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 . 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.

!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.

!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.

!CAUTION

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.

2

Specifications are subject to change without notice.

516 01 3700 00

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

R

H

X

0

3

6

H

D

A

A

0

A

A

A

Position Number

1

2

3

4

5

6

7

0

9

10

11

12

13

14

R = Rooftop

Type

H = Heat Pump

X= Standard 14 SEER Efficiency

Efficiency

036 = 3 Tons

048 = 4 Tons

060 = 5 Tons

Nominal Cooling Capacity

K = 208/230−1−60

H = 208/230−3−60

L = 460−3−60

S = 575−3−60

Voltage

0 = No Heat (Field Installed electric heaters available)

Heating Capacity

A = Standard Motor

B = High Static Motor

C = Medium Static Motor

X = Direct Drive ECM

Motor Option (Indoor Fan)

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

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)

Condenser / Evaporator Coil Configuration

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.

1Combinations of FIOPS are available.

C14287

516 01 3700 00

Specifications are subject to change without notice.

3

		C14288
	Fig. 1 - Unit Dimensional Drawing
4	Specifications are subject to change without notice.	516 01 3700 00

C14289

Fig. 1 - Unit Dimensional Drawing (cont.)

516 01 3700 00

Specifications are subject to change without notice.

5

C

D

B

A

C08337

	LOCATION	DIMENSION		CONDITION
		48	---in (1219 mm)	Unit disconnect is mounted on panel
	A	18	---in (457 mm)	No disconnect, convenience outlet option
		18	---in (457) mm	Recommended service clearance
		12	---in (305 mm)	Minimum clearance
		42	---in (1067 mm)	Surface behind servicer is grounded (e.g., metal, masonry wall)
	B	36---in (914 mm)		Surface behind servicer is electrically non---conductive (e.g., wood, fiberglass)
		Special		Check sources of flue products within 10---ft of unit fresh air intake hood
	C	36	---in (914 mm)	Side condensate drain is used
		18	---in (457 mm)	Minimum clearance
		42	---in (1067 mm)	Surface behind servicer is grounded (e.g., metal, masonry wall, another unit)
	D	36---in (914 mm)		Surface behind servicer is electrically non---conductive (e.g., wood, fiberglass)
		Special		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 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

Specifications are subject to change without notice.

516 01 3700 00

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.

MAXIMUM ALLOWABLE

DIFFERENCE IN. (MM)

A-B	B-C	A-C
0.5” (13)	1.0” (25)	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

Specifications are subject to change without notice.

7

8

Specifications	4 .Fig
subject are	Roof -
notice without change to	Details Curb
.

00 3700 01 516

C13310

ROOF CURB

A

ACCESSORY #

CRRFCURB001A01

14"

[356]

CRRFCURB002A01

24"

[610]

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.

	CONNECTOR PKG. ACC.	GAS CONNECTION TYPE	GAS FITTING	POWER WIRING	CONTROL WIRING	ACCESSORY CONVENIENCE
				FITTING	FITTING	OUTLET WIRING CONNECTOR
	CRBTMPWR001A01	THRU THE CURB	3/4" [19] NPT
				3/4" [19] NPT	1/2" [12.7] NPT	1/2" [12.7] NPT
	CRBTMPWR003A01	THRU THE BOTTOM	1/2" [12.7] NPT

1-3/4" [44.5]

		1.00"
5.42"	11.96"	[25.4]
		11 3/4"[298.5] WIDE
[137.7]	[303.8]	INSULATED DECK PANELS
		"A"
21.74"
[552.2]
		8 9/16"[217.5] WIDE
		INSULATED DECK PANEL
		1-3/4"
		[44.4]

					SECTION E-E		1' 4-13/16"				SEE NOTE #2
4.96"						GAS SERVICE PLATE	[427] INSIDE				2-3/8"
			70.87"		SCALE 0.250
[126.0]						THRU THE CURB
			[1800.2]								[61]
						DRILL HOLE
						2" [50.8] @
						ASSEMBLY (IF
						REQUIRED)
		RETURN AIR				(SEE NOTE #8)
15.19"	1/3/4"[44.5]	OPENING
[385.8]	21.84"	E	E
3.00"
[76.2]	[554.7]
			32.19"
			[817.6]	VIEW "B"
				CORNER DETAIL
14.00"	SUPPLY AIR	16.03"				SUPPLY AIR		RETURN AIR			1-3/4"
[355.6]	OPENING	[407.2]									[44.4]
							1-3/4"
							[44.5]
1.75"	20.41"	3.00"		GASKET	UNIT	"A"
[44.5]
	[518.3]	[76.2]		(SUPPLIED WITH CURB)
		13.78"			NAIL (FIELD SUPPLIED)
		[350.0]									5' 7-3/8"
	40.69"
				DUCT	TYPICAL (4) SIDES						[1711.3]
	[1033.5]
				(FIELD SUPPLIED)	7/16"	3'-1 3/16"
					[11]
					COUNTER FLASHING	[944.6]
					(FIELD SUPPLIED)
					ROOFING FELT	SEE VIEW "B"
					(FIELD SUPPLIED)		CERTIFIED DRAWING
					CANT STRIP
1/4"
[7.0]					(FIELD SUPPLIED)	DRAWING RELEASE LEVEL:	PRODUCTION
4 9/16"					ROOFING MATERIAL
[115.5]
					(FIELD SUPPLIED)		UNLESS OTHERWISE SPECIFIED
						THIRD ANGLE	DIMENSIONS ARE IN INCHES
						PROJECTION		TOLERANCES ON:			THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN
							1 DEC	2 DEC	3 DEC	ANG	IS PROPRIETARY TO CARRIER CORPORATION AND SHALL NOT
						MATERIAL	-	-	-	-	BE USED OR DISCLOSED TO OTHERS, IN WHOLE OR IN PART,
											WITHOUT THE WRITTEN AUTHORIZATION OF CARRIER CORPORATION.

-

AUTHORIZATION NUMBER

TITLE

CURB ASY, ROOF

SUPPLY AIR

RETURN AIR

RIGID INSULATION

-

1041738

(FIELD SUPPLIED)

-

ENGINEERING

-

MANUFACTURING

-

(004-007)

ENGINEERING REQUIREMENTS

-

-

SIZE

DRAWING NUMBER

REV

T-005, Y-002

DRAFTER

CHECKER

D

48TC400427

OVERALL DIM. 5'-7 3/8" WAS 5'-7 7/8; 18GA

B

A

MATERIAL WA 16 GA.; NAIL FIELD SUPPLIED WAS

04/22/13

MMC

-

-

1067898

WEIGHT: -

MMC 06/17/11

-

-

SHEET 5 OF 5

WITH CURB

SURFACE FINISH

MFG/PURCH

MODEL (INTERNAL USE ONLY)

NEXT DRAWING

SCALE

DISTRIBUTION

REV

REVISION RECORD

DATE

BY

CHK'D

APP'D

ECN NO.

-

PURCH

-

N/A

MMC