Carrier 48PD06 Installation Instructions Manual

Brand: Carrier

Model: 48PD06

Type: Installation Instructions Manual

Irn ®

to the Expertg

Installation Instructions

IMPORTANT: This installation instruction contains basic unit

installation information including installation of field control

devices. For information on unit start-up, service, and operation,

refer to the unit Controls, Start-Up, Operation, Service, and

Troubleshooting Instructions also enclosed in the unit literature

packet. TABLE OF CONTENTS

PAGE

GENERAL ......................................... 1

SAFETY CONSIDERATIONS ......................... 1

INSTALLATION .................................... 2

Step 1 - Provide Unit Support ......................... 2

Step 2 - Rig and Place Unit ........................... 2

Step 3 - Field Fabricate Ductwork ...................... 9

Step 4 - Make Unit Duct Connections ................... 9

Step 5 - Install Flue Hood and Inlet Hood ................ 9

Step 6 - Install External Trap for Condensate Drain ....... 10

Step 7 - Orifice Change ............................. 11

Step 8 - Install Gas Piping ........................... 12

Step 9 - Make Electrical Connections .................. 12

Step 10 - Install Outdoor-Air Hoods

(Units with Economizers) .......................... 16

Step 11 - Install All Accessories ...................... 16

Step 12 - Configure Controls ........................ 16

GENERAL

The 48PD rooftop unit uses Puron ® (R-410A) refrigerant and

ComfortLink "_ DDC controls. It is intended to be used in either a

displacement ventilation or a single-zone variable air volume

application, The unit includes a factory installed variable capacity

compressor and variable frequency drive indoor fan motor. This

manual provides instruction for installation of the unit, Refer to

the unit Controls and Troubleshooting book for additional

information on configuring controls.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be

hazardous due to system pressure and electrical components. Only

trained and qualified service personnel should install, repair, or

service air-conditioning equipment.

Untrained personnel can perform the basic maintenance functions

of replacing filters. All other operations should be performed by

trained service personnel. When working on air-conditioning

equipment, observe precautions in the literature, tags and labels

attached to the unit, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves.

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, and

CAUTION. 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 a hazard

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.

ELECTRICALSHOCK HAZARD

Failure to follow this warning could result in personal

injury or death.

Before performing service or maintenance operations on

unit, always turn off main power to unit.

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this caution may result in personal injury

or equipment damage,

Puron ® (R-410A) refrigerant systems operate at higher

pressures than standard R-22 systems, Do not use R-22

service equipment or components on Puron refrigerant

equipment,

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal

injury, death and/or property damage.

1. Improper installation, adjustment, alteration, service,

or maintenance can cause property damage, personal

injury, or loss of life. Refer to the User's Information

Manual provided with this unit for more details.

2. Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any other

appliance.

What to do if you smell gas:

1. DO NOT try to light any appliance.

2. DO NOT touch any electrical switch, or use any

phone in your building.

3. IMMEDIATELY call your gas supplier from a

neighbor's phone. Follow the gas supplier's

instructions.

4. If you cannot reach your gas supplier, call the fire

department.

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal

injury or death.

Disconnect gas piping from unit when pressure testing at

pressure greater than 0.5 psig. Pressures greater than

0.5 psig will cause gas valve damage resulting in hazardous

condition. If gas valve is subjected to pressure greater than

0.5 psig, it must be replaced before use. When pressure

testing field-supplied gas piping at pressures of 0.5 psig or

less, a unit connected to such piping must be isolated by

closing the manual gas valve(s).

IMPORTANT: []nits have high ambient operating linfits. If linfits

are exceeded, the units will automatically lock the compressor out

of operation. Manual reset will be required to restart the

compressor.

INSTALLATION

Step 1-- Provide Unit Support

Roof Curb

Assemble or install accessory roof curb in accordance with

instructions shipped with this accessory. (See Fig. 1.) Install

insulation, cant strips, roofing, and counter flashing as shown.

Ductwork can be installed to roof curb before unit is set in place.

Ductwork must be attached to curb and not to the unit. Curb must

be level. This is necessary to permit unit drain to flmction properly.

[]nit leveling tolerance is _+ 1/16-in. per linear ft in any direction.

Refer to Accessory Roof Curb Installation Instructions for

additional information as required. When accessory roof curb is

used, unit may be installed on class A, B, or C roof covering

material. Carrier roof curb accessories are for flat roofs or slab

mounting.

IMPORTANT: The gasketing of the unit to the roof curb is critical

for a watertight seal. Install gasket with the roof curb as shown in

Fig. 1. Improperly @plied gasket can also result in air leaks and

poor unit performance. Do not slide unit to position on roof curb.

Alternate Unit Support

When a curb cannot be used, install unit on a non-combustible

surface. Support unit with sleepers, using unit curb support area. If

sleepers cannot be used, support long sides of unit with a nfinimum

of 3 equally spaced 4-in. x 4-in. pads on each side.

Step 2 -- Rig and Place Unit

Inspect unit for transportation damage. See Table 1 for physical

data. File any claim with transportation agency.

[]NIT DAMAGE HAZARD

Failure to follow this caution may result in equipment

damage.

All panels nmst be in place when rigging. []nit is not

designed for handling by fork truck.

Do not drop unit; keep upright. Use spreader bars over unit to

prevent sling or cable damage. Rollers may be used to move unit

across a roof. Level by using unit frame as a reference. Leveling

tolerance is -- 1/16-in. per linear ft in any direction. See Fig. 3 for

additional information and unit rigging weight.

R,wR._iB.

[663 O]

INSIDE

1'-6q/8"

146061

0-3"

[76.2]

0-3"

[76 21

11 3/16" 1

[284 6] 1

t , t

1 '-3-15/16 :'

[39611 0 3"

INSIDE [7621

]-Y/S"

[47 6]

TYP

[5924] _ _-_ [34443

RETURN A1R _

OPENING 0-7-Y/_6"

[1883]

t j

2" 3 5/i6"

_ i69441

4'-0-i/4"

_ [!2244] _

OUTSIDE

0 l' D-7/16"

518 4]

3-7/8"

[9841

SUPPLY AIR

OPENING 0-3' 6'_11-13/16"

7 [2128 1]

OUTSIDE

1" 5/i6" I 1'-1-9/16"

0-6"

15 9]

OP NIND FOR

ELECTRICAL

SERVICE

'IT.

