Carrier 50XP024300, 50XP036300, 50XP048300, 50XP060300 Installation Guide

Installation Instructions

NOTE: Read the entire instruction manual before starting the installation.

NOTE: Installer: Make sure the Owner's Manual and Service Instructions are left with the unit after installation.

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS ......................... 2

RECEIVING AND INSTALLATION ................. 2-13

Check Equipment .................................. 2

Identify Unit .................................... 2

Inspect Shipment ................................. 2

Provide Unit Support ............................... 2

Roof Curb ...................................... 2

Slab Mount ..................................... 2

Ground Mount .................................. 2

Field Fabricate Ductwork ............................ 2

Provide Clearances ................................. 2

Rig and Place Unit ................................. 7

Inspection ...................................... 7

Installation ...................................... 7

Connect Condensate Drain ........................... 8

Install Duct Connections ............................. 9

Configuring Units for Downflow (Vertical) Discharge .... 9

Install Electrical Connections ........................ 10

High-Voltage Connections ........................ 10

Special Procedures for 208-v Operation .............. 11

Control Voltage Connections ....................... 11

Easy Select _ - 50XP ............................ 11

Standard Connection ............................. 13

Transformer Protection ........................... 13

PRE-START-UP ................................... 13

START-UP ..................................... 16-17

Check for Refrigerant Leaks ......................... 16

Start-Up Cooling Section and Make Adjustments ........ 16

50XP Start-Up ................................... 16

Checking and Adjusting Refrigerant Charge ........... 16

Indoor Airflow and Airflow Adjustments ............. 17

50XP Sequence Of Operation ...................... 17

MAINTENANCE ................................ 19-22

Air Filter ........................................ 20

Evaporator Blower and Motor ........................ 20

Condenser Coil, Evaporator Coil, and Condensate

Drain Pan ....................................... 20

Condenser Fan ................................... 21

Electrical Controls and Wiring ....................... 21

Refrigerant Circuit ................................. 21

Evaporator Airflow ................................ 21

Metering Devices-TXV & AccuRater cR)Piston ........... 21

Pressure Switches ................................. 21

Loss-of-Charge/Low-Pressure (Air Conditioner Only) .... 21

High-Pressure Switches ............................ 21

Copeland Scroll Compressor (Puron cR)Refrigerant) ........ 21

Refrigerant ...................................... 22

Turn to the Expertg

C99064

Fig. 1 - Model 50XP

Compressor Oil ................................... 22

Servicing Systems on Roofs with Synthetic Materials ...... 22

Liquid-Line Filter Drier ............................ 22

Puron (R-410A) Refrigerant Charging ................. 22

TROUBLESHOOTING .............................. 22

START-UP CHECKLIST ............................ 22

SAFETY CONSIDERATIONS

Improper installation adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other

conditions which may cause death, 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, protective clothing,

and work gloves. Use quenching cloth for brazing operations.

Have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions included in

literature and attached to the unit. Consult local building codes, the current editions of the National Electrical Code (NEC) NFPA 70.

In Canada refer to the current editions of the Canadian electrical

Code CSA C22.1.

Recognize safety information. This is the safety-alert symbol Z_. When you see this symbol on the unit and in instructions or

manuals, be alert to the potential for personal injury. Understand these 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 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.

The power supply (volts, phase, and hertz) must correspond to that specified on unit rating plate.

INTRODUCTION

The 50XP units are fully self-contained, and designed for outdoor installation (see Fig. 1). See Fig. 2 and 3 for unit dimensions. All

unit sizes have discharge openings for both horizontal and down- flow configurations, and are factory shipped with all duct openings

covered. (]nits may be installed either on a rooftop, ground-level cement slab, or directly on the ground if local codes permit. See

Fig. 4 for roof curb dimensions.

ELECTRICALSHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Before installing or servicing system, always turn off main power to system. There may be more than one disconnect

switch. Turn off accessory heater power switch if

applicable,

UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could result in personal iniury or

equipment damage. Puron (R-410A) systems operate at higher pressures than

standard R-22 systems. DO NOT use R-22 service equipment or components on Puron (R-410A) equipment. Ensure service equipment is rated for Puron (R-410A).

IMPORTANT: The gasketing of the unit to the roof curb is critical for a water tight seal. Install gasketing material supplied with the roof curb. Improperly applied gasketing also can result in

air leaks and poor unit performance. Curb should be level to within 1/4 in. (6 mm) (see Fig. 8). This is

necessary for unit drain to flmction properly. Refer to accessory roof curb installation instructions for additional information as

required.

