Enviro VFC User manual

InstallatIon, operatIon & MaIntenance
SERIES B VERTICAL FLOOR
FAN COIL UNIT
New Release Form ET115.24-NOM9 (908)
B Y JOHNSONC O NTROLS
MODEL VFC/VFE/VFS

JOHNSON CONTROLS
2
FORM ET115.24-NOM9 (908)
TABLE OF CONTENTS
TABLE OF CONTENTS .................................................................................................................2
SAFETY SYMBOLS ......................................................................................................................3
SAFETY CONSIDERATIONS ........................................................................................................4
SECTION 1 - RECEIPT & INITIAL INSTALLATION......................................................................5
VF SERIES B FEATURES ......................................................................................................................5
PREFACE................................................................................................................................................5
UNPACKING & INSPECTION ...............................................................................................................6
HANDLING & INSTALLATION ..............................................................................................................6
COOLING/HEATING MEDIUM CONNECTIONS ...................................................................................7
DUCTWORK CONNECTIONS ...............................................................................................................9
ELECTRICAL CONNECTIONS .............................................................................................................9
SECTION 2 - START-UP .............................................................................................................10
GENERAL ............................................................................................................................................10
COOLING/HEATING SYSTEM ............................................................................................................10
AIR SYSTEM BALANCING .................................................................................................................10
WATER SYSTEM BALANCING ..........................................................................................................10
CONTROLS OPERATION ...................................................................................................................11
MOTOR AND FAN DATA ......................................................................................................................11
EXAMPLE WIRING DIAGRAMS ..........................................................................................................12
SECTION 3 - NORMAL OPERATION & PERIODIC MAINTENANCE ........................................14
GENERAL ............................................................................................................................................14
MOTOR/BLOWER ASSEMBLY ...........................................................................................................14
COIL .....................................................................................................................................................14
ELECTRIC RESISTANCE HEATER ASSEMBLY ................................................................................14
FAN DECK ............................................................................................................................................14
ELECTRICAL WIRING & CONTROLS ................................................................................................14
VALVES & PIPING ................................................................................................................................15
FILTERS, THROWAWAY .....................................................................................................................15
REPLACEMENT PARTS .....................................................................................................................15
FALSE BACK ASSEMBLY ...................................................................................................................16
SUB BASE ASSEMBLY AND LEVELING LEGS .................................................................................17
SECTION 4 - INSPECTION, INSTALLATION & START-UP CHECKLIST..................................18
SECTION 5 - DIMENSIONAL DRAWINGS..................................................................................19
MODEL VFC - CONCEALED FAN COIL UNIT ....................................................................................19
MODEL VFE - EXPOSED FAN COIL UNIT W/ STAMPED SUPPLY GRILLE.....................................20
MODEL VFS - EXPOSED SLOPE TOP FAN COIL UNIT W/ STAMPED SUPPLY AIR GRILLE ........21
MODEL VF - OUTSIDE AIR INLET LOCATION...................................................................................22
MODEL VFC - STANDARD DECORATOR WALL PANEL W/ STAMPED
RETURN AIR GRILLE ..........................................................................................................................23
MODEL VFC - STANDARD DECORATOR WALL PANEL W/ STAMPED
SUPPLY & RETURN AIR GRILLE........................................................................................................24
MODEL VF - OUTSIDE AIR WALL BOX ASSEMBLY .........................................................................25
MODEL VFE/VFS - STAMPED LOUVER RETURN AIR GRILLE........................................................26
MODEL VFE - EXPOSED FAN COIL UNIT W/ STAMPED SUPPLY GRILLE &
10” END POCKET EXTENSION ..........................................................................................................27
MODEL VF - ELECTRIC ENTRY & PIPING WALL PENETRATION LOCATIONS .............................28

JOHNSON CONTROLS 3
FORM ET115.24-NOM9 (908)
SAFETY SYMBOLS
The following symbols are used in this document to alert the reader to areas of potential hazard:
CAUTION identies a hazard which
could lead to damage to the machine,
damage to other equipment and/or
environmental pollution. Usually an
instruction will be given, together with
a brief explanation.
NOTE is used to highlight additional
information which may be helpful to
you.
DANGER indicates an imminently
hazardous situation which, if not
avoided, will result in death or serious
injury.
WARNING indicates a potentially
hazardous situation which, if not
avoided, could result in death or se-
rious injury.

