Installation Manual

ManualsBrandsAirQuest ManualsCooling & Air Quality5 Ton Multi-Positional Communicating Air Handler

496 01 4201 04 4/20/18

INSTALL

TION INSTRUCTIONS

Fan Coils

FCM4X24- 60

These instructions must be read and understood completely before attempting installation.

DANGER, WARNING, CAUTION, and

NOTE

The signal words DANGER, WARNING,

CAUTION, and NOTE are used to identify levels of

hazard seriousness. The signal word DANGER is

only used on product labels to signify an immediate

hazard. The signal words WARNING, CAUTION,

and NOTE will be used on product labels and

throughout this manual and other manuals that may

apply to the product.

DANGER - Immediate hazards which will result in

severe personal injury or death.

W ARNING - Hazards or unsafe practices which

could result in severe personal injury or death.

CAUTION - Hazards or unsafe practices which

may result in minor personal injury or product or

property damage.

NOTE - Used to highlight suggestions which will

result in enhanced installation, reliability, or

operation.

Signal Words in Manuals

The signal word WARNING is used throughout this

manual in the following manner:

The signal word CAUTION is used throughout this

manual in the following manner:

Signal Words on Product Labeling

Signal words are used in combination with colors

and/or pictures on product labels.

WARNING

Safety Labeling and Signal Words

CAUTION

WARNING

TABLE OF CONTENTS

Introduction 2.......................................

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

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

Mount Fan Coil 2................................

Air Ducts 6.....................................

Electrical Connections 7..........................

Refrigerant Tubing Connection & Evacuation 9......

Condensate Drain 9.............................

Unit Start- Up 10................................

Accessory Installation 10.........................

Start- Up and T roubleshooting 11..................

FCM4X Fan Coil Sequence of Operation 14.........

CARE AND MAINTENANCE 15.......................

R- 410A Quick Reference Guide 16....................

WARNING

PERSONAL INJURY, AND/OR PROPERTY DAMAGE

HAZARD

Failure to carefully read and follow this warning could

result in equipment malfunction, property damage,

personal injury and/or death.

Installation or repairs made by unqualified persons

could result in equipment malfunction, property dam-

age, personal injury and/or death.

The information contained in this manual is intended

for use by a qualified service technician familiar with

safety procedures and equipped with the proper

tools and test instruments.

Installation must conform with local building codes

and with the National Electrical Code NFPA70 current

edition.

Summary of content (16 pages)

