Installation guide

ManualsBrandsCarrier ManualsAir HandlerOfficial Carrier air handler

Installation Instructions

NOTE: Read the entire instruction manual before starting the

installation.

TABLE OF CONTENTS

PAGE

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

INTRODUCTION .................................. 1

HEATER PACKAGES .............................. 1

INSTALLATION ................................... 1

Step 1 - Check Equipment .......................... 1

Step 2 - Mount Unit ............................... 2

Step 3 - Air Ducts ................................ 4

Step 4 - Electrical Connections ...................... 4

Step 5 - Refrigerant Tubing Connection and Evacuation . .. 7

Step 6 - Refrigerant Flow-Control Device .............. 8

Step 7 - Condensate Drains ......................... 8

Step 8 - Accessories ............................... 9

Step 9 - Sequence of Operation ..................... 10

START-UP PROCEDURES ......................... 10

CARE AND MAINTENANCE ....................... 10

AIRFLOW PERFORMANCE TABLES ................ 11

PURON@ (R-410A) QUICK REFERENCE GUIDE ...... 12

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 kits or accessories when installing.

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

quenching cloth for brazing operations. Have fire extinguisher

available. Read these instructions thoroughly and follow all

warnings or cautions attached to the unit. Consult local building

codes and National Electrical Code (NEC) for special

requirements.

Recognize safety information. This is the safety-alert symbol /b,.

When you see this symbol on the unit and in instruction manuals,

be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING. CAUTION,

and NOTE. These words are used with the safety-alert symbol.

DANGER identifies the most serious hazards which will result in

severe personal injury or death. WARNING signifies hazards

which could result in personal injury or death. CAUTION is used

to identify unsafe practices which may result in minor personal

injury or product and property damage. NOTE is used to highlight

suggestions which will result in enhanced installation, reliability, or

operation.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury

or death.

Before installing or servicing unit, always turn off all power

to unit. There may be more than 1 disconnect switch. Turn

off accessory heater power, if applicable.

INTRODUCTION

Models FX4C and FY4A are designed for flexibility and can be

used for upflow, horizontal, or downflow (kit required) and

manufactured and mobile home applications. These units are

designed to meet the low air leak requirements currently in effect.

Because of this, the units need special attention in the condensate

pan and drain connection area and when brazing tubing. These

units are designed specifically for Puron c_)refrigerant and must be

used only with Puron (> refrigerant air conditioners and heat pumps

as shipped. These units are available for systems of 18,000 through

60,000 Btuh nominal cooling capacity. Factory-authorized.

field-installed electric heater packages are available in sizes 5

through 30kW. See Product Data literature for available accessory

kits.

HEATER PACKAGES

This unit may or may not be equipped with an electric heater

package. For units not equipped with factory-installed heat, a

factory-approved, field-installed, UL listed heater package is

available from your equipment supplier. See unit rating plate for a

list of factory-approved heaters. Heaters that are not factory

approved could cause damage which would not be covered under

the equipment warranty. If fan coil contains a factory-installed

heater package, minimum circuit ampacity (MCA) and maximum

fuse/breaker may be different than units with a same size

field-installed accessory heater. The differences is not an error and

is due to calculation difference per UL guidelines.

INSTALLATION

Step 1 -- Check Equipment

Unpack unit and move to final location. Remove carton taking care

not to damage unit. Inspect equipment for damage prior to

installation. File claim with shipping company if shipment is

damaged or incomplete.

Locate unit rating plate which contains proper installation

information. Check rating plate to be sure unit matches job

specifications.

Summary of content (12 pages)

