DMS FX4C Installation Instructions Manual

FX4C
FY4A
NOTE: Read the entire instruction manual before starting the

installation.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEATER PACKAGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mount Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Ducts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Refrigerant Tubing Connection and Evacuation
Refrigerant Flow- -Control Device
Condensate Drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . .
START- -UP PROCEDURES
CARE AND MAINTENANCE
PURONR (R- -410A) QUICK REFERENCE GUIDE

SAFETY CONSIDERATIONS

Improper installation, adjustment,
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
. When you see this symbol on the unit and in instruction
manuals, be alert to the potential for personal injury.
Understand the signal words
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
Installation Instructions
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alteration, service,
DANGER, WARNING,
Direct Expansion Fan Coil Units
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.
!
1
1
ELECTRICAL SHOCK HAZARD
1
Failure to follow this warning could result in personal
1
injury or death.
1
Before installing or servicing unit, always turn off all power
to unit. There may be more than 1 disconnect switch. Turn
2
off accessory heater power, if applicable.
6
6
10
Models FX4C and FY4A are designed for flexibility and can be
10
used for upflow, horizontal, or downflow (kit required) and
manufactured and mobile home applications. These units are
10
designed to meet the low air leak requirements currently in effect.
11
Because of this, the units need special attention in the condensate
13 pan and drain connection area and when brazing tubing. These
units are designed specifically for Puronr refrigerant and must be
13
used only with Puronr refrigerant air conditioners and heat
13
pumps as shipped. These units are available for systems of
18,000 through 60,000 Btuh nominal cooling capacity.
14
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.
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.
For Puronr Refrigerant
Sizes 018 To 060
WARNING

INTRODUCTION

INSTALLATION