1. Remove the unit front pane (see Fig. 1).
2. Remove (3) hex screws on the NFD enclosure -- (2) on
the face of the cover and (1) on the left side cover.
3. Remove the front cover of the NFD enclosure.
4. Make sure the NFD shipped from the factory is at
OFF position (the arrow on the black handle knob is
at OFF).
5. Insert the shaft with the cross pin on the top of the shaft
in the horizontal position.

14 516 01 3700 00
Specifications are subject to change without notice.
6. Measure from the tip of the shaft to the top surface of
the black pointer; the measurement should be 3.75 --
3.88 in. (95 -- 99 mm).
7. Tighten the locking screw to secure the shaft to the
NFD.
8. Turn the handle to the OFF position with red arrow
pointing at OFF.
9. Install the handle on to the painted cover horizontally
with the red arrow pointing to the left.
10. Secure the handle to the painted cover with (2) screws
and lock washers supplied.
11. Engaging the shaft into the handle socket, re--install
(3) hex screws on the NFD enclosure.
12. Re--install the unit front panel.
C12279
Fig. 18 -- Handle and Shaft Assembly for NFD
Units Without Factory--Installed
Non--Fused 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.
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 and the unit
label diagram for power wiring connections to the unit
power terminal blocks and equipment ground. Maximum
wire size is #2 ga AWG (copper only) per pole on
contactors.
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.
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.
NOTE: Check all factory and field electrical connections
for tightness.
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
Units with convenience outlet circuits may use
multiple disconnects. Check convenience outlet for
power status before opening unit for service. Locate
its disconnect switch, if appropriate, and open it.
Lock--out and tag--out this switch, if necessary.
!WARNING
Convenience Outlets — Non--powered -- requires the
field installation of a general--purpose 125--volt 15--A
circuit powered from a source elsewhere in the building.
Observe national and local codes when selecting wire
size, fuse or breaker requirements and disconnect switch
size and location. Route 125--v power supply conductors
into the bottom of the utility box containing the duplex
receptacle.
Installing Weatherproof Cover: A weatherproof
while-in-use cover for the factory-installed convenience
outlets is now required by UL standards. This cover
cannot be factory-mounted due its depth; it must be
installed at unit installation. For shipment, the
convenience outlet is covered with a blank cover plate.
The weatherproof cover kit is shipped in the unit’s control
box. The kit includes the hinged cover, a backing plate
and gasket.
DISCONNECT ALL POWER TO UNIT AND
CONVENIENCE OUTLET. LOCK--OUT AND TAG--OUT
ALL POWER.
Remove the blank cover plate at the convenience outlet;
discard the blank cover.
Loosen the two screws at the GFCI duplex outlet, until
approximately 1/2-in (13 mm) under screw heads are
exposed. Press the gasket over the screw heads. Slip the
backing plate over the screw heads at the keyhole slots
and align with the gasket; tighten the two screws until
snug (do not over-tighten).
Mount the weatherproof cover to the backing plate as
shown in Fig. 19. Remove two slot fillers in the bottom of
the cover to permit service tool cords to exit the cover.
Check for full closing and latching.

516 01 3700 00 15
Specifications are subject to change without notice.
RECEPTACLE
NOT INCLUDED
COVER – WHILE-IN-USE
WEATHERPROOF
BASE PLATE FOR
GFCI RECEPTACLE
C09022
Fig. 19 -- Weatherproof Cover Installation
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. 15.
Voltage to compressor terminals during operation must be
within voltage range indicated on unit nameplate. See
Tables 3 -- 5. 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 Tables 3 -- 5,
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 warranty.
Field Control Wiring —
The RHX unit requires an external temperature control
device. This device can be a thermostat.
Thermostat —
Install the accessory thermostat according to installation
instructions included with the accessory.
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
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(95_F)
minimum]. For 50 to 75 ft. (15 to 23 m), use no. 16 AWG
insulated wire [35_C(95_F) minimum]. For over 75 ft.
(23 m), use no. 14 AWG insulated wire [35_C(95_F)
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.
X
C
G
W2
C
W2
G
W1
O/B/Y2 Y2
R
W1
R
Y1 Y1
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. Do not configure for O output.
Note 2: W2 connection not required on units without electric heating.
Field Wiring
Central
Terminal
Board
Typical
Thermostat
Connections
C09012
Fig. 20 -- Low--Voltage Connections
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. 21.
NOTE: If thru--the--bottom connections accessory is
used, refer to the accessory installation instructions for
information on routing power and control wiring.
RACEWAY
HOLE IN END PANEL (HIDDEN)
C08027
Fig. 21 -- Field Control Wiring Raceway
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.

16 516 01 3700 00
Specifications are subject to change without notice.
Electric Heaters
RHX units may be equipped with field--installed accessory
electric heaters. The heaters are modular in design, with
heater frames holding open coil resistance wires strung
through ceramic insulators, line--break limit switches and
a control contactor. One or two heater modules may be
used in a unit.
Heater modules are installed in the compartment below
the indoor (supply) fan outlet. Access is through the
indoor access panel. Heater modules slide into the
compartment on tracks along the bottom of the heater
opening. See Fig. 22, Fig. 23 and Fig. 24.
Not all available heater modules may be used in every
unit. Use only those heater modules that are UL listed for
use in a specific size unit. Refer to the label on the unit
cabinet for the list of approved heaters.
Unit heaters are marked with Heater Model Numbers. But
heaters are ordered as and shipped in cartons marked with
a corresponding heater Sales Package part number. See
Table 2 for correlation between heater Model Number and
Sales Package part number.
NOTE: The value in position 9 of the part number differs
between the sales package part number (value is 1) and a
bare heater model number (value is 0).
DISCONNECT MOUNTING
LOCATION
UNIT BLOCK-OFF
PANEL
OUTDOOR
ACCESS PANEL
INDOOR
ACCESS
PANEL
C08133
Fig. 22 -- Typical Access Panel Location (3--5 Ton)
DISCONNECT
MOUNTING
LOCATION
EMT OR RIGID CONDUIT
(FIELD-SUPPLIED)
SINGLE
POINT BOX
CENTER
POST
HEATER
COVERS
HEATER
MOUNTING
BRACKET
HEATER
MODULE
(LOCATION 2)
HEATER
MODULE
(LOCATION 1)
SINGLE POINT
BOX
MOUNTING
SCREW
BRACKET AND
CONDUIT
DRIP BOOT
MAIN
CONTROL
BOX
CONTROL WIRE TERMINAL BLOCK
MANUAL RESET
LIMIT SWITCH
C08134
Fig. 23 -- Typical Component Location
TRACK
FLANGE
C08135
Fig. 24 -- Typical Module Installation
Table 2 – Heater Model Number
Bare Heater Model Number C R H E A T E R 0 0 1 A 0 0
Heater Sales Package PNO
Includes:
Bare Heater
Carton and packing materials
Installation sheet
C R H E A T E R 1 0 1 A 0 0

516 01 3700 00 17
Specifications are subject to change without notice.
Single Point Boxes and Supplementary Fuses —
When the unit MOCP device value exceeds 60--A,
unit--mounted supplementary fuses are required for each
heater circuit. These fuses are included in accessory Single
Point Boxes, with power distribution and fuse blocks. The
single point box will be installed directly under the unit
control box, just to the left of the partition separating the
indoor section (with electric heaters) from the outdoor
section. The Single Point Box has a hinged access cover. See
Fig. 25. The Single Point Box also includes a set of power
taps and pigtails to complete the wiring between the Single
Point Box and the unit’s main control box terminals. Refer
to the accessory heater and Single Point Box installation
instructions for details on tap connections.
ALLIEDPA
MODELNO.
ERIALNO.
CORP
.
OD
22.2
3
1
23
ISTEDAIR
NDITIONING
UIPACCESS
346N
.
P/N
2- 5610-4
REV
1113
2123
CONTROL
BOX
BUSHING
SINGLE
POINT BOX
MOUNTING
SCREWS
FOAM
BUSHING
DRIP BOOT
BRACKET
MOUNTING
SCREWS
HEATER
RELAYS
POWER
WIRES
HEATER
MOUNTING
SCREWS
C14253
Fig. 25 -- Typical Single Point Installation
All fuses on RHX units are 60--A. (Note that all heaters
are qualified for use with a 60--A fuse, regardless of actual
heater ampacity, so only 60--A fuses are necessary.)
Single Point Boxes without Fuses —
Unit heater applications not requiring supplemental fuses
require a special Single Point Box without any fuses. The
accessory Single Point Boxes contain a set of power taps
and pigtails to complete the wiring between the Single
Point Box and the unit’s main control box terminals. Refer
to accessory heater and Single Point Box installation
instructions for details on tap connections.
Low--Voltage Control Connections —
Pull the low--voltage control leads from the heater
module(s) -- VIO and BRN (two of each if two modules
are installed; identify for Module #1) -- to the 4--pole
terminal board TB4 located on the heater bulkhead to the
left of Heater #1. Connect the VIO lead from Heater #1 to
terminal TB4--1. For 2 stage heating, connect the VIO
lead from Heater #2 to terminal TB4--2. For 1 stage
heating with 2 heater modules connect the VIO lead from
both Heater #1 and #2 to terminal TB4--1. Connect both
BRN leads to terminal TB4--3. See Fig. 26.
ORN
BRN
Field
Connections
HR1: On Heater 1 in Position #1
HR2: On Heater 2 in Position #2 (if installed)
2
3
12
13
VIO
ORN VIO BRN
VIO BRN BRN
VIO
2
TB4
VIO HR2
HR1
BRN
VIO BRN
Elec Htr
CTB
CONTL
BOARD
C08331
Fig. 26 -- Accessory Electric Heater Control Connections

18 516 01 3700 00
Specifications are subject to change without notice.
EconoMi$er X (Factory--Installed Option)
For details on operating RGX/RAX/RHX units equipped
with the factory--installed EconoMi$er X option, refer to
Factory--Installed Economizers for RGH/RAH/RHH/
RGS/RAS/RHS Rooftop Units, 3 to 27.5 Nominal Tons.
Economizer Supplement Related to California Title 24
(Literature number: 50901170301SS, or later).
C14225
Fig. 27 -- EconoMi$er X W7220 Controller Wiring Diagram
Smoke Detectors
Smoke detectors are available as factory--installed options on
RHX models. Smoke detectors may be specified for Supply
Air only without or with economizer. All components
necessary for operation are factory--provided and mounted.
The unit is factory--configured for immediate smoke detector
shutdown operation; additional wiring or modifications to
unit terminal board may be necessary to complete the unit
and smoke detector configuration to meet project
requirements.

516 01 3700 00 19
Specifications are subject to change without notice.
Table 3 – RHX036 Unit Wire/Fuse or HACR Breaker Sizing Data
UNITUNIT
N O M . V --- P h --- H Z
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
RHX036
208/230--- 1--- 60
D D --- S T D
NONE --- --- 30 45 29 88 32 45 31 90
101A 3.3/4.4 15.9/18.3 49/52 60/60 47/50 104/106 51/54 60/60 49/52 106/108
102A 4.9/6.5 23.5/27.1 59/63 60/70 56/60 112/115 61/65 70/70 58/62 114/117
103B 6.5/8.7 31.4/36.3 69/75 70/80 65/70 119/124 71/77 80/80 67/73 121/126
104B 7.9/10.5 37.9/43.8 77/84 80/90 72/79 126/132 79/86 80/90 75/81 128/134
102A+102A 9.8/13.0 46.9/54.2 88/97 90/100 83/91 182/196 90/99 90/100 85/93 184/198
208/230--- 3--- 60
D D --- S T D
NONE --- --- 22 30 22 82 24 30 24 84
101A 3.3/4.4 9.2/10.6 33/35 40/40 32/34 91/93 35/37 40/40 34/36 93/95
102A 4.9/6.5 13.6/15.6 39/41 45/45 37/40 96/98 41/43 45/45 39/42 98/100
103B 6.5/8.7 18.1/20.9 44/48 45/50 42/46 100/103 46/50 50/50 45/48 102/105
104B 7.9/10.5 21.9/25.3 49/53 50/60 47/51 104/107 51/55 60/60 49/53 106/109
105A 12.0/16.0 33.4/38.5 64/70 70/70 60/66 115/121 66/72 70/80 62/68 117/123
MED
NONE --- --- 20/19 25/25 19/19 111 22/21 30/30 21/21 113
101A 3.3/4.4 9.2/10.6 31/33 35/35 30/31 120/122 33/35 40/40 32/33 122/124
102A 4.9/6.5 13.6/15.6 37/39 40/40 35/37 125/127 39/41 45/45 37/39 127/129
103B 6.5/8.7 18.1/20.9 42/45 45/50 40/43 129/132 44/47 45/50 42/45 131/134
104B 7.9/10.5 21.9/25.3 47/51 50/60 44/48 133/136 49/53 50/60 46/50 135/138
105A 12.0/16.0 33.4/38.5 61/67 70/70 58/63 144/150 63/69 70/70 60/65 146/152
HIGH
NONE --- --- 23/23 30/30 23/23 147 25/25 30/30 25/25 149
101A 3.3/4.4 9.2/10.6 34/36 40/40 33/35 156/158 36/38 40/45 36/37 158/160
102A 4.9/6.5 13.6/15.6 40/42 45/45 38/41 161/163 42/44 45/50 41/43 163/165
103B 6.5/8.7 18.1/20.9 45/49 50/50 44/47 165/168 47/51 50/60 46/49 167/170
104B 7.9/10.5 21.9/25.3 50/54 50/60 48/52 169/172 52/56 60/60 50/54 171/174
105A 12.0/16.0 33.4/38.5 65/71 70/80 61/67 180/186 67/73 70/80 63/69 182/188
4 6 0 --- 3 --- 6 0
D D --- S T D
NONE --- --- 12 15 12 43 13 15 13 44
106A 6.0 7.2 21 25 20 50 22 25 21 51
107A 8.8 10.6 25 25 24 54 26 30 25 55
108A 11.5 13.8 29 30 28 57 30 30 29 58
109A 14.0 16.8 33 35 31 60 34 35 32 61
MED
NONE --- --- 11 15 10 57 12 15 11 58
106A 6.0 7.2 20 20 18 64 21 25 20 65
107A 8.8 10.6 24 25 22 68 25 25 23 69
108A 11.5 13.8 28 30 26 71 29 30 27 72
109A 14.0 16.8 32 35 29 74 33 35 31 75
HIGH
NONE --- --- 12 15 12 75 13 15 13 76
106A 6.0 7.2 21 25 20 82 22 25 22 83
107A 8.8 10.6 26 30 24 86 27 30 25 87
108A 11.5 13.8 30 30 28 89 31 35 29 90
109A 14.0 16.8 33 35 31 92 34 35 33 93
5 7 5 --- 3 --- 6 0
D D --- S T D NONE --- --- 10 15 10 42 12 15 12 44
MED NONE --- --- 715 745 915 947
HIGH NONE --- --- 915 860 10 15 10 62
See “Legend and Notes for Table 3 on page 19.

20 516 01 3700 00
Specifications are subject to change without notice.