PAGE 1
Installation NOTE: Read installation. the entire instruction TABLE manual before starting Instructions the 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. OF CONTENTS PAGE SAFETY CONSIDERATIONS INTRODUCTION HEATER ........................ 1 .................................. PACKAGES INSTALLATION 1 .....................
PAGE 2
Step 2 -- Mount NOTE: Unit Unit can stand or lie on floor, or hang from ceiling space for wiring, piping, and servicing unit. IMPORTANT: and/or When living area, unit is installed building codes over or wall. Allow ceiling pan to be installed under the entire allow as an alternative, the running separate, secondary condensate additional restrictions or precautions. A.
PAGE 3
NOTE: Modular unitscanbedisassembled andcomponents moved separately toinstallation area forreassembly. Thisprocess accommodates smallscuttleholesandlimitingentrances to installation sites. (See Fig.4.) Horizontal Right 1. Remove Conversion blower of Units With A-Coils and coil access panels. -AIR (See Fig. 6.) SEAL CONNECTIONS APPLICATION SUPPORT SUPPORT SUPPORT HORIZONTAL HORIZONTAL BRACKET _ RIGHT RIGHT A00071 _ Fig. 6 - Conversion 2 SCREWS for Horizontal A-Coil COIL BOX 2.
PAGE 4
7.Install horizontal panonrightside ofcoilassembly. 8.Slide coilassembly intocasing. Besure coilbracket oneach corner ofvertical panengages coilsupport rails. 9.Reinstall 2 snap-in clipstocorrectly position andsecure coilassembly inunit.Besure clipwithlarge offsets isused onrightside ofunittosecure horizontal pan. 10.Remove twoovalfittingcaps fromtheleftsideofthecoil doorandfittingpanel. 11.Remove insulation knockouts onrightsideofcoilaccess panel. 12.
PAGE 5
ELECTRICAL Failure death. SHOCK to follow HAZARD this warning could result in personal Field wires on the line side of the disconnect found injury or in the fan coil unit remain live, even when the pull-out is removed. Service and maintenance to incoming wiring cannot be performed until the main disconnect switch (remote A. Connections Line Voltage to the unit) is turned If unit will contain accessory electric heater, power plug from fan coil and connect male female C2 plug 1.
PAGE 6
FAN COIL THERMOSTAT(CONTROL) FAN COl L (CONTROL) HEAT PUMP (CONTROL) ] ............... R ............. C:5_ R R G WriT WH3 W2 _-Nc BLU W3 H_ L:_ c W2 _v2 BL--UoSTS 1_ ......... C ] AIR COND. E VlO [] ............ o Y A94059 Fig. 12 - Wiring Layout (Cooling Air Conditioning and 1-Stage FAN COIL (CONTROL) THERMOSTAT HEAT PUMP CONTRL) _R ] ] Unit Heat) R ......................... Z_, GRY ......... G EMERGENCY HEAT RELAY A94062 C ........... w: Fig.
PAGE 7
NOTE: Use connecting Grounding provided RED conduit and conduit connector in control with box. CFM and Motor or without electric Speed heaters Selection require a minimum Refer to the unit wiring label to ensure that the fan speed not lower than the minimum fan speed indicated. FY4A board. for supply wire(s) to unit to obtain proper grounding. may also be accomplished by using grounding lugs E. Minimum Units UL-listed fan speed To change CFM.
PAGE 8
PRODUCT DAMAGE HAZARD Failureto followthiscaution mayresultin product or property damage. A brazing shield MUSTbeused whentubing sets arebeing brazed totheunitconnections toprevent damage totheunit surface andcondensate panfittingcaps. Unitshavesweat suction andliquidtubeconnections. Make suction tube connection first. 1.Cuttubing tocorrect length. 2.Insert tubeintosweat connection onunituntilitbottoms. 3.Braze connection using silverbearing ornon-silver bearing brazing materials.
PAGE 9
B. Humidifier Connect humidifier and humidistat 23 and Fig. 24. The cooling to fan coil unit as shown lockout in Fig. relay is optional. CONTROL BOARD s PANEL 2?gAcFAN RELAY - SECONDAR Y DRAIN AppRoPREATE (USE FACTORY PRIMARY TRAP RE U[RE_ FIELD W_TH SUPPUED I R G T C C C NONCI Illlll TRAp REQUIRED KIT OR TRAP) (USE FACTORY KIT OR FIELD SUPPUED TRAP OF SUFFICIENT DEPTH STANDARD P TRAPS NOT $UFF[C[ENT FIGURE ARE SEE OF RECOMMENDED CONDENSATE TRAP) A03003 Fig.
PAGE 10
START-UP FAN COIL THERMOSTAT PROCEDURES (CONTROL) Refer to outdoor unit Installation Instructions for system instructions and refrigerant charging method details. R start-up W2 W3 UNIT COMPONENT E Failure to follow this caution C Never operate unit without a filter. Damage to blov:er motor or coil may result. Factory authorized filter kits must be used AIR COND i [] -- i HAZARD may result in product damage. when locating the filter inside the unit.
PAGE 11
AIRFLOW PERFORMANCE Table FX4C SIZE BLOWER SPEED Medium Low Performance TOTAL EXTERNAL STATIC PRESSURE 0.10 0.20 0.30 0.40 0.50 0.
PAGE 12
PURON® • Puron (R-410A) refrigerant components • Puron • Puron operates refrigerant • Manifold should into suction sets should • Puron • Vacuum with liquid refrigerant. line with compressor Be sure that servicing pressure be designed pumps will not remove • Do not use liquid-line equipment and replacement or DOT BW400. Use a commercial type metering retard. to detect HFC refrigerant. with POE oils. from oil.