Table of Contents
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INSTALLATION INSTRUCTIONS
These instructions must be read and understood completely before attempting installation.
DANGER, WARNING, CAUTION, and
NOTE
The
signal
words
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.
WARNING − 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.
TABLE OF CONTENTS
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Fan Coils
FEM4X, FEM4P, REM4X
Safety Labeling and Signal Words
DANGER,
WARNING,
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Specifications are subject to change without notice.
Signal Words in Manuals
The signal word WARNING is used throughout this
manual in the following manner:
WARNING
!
The signal word CAUTION is used throughout this
manual in the following manner:
CAUTION
!
Signal Words on Product Labeling
Signal words are used in combination with colors and/or
pictures on product labels.
2
WARNING
!
2
2
PERSONAL INJURY, AND/OR PROPERTY DAMAGE
7
HAZARD
7
Failure to carefully read and follow this warning could
result in equipment malfunction, property damage,
10
personal injury and/or death.
10
Installation or repairs made by unqualified persons could
11
result in equipment malfunction, property damage,
personal injury and/or death.
11
12
The information contained in this manual is intended for
use by a qualified service technician familiar with safety
13
procedures and equipped with the proper tools and test
13
instruments.
13
Installation must conform with local building codes and
with the National Electrical Code NFPA70 current edition.
14
16
496 01 5503 00
4/11/17
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Table of Contents
Related Manuals for HEIL FEM4X
Summary of Contents for HEIL FEM4X
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Page 1: Table Of Contents
INSTALLATION INSTRUCTIONS Fan Coils FEM4X, FEM4P, REM4X 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... -
Page 2: Introduction
ECM. With 1 (25) Combustibles FEM4X models are available for system sizes 1−1/2 − 5 tons Heaters From Supply Duct to Combustibles (18,000 − 60,000 BTUH) nominal cooling capacity. All after 3 feet models use an ECM motor and have a factory−installed and... - Page 3 INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X A. UPFLOW INSTALLATION SLOPE COIL UNITS If return air is to be ducted through a floor, set unit on floor MODEL over opening and use 1/8 to 1/4 inch thick (3 to 6 mm thick) 12”...
- Page 4 In this application, field conversion of the evaporator coil is length and width. required using accessory Downflow Kit along with an Figure 3 Slope Coil In Horizontal Left Application (FEM4X, FEM4P, REM4X factory configuration) A−COIL HORIZONTAL LEFT FIELD SUPPLIED...
- Page 5 INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X Figure 4 A−Coil in Horizontal Left Application (FEM4X, FEM4P, REM4X factory configuration) COIL FACTORY SHIPPED BRACKET HORIZONTAL LEFT APPLICATION COIL SUPPORT RAIL DRAIN PAN SUPPORT BRACKET COIL BRACKET HORIZONTAL DRAIN PAN PRIMARY DRAIN...
- Page 6 INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X Horizontal Right Conversion of Units With A−Coils d. Install filler plate (A) as shown in horizontal right application. 1. Remove blower and coil access panel and fitting panel (refer to Figure 6). e. Remove condensate troughs (C) and install on opposite tube sheets.
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Page 7: Air Ducts
5/16” lag screws. Typical both sides of fan coil. FEM4X, FEM4P, and REM4X Fan Coil models do not have a b. If fan coil is against wall, secure fan coil to wall stud printed circuit board (PCB), they have a low voltage circuit using 1/8”... - Page 8 INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X A. LINE VOLTAGE CONNECTIONS temperatures above 40_F (4_C), except for a heat pump defrost cycle. Refer to Figure 13 for typical low−voltage Fan Coils installed without electric heat require the use of a wiring with outdoor thermostat.
- Page 9 EMERGENCY HEAT RELAY selected is not lower than the minimum fan speed indicated. Wiring Layout − Heat Pump Unit FEM4X, FEM4P, and REM4X models: fan speed is Figure 13 (Cooling and 2−Stage Heat for selected at the motor connector. Units with or without Manufactured Housing) electric heaters require a minimum CFM.
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Page 10: Refrigerant Tubing
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X To change motor speeds disconnect the BLUE fan lead from 2. Insert tube into sweat connection on unit until it motor connector terminal #2 (factory default position) and bottoms. move to desired speed tap; 1, 2, 3, or 5 (see Figure 15). -
Page 11: Refrigerant Metering Device
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X CONDENSATE DRAINS and must be installed properly to ensure proper seating in the direction for cooling operation. Unit is provided with primary and secondary 3/4” (19mm) Always use outdoor units designed to match indoor fan coil NPT drain connections. -
Page 12: Accessories
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X ACCESSORIES Figure 17 Recommended Condensate Trap A. HUMIDIFIER Connect humidifier and humidistat to fan coil unit as shown in Figure 20 and Figure 21. UNIT Wiring Layout of Humidifier to Heat Figure 20 Pump 2”... -
Page 13: Sequence Of Operations
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X SEQUENCE OF OPERATIONS START−UP PROCEDURE Refer to outdoor unit Installation Instructions for system A. CONTINUOUS FAN start−up instructions and refrigerant charging method Thermostat closes R to G. G sends signal direct to motor details. -
Page 14: Airflow Performance Tables
1. Airflow based upon dry coil at 230v with factory−approved filter and electric heater (2 element heater sizes 1800 through 3600, 3 element heater sizes 4200 through 6000). For FEM4X, FEM4P, and REM4X models, airflow at 208 volts is approximately the same as 230 volts because the ECM motor is a constant torque motor. - Page 15 INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X Table 2 − Air Delivery Performance Correction Component Pressure Drop (in. wc) at Indicated Airflow (Dry to Wet Coil) 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 UNIT SIZE 0.034 0.049...
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Page 16: R−410A Quick Reference Guide
INSTALLATION INSTRUCTIONS Fan Coils: FEM4X, FEM4P, REM4X 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.