JOHNSON CONTROLS
4
FORM ET115.24-NOM9 (908)
The equipment covered by this manual is designed for
safe and reliable operation when installed and operated
within its design specication limits. To avoid personal
injury or damage to equipment or property while
installing or operating this equipment, it is essential
that qualied, experienced personnel perform these
functions using good judgment and safe practices. See
the following cautionary statements.
ELECTRICAL SHOCK HAZARDS.
All power must be disconnected prior
to installation and serving this equip-
ment. More than one source of power
may be present. Disconnect all power
sources to avoid electrocution or shock
injuries.
MOVING PARTS HAZARDS. Mo-
tor and Blower must be disconnected
prior to opening access panels. Motors
can start automatically, disconnect
all power and control circuits prior to
servicing to avoid serious crushing or
dismemberment injuries.
HOT PARTS HAZARDS. Electric Re-
sistance heating elements must be dis-
connected prior to servicing. Electric
Heaters may start automatically, dis-
connect all power and control circuits
prior to servicing to avoid burns.
Check that the unit assembly and com-
ponent weights can be safely supported
by rigging and lifting equipment.
All assemblies must be adequately
secured during lifting and rigging by
temporary supports and restraints un-
til equipment is permanently fastened
and set in its nal location.
All unit temporary and permanent
supports must be capable of safely
supporting the equipment’s weight and
any additional live or dead loads that
may be encountered. All supports must
be designed to meet applicable local
codes and ordinances.
All fastening devices must be designed
to mechanically lock the assembly in
place without the capability of loosen-
ing or breaking away due to system
operation and vibration.
Secure all dampers when servicing
damper, actuator or linkages. Dampers
may activate automatically, disconnect
control circuits or pneumatic control
systems to avoid injury.
Protect adjacent ammable materials
when brazing, Use ame and heat pro-
tection barriers where needed. Have
re extinguisher available and ready
for immediate use.
SAFETY CONSIDERATIONS

JOHNSON CONTROLS 5
FORM ET115.24-NOM9 (908)
The equipment covered by this manual is available with
a vast variety of options and accessories. Consult the
approved unit submittal, order acknowledgement, and
other manuals for details on the options and accessories
provided with the equipment on each project.
No attempt should be made to handle,
install, or service any unit without
following safe practices regarding
mechanical equipment.
PREFACE
ENVIRO-TEC®fan coils represent a prudent investment
which can, with proper installation, operation, and
regular maintenance, give trouble-free operation and
long service.
Your equipment is initially protected under the
manufacturer’s standard warranty; however, this
warranty is provided under the condition that the steps
outlined in this manual for initial inspection, proper
installation, regular periodic maintenance, and everyday
operation of the equipment be followed in detail. This
manual should be fully reviewed in advance of any
actual work being done on the equipment. Should
any questions arise, please contact your local Sales
Representative or the factory BEFORE proceeding.
SECTION 1 - RECEIPT & INITIAL INSTALLATION
(Provided with unit mounted t-stat)
VF SERIES B FEATURES
LD13943

