Installation Manual

ManualsBrandsAirQuest ManualsCentral Air & Heating4 Ton 15 SEER Heat Pump System

496 01 5503 01 4/20/18Specifications are subject to change without notice.

INSTALLATION INSTRUCTIONS

Fan Coils

FEM4X, FEM4P, REM4X, FXM4X

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.

Safety Labeling and Signal Words

CAUTION

WARNING

TABLE OF CONTENTS

INTRODUCTION 2...............................

LOCATION 2....................................

HEATER PACKAGES 2...........................

AIR DUCTS 7...................................

ELECTRICAL CONNECTIONS 7..................

REFRIGERANT TUBING 10........................

REFRIGERANT FLOW- CONTROL DEVICE 10......

REFRIGERANT METERING DEVICE 11.............

CONDENSATE DRAINS 11........................

ACCESSORIES 12................................

SEQUENCE OF OPERATIONS 13..................

START- UP PROCEDURE 13......................

CARE AND MAINTENANCE 13.....................

AIRFLOW PERFORMANCE TABLES 14.............

R- 410A QUICK REFERENCE GUIDE 17............

WARNING

PERSONAL INJUR Y, 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 damage,

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 (17 pages)

PAGE 1
INSTALLATION INSTRUCTIONS Fan Coils FEM4X, FEM4P, REM4X, FXM4X These instructions must be read and understood completely before attempting installation. Safety Labeling and Signal Words DANGER, WARNING, CAUTION, and NOTE Signal Words in Manuals The signal word WARNING is used throughout this manual in the following manner: The signal words DANGER, WARNING, CAUTION, and NOTE are used to identify levels of hazard seriousness.
PAGE 2
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, FXM4X INTRODUCTION Models FEM4X, FEM4P, and REM4X are for R- 410A refrigerant and can be used for upflow, horizontal left or right, and downflow applications (accessory kit required for downflow). FEM and FXM units are designed to meet cabinet air leakage of less than 2% at 0.5 inches W.C. and cabinet air leakage less than 1.4% at 0.5 inches W.C. when tested in accordance with ASHRAE 193 standard.
PAGE 3
INSTALLATION INSTRUCTIONS Figure 1 Fan Coils: FEM4X, FEM4P, REM4X, FXM4X Modular Unit Assembly A. UPFLOW INSTALLATION If return air is to be ducted through a floor, set unit on floor over opening and use 1/8 to 1/4 inch thick (3 to 6 mm thick) fireproof resilient gasket between duct, unit, and floor. Side return is a field option on slope coil models. Cut opening per dimensions shown in Figure 2. A field- supplied bottom closure is required.
PAGE 4
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, FXM4X C. DOWNFLOW INSTALLATION CAUTION ! PRODUCT OR PROPERTY DAMAGE HAZARD Failure to follow this caution may result in product or property damage. The conversion of the fan coil to downflow requires special procedures for the condensate drains on both A- coil and Slope- coil units. The vertical drains have an overflow hole between the primary and secondary drain holes.
PAGE 5
INSTALLATION INSTRUCTIONS Figure 4 Fan Coils: FEM4X, FEM4P, REM4X, FXM4X A- Coil in Horizontal Left Application (factory configuration) 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 Horizontal Right Conversion of Units With Slope Coils 1. Remove blower and coil access panel and fitting panel (refer to Figure 5). 2.
PAGE 6
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, FXM4X Horizontal Right Conversion of Units With A- Coils 1. Remove blower and coil access panel and fitting panel (refer to Figure 6). 2. Remove coil mounting screw securing coil assembly to right side casing flange. 3. Remove coil assembly. 4. Lay fan coil unit on its right side and reinstall coil assembly with condensate pan down (refer to Figure 6). 5.
PAGE 7
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, FXM4X E. MANUFACTURED HOUSING AND MOBILE HOME APPLICATIONS 1. Fan coil unit must be secured to the structure using field- supplied hardware. 2. Allow a minimum of 24 inches (610mm) clearance from access panels. 3. Recommended method of securing for typical applications: a. If fan coil is away from wall, attach pipe strap to top of fan coil using No. 10 self tapping screws.
