1
FB4, FE4, FF1E,
FH4, FV4, FX4,
PF4, FFM
Service and Maintenance Instructions
Residential Fan Coil Units
NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 1........................
INTRODUCTION 1..................................
FAN COIL DESCRIPTION AND TROUBLESHOOTING 2--19
FY5, FH4, PF4 (even sizes), and FF1E (even sizes), 2......
FB4C, FX4D, PF4 (odd sizes) and FF1E (odd sizes) 5......
FV4 7.........................................
FE4 13.......................................
FFM 18........................................
ELECTRIC HEATER FUNCTION
AND TROUBLESHOOTING 22--23.....................
FB4, FE4, FF1E, FH4, FV4, FX4, and PF4 22............
FFM 23........................................
CARE AND MAINTENANCE 23--25....................
FB4, FE4, FH4, FV4, FX4, and PF4 23.................
FF1E and FFM 24..................................
REFRIGERANT FLOW--CONTROL DEVICE 26--27.......
Thermostatic Expansion Valve (TXV) 26................
Piston Body Cleaning and Replacement 27...............
ALUMINUM COIL REPAIR 27........................
COIL & CONDENSATE PAN REMOVAL
and REPLACEMENT (FB4, FE4, FX4 and FV4) 28--29......
PURON QUICK REFERENCE GUIDE 30................
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, 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, protective clothing
and work gloves. Have a fire extinguisher available. Read these
instructions thoroughly and follow all warnings or cautions
included in literature and attached to the unit. Consult local
building codes and the current editions of the National Electrical
Code (NEC) NFPA 70.
In Canada, refer to the current editions of the Canadian Electrical
Code CSA C22.1.
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 DANGER, WARNING,and
CAUTION. 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.
UNIT OPERATION AND SAFERTY HAZARD
Failure to follow this warning could result in personal injury
or death.
Puron (R--410A) systems operate at higher pressures than
R--22 systems. Do not use R--22 service equipment or
components on R--410 equipment. Ensure service equipment
is rated for R--410.
!
WARNING
INTRODUCTION
The “F” and “PF” series fan coil units are designed for flexibility in
a variety of applications that meet upflow, horizontal, or downflow
requirements. Units are available in 1--1/2 through 5 ton nominal
cooling capacities. Factory--authorized, field--installed electric
heater packages are available in 3 through 30 kilowatts.
ELECTRICAL OPERATION 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 one disconnect switch. Turn off
accessory heater power if applicable. Lock out and tag switch
with a suitable warning label.
!
WARNING
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