SLAB MOUNT

Place the unit on a solid, level concrete pad that is a minimum of 4 in. (102 mm) thick, with 2 in. (51 mm) above grade. The slab

should extend approximately 2 in. (51 mm) beyond the casing on

all 4 sides of the unit. Do not secure the unit to the slab except

when required by local codes.

GROUND LEVEL

The unit may be installed either on a slab or placed directly on the ground if local codes permit. Place the unit on level ground prepared with gravel for condensate discharge.

Step 3 -- Field Fabricate Ductwork

Secure all ducts to roof curb and building structure on vertical

discharge units. Do not connect ductwork to unit. For horizontal

applications, unit is provided with flanges on the horizontal

openings. All ductwork should be 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 shall not exceed -.25 in. wc.

Step 4 -- Provide Clearances

The required minimum operating and service clearances are shown in Fig. 2 and 3. Adequate ventilation and condenser air must be

)rovided.

RECEIVING AND INSTALLATION

Step 1 -- Check Equipment

IDENTIFY UNIT The unit model number and serial number are printed on the unit

informative plate. Check this information against shipping papers. INSPECT SHIPMENT

Inspect for shipping damage while unit is still on shipping pallet. If unit appears to be damaged or is torn loose from its anchorage,

have it examined by transportation inspectors before removal. Forward claim papers directly to transportation company.

Manufacturer is not responsible for any damage incurred in transit. Check all items against shipping list. Immediately notify the

nearest equipment distribution office if any item is missing. To prevent loss or damage, leave all parts in original packages until

installation.

Step 2 -- Provide Unit Support

For hurricane tie downs, contact distributor for details and PE (Professional Engineering) Certificate, if required. ROOF CURB

Install accessory roof curb in accordance with instructions shipped with curb (see Fig. 4). Install insulation, cant strips, roofing, and

flashing. Ductwork must be attached to curb.

[]NIT HAZARD

Failure to follow this caution could result in equipment damage.

Do not restrict condenser airflow. An air restriction at either the outdoor-air inlet or the fan discharge can be detrimental

to compressor life.

The condenser fan draws air through the condenser coil and discharges it through the top fan grill. Be sure that the fan

discharge does not recirculate to the condenser coil. Do not locate the unit in either a corner or under an overhead obstruction. The

minimum clearance under a partial overhang (such as a normal house overhang) is 36-in. (914 mm) above the unit top. The maximum horizontal extension of a partial overhang must not

exceed 48 in. (1219 mm). Do not place the unit where water, ice, or snow from an overhang

or roof will damage or flood the unit. Do not install the unit on carpeting, tile, or other combustible materials.

UNIT

50XPO24 5OXPOBO BDXPOBE

705

[R78]

INOO011

OUTDOORCOIL

i m

CORNER WEIGHT LBSIHO

"I' "2" "3 .... 4"

024 62/28 49/22 7a/34 123156

030 62128 50/23 75134 125157

OSH 66/30 53124 79/3H 132/60

ELECTRICAL

CHARACTERISTICS

208-230-I-60, 2081230-3-60 208-230-:-60, 2081230-3-H0

208-R30-i-HO, 2081230-3-60

UNIT WT UNIT HEIGHT CENTER OF GRAVITY MMIIN

LBS HG 'AT' Y Z

308 i40 i091714298: 44761176] 45721180] 312 I42 :142514498: 495B[19B] 44761176] 4572[:80] 330 i50 :193314698: 533412101 5OBO[2OO] 4420[:761

REQIJIPN_:)CLEARANCES TO _'BBLE MAR-

TOP OF UNIT ............................................. 3556 [1400]

DUCT SIDE OF UNIT ......................................... 508 [HO0]

SIDE OPPOSITE DUCTS ............................. 3556 [1400]

BOTTOM OF UNIT ........................ O 0 [0001

ELECTRIC HEAT PANEL .................................... 9144 [3600]

N_C. I_.I_QIJII_ Cl.EARANCE&

BETWEEN UNITS, POWER ENTRY SIDE ....................... 10668 [4ROO]

UNIT AND UNGROUNDED SURFACES, POWER ENTRY SIDE .......... 9140 [3600]