PAGE 8
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, FXM4X ELECTRICAL CONNECTIONS These Fan Coils do not have a printed circuit board (PCB), they have a low voltage circuit protective fuse (3 amp) inline on the wire harness. Speed selections are made at the fan motor with the Blue wire. The motor is pre- programmed with the time- delay circuit on some of the speed taps.
PAGE 9
INSTALLATION INSTRUCTIONS Wiring Layout - Air Conditioning Unit (Cooling and 1- Stage Heat) Figure 10 Transformer Connections Figure 13 SECONDARY FAN COIL (CONTROL) RED R GRY G BROWN G WHT WHT BLU RED W2 C W3 VIO E BRN 208 R AIR COND. C YELLOW 230 THERMOSTAT W Fan Coils: FEM4X, FEM4P, REM4X, FXM4X BLACK C Y Y PRIMARY C.
PAGE 10
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, FXM4X To change motor speeds disconnect the BLUE fan lead from motor connector terminal #2 (factory default position) and move to desired speed tap; 1, 2, 3, or 5 (see Figure 14). Speed taps 1, 2, and 3 have a 90 second blower off time delay pre- programmed into the motor. Speed tap 4 is used for electric heat only (with 0 second blower time delay) and the WHITE wire should remain on tap 4.
PAGE 11
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, FXM4X REFRIGERANT FLOW- CONTROL DEVICE FEM4P Models: These units come equipped with a factory installed Piston metering device with Teflon ring. If a piston replacement is required, check piston size shown on indoor unit rating plate to see if it matches required outdoor piston size.
PAGE 12
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, FXM4X Prime all traps, test for leaks, and insulate in areas where sweating of the traps and drain lines could potentially cause water damage. Consult local codes for additional requirements or precautions. If a gravity drain cannot be used, install a condensate pump. Install the pump as close to the indoor section as possible.
PAGE 13
INSTALLATION INSTRUCTIONS Figure 20 R E. ELECTRIC HEAT OR EMERGENCY HEAT MODE Thermostat closes R to W. W energizes electric heat relay(s) which completes circuit to heater element(s). W also energizes the indoor blower motor. When W is de- energized, electric heat relay(s) opens and the indoor blower motor is de- energized and stops.
PAGE 14
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, FXM4X FEM / REM AIRFLOW PERFORMANCE TABLES Table 2 - Airflow Performance (CFM) MODEL & SIZE BLOWER SPEED TOTAL STATIC (inches water column) 1800 Tap 5 Tap 4 Tap 3 Tap 2 Tap 1 0.10 767 614 701 614 410 0.20 739 569 660 569 350 0.30 702 534 616 534 304 0.40 669 486 581 486 261 0.50 620 436 537 436 228 0.
PAGE 15
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, FXM4X FXM AIRFLOW PERFORMANCE - CFM at a given Speed and Static reading Model FXM4X1800 FXM4X2400 FXM4X3000 FXM4X3600 FXM4X4200 FXM4X4800 FXM4X6000 NOTES: Blower Speed Tap 5 Tap 4 Tap 3 Tap 2 Tap 1 Tap 5 Tap 4 Tap 3 Tap 2 Tap 1 Tap 5 Tap 4 Tap 3 Tap 2 Tap 1 Tap 5 Tap 4 Tap 3 Tap 2 Tap 1 Tap 5 Tap 4 Tap 3 Tap 2 Tap 1 Tap 5 Tap 4 Tap 3 Tap 2 Tap 1 Tap 5 Tap 4 Tap 3 Tap 2 Tap 1 Measured Static Pressure, inlet to outlet (inches water column) 0
PAGE 16
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, FXM4X Table 3 - Air Delivery Performance Correction Component Pressure Drop (in. wc) at Indicated Airflow (Dry to Wet Coil) CFM UNIT SIZE 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 18 0.034 0.049 0.063 — — — — — — — — — — — — — FEM4P24 — 0.049 0.063 0.076 0.089 — — — — — — — — — — — FEM4X24 & REM4X24 — 0.026 0.038 0.049 0.
PAGE 17
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X, FXM4X R- 410A QUICK REFERENCE GUIDE  R- 410A refrigerant operates at 50% - 70% higher pressures than R- 22. Be sure that servicing equipment and replacement components are designed to operate with R- 410A.  R- 410A refrigerant cylinders are rose colored.  Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.  R- 410A systems should be charged with liquid refrigerant.