SEE DETAIL

1/4"

6 41 "i_

DETAIL D

SCALE 11:32

CONNECTOR

%" ACCESSORY

PACKAGE

03-OY 1/2" NPT CRDASPLIOOSASO

UN[F SIZE .A I, [ROOF CURB

48PG, PD ACCESSORY

I 1' 2'1 [356] / CRRECURDSROAOO

$3-07 2" O:' [610] CRN[CURDDSRAOO

NOTES:

I ROOP CURS ACCESSOR_ IS SHIPPED UNASSEMSLED

2 INSULATED _ANELS,

S DIMENSIONS IN [ ] ARE IN MILLIMETERS

4 ROOF CURS GALVANIZED STEEL

5 ATTACH DUCTWORNTO CURS (FLANGE6 ON DUCT

REST ON CURD)

6 SERVICE CLEARANCE 4 H ON EACH SIDE

GAS SERVICE PIATE IS PART OF A SEPARATELY

SNIPPED ACCESSORY PACKAGE

GASN_T_L NAIL

S' T/1D" [11]_

_COUNTER PLASHING

(FIELD SUPPLIED)

ROOFING FELT

(FIELD SUPPLIED)

CANT STRIP

LD SUPPLIED)

ROOFiNG MATERIAL

(FIELD SUPPLIED)

RIGID INSULATION

(FIELD SUPPLIED)

TYPICAL 4 SIDES

3'-1 31/D2"

GAS _ [964 3]

S[RVICE_ 0'-2 3/8

X rl610] [I

1/2" 8

DE-AIL

SCALE 11:32

GAS SERVICE PLATE CAN S[ USED WITN EITHER

ACCESSORY ROOFCURB

BOIT HEADS TO BE ON INSIDE OF FLANGE

CLEARANCE IS [11] 0-0-7/i6" TYP ALL CORNERS

DIRECTION OF AIRPLOW

SEENOTE9 i _ICE

NOTE 7& 8

SEE NOIE

Fig. 1-Roof Curb Details

C08492

DiRECNiON OF AIR FLOW

NOTES:

I WEIGHIS SHOWN ARE FOR 48PG (HI HEAT) UNIT

WITH ALUMINUM COiLS,AND STANDARD DRIVE

FOR WEIGHTS Oi OP]IONAL EQUIPMENT CONSULT

PRODUCT DATA BOON

2 DO NOT LOCATE ADJACENT UNITS WiTH FLUE DISCHARGE

FACING ECONOMIZER INLET

3a MINIMUM CLEARANCE (LOCAL CODES OR JUSISD[CTiONS MAY PREVAIL):

FRONT 48 INCHES TO COMBUSTIBLE SURFACES (18 INCHES WHEN

USING ACCESSORY BLUE DISCHARGE DEFLECTOR)

b WHEN NO" USING ROOF CURB (I INCH) BOTTOM OF BASE DAN TO

COMBUSTIBLE SURFACES

c WHEN NOT USING ROOF CURB CO INCHES) TO BOTTOM OF BASE RAID 5 5116 '=

RIGHI SIDE,FRONT AND BACK SIDES (36 INCHES) EOR PROPER [IB4BI

CONDENSER AIRFLOW

d OVERHEAD (60 INCHES) TO ASSURE PROPER CONDENSER AIRFLOW

e BETWEEN UNITS, CONTROL BOX SIDE, 42 IN PER NEC

f BETWEEN UNIT AND UNGROUNDED SURFACE CONTROL BOX SIDE

(36 INCNES PER NED)

g BETWEEN UNI[ AND BLOCN OF CONCRETE WALL AND OTHER

GROUNDED SURFACES CONTROL BOX SIDE (42 INCHES) PER NEC

k CLEARANCE IN FRONT OE INDOOR MOTOR ACCESS FOR BLOWER SLED

REMOVAL 4"6"

i CLEARANCE FOR COMPL[[{ CONDENSATE PAN REMOVAL 4'6':

ON DNI-S W]-H ECONOMIZER ALLOW 3'6" FROM LENT SiDE

FOR SERVICE ACCESS TO ECONOMIZER

m HORIZONTAL SUPPLY AND RETDRN,(O INCHES)

4 DOWN SHOT DUCTS DESIGNED TO BE ATTACHED TO ACCESSORY

ROOF CURB ONLY IF UNIT IS MOUNTED SIDE SUPPLY, IT

IS RECOMMENDED THE DUCTS MUST BE SUPPORTED BY

CROSS BRACES AS DONE ON ACCESSORY ROOF CURB

5 D!MENSIONS IN { ] ARE IN MILLIMETERS OR KILOGRAMS

6 WiTH THE EXCEPTION OR CLEARANCE FOR THE DONDFNSER COl ,

COMBUSTIBLE SURFACES AND THE DAMPER/POWER EXHAUST AS

S_ATED IN NOTE N2 A REMOVABLE FENCE OR BARRICADE

REQUIRES NO CLEARANCE

DiMENSiONS ARE [ROM OUTSIDE 0[ BABE RAiL

ALLOW O" 5116 [8] ON EACH SIDE FOR TOP COVER DRiP EDGE

UNIIS MAY BE INSTALLED ON COMBUSTIBLE FLOORS WADE FROW

CLASS A,B,C ROOR COVERING MATERIAL IF SET ON BASE RAILS

CENTER OF GRAVITY

DISCONNECT

CONVENIENCE OUTLET

2' B /2"

[67341

B/4" DIA [_9 1]-

POWERSUPPLY

KNOCNOUT

(THRU CURB)

1' B 1/16"

CORNER[_8s4!__6 w_u_'_'_

-- I

_I _[:iToi:: --J

i RETURN AIRi

I OPENING 1

I V ERBT,I C6AL 1

[1066 8] I

.... J

i, ALT CONDENSATE

DRA]N 314" 14 NPT

5BIB"

[44T 9] r'_

SUPPLY AiR

OPENING I

VERTICAL I .