JOHNSON CONTROLS
6
FORM ET115.24-NOM9 (908)
All power must be disconnected before
any installation or service should be at-
tempted. More than one power source
may be supplied to a unit. Power to
remote mounted control devices may
not be supplied through the unit.
Never wear bulky or loose tting cloth-
ing when working on any mechanical
equipment. Gloves should only be
worn when required for proper pro-
tection from heat or other possible in-
jury. Safety glasses or goggles should
always be worn when drilling, cutting,
or working with chemicals such as
refrigerants or lubricants.
Never pressurize any equipment be-
yond specied operating pressures.
Always pressure test with some inert
uid or gas such as clear water or dry
nitrogen to avoid possible damage or
injury in the event of a leak or compo-
nent failure during testing.
Always protect adjacent flammable
material when welding or soldering.
Use suitable heat shield material to
contain sparks or drops of solder.
Have re extinguisher available for
use when welding or brazing.
The manufacturer assumes no responsibility for personal
injury or property damage resulting from improper
or unsafe practices during the handling, installation,
service, or operation of any equipment.
UNPACKING & INSPECTION
All units are carefully inspected at the factory throughout
the manufacturing process under a strict detailed quality
assurance program, and where possible, all major
components and subassemblies are carefully tested for
proper operation and veried to be in full compliance
with the factory manufacturing documents. Customer
furnished components such as control valves, switches
and DDC controls are not factory tested.
Each unit is carefully packaged for shipment to avoid
damage during normal transport and handling. The
equipment should always be stored in a dry place in the
proper orientation as marked on the carton.
All shipments are made F.O.B. factory and it is the
responsibility of the receiving party to inspect the
equipment upon arrival. Any obvious damage to the
carton and/or its contents should be recorded on the bill
of lading and a claim should be led with the freight
carrier.
After determining the condition of the carton exterior,
carefully remove each unit from the carton and inspect
for hidden damage. At this time check to make sure that
“furnished only” items such as switches, thermostats,
etc. are accounted for. Any hidden damage should be
recorded and immediately reported to the carrier and a
claim led as before. In the event a claim for shipping
damage is led, the unit, shipping carton, and all packing
must be retained for physical inspection by the freight
carrier.
All equipment should be stored in the factory-shipping
carton with internal packing in place until installation.
At the time of receipt, the equipment type and
arrangement should be verified against the order
documents. Should any discrepancy be found, the local
Sales Representative should be notied immediately
so that the proper action may be instituted. Should
any question arise concerning warranty repairs, the
factory must be notified BEFORE any corrective
action is taken. Where local repairs or alterations can
be accomplished, the factory must be fully informed as
to the extent and expected cost of those repairs before
work is begun. Where factory operations are required,
the factory must be contacted for authorization to return
equipment and a Return Authorization Number will be
issued. Unauthorized return shipments of equipment
and shipments not marked with an authorization number
will be refused. In addition, the manufacturer will not
accept any claims for unauthorized expenses.
HANDLING & INSTALLATION
While all equipment is designed for durability and
fabricated for sturdy construction and may present a
rugged appearance, great care must be taken to assure
that no force or pressure be applied to the coil, piping
or drain stub-outs during handling. Also, depending
on the options and accessories, some units could
contain delicate components that may be damaged by
improper handling. Wherever possible, all units should
be maintained in an upright position and handled by
the chassis as close as possible to the mounting point
locations.

JOHNSON CONTROLS 7
FORM ET115.24-NOM9 (908)
In the case of a full cabinet unit, the unit must obviously
be handled by the exterior casing. This is acceptable
providing the unit is again maintained in an upright
position and no impact forces are applied that may
damage internal components or painted surfaces. The
equipment covered in this manual IS NOT suitable
for outdoor installations. The equipment should never
be stored or installed where it may be subjected to a
hostile environment such as rain, snow, or extreme
temperatures.
During and after installation, special care must be taken
to prevent foreign material such as paint, plaster, and
drywall dust from being deposited in the drain pan or
on the motor or blower wheels. Failure to do so may
have serious adverse effects on unit operation and in
the case of the motor and blower assembly, may result
in immediate or premature failure. All manufacturers’
warranties are void if foreign material is deposited on
the motor or blower wheels of any unit. Some units and/
or job conditions may require some form of temporary
covering during construction.
While the manufacturer does not become involved
in the design and selection of support methods and
components, it should be noted that unacceptable
system operating characteristics and/or performance
may result from improper or inadequate unit structural
support. In addition, adequate clearance must be
provided for service and removal of the equipment and
its accessory components. Anchoring the equipment in
place is accomplished by using the mounting points
provided and positioning the unit to maintain the unit
on a LEVEL plane. The drain pan is internally sloped
toward the outlet connection. Care must be taken to
insure that the unit drain pan does not slope away from
the outlet connection.
The unit's drain pan is factory sloped
toward the drain connection when the
unit is installed level and plumb.
Vertical units are designed to be oor mounted or
otherwise supported from below and bolted to the wall
structure through the mounting holes provide in the
chassis. Vertical concealed units are designed to be
oor mounted or otherwise supported from below and
may be anchored directly through the cabinet back.
Units with leveling legs must be anchored through the
cabinet back.
If equipped with optional leveling legs, the legs can
be adjusted with a wrench before anchoring the unit
in place.
The type of mounting device is a matter of choice,
however the mounting point should always be that
provided in the chassis, or cabinet. Refer to the unit
product drawing for mounting hole location and
sizes.
If equipped with optional falseback spacers or subbases,
these accessories must rst be assembled and mounted
to the unit before anchoring.
After mounting the unit, it is then ready for the various
service connections such as water, drain and electrical.
At this time it should be veried that the proper types
of service are actually provided to the unit.
On those units requiring chilled water and/or hot water,
the proper line size and water temperature should be
available to the unit. In the case of refrigerant cooling,
the proper line size and refrigerant type should be
available at the unit. The auxiliary drain pan is shipped
loose for eld installation. See the Auxiliary Drain Pan
Installation Details for instructions (next page). On
units with steam heating coils, the proper line sizing
and routing should be veried and the maximum steam
pressure applied to the unit should never exceed 15
psig. The drain piping and steam trap should be sized
and routed to allow for proper condensate ow. The
electrical service to the unit should be compared to
the unit nameplate to verify compatibility. The routing
and sizing of all piping, and the type and sizing of all
wiring and other electrical components such as circuit
breakers, disconnect switches, etc. should be determined
by the individual job requirements and should not be
based on the size and/or type of connection provided
on the equipment. All installations should be made in
compliance with all governing codes and ordinances.
Compliance with all codes is the responsibility of the
installing contractor.
COOLING/HEATING MEDIUM CONNECTIONS
Toxic residues and loose particles
resulting from manufacturing and
eld piping techniques such as joint
compounds, soldering ux, and metal
shavings may be present in the unit
and the piping system. Special con-
sideration must be given to system
cleanliness when connecting to solar,
domestic or potable water systems.