UNIT AND BLOCK OR CONCRETE WALLS AND OTHER

GROUNDED SURFACES, POWERENTRY SIDE .......... 1066 8 [4200]

REO_JlREDCL,.E&RANOE FOR O_A"IIOI_ AND S_VlCll&3

EVAP COIL ACCESS SIDE ................... 9140 [H6 OH]

POWER ENTRY SIDE ..................................... 9140 13600]

(EXCEPT FOR NEC REQUIREMENTS)

UNIT TOP ................................................ 12192 [48H0]

SIDE OPPOSITE DUCTS ........................... 9140 [36 00]

DUCT PANEL ............................. 3048 [1200]_

_MINIMUM DISTANCES:IF UNIT IS PLACED LESS THAN 3048 [iHO0] FROM WALL

SYSTEM,THEN SYSTEM PERFORMANCEMAYBE COMPROMISED

DIMENSIONS IN [] AHE IN INCHES

MILLIMETERS [IN]

TOP ViEW

1985

[3 441

FIELD ENTRY--

SERVICE PORTS

[oG_I

11939

[4700]

.=.

, FULL LOUVER

............]i

LEFT SiDE VIEW

T T

[32 7R]

_724

570 3 ERR 45]

L42 7

[ 6B]

[2 85]

" _ " 22R[O_T_E_ _

L 81 :

COMPRESSOR, BLOWER, ELECTRIC HEAT & ELECTRICAL ACCESS PANEL

12265

[48281

[3:43]

FRONT ViEW

FULL LOUVER

5505

[H1.67]

L POiER E_IT_Y [ : ]

222

[481]

L ...................... IL

SUPPLY DUCT • OPENING

[983]

RIGHT SiDE VIEW REAR ViEW

50XPHO0017

[983]

UNIT

15391 11349]

3558 #_--114D13558 1

[1Aoll /l

! UETURNJ _W"/sUPRLY/ I_

I 'IIII OPTIONAL I I OPTIONAL

704 [B771 4066 IIII RETURN I I SUPPLY

[1601] AIR I AIR

INDOOR COIL

OPENING I OPENING

IIII

llll

IIII

50XPO42 50XPO48 5OXPOBO

CORNER WEIGHT LBS/HG

"1' "2" "3 .... 4"

042 78135 62128 93/42 155170

048 84138 68/31 101146 109177

060 93/42 75134 112/51 187/85

CHARACTERISTICS G

ELECTRICAL J UL35iBIT _

208-230-1-0%2081230-3-60 176 208-230-1-60, 2081230%%0 422 I 192

BEQ_JI_ CI,,,_AR/84CES TO _S'I'U.I_ MAR,..

TOD OF UNIT ............................................. 3550 [i400]

DUCT SIDE OF UNIT ......................................... 508 [200]

SIDE OPPOSITE DUCTS ......................... 3556 [1400]

BOTTOM OF UNIT ........................... O O [OOO]

ELECTRIC HEAT PANEL ................................... 9144 [3600]

NEC. REQIJIR_:)CLEARANCE&

BETWEEN UNITS, POWER ENTRY SIDE ........................ 10068 [4200]

UNIT AND UNGROUNDED SURFACES, POWER ENTRY SIDE .......... 9140 [3600]

UNIT AND BLOCK OR CONCRETE WALLS AND OTHER

GROUNDED SURFACES, ROWERENTRY SIDE ............. 1066 8 142 001

RE(_JIRIB) CI..EARANCE FOR OPiE_A'BOI_ AND SB_VlClr_3

EVAP COIL ACCESS SIDE .................... 914 0 [3600]

POWER ENTRY SIDE ........................................ 9140 [3600]

(EXCPT FOR NEC REQUIREMENTS)

UNIT TOP................................................ 12192 [4800]

SIDE OPPOSITE DUCTS ................. 9140 [36 DO]

DUET PANEL ............................................. 5048 [1200D

_MINIMUM DISTANCES:IF UNIT IS PLACED LESS THAN 3048 [1200] FROM WALL

/ t 1i1

OUTDOOR COIL _/

UNIT HEIGHT CENTER OF GRAVITY MM/IN

1091714298] 49531195] 4476[176] 45721180] 1142514498] 49551195] 44761i761 45721180]

I208-230-1-60, 208/230-3-60 467 22

"AI' 533412i0] 50801200] Z

1!93314098] 44201176]

SYSTEM,THEN SYSTEM PERFORMANCE MAYBE COMPROMISED

DIMENSIONS IN [] ARE IN INCHES

MILLIMETERS [IN]

MILLIMETERS [[N]

TOP VIEW

.=.