I' 11 l/B"

1596 O1

CORNERDI I - - H_- \cOR_c l

/ _ B 7/o:' _1 _ \ _ I B5/B"

{2255] T

_ I X _ALT GAS I

(INCLUDED WITM UNIt) 2"-1-7/16"

B' 37!8" _ [B456]

_- 110148] _ AIR iNTAKE I

3" B 5/16" HOOD

{10741] (INCLUDED

8' 10 11/16" WITH UNIT) I

[27089] 4

DO NOT

AREA BELOW

STD UNIT CORNER i CORNER CORNER CORNER

UNI WEIGHT WEIGHT (A):WEIGHT (B) WEIGHT (C) WEIGHT (D)

LBsiNG ND LBBiNG LBS NG

48PGO3 774 i B51 170 77 1142 65 210 i 95 251 114

48PGO4 786 i 357 173 78 i145 66 2/4 i _'_ BBB

48PGO5 901 i 409 198 90 :166 75 245 i 111 293 133

921 I 418 202 92 1169 7T 250 i113 299 136

......9"61 I 436 211 95 i177 80 2611118, 3i2 i42

4BPOO5 901 _ 409 198 90 i166 75 245:111 293 i33

48PDO6 921 i 418 202 92 :169 77 250 i 11B 299 136

DRAIN !

CONDENSATE

ACCESS

_COVER

i i

[ 5 i/B"

{139 5]

B !/8"

[79 6]

OUTSIDE

PANEL

I" B BIB"

[365 2]

NACR DREAMER

IOPTIONS)

2' 4:1/16"

5-1/2"

[iBgB] [333333

2" 1-15/1B"

{6B86}

B-9/16" _ 4'-0o11/16 '<

{641] [12371]

INSIDE RAILS

LEFT

SIDE

(HOO E'Yii!D!:i£77 ' : :=...................m<;"B?'O' l: 7!.... O'U B",

k,/11:1-: tlt '

, _;_,A 1-I1 CONDENSERcoin ,,Do, i

±_ ORUNIT / .,- 'b_k_" .'_=1==_,_"_ '_ ..,. . . r < c! / :363 1] '_

J_ /I '_ ]oo \, _ _: :::: 5:: _ LFy;;;;_

:/_}u[,(: \ %::: \ V iL

BAROMETRIC REU[EF MOOD X_ [2889 _ _ .... _ t--,E:-....... RIGHT

(INCLUDED W TH UNIT) _ N x ACCESS DOOR

PW_ XHA'T _ A _:OTRONO ,ll. _

0 E US 2_ m COMPRESSOR '_ 4 15/16 '< _<

OPERATING POSITION _ RETURN ACCESS OOOR SUPPLY [117 8] _ DO

_ORT:ON_ _s AIN' AIR FRONT SIDE _

7' O SliD" _ SECTION A-A

L_sss _2

INS:DE RAILS oo

Fig. 2 -Base Unit Dimensions

CO8493

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.

UNIT IA[B[C[D[ E [ MAX. WEIGHT

DE;AlL A._/_Lr_t. I _ g _ UNIT ON ROOF CURB

DET IL fA __--_ _ J__DUCT END

Fig. 3 - Rigging Label

C08433

Positioninu

Maintain clearance, per Fig. 2, around and above unit to provide

minimum distance from combustible materials, proper airflow, and

service access.

Do not install unit in an indoor location. Do not locate air inlets

near exhaust vents or other sources of contaminated air. For proper

unit operation, adequate combustion and ventilation air must be

provided in accordance with Section 5.3 (Air for Combustion and

Ventilation) of the National Fuel Gas Code, ANSI Z223.1

(American National Standards Institute).

Although unit is weatherproof, guard against water from higher

level runoff and overhangs.

Locate mechanical draft system flue assembly at least 4 fl from any

opening through which combustion products could enter the

building, and at least 4 fl from any adjacent building (or per local

codes). Locate unit at least 10 fl away from any adjacent unit.

When unit is located adjacent to public walkways, flue assembly

must be at least 7 fl above grade.

Roof Mount

Check building codes for weight distribution requirements, Unit

operating weight is shown in Table 1.

Installation On Roof Curb

The 48PD units are designed to fit on the accessory full perimeter

curb. Correct placement of the unit onto the curb is critical to

proper operating performance. To aid in correct positioning, place

unit on roof curb to maintain 1/4-in. gap between the inside of rail

and roof curb on long sides and a 1/2-in. gap between the inside of

rail and roof curb on both duct and condenser ends. Refer to Fig. 1

and 2 to assure proper duct opening alignment.

NOTE: Before positioning unit onto curb, refer to Step 6 - Install

External Trap for Condensate Drain concerning bottom drain

connection plug.

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in damage to unit.

Do not slide unit into position when it is sitting on the curb.

Curb gasketing material may be damaged and leaks may

result.

Slab Mount (Horizontal Units Only)

Provide a level concrete slab that extends aminimum of 6-in.

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.

Table 1 -Physical Data (Cooling)

BASE UNIT 48PD

NOMINAL CAPACITY (Tons)

OPERATING WEIGHT (Ibs)

Unit*

Economizer

Vertical/Horizontal

Roof Curb

14-in./24-in.

REFRIGERANT SYSTEM

Refrigerant

Metering Device

#Circuits/# Compressors

Charge (Ibs)

High Pressure Switch Cutout (psig)

High Pressure Switch Auto Reset (psig)

COMPRESSOR

Oil Type

Oil (oz)

CONDENSER COIL

Circuit

Rows/FPI

Face Area (sq ft)

CONDENSER FAN (type)

Quantity/Diameter (in.)

Nominal Cfm (Total, all fans)

Motor Hp/Watts

Nominal Rpm

EVAPORATOR COIL

Standard Coil Tube/Fins

Rows/FPI

Face Area (sq ft)

Condensate Drain Connection Size (in.)

EVAPORATOR FAN (See motor and drive tables)

Fan Quantity/Type

Belt Size (in.)

Blower Pulley Type

Fan Bearing Type

Maximum Fan RPM

FILTERS

Unit Filter Type

Unit Filter Qty/Size (in.)

Economizer OA Inlet Screen Qty/Size (in.)

901

40/50

122/184

Puron(s) (R-410A) Refrigerant

Balanced- Port TXV with Bypass

1/1

14.5

660-- -10

505 -- -20

Outer/Inner

2/17

12.6

1/24

6500

0.125/227

825

Cu/AI

2/15

9.3

3/4 NPT

1/Belt

12x9

Fixed

Ball - Concentric Lock

2000

Copeland Digital Scroll

Copeland 3MA

Round Tube Plate Fin

Propeller

Round Tube Plate Fin

Centrifugal

921

40/50

122/184

1/1

16.0

660-- -10

505 -- -20

Outer/Inner

2/17

12.6

1/24

6500

0.25/651

1100

Cu/AI

3/15

9.3

3/4 NPT

Fiberglass fill, non-pleated

4/16x20x2

1/25.8 x 16.4

1/Belt

12x9

Fixed

Ball - Concentric Lock

2000

Fiberglass fill, non-pleated

4/16x20x2

1/25.8 x 16.4

Aluminum evaporator coil/Aluminum condenser coil with low heat

Table 2-Physical Data (Heating)

BASE UNIT 48PD

GAS HEAT SECTION

# of Gas Valves

Gas Supply Line Pressure Range (in. wg)

Gas Supply Line Pressure Range (PSIG)

Manifold Pressure

Natural Gas Vertical/Horizontal (in. wg)

Liquid Propane Vertical/Horizontal (in. wg)

Thermostat Heat Anticipator Setting (amps)

Field Gas Connection Size (in.)

Natural Gas

#of burners (total)

Rollout switch opens/closes (deg F)

Temperature Rise Min - Max (deg F)

Burner Orifice Diameter (in./drill size)**

#of burners (total)

Rollout switch opens/closes (deg F)

Temperature Rise Min - Max (deg F)

Burner Orifice Diameter (in./drill size)**

#of burners (total)

Rollout switch opens/closes (deg F)

Temperature Rise Min - Max (deg F)

Burner Orifice Diameter (in./drill size)**

Liquid Propane

_, #of burners (total)

_[I I Rollout switch opens/closes (deg F)

51 Temperature Rise Min - Max (deg F)

-, Burner Orifice Diameter (in./drill size)**

,_l #of burners (total)

-' Rollout switch opens/closes (deg F)

_,! Temperature Rise Min - Max (deg F)

-_l Burner Orifice Diameter (in./drill size)**

_, #of burners (total)

_[I

._! Rollout switch opens/closes (deg F)

_i Temperature Rise Min - Max (deg F)

.=[ Burner Orifice Diameter (in./drill size)**

** Forapplications less than 2000 ft elevation.

1- PDunit does not support the use of conventional Y1/W1thermostat

5.0-13.0

0.1 80-- 0.469

3.50/3.50

NA1-

1/2

195/115

25-70

0.0820/45

195/115

20-60

0.0820/45

225/175

30-75

0.0820/45

195/115

25-70

0.0650/52

195/115

20-60

0.0650/52

225/175

30-75

0.0650/52

5.0-13.0

0.180- 0.469

3.50/3.50

NAt

1/2

195/115

20-60

0.0820/45

225/175

30-75

0.0820/45

195/115

45-75

0.0820/45

195/115

20-60

0.0650/52

225/175

30-75

0.0650/52

195/115

45-75

0.0650/52

Table 3 - Fan and Motor Drive Data - Vertical Supply/Return

UNIT 48PD 05 08

VOLTAGE (volts) 208/230 and 460 208/230 and 460

LOW STATIC DRIVE OPTION

Motor HP 2.4 2.4

Motor Nominal RPM 1725 1725

Maximum Continuous BHP 2.0 2.0

Maximum Continuous Watts 2000 2000

Motor Frame Size 58HZ 58HZ

Motor shaft diameter (in.) 5/8 5/8

Motor Pulley Pitch Diameter Min - Max (in) 1.9 - 2.9 2.4 - 3.4

Fan RPM Range 598-910 890-978

Blower Pulley Pitch Diameter (in.) 5.5 8.0

Pulley center line distance (in.) 18.2-20.2 18.2-20.2

Belt Quantity /Type /Pitch Length (in.) 1 /AX48 /49.3 1 /AX48 /49.3

Speed change per turn - moveable pulley (RPM) 83 58

Moveable pulley maximum full turns 5 5

Factory Speed setting (RPM) 598 890

HIGH STATIC DRIVE OPTION

Motor HP 2.4 2.4

Motor Nominal RPM 1725 1725

Maximum Continuous BHP 2.0 2.0

Maximum Continuous Watts 2000 2000

Motor Frame Size 58HZ 58HZ

Motor shaft diameter (in.) 5/8 5/8

Motor Pulley Pitch Diameter Min - Max (in) 2.4 - 3.4 2.8 - 3.8

Fan RPM Range 828-1173 929-1281

Blower Pulley Pitch Diameter (in.) 5.0 5.2

Pulley center line distance (in.) 18.2-20.2 18.2-20.2

Belt Quantity /Type /Pitch Length (in.) 1 /AX48 /49.3 1 /AX48 /49.3

Speed change per turn - moveable pulley (RPM) 89 87

Moveable pulley maximum full turns 5 5

Factory Speed setting (RPM) 828 929

Table 4-Fan and Motor Drive Data - Horizontal Supply/Return

UNIT 48PD 05 08

VOLTAGE (volts) 208/230 and 480 208/230 and 480

LOW STATIC DRIVE OPTION

Motor HP 2.4 2.4

Motor Nominal RPM 1725 1725

Maximum Continuous BHP 2.0 2.0

Maximum Continuous Watts 2000 2000

Motor Frame Size 58HZ 58HZ

Motor shaft diameter (in.) 5/8 5/8

Motor Pulley Pitch Diameter Min - Max (in) 1.9 - 2.9 2.4 - 3.4

Fan RPM Range 598-910 890-978

Blower Pulley Pitch Diameter (in.) 5.5 8.0

Pulley center line distance (in.) 18.2-20.2 18.2-20.2

Belt Quantity /Type /Pitch Length (in.) 1 /AX48 /49.3 1 /AX48 /49.3

Speed change per turn - moveable pulley (RPM) 83 58

Moveable pulley maximum full turns 5 5

Factory Speed setting (RPM) 598 890

HIGH STATIC DRIVE OPTION

Motor HP 2.4 2.4

Motor Nominal RPM 1725 1725

Maximum Continuous BHP 2.0 2.0

Maximum Continuous Watts 2000 2000

Motor Frame Size 58HZ 58HZ

Motor shaft diameter (in.) 5/8 5/8

Motor Pulley Pitch Diameter Min - Max (in) 2.4 - 3.4 2.8 - 3.8

Fan RPM Range 828-1173 929-1281

Blower Pulley Pitch Diameter (in.) 5.0 5.2

Pulley center line distance (in.) 18.2-20.2 18.2-20.2

Belt Quantity /Type /Pitch Length (in.) 1 /AX48 /49.3 1 /AX48 /49.3

Speed change per turn - moveable pulley (RPM) 89 87

Moveable pulley maximum full turns 5 5

Factory Speed setting (RPM) 828 929

Step 3-- Field Fabricate Ductwork

On vertical units, secure all ducts to roof curb and building

structure. Do not connect ductwork to unit. For horizontal

applications, field-supplied flanges should be attached to

horizontal discharge openings and all ductwork secured to the

flanges. Insulate and weatherproof all external ductwork, joints,

and roof openings with counter flashing and mastic in accordance

with applicable codes.

Ducts passing through an unconditioned space 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. Cabinet

return-air static pressure (a negative condition) shall not exceed

0.35-in.wg with economizer or 0.45-in.wg without economizer.

These units are designed for a minimum continuous return air

temperature in heating of 50°F (dry bulb), or an intermittent

operation down to 45°F (dry bulb), such as when used with a night

set-back thermostat.

To operate at lower return-air temperatures, a field-supplied

outdoor-air temperature control must be used to initiate both stages

of heat when the temperature is below 45°F. Indoor comfort may

be compromised when these lower air temperatures are used with

insufficient heating temperature rise.

Step 4 -- Make Unit Duct Connections

Vertical Supply/Return Configuration

Unit is shipped in vertical supply/return configuration. Ductwork

openings are shown in Fig. 1 and 2. Attach the ductwork to the

roof curb. Do not attach duct directly to the unit.

PERSONAL INJURY HAZARD

Failure to follow this caution may result in personal injury.

For vertical supply and return units, tools or parts could

drop into ductwork and cause an injury. Install a 90 ° turn

in the return ductwork between the unit and the conditioned

space. If a 90 ° elbow cannot be installed, then a grille of

sufficient strength and density should be installed to prevent

objects from falling into the conditioned space.

Horizontal Supply/Return Applications

Unit can be field-converted from vertical supply/return to

horizontal supply/return. Remove all screws securing horizontal

duct covers to duct panel. Save panels. Install duct covers in the

vertical duct openings in the basepan with the insulation side up.

Covers will drop into openings and can be secured using

field-supplied self-tapping screws. Ductwork can be attached to

duct flanges provided on unit. When securing ductwork to unit, do

not drill in area below bead or above top edge of duct opening.

Step 5 -- Install Flue Hood and Inlet Hood

Flue hood (smaller hood), inlet hood (larger hood), and screens are

shipped inside the unit in the gas section. To install, open the heat

section door. The flue hood is attached to the heat section panel

from the outside using the screws provided. (See Fig. 4 and 5.)

_ INLET

HOOD

GAS SECTION FLUE

ACCESS DOOR HOOD

Fig. 4- Flue and Inlet Hood

C06257

The inlet hood is installed by inserting the hood through the back

of the heat panel. Attach the hood by inserting the screws provided

through the clearance holes in the heat panel and into the intake

hood.

NOTE: When properly installed, the flue hood will line up with

the combustion fan housing. (See Fig. 6.)

ELECTRICAL

OPTION_NEL

CONTROLEOX

AND

COMPRESSOR

'\\

iNDOOR MOTOR

J ACCESSDOOR

SCREEN

(H_DDEN)

\\ CONDENSER COIL

ACCESS PANEL

BASEPAN CONNECTIONS

ACCESS PANEL

Fig. 5 -Panel and Filter Locations

C06255

///

HEAT EXCHANGER

SECTION

Step 6-- Install External Trap for Condensate

Drain

Fig. 6 - Typical Gas Heating Section

The unit's 3/4-in. condensate drain connections are located on the

bottom and side of the unit. Unit discharge connections do not

determine the use of drain connections; either drain connection can

be used with vertical or horizontal applications. See Fig. 2 for

locations.

When using the standard side drain connection, make sure the plug

(red) in the alternate bottom connection is tight before installing the

unit. (See Fig. 7.)

To use the bottom drain connection for a roof curb installation,

relocate the factory-installed plug (red) from the bottom

INDUCED connection to the side connection. A 1/2-in. socket extension can

/DRAFT be used to remove the plug. (See Fig. 7.) The piping for the

MOTOR condensate drain and external trapcan be completed after the unit

-COMBUSTION is in place.