JOHNSON CONTROLS
8
FORM ET115.24-NOM9 (908)
Submittals and Product Catalogs detailing unit operation,
controls, and connections should be thoroughly
reviewed BEFORE beginning the connection of the
various cooling and/or heating mediums to the unit. All
documentation may be found at www.enviro-tec.com.
All accessory valve packages should be installed as
required, and all service valves should be checked for
proper operation.
If coil and valve package connections are to be made
with “sweat” or solder joint, care should be taken to
assure that no components in the valve package are
subjected to a high temperature which may damage seals
or other materials. Many two-position electric control
valves, depending on valve operation, are provided with
a manual-opening lever. This lever should be placed
in the “open” position during all soldering or brazing
operations. Valve bodies should be wrapped with a wet
rag to help dissipate heat encountered during brazing.
If the valve package connection at the coil is made with
a union, the coil side of the union must be prevented
from twisting (“backed up”) during tightening to prevent
damage to the coil tubing. Over-tightening must be
avoided to prevent distorting the union seal surface and
destroying the union.
In the case of eld installed valves and piping, the
chilled water valve cluster (or expansion valve on DX
units) should be installed in such a way that any dripping
or sweating is contained in the auxiliary drain pan or
other device.
After the connections are completed, the system should
then be tested for leaks. Since some components are not
designed to hold pressure with a gas, hydronic systems
should be tested with water.
All water coils must be protected from
freezing after initial lling with water.
Even if the system is drained, unit coils
may still hold enough water to cause
damage when exposed to temperatures
below freezing.
Refrigerant systems should be tested with dry nitrogen
rather than air to prevent the introduction of moisture
into the system. In the event that leaking or defective
components are discovered, the Sales Representative
must be notied BEFORE any repairs are attempted.
All leaks should be repaired before proceeding with
the installation.
UPPER SUPPORT TABS
FLOAT SWITCH MOUNT
SEE NOTE 4
SEE NOTE 4
LOWER SUPPORT
TABS
SECTION A-A
NOTE:
INSTALLING CONTRACTOR MUST ASSURE
THAT THE CONNECTED DRAIN PIPING
MAINTAINS THE PROPER PAN ORIENTATION.
NOTES:
1. BEND LOWER SUPPORT TABS DOWN 90º.
2. BEND UPPER SUPPORT TABS UP 90º.
3. POSITION DRAIN PAN IN PLACE AND THEN BEND UPPER SUPPORT TABS DOWN UNTIL PAN IS SECURE.
4. BEND FLOAT SWITCH MOUNT OUT 90º IF NEEDED.
5. STANDARD PAN SHOWN, TYPICAL FOR EXTENDED PAN.
LD13944

JOHNSON CONTROLS 9
FORM ET115.24-NOM9 (908)
After system integrity has been established the piping
should be insulated in accordance with the project
specications. ALL chilled water piping and valves or
refrigerant suction piping not located over drain pans
must be insulated to prevent damage from sweating.
This includes factory and eld piping inside the unit
cabinet.
The drain should always be connected and piped to an
acceptable disposal point. For proper moisture carry-
off, the drain piping should be sloped away from the
unit at least 1/8" per foot. A drain trap may be required
by local codes and it is strongly recommