International Comfort Products RHX036, RHX048, RHX060 Installation Manual
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...................
Specifications are subject to change without notice.
516 01 3700 00 10/2014
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
unit and in instructions or manuals, be alert to the
potential for personal injury.
. When you see this symbol on the
!
WARNING
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.
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.
!
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.
!
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
2 516 01 3700 00
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 RHX0 3 6 HDAA0AAA
Position Number
R = Rooftop
12345670910111213
14
H = Heat Pump
X= Standard 14 SEER Efficiency
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
Type
Efficiency
Nominal Cooling Capacity
Voltage
Heating Capacity
Motor Option (Indoor Fan)
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 Options
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)
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.
1
Combinations of FIOPS are available.
Condenser / Evaporator Coil Configuration
1
C14287
516 01 3700 00 3
Specifications are subject to change without notice.
Fig. 1 -- Unit Dimensional Drawing
C14288
4 516 01 3700 00
Specifications are subject to change without notice.
Fig. 1 -- Unit Dimensional Drawing (cont.)
C14289
516 01 3700 00 5
Specifications are subject to change without notice.
C
D
B
A
LOCATION DIMENSION CONDITION
48---in (1219 mm)
A
B
C
D
NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application
18---in (457 mm)
18---in (457) mm
12---in (305 mm)
42---in (1067 mm)
36---in (914 mm)
Special
36---in (914 mm)
18---in (457 mm)
42---in (1067 mm)
36---in (914 mm)
Special
planning overhead obstruction or for vertical clearances.
Unit disconnect is mounted on panel
No disconnect, convenience outlet option
Recommended service clearance
Minimum clearance
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
Side condensate drain is used
Minimum clearance
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
C08337
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 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 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.
6 516 01 3700 00
Specifications are subject to change without notice.
Table 1 – Operating Weights
RHX
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)
UNITS LB (KG) UNITS LB (KG) UNITS LB (KG)
036 048 060
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.
MAXIMUM ALLOWABLE
DIFFERENCE IN. (MM)
A-B
0.5” (13)
B-C
1.0” (25)
A-C
1.0” (25)
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.
516 01 3700 00 7
Specifications are subject to change without notice.
1-3/4"
[44.4]
(004-007)
B
ACCESSORY CONVENIENCE
OUTLET WIRING CONNECTOR
FITTING
1/2" [12.7] NPT 1/2" [12.7] NPT
CONTROL WIRING
FITTING
3/4" [19] NPT
POWER WIRING
1/2" [12.7] NPTCRRFCURB002A01
THRU THE CURB
CRBTMPWR003A01 THRU THE BOTTOM
CRBTMPWR001A01 3/4" [19] NPT
CONNECTOR PKG. ACC. GAS CONNECTION TYPE GAS FITTING
1-3/4"
[44.5]
11 3/4"[298.5] WIDE
INSULATED DECK PANELS
1.00"
[25.4]
"A"
SEE NOTE #2
2-3/8"
[61]
1' 4-13/16"
[427] INSIDE
8 9/16"[217.5] WIDE
INSULATED DECK PANEL
GAS SERVICE PLATE
THRU THE CURB
1-3/4"
[44.4]
E-E
SCALE 0.250
SECTION
DRILL HOLE
2" [50.8] @
ASSEMBLY (IF
REQUIRED)
(SEE NOTE #8)
RETURN AIR
1-3/4"
[44.5]
SUPPLY AIR
[1711.3]
5' 7-3/8"
"A"
NAIL (FIELD SUPPLIED)
TYPICAL (4) SIDES
UNIT
[944.6]
3'-1 3/16"
SEE VIEW "B"
ROOFING FELT
COUNTER FLASHING
(FIELD SUPPLIED)
7/16"
[11]
CURB ASY, ROOF
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.
1041738
TOLERANCES ON:
AUTHORIZATION NUMBER TITLE
DIMENSIONS ARE IN INCHES
----
UNLESS OTHERWISE SPECIFIED
1 DEC 2 DEC 3 DEC ANG
PRODUCTION
CERTIFIED DRAWING
---
MATERIAL
DRAWING RELEASE LEVEL:
THIRD ANGLE
PROJECTION
ROOFING MATERIAL
(FIELD SUPPLIED)
CANT STRIP
(FIELD SUPPLIED)
(FIELD SUPPLIED)
RIGID INSULATION
SHEET 5 OF 5
48TC400427
SIZE DRAWING NUMBER REV
D
-
-
-
DRAFTER CHECKER
ENGINEERING MANUFACTURING
-
MMC 06/17/11 - -
-
T-005, Y-002
WEIGHT:
- PURCH - N/A MMC
ENGINEERING REQUIREMENTS
SURFACE FINISH MFG/PURCH MODEL (INTERNAL USE ONLY) NEXT DRAWING SCALE DISTRIBUTION
ECN NO.APP'DCHK'DBYDATEREVISION RECORDREV
1067898--MMC04/22/13
(FIELD SUPPLIED)
DUCT
GASKET
(FIELD SUPPLIED)
(SUPPLIED WITH CURB)
OVERALL DIM. 5'-7 3/8" WAS 5'-7 7/8; 18GA
MATERIAL WA 16 GA.; NAIL FIELD SUPPLIED WAS
WITH CURB
A
70.87"
[1800.2]
VIEW "B"
CORNER DETAIL
32.19"
[817.6]
E
E
13.78"
[350.0]
3.00"
20.41"
1.75"
[76.2]
[518.3]
[44.5]
40.69"
[1033.5]
SUPPLY AIR RETURN AIR
1/4"
[7.0]
[115.5]
4 9/16"
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.
A
14"
ROOF CURB
ACCESSORY #
CRRFCURB001A01
[356]
24"
[610]
11.96"
5.42"
[303.8]
[137.7]
21.74"
[552.2]
4.96"
[126.0]
RETURN AIR
OPENING
1/3/4"[44.5]
15.19"
[385.8]
21.84"
3.00"
[554.7]
[76.2]
16.03"
[407.2]
SUPPLY AIR
OPENING
14.00"
[355.6]
C13310
Fig. 4 -- Roof Curb Details
8 516 01 3700 00
Specifications are subject to change without notice.
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