FANHOUSING All units must have an external trap for condensate drainage. Install

a trap at least 4-in. 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 fl of run. Do not use a pipe size

MAIN GAS

/ VALVE smaller than the unit connection (3/4-in.). (See Fig. 8 and 9.)

'\,' The 48PD units are provided with a removable condensate pan for

MAINBURNERSECTION ease of cleaning. Refer to Maintenance section in Controls and

c06258 Troubleshooting book for more information. It is recommended

that a union be placed between the unit and condensate drainage to

ease the removal of the pan during servicing. Adequate clearance

should be allowed if removal of condensate pan is required. Allow

54-in. between condensate pan access panel and any obstruction

for complete removal.

BOTTOM DRAIN

PLUG

SIDE DRAIN

PLUG

\\\\

\\\\\\\\\\\

C06233

Fig. 7 - Condensate Drain Pan

OPTIONAL UNIONS

TO ALLOW FORCONDENSATE --.._

PAN REMOVAL _

CONDENSATE

PAN ACCESS

PANEL

Fig. 8 - External Trap for Condensate Drain

C06234

MINIMUM PITCH

ONE IN. PER BASE

10 FT OF LiNE \ RAiL

\ OPEN

VENT __

TO ROOF I I _ _

DRAIN -- -

_=_ DRAIN PLUG

SEE

NOTE

_..ROOF

I CURB

NOTE: Trap should be deep enough to offset maximum unit static difference.

A 4-in. trap is recommended.

Fig. 9 - Condensate Drain Piping Details

C06291

Step 7 -- Orifice Change

This unit is factory assembled for heating operation using natural

gas at an elevation from sea level to 2000 ft. This unit uses orifice

type LH32RFnnn, where "nnn" indicates the orifice size based on

drill size diameter in thousands of an inch.

High Elevation (Above 2000 It)

Consult the local gas utility company to deternfine if gas supply

has been de-rated for high altitude. If gas supply is not de-rated,

use accessory high altitude kit when installing this unit at an

elevation of 2000 to 7000 ft. For elevations above 7000 ft, refer to

Table 6 to identify the correct orifice size for the elevation. See

Table 7 for the number of orifices required for each unit size.

Purchase these orifices from your local Carrier dealer. Follow

instructions in accessory Installation Instructions to install the

correct orifices.

Table 5-Altitude Compensation*

ELEVATION (ft) NATURAL GAS ORIFICEt

O- 1,999 45

2,000 47

3,000 47

4,000 47

5,000 48

6,000 48

7,000 48

8,000 49

9,000 49

10,000 50

11,000 51

12,000 51

13,000 52

14,000 52

As the height above sea level increases, there is less oxygen per cubic

foot of air. Therefore, heat input rate should be reduced at higher altitudes.

Includes a 4% input reduction per each 1000 ft.

1- Orifices available through your Carrier dealer

Table 6-Orifice Quantity

UNIT 3 4 5 6 7

Low Heat (D/L) -- 3 3 4 4

Medium Heat (E/M) -- 4 4 6 6

High Heat (F/N) 3 6 6 8 8

Conversion to LP Gas

Use accessory LP gas conversion kit when converting this unit for

use with LP fuel usage for elevations up to 7000 ft. For elevations

above 7000 fl, refer to Table 7 to identify the correct orifice size for

the elevation. See Table 6 for the number of orifices required for

each unit size. Purchase these orifices from your local Carrier

dealer. Follow instructions in accessory Installation Instructions to

install the correct orifices.

Table 7 - LP Gas Conversion*

ELEVATION (ft) LP GAS ORIFICE 1

0-1,999 52

2,000 52

3,000 53

4,000 53

5,000 53

6,000 53

7,000 53

8,000 54

9,000 54

10,000 54

11,000 54

12,000 55

13,000 55

14,000 56

As the height above sea level increases, there is less oxygen per cubic

foot of air. Therefore, heat input rate should be reduced at higher altitudes.

Includes a 4% input reduction per each 1000 ft.

1- Orifices available through your Carrier dealer

Step 8-- Install Gas Piping

Unit is equipped for use with natural gas. Refer to local building

codes, or in the absence of local codes, to ANSI Z223.l-latest year

and addendum Z223.1A-latest year entitled HFGC. In Canada,

installation must be in accordance with the CANI.BI49.1 and

CANI.BI49.2 installation codes for gas burning appliances.

Support gas piping as shown in the table in Fig. 10. For example, a

3/4-in. gas piping must have one field-fabricated support beam

every 8 ft. Therefore, an 18-ft long gas pipe would have a

minimum of 3 support beams. See Fig. 10 for typical pipe guide

and locations of external manual gas shutoff valve.

Install field-supplied manual gas shutoff valve with a l/8-in. NPT

pressure tap for test gauge connection at unit. The pressure tap is

located on the gas manifold, adjacent to the gas valve. Field gas

piping must include sediment trap and union. (See Fig. 11.) Install

a field-supplied gas regulator.

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal

injury or death.

Do not pressure test gas supply while connected to unit.

Always disconnect before servicing.

IMPORTANT: Natural gas pressure at unit gas connection must

not be less than 5.0-in. wg or greater than 13.0-in.wg for all heat

sizes. Size the gas-supply piping for 0.5-in.wg maximum pressure

drop. Do not use supply pipe smaller than unit gas connection.

F 9" MINIMUMcLEXRANCE

"'_AS_"'-UNI_"T_1 FORPANELREMOVAL L

DRIPLEGPER NFGC

BASE ROOFCURB FIELD-FABRICATED

SUPPORT*

FROMGASMETER

LEGEND

NFGC iNational Fuel Gas Code

*Field supplied.

NOTE: Follow all local codes.

SPACING OF SUPPORTS

STEEL PIPE SPACING OF SUPPORTS

NOMINAL DIAMETER (in.) X DIMENSION (ft)

1/2 6

3/4or 1 8

11/4or larger 1O

C06115

Fig. 10 -Gas Piping Guide (With Accessory

Thru-the-Cab Service Connections)

MANUALSHUTOFF

(FIELDSU GAS

PRESSURETAP

(1/8"NPT PLUG)

_-- _ SEDIMENT TRAP

C06236

Fig. 11 - Field Gas Piping

Step 9 -- Make Electrical Connections

Field Power Supply

(For more details, refer to the Controls, Start-Up, Operation, and

Troubleshooting manual).

