‘
PF4MNB
DIRECT EXPANSION
FAN COIL UNIT
Installation Instructions
FOR R410A REFRIGERANT
SIZES 019 TO 061
NOTE
: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS
1
. . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEATER PACKAGES
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 1 -- Check Equipment
2
. . . . . . . . . . . . . . . . . . . . . . . . . .
Step 2 -- Mount Unit
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 3 -- Air Ducts
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 4 -- Electrical Connections
4
. . . . . . . . . . . . . . . . . . . . . .
Step 5 -- Refrigerant Tubing Connection and Evacuation
7
. . .
Step 6 -- Refrigerant Flow--Control Device
7
. . . . . . . . . . . . . .
Step 7 -- Condensate Drains
8
. . . . . . . . . . . . . . . . . . . . . . . . .
Step 8 -- Accessories
9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 9 -- Sequence of Operation
9
. . . . . . . . . . . . . . . . . . . . . .
START--UP PROCEDURES
9
. . . . . . . . . . . . . . . . . . . . . . . . . .
CARE AND MAINTENANCE
9
. . . . . . . . . . . . . . . . . . . . . . . .
AIRFLOW PERFORMANCE TABLES
10
. . . . . . . . . . . . . . . .
R--410A QUICK REFERENCE GUIDE
12
. . . . . . . . . . . . . . . .
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.
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 1 disconnect switch. Turn off
accessory heater power if applicable. Lock out and tag switch
with a suitable warning label.
!
WARNING
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and
wear appropriate protective clothing and gloves when
handling parts.
CAUTION
!
INTRODUCTION
Model PF4MNB Fan Coils are designed for flexibility and can be
used for upflow, horizontal, or downflow (kit required) and
manufactured and mobile home applications. These units are
designed to meet the low air leak requirements currently in effect.
Because of this, the units need special attention in the condensate
pan and drain connection area and when brazing tubing. These
units are designed specifically for R--410A refrigerant and must be
used only with R--410A refrigerant air conditioners and heat
pumps as shipped. These units are available for systems of 18,000
through
60,000
Btuh
nominal
cooling
capacity.
Factory--authorized, field--installed electric heater packages are
available in sizes 5 through 30kW. See Product Data literature for
available accessory kits.
HEATER PACKAGES
Factory--approved, field--installed, UL listed heater packages are
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.