PAGE 1
INSTALLATION INSTRUCTIONS Fan Coils FCM4X24- 60 These instructions must be read and understood completely before attempting installation. Safety Labeling and Signal Words DANGER, WARNING, CAUTION, and NOTE The signal words DANGER, WARNING, CAUTION, and NOTE are used to identify levels of hazard seriousness. The signal word DANGER is only used on product labels to signify an immediate hazard.
PAGE 2
INSTALLATION INSTRUCTIONS Fan Coils: FCM4X INTRODUCTION Model FCM4X fan coils are designed to be installed with the Observert Communicating Wall Control. The FCM4X fan coils will provide airflow at a rate commanded by the Wall Control. The nominal airflow/ton rate is 350 CFM/ton. The Wall Control will modify the commanded airflow under certain operating modes. Refer to the Wall Control literature for further system control details.
PAGE 3
INSTALLATION INSTRUCTIONS Fan Coils: FCM4X Figure 1 Slope Coil Unit in Upflow Application FIELD SUPPLIED SUPPLY DUCT POWER ENTRY OPTIONS LOW VOLT ENTRY OPTIONS 24 - 17.5” (444.5 mm) 36, 48 - 21” (533.4 mm) 60 - 24” (609.6 mm) FRONT SERVICE CLEARANCE A COIL UNITS UPFLOW/DOWNFLOW SECONDARY DRAIN 1- 1/2” 38.1 mm) 19” (482.6 mm) UPFLOW/DOWNFLOW PRIMARY DRAIN 2- 1/2” (63.5 mm) FIELD MODIFIED SIDE RETURN 19” LOCATION FOR (482.
PAGE 4
INSTALLATION INSTRUCTIONS Figure 3 Fan Coils: FCM4X A Coil in Horizontal- Left Application A COIL BRACKET FACTORY SHIPPED HORIZONTAL LEFT APPLICATION COIL SUPPORT RAIL B C DRAIN PAN SUPPORT BRACKET COIL BRACKET HORIZONTAL DRAIN PAN PRIMARY DRAIN HORIZONTAL LEFT AIR SEAL ASSEMBLY REFRIGERANT CONNECTIONS Figure 4 Modular Unit Assembly SECONDARY DRAIN HORIZONTAL LEFT A00072 D.
PAGE 5
INSTALLATION INSTRUCTIONS Fan Coils: FCM4X 6. Convert air seal assembly for horizontal right. a. Remove air seal assembly from coil by removing 4 screws. b. Remove air splitter (B) from coil seal assembly by removing 3 screws. (See Fig. 6 inset) c. Remove filler plate (A) and install air splitter (B) in place of filler plate. d. Install filler plate (A) as shown in horizontal right application. e. Remove condensate troughs (C) and install on opposite tube sheets. f. Install hose onto plastic spout. 7.
PAGE 6
INSTALLATION INSTRUCTIONS Figure 6 Fan Coils: FCM4X A Coil in Horizontal- Right Application A REFRIGERANT CONNECTIONS AIR SEAL ASSEMBLY HORIZONTAL RIGHT APPLICATION COIL SUPPORT RAIL B C COIL BRACKET DRAIN PAN SUPPORT BRACKET COIL SUPPORT RAIL COIL BRACKET HORIZONTAL DRAIN PAN PRIMARY DRAIN HORIZONTAL RIGHT SECONDARY DRAIN HORIZONTAL RIGHT F.
PAGE 7
INSTALLATION INSTRUCTIONS Fan Coils: FCM4X It is a recommendation, but not a requirement, to use flexible connectors between ductwork and unit to prevent transmission of vibration. When electric heater is installed, use heat resistant material for flexible connector between ductwork and unit at discharge connection. Ductwork passing through unconditioned space must be insulated and covered with vapor barrier. Mobile Home or Manufactured Housing Applications Figure 7 4” (101.
PAGE 8
INSTALLATION INSTRUCTIONS Figure 8 Fan Coils: FCM4X Transformer Connections SECONDARY Figure 10 Wall Control BROWN Communication AC / HP Fan Control DX+ DX+ DX+ DX- DX- DX- C C C R R R OAT YELLOW 230 Wall Control Fan Coil Wiring with Non- Communicating Single- Stage AC / HP Fan Control DX+ DX+ DX- DX- C C R R OAT OPN COM C O Y W R C O Y W G R CLS HUM C 24vac OPN COM In manufactured housing applications, the Code of Federal Regulations, Title 24, Chapter XX, Part 3280.
PAGE 9
INSTALLATION INSTRUCTIONS Procedure 5. — Refrigerant Tubing Connection and Evacuation Use accessory tubing package or field- supplied tubing of refrigerant grade. Insulate entire suction tube if field- supplied tubing is used. Tubing package has an insulated suction tube. Do not use damaged, dirty, or contaminated tubing because it may plug refrigerant flow control device. Always evacuate coil and field- supplied tubing to 500 microns before opening outdoor unit service valves.
PAGE 10
INSTALLATION INSTRUCTIONS Figure 12 Fan Coils: FCM4X Condensate Trap and Unit Install traps in condensate lines as close to the coil as possible. (See Fig. 12.) Make sure that the outlet of each trap is below its connection to the condensate pan to prevent condensate from overflowing drain pan. Prime all traps, test for leaks, and insulate traps if located above a living area.
PAGE 11
INSTALLATION INSTRUCTIONS located adjacent to System Communications connector, below STATUS LED, and is used as an indicator of system communications status. Status Codes will be displayed on the STATUS LED using the following protocol: 1. The number of short flashes indicates first digit of code. 2. The number of long flashes indicates second digit of code. 3. A short flash is 0.25 seconds on. A long flash is 1 second on. 4. The time between flashes is 0.25 seconds. 5.
PAGE 12
INSTALLATION INSTRUCTIONS with Wall Control are successful, COMM LED will be lit and held on. At the same time, amber STATUS LED will be lit and held continuously on until a request for operating mode is received. The STATUS LED will be on any time fan coil is in idle mode.
PAGE 13
INSTALLATION INSTRUCTIONS 1. Stop all system operations at Wall Control and check heater stage 24VAC outputs. 2. Disconnect electric heater at plug/receptacle 2 and check heater wiring for faults. See Status Code 36 for more information. STATUS CODE 44, MOTOR COMMUNICATION FAULT: The MOTOR LED is connected to the blower motor communication line and works with the fan coil control microprocessor and STATUS LED to provide fan coil operation and troubleshooting information.
PAGE 14
INSTALLATION INSTRUCTIONS NOTE: It may be useful as an electric heater troubleshooting procedure to disconnect the system communications to force Status Code 16 enabling of emergency heat mode. It is difficult to know which heater output is energized or not energized in normal operation. When fan coil is operated in emergency heat mode using electric heaters, both outputs are energized and de- energized together.
PAGE 15
INSTALLATION INSTRUCTIONS system efficiency. Refer to Wall Control literature for further system control details. Airflow during electric heater operation must be greater than a minimum level for safe operation.
PAGE 16
INSTALLATION INSTRUCTIONS Fan Coils: FCM4X R- 410A REFRIGERANT QUICK REFERENCE GUIDE S R- 410A refrigerant operates at 50- 70 percent higher pressures than R- 22. Be sure that servicing equipment and replacement components are designed to operate with R- 410A refrigerant S R- 410A refrigerant cylinders are rose colored. S Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400. S R- 410A refrigerant systems should be charged with liquid refrigerant.