Table 4 – RHX048 Unit Wire/Fuse or HACR Breaker Sizing Data
UNIT
N O M . V --- P h --- H Z
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
RHX048
208/230--- 1--- 60
D D --- S T D
NONE --- --- 37 50 35 127 38 50 37 129
101A 3.3/4.4 15.9/18.3 56/59 60/60 53/56 143/145 58/61 60/70 56/58 145/147
103B 6.5/8.7 31.4/36.3 76/82 80/90 71/77 158/163 78/84 80/90 73/79 160/165
102A+102A 9.8/13.0 46.9/54.2 95/104 100/110 89/98 221/235 97/106 100/110 91/100 223/237
103B+103B 13.1/17.4 62.8/72.5 115/127 125/150 107/119 253/272 117/129 125/150 110/121 255/274
104B+104B 15.8/21.0 75.8/87.5 131/146 150/150 122/136 279/302 133/148 150/150 125/138 281/304
208/230--- 3--- 60
D D --- S T D
NONE --- --- 26 30 26 93 28 40 28 95
102A 4.9/6.5 13.6/15.6 43/46 50/50 42/44 107/109 45/48 50/50 44/46 109/111
103B 6.5/8.7 18.1/20.9 49/53 50/60 47/50 111/114 51/54 60/60 49/52 113/116
105A 12.0/16.0 33.4/38.5 68/75 70/80 64/70 126/132 70/76 70/80 66/72 128/134
104B+104B 15.8/21.0 43.8/50.5 81/90 90/90 76/84 181/194 83/91 90/100 78/86 183/196
MED
NONE --- --- 24/24 30/30 23/23 122 26/26 30/30 26/25 124
102A 4.9/6.5 13.6/15.6 41/43 50/50 39/41 136/138 43/45 50/50 41/43 138/140
103B 6.5/8.7 18.1/20.9 47/50 50/50 44/47 140/143 49/52 50/60 46/49 142/145
105A 12.0/16.0 33.4/38.5 66/72 70/80 62/67 155/161 68/74 70/80 64/69 157/163
104B+104B 15.8/21.0 43.8/50.5 79/87 80/90 74/81 210/223 81/89 90/90 76/83 212/225
HIGH
NONE --- --- 27/27 40/40 27/27 158 29/29 40/40 29/29 160
102A 4.9/6.5 13.6/15.6 44/47 50/50 43/45 172/174 46/49 50/50 45/47 174/176
103B 6.5/8.7 18.1/20.9 50/53 50/60 48/51 176/179 52/55 60/60 50/53 178/181
105A 12.0/16.0 33.4/38.5 69/75 70/80 65/71 191/197 71/77 80/80 68/73 193/199
104B+104B 15.8/21.0 43.8/50.5 82/90 90/90 77/85 246/259 84/92 90/100 80/87 248/261
4 6 0 --- 3 --- 6 0
D D --- S T D
NONE --- --- 13 15 13 47 14 20 14 48
106A 6.0 7.2 22 25 21 54 23 25 22 55
108A 11.5 13.8 30 30 29 61 31 35 30 62
109A 14.0 16.8 34 35 32 64 35 35 33 65
108A+108A 23.0 27.7 48 50 45 102 49 50 46 103
MED
NONE --- --- 12 15 11 61 13 15 12 62
106A 6.0 7.2 21 25 19 68 22 25 20 69
108A 11.5 13.8 29 30 27 75 30 30 28 76
109A 14.0 16.8 33 35 30 78 34 35 31 79
108A+108A 23.0 27.7 46 50 43 116 47 50 44 117
HIGH
NONE --- --- 13 15 13 79 14 20 14 80
106A 6.0 7.2 22 25 21 86 23 25 22 87
108A 11.5 13.8 30 30 29 93 31 35 30 94
109A 14.0 16.8 34 35 32 96 35 35 33 97
108A+108A 23.0 27.7 48 50 45 134 49 50 46 135
5 7 5 --- 3 --- 6 0
D D --- S T D NONE --- --- 11 15 11 39 13 15 13 41
MED NONE --- --- 915 842 11 15 10 44
HIGH NONE --- --- 10 15 10 57 12 15 12 59
See “Legend and Notes for Table 3 on page 19.