10906 [42941

SERVICE PORTS

•__ i¸

L,' I'I , 2_

4% J /]

I,/o,:!;_;s!_T=L_32_

x 220 [088] DP [12 95]

11231 [44 221

LEFT SIDE VIEW

FIELD ENTRY--

620 2 [24 42]

_722

F 11959

[4700]

]

JI.::Ta

[284]

COMPRESSOR, BLOWER, ELECTRIC HEAT _

& ELECTRICAL ACCESS PANEL

12263 [4828]

FRONT VIEW

75] DIA HO

445 [I POWER ENTRY_

_ 326_ _

809 [342]

1220 [481]

FULL LOUVER

[0881DIA HOLE

CONTROL ENTRY

RIGHTSIDE VIEW

402 0

[1583]

1177

[465]

SUPPLY RETURN DUCT DUCT

OPENING OPENING

_872 3475

351 2

[13 83] [ 383]

REAR VIEW

I 50XP500018

ase

/ Screw -___

/ (NOTE A) -_

/ *Gasketina_ _

[/ ou_a?_le_;g_g _ _]1 ..............................

1_ Wood nailer*\

[ Flashing field Ill_l II \

I supplied _ _Jll_il_ R°°fcurb* I

ll_iiiill_ Insulation(field

I Roofing mate_al tl_!i_ II supphed) /

/ base

/ ,,,scrtw_

/ ,.(NOTE A) -_H

/ *Gask_tin"g .._, _

Woodnai,er*

I Flashing field Ill'Ill

I supplied _ JIl_l _ Roofcurb*

l Roofing mate_al supplied)

tl_su_ation (f!e_d

/l_:iill II _auctwork [

\ II ,ie,dsupp,ed/

Roof Curb for Small Cabinet

Note A:When unit mounting screw is used

retainer bracket must also be used.

Supply opening

(Bx c)

\ o_1111 f'_d supplied /

]I_!_IP -- Ductw°rk t

Roof Curb for Large Cabinet

Note A:When unit mounting screw is used

retainer bracket must also be used.

R/A

'_'_- Gasket around

duct

S/A

Long

Suppo_

Retu'n opening

(Bx c)

50XP UNIT SIZE

024-036

ROOF CURB

042-060

NOTES:

1. Roof curb must be set up for unit being installed.

2. Seal strip must be applied, as required, to unit being installed.

3. Roof curb is made of 1d-gauge steel.

4. Attach ductwork to curb (flanges of duct rest on curb).

5. Insulated panels: 1-in. (25mm) thick fiberglass 1 lb. (.45 kg) density.

ODS CATALOG NUMBER

CPRFCURB006A00 CPRFCURB007A00

CPRFCURB008A00 CPRFCURB009A00

Support

Fig. 4 - Roof Curb Dimensions

Insulated Gasket around deck pan outer edge.

IN, (MM)

8 (203)

14 (356)

8 (203)

14 (356)

IN. (MM)

11 (279) 11 (279)

16-3/16 (411) 16-3/16 (411)

IN. (MM) 16-1/2 (419) 16-1/2 (419)

17-3/8 (441) 17-3/8 (441)

C00076

IN, (MM)

28-3/4 (730) 28-3/4 (730)

40-1/4 (1022) 40-1/4 (1022)

Unit* 024 024 030 030

Ib kg Ib kg

Rigging 319 145 323 147 Weight

NOTE: See dimensional drawing for corner weights

SMALL CABINET

036 036 042 042 048 048

Ib kg Ib kg Ib kg

341 155 Rigging 399 181 433 196

Unit*

Weight

Fig. 5 - Rigging Weights

•/,1 w/IONAL, ---_----- SUPPLY !111

t RETURN

IIIII AIR i1111!OPENING//)__ i \_ .._ AIR Illl'

((Ill /' l(i\ _ ( __ j(II

UII! II [1!1

J,.lllll l'If(l,_ @ _ l fillllll

OPENING !! II

II II

,,,,, ,,.., /,// II',',

LARGE CABINET

060

478

060

217

2" (51 mm

___=__= ,//

EVAP. COIL COND. COIL

Fig. 6 - Slab Mounting Details

Step 5 -- Rig and Place Unit

Rigging and handling of this equipment can be hazardous for many reasons due to the installation location (roofs, elevated structures, etc.)

Follow all applicable safety codes. Wear safety shoes and work gloves.

UNIT FALLING HAZARD Failure to follow this warning could result in personal

iniury, death or property damage. When installing the unit on a rooftop, be sure the roof will

support the additional weight.

Never stand beneath rigged units or lift over people.

Only trained, qualified crane operators and ground support staff should handle and install this equipment.

When working with this equipment, observe precautions in the literature, on tags, stickers, and labels attached to the equipment,

and any other safety precautions that might apply.

A08465

INSPECTION

Prior to initial use, and at monthly intervals, all rigging brackets

and straps should be visually inspected for any damage, evidence of wear, structural deformation, or cracks. Particular attention should be paid to excessive wear at hoist hooking points and load

support areas. Brackets or straps showing any kind of wear in these

areas must not be used and should be discarded.

DUCTS

y 5527")

SEAL STRIP MUST BE IN

PLACE BEFORE PLACING

PLACE _" (48.28")

BASEPAN SLOT (BELOW HANDHOLDS) BEFORE RIGGING

UNIT ON ROOF CURB

C99015

Fig. 7 - Suggested Rigging

PROPERTY DAMAGE HAZARD

Failure to follow this warning could result in personal iniury/death or property damage.

Rigging brackets for one unit use only. When removing a unit at the end of its useful life, use a new set of brackets.

Never exceed 200 lb. (91 kg) per bracket lifting force.

ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal

iniury or death. Before installing or servicing system, always turn off main

power to system. There may be more than one disconnect switch. Turn off accessory heater power switch if applicable. Tag disconnect switch with a suitable warning

label.

MAXIMUM ALLOWABLE

DIFFERENCE in. (mm)

A-B

1/4 (6.35)

Fig. 8 - Unit Leveling Tolerances

B-C ArC

1/4 (6.35) 1/4 (6.35)

INSTALLATION

6. Remove unit from shipping carton. Leave top shipping skid on the unit as a spreader bar to prevent the rigging

straps fromdamaging the unit. If the wood skid is not available, use a spreader bar of sufficient length to protect

unit from damage.

7. Position the lifting bracket assembly around the base of the unit. Be sure the strap does not twist.

8. Place each of the 4 metal lifting brackets into the rigging holds in the composite unit base.

9. Thread lifting bracket strapping around bottom perimeter of unit as follows:

a. Open lever of tension buckle (ratchet type).

b. Feed strapping through tension buckle (See Fig. 9).

A07925

DETAIL A

UNIT HEIGHT

SEE DETAIL A/

A08005

Fig. 10 - Lifting Point

14. Lift unit. When unit is directly over the roof curb, remove the 2 safety straps. Lower the equipment onto the roof curb.

PROPERTY DAMAGE HAZARD

Failure to follow this warning could result in personal iniury/death or property damage.

Rigging bracket MUST be under the rain lip to provide adequate lifting.

FEED _

C99067

Fig. 9 - Belt Threading

c. Pull strapping through tension buckle unit taut.

d. Snap lever down to lock strap in tension buckle. To

release strapping, squeeze safety latch, lift lever, and pull webbing outward.

10. Tighten the tension buckle until it is taut. Lifting brackets must be secure in the rigging holds.

11. Attach field-supplied clevis or hook of sufficient strength to hole in the lifting bracket (See Fig. 10).

12. Attach the 2 safety straps directly to the clevis or hook at the 4 rigging brackets. DO NOT attach the safety straps to the

lifting brackets (See Fig. 10).

13. Position lifting point directly over the unit's center of gravity.

PROPERTY DAMAGE HAZARD

Failure to follow this warning could result in personal iniury/death or property damage.

Do not strip screws when re-securing the unit. If a screw is stripped, replace the stripped one with a larger diameter screw (included).

UNIT FALLING HAZARD Failure to follow this warning could result in personal

injury/death or property damage. When straps are taut, the clevis should be a minimum of 36

in. (914 mm) above the unit top cover.

Table 1 - Physical Data - Unit 50XP

UNIT SIZE NOMINAL CAPACITY (ton)

SHIPPING WEIGHT (Ib) SHIPPING WEIGHT (kg)

COMPRESSORS

Quantity

REFRIGERANT (R-410A)

Quantity (lb.) Quantity (kg)

REFRIGERANT METERING DEVICE

OUTDOOR COIL

Rows...Fins/in,

Face Area (sq ft)

OUTDOOR FAN

Nominal Cfm Diameter (in.)