All 208/230v units are factory wired for 230v power supply. If the

208/230v unit is to be connected to a 208v power supply, the

transformers (TRANI and TRAN2) must be rewired by moving

the black wire with the l/4-in, female quick connector from the

230volt connection and moving to the 200volt l/4-in, male

terminal on the primary side of the transformer.

Refer to unit label diagram for additional information. Leads are

provided for field wire connections. Use UL (Underwriters

Laboratories) approved copper/aluminum connector.

When installing units, provide safety disconnect per NEC

(National Electrical Code) Article 440 or local codes. For

non-fused disconnects, size disconnect according to the sizing data

provided in the electrical data tables. If a fused disconnect is used,

determine the minimum size for the switch based on the disconnect

sizing data provided in the electrical data tables and then

coordinate the disconnect housing size to accommodate the

Maximum Overcurrent Protection (MOCP) device size as marked

on the unit informative plate. (See Table 9 and 10.)

All field wiring must comply with NEC and local codes. Size wire

based on MCA (Minimum Circuit Amps) on the unit informative

plate. See Fig. 12 for power wiring connection to the unit leads and

equipment ground.

Route power and ground lines through control box end panel or

unit basepan (see Fig. 2) to connections as shown on unit wiring

diagram and Fig. 12. Factory leads may be wired directly to the

disconnect.

[]NIT DAMAGE HAZARD

Failure to follow this caution may result in equipment

damage.

The correct power phasing is critical to the operation of the

scroll compressors. An incorrect phasing will result in

alarm being generated and compressor operation lockout.

Should this occur, power phase correction must be made to

the incoming power.

ELECTRICALSHOCK HAZARD

Failure to follow this warning could result in personal

iniury or death.

Unit cabinet must have an uninterrupted, unbroken

electrical ground to minimize the possibility of personal

iniury 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

(American National Standards Institute)/NFPA (National

Fire Protection Association), latest edition, and local

electrical codes. Do not use gas piping as an electrical

ground.

Field wiring must conform to temperature limitations for type "T"

wire. All field wiring must comply with NEC and local

requirements.

Operating voltage to compressor must be within voltage range

indicated on unit nameplate. On 3-phase units, voltages between

phases must be balanced within 2%.

[]nit failure as a result of operation on improper line voltage or

excessive phase imbalance constitutes abuse and may cause

damage to electrical components.

On"

oLU

----I

I FIELD

IPOWER

I WIRING

I-

POWER

C.A1

EQUIPGND

LEGEND

C.A1 -- Compressor Contactor (A1)

EQUIP -- Equipment

GND -- Ground

NEC -- National Electrical Code

NOTE: The maximum wire size for C.A1 is 2/0.

Fig. 12 - Field Power Wiring Connections

C06237

Field Control Wiring

Unit can be controlled with aCarrier-approved accessory space

temperature sensor. Install sensor according to the installation

instructions included with accessory. Locate space temperature

sensor on a solid interior wall in the conditioned space to sense

average temperature. The 48PD unit is not compatible with a

conventional YI/WI thermostat.

NOTE: Use 20 AWG (American Wire Gauge) wire to connect the

sensor to the controller. The wire is suitable for distances of up to

500 ft. Use a three-conductor shielded cable for the sensor and

set-point adjustment connections. The standard CCN

communication cable can be used. If the set-point adjustment

(slide bar) is not required, then an unshielded, 18 or 20 AWG

(American Wire Gauge), two-conductor, twisted pair cable can be

used.

Route space temperature sensor cable or equivalent single leads of

colored wire from sensor terminals through conduit into unit to

low-voltage connections as shown on unit label wiring diagram

and in Fig. 13.

LOOP POWERED

(24vd¢)

I I

HUMIDITY SENSOR OR HUMIDISTAT SPADE SENSOR

Fig. 13 -Low Voltage Terminal Board - Temperature and Humidity Control Wiring

C08434

Humidity Control

The 48PD unit can be used with aCarrier accessory humidistat

switch output (HL38MG029 or TSTATCCPLH01-B) in

conjunction with the space temperature sensor. The humidistat

switch is anormally open switch that closes upon arise in space

humidity, above the setpoint value.

Upon a humidistat call, the supply air temperature is lowered to

produce a colder evaporator coil and lower dew point temperature.

When humidistat is satisfied, the supply air temperature is reset to

the original supply air temperature setpoint.

Install the humidity control device according to the installation

instructions included with the accessory. Locate the device on a

solid interior wall in the conditioned space to sense average

humidity. General humidistat and humidity sensor wiring

connections are shown in Fig. 13.

Configuration of the unit control is required to specify the control

input type before unit operation. Refer to the Controls, Start-Up,

Operation and Troubleshooting manual for configuration.

NOMINAL VOLTAGE

48PD POWER RANGE

UNIT SUPPLY

SIZE V-Ph-Hz Min Max

208/230-3-60 187 253

460-3-60 414 506

208/230-3-60 187 253

460-3-60 414 506

Table 8 - Electrical Data -Units Without Optional Convenience Outlet

COMPRESSOR OFM COMBUST IFM POWER SUPPLY

FAN Conv PWR

FLA MOTOR Outlet EXH

RLA LRA Qty (ca) FLA FLA TYPE FLA MCA MOCPI-

STD 5.2 26.3/26.3 40/40

ALT 5.2 26.3/26.3 40/40

16.1 110 1 1.0 0.52 none STD 5.2 27.7/27.7 40/40

1.4 ALT 5.2 27.7/27.7 40/40

STD 2.6 10.9 15

ALT 2.6 10.9 15

6.2 52 1 0.5 0.30 none STD 2.6 11.5 15

0.6 ALT 2.6 11.5 15

STD 5.2 29.1/29.1 45/45

ALT 5.2 29.1/29.1 45/45

17.9 110 1 1.5 0.52 none STD 5.2 30.5/30.5 45/45

1.4 ALT 5.2 30.5/30.5 45/45

STD 2.6 13.2 20

ALT 2.6 13.2 20

7.8 52 1 0.8 0.30 none STD 2.6 13.8 20

0.6 ALT 2.6 13.8 20

DISCONNECT

SIZE

FLA LRA

26/26 142/142

27/27 144/144

11 68

11 69

28/28 143/143

30/30 145/145

13 69

14 70

Table 9 - Electrical Data -Units With Optional Convenience Outlet

NOMINAL VOLTAGE

48PD POWER RANGE

UNIT SUPPLY

SIZE V-Ph-Hz Min Max

208/230-3-60 187 253

460-3-60 414 506

208/230-3-60 187 253

460-3-60 414 506

COMPRESSOR OFM COMBUST. IFM POWER SUPPLY

FAN Conv PWR

FLA MOTOR Outlet EXH

RLA LRA Qty (ca) FLA FLA TYPE FLA MCA MOCPI

STD 5.2 31.1/31.1 45/45

ALT 5.2 31.1/31.1 45/45

16.1 110 1 1.0 0.52 YES STD 5.2 32.5/32.5 45/45

1.4 ALT 5.2 32.5/32.5 45/45

STD 2.6 13.1 15

ALT 2.6 13.1 15

6.2 52 1 0.5 0.30 YES STD 2.6 13.7 20

0.6 ALT 2.6 13.7 20

STD 5.2 33.9/33.9 50/50

ALT 5.2 33.9/33.9 50/50

17.9 110 1 1.5 0.52 YES 1.4 STD 5.2 35.3/35.3 50/50

ALT 5.2 35.3/35.3 50/50

- STD 2.6 15.4 20

ALT 2.6 15.4 20

7.8 52 1 0.8 0.30 YES 0.6 STD 2.6 16.0 20

ALT 2.6 16.0 20

DISCONNECT

SIZE

FLA LRA

31/31 147/147

33/33 149/149

13 70

14 71

34/34 148/148

35/35 150/150

15 71

16 72

LEGEND

FLA - Full Load Amps

HACR - Heating, Air Conditioning and Refrigeration

IFM - Indoor (Evaporator) Fan Motor

LRA - Locked Rotor Amps

MCA - Minimum Circuit Amps

MOCP - Maximum Overcurrent Protection

NEC - National Electrical Code

OFM - Outdoor (Condenser) Fan Motor

RLA - Rated Load Amps

t Fuse or Breaker

NOTES:

1. In compliance with NEC requirements for muttimotor and combination toad equipment (refer

to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or

HACR breaker. Canadian 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 percentage 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

227

Determine maximum deviation from average voltage.

(AB) 227 224 = 3 v

(BC) 231 227 = 4 v

(AC) 227 226 = 1 v

Maximum deviation is 4 v.

Determine percent of voltage imbalance.

% Voltage Imbalance =100 x 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.

Step 10 -- Install Outdoor Air Hoods

(Units With Economizer)

Perform the following procedure to install the outdoor-air hoods:

1. Economizer and barometric relief hoods are located in the

condenser section under the slanted coil for shipping. (See

Fig. 14.) Barometric relief/power exhaust hood is shipped

inside of economizer hood. Remove screws that secure the

wooden rails of the hood assemblies to the unit. Save

screws. Slide complete assembly from condenser section.

2. Remove the screws that secure the economizer and

barometric relief/power exhaust hoods to the wooden

railing. Discard or recycle wooden rails. Save screws.

NOTE: The barometric relief damper is secured to the economizer

panel for shipping.

DO NOT THROW THIS PANEL AWAY!

3. Remove the screw holding the barometric relief damper to

the panel. Damper should be free to swing open during

operation. (See Fig. 15.)

DO NOT THROW THIS PANEL AWAY!

4. Hang the barometric relief/power exhaust hood on the

mounting flange on the economizer panel. Secure hood to

panel with screws saved from Step 2. (See Fig. 15 and 16 0

5. Align hole in flange of economizer panel with left edge of

hood. Hang economizer hood on the top flange of the

economizer panel by rotating hood until top flange of the

economizer hood engages the bent flange on the

economizer panel. Rotate hood until hood is flush with the

economizer panel. Hood will support itself from flange.

Align holes in hood with holes in panel and secure hood to

panel with screws saved from Step 2. (See Fig. 15 and 17 0

Step 11 -- Install All Accessories

After all of the factory-installed options have been adjusted, install

all field-installed accessories. Refer to the accessory installation

instructions included with each accessory.

Step 12 -- Configure Controls

Refer to unit Controls and Troubleshooting book for information

on configuring controls (including the VFD controller).

POWER EXHAUST/

/' BAROMETRIC

// RELIEF HOOD

WOODEN RAILS \_ ECONOMIZER

HOOD

C06290

Fig. 14 -Economizer and Barometric Relief/Power

Exhaust Hoods Shipping Position

ECONOMIZER

HOOD

POWER EXHAUST/

BAROMETRIC

RELIEF HOOD

, \

/ \\

ECONOMIZER BAROMETRIC

PANEL RELIEF DAMPER SCREW

C06260

Fig. 15 - Hood Installation

MOUNTINGJ

FLANGE

POWER EXHAUST/

BAROMETRIC

RELIEF HOOD

Fig. 16 - Barometric Relief/Power Exhaust

Hood Flange

C06262

MOUNTING

FLANGE

ECONOMIZER

HOOD

Fig. 17 -Economizer Flange

C06263

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations,

Catalog No:48PD-01SI

Replaces: NEW

Carrier 48PD06 Installation Instructions Manual

Carrier 48PD06 Installation Instructions Manual

Carrier 48PD06 Installation Instructions Manual

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