Diameter (mm)

Motor Hp (Rpm)

INDOOR COIL

Rows...Fins/in,

Face Area (sq ft)

INDOOR BLOWER

Nominal Cooling Airflow (Cfm) 800 1000 1100 1400 1400 1750

Size (in.) 10x10 10x10 1lx10 1lx10 1lx10 1lx10 Size (mm.) 254x254 254x254 279.4x254 279.4x254 279.4x254 279.4x254

Motor HP (RPM) 1/2 (1050) 1/2 (1050) 3/4 (1000) 3/4 (1075) 3/4 (1075) 1.0 (1040) HIGH-PRESSURE SWITCH 650 +/- 15 (psig) Cut-out Reset (Auto) 420 +/- 25

LOSS-OF-CHARGE / LOW-PRESSURE 20 +/- 5 SWITCH (Liquid Line) (psig) cut-out Re- 45 +/- 10

set (auto)

RETURN-AIR FILTERSt$

Throwaway Size (in.) 20x20x1 20x24x1 24x30x1 Throwaway Size (mm) 508x508x25 508x610x25 610x762x25

1- Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity

of 300 ft/minute for throwaway type or 450 ft/minute for high-capacity type. Air filter pressure drop for non-standard filters must not exceed 0.08 IN. W.C..

$ If using accessory filter rack refer to the filter rack installation instructions for correct filter sizes and quantity.

024 030 036

2 2-1/2 3

356 360 378

161 163 171

042 048 060

3-1/2 4 5

436 470 515 198 213 234

Scroll

7.3 8.0 9.5 10.7 11.25 13.2

3.3 3.6 4.3 4.9 5.1 6.0 TXV

2...21 2...21 2...21 2...21 2...21 2...21

11.95 12.0 13.6 15.4 17.4 19.3

2350 2700 2350 2800 3300 3300

22 22 22 22 22 22

558.8 558.8 558.8 558.8 558.8 558.8

1/8 (825) 1/8 (825) 1/8 (825) 1/8 (825) 1/4 (1100) 1/4 (1100)

3...15 3...15 4...15 3...15 4...15 4...17

3.7 3.7 3.7 4.7 4.7 5.7

Step 6 -- Connect Condensate Drain

NOTE: When installing condensate drain connection be sure to comply with local codes and restrictions.

Model 50XP disposes of condensate water through a 3/4 in. NPT fitting which exits through the base on the evaporator coil access

side (See Fig. 2 and 3 for location). Condensate water can be drained directly onto the roof in rooftop

installations (where permitted) or onto a gravel apron in groundlevel installations. Install a field-supplied condensate trap at end of condensate connection to ensure proper drainage. Make sure

that the outlet of the trap is at least 1 in. (25 ram) lower than the drainpan condensate connection to prevent the pan from

overflowing (See Fig. 11). When using a gravel apron, make sure it slopes away from the unit.

1" (25 mm) MIN.

A08001

Fig. 11 - Condensate Trap

Connect a drain tube using a minimum of 3/4 -in. PVC or 3/4 -in. copper pipe (all field-supplied) at the outlet end of the 2-in. (51 ram) trap. Do not undersize the tube. Pitch the drain tube

downward at a slope of at least 1-in. (25 ram) for every 10ft (3 m) of horizontal run. Be sure to check the drain tube for leaks. Prime

trap at the beginning of the cooling season start-up.

Table 2 - Minimum Airflow for Safe Electric Heater Operation

(Cfm)

SIZE

024 030 036 042 048 060 800 1000 1200 1400 1600 2000

Step 7 -- Install Duct Connections

The unit has duct flanges on the supply- and return-air openings on the side and bottom of the unit. For downshot applications, the

ductwork can be connected to the roof curb (See Fig. 2 and 3 for connection sizes and locations).

IMPORTANT: Use flexible connectors between ductwork and unit to prevent transmission of vibration. Use suitable gaskets to

ensure weathertight and airtight seal. When electric heat is installed, use fire proof canvas (or similar heat resistant material) connector between ductwork and unit discharge connection. If

flexible duct is used, insert a sheet metal sleeve inside duct. Heat resistant duct connector (or sheet metal sleeve) must extend 24-in.

(610 ram) from the unit discharge connection flange into the ductwork.

+ 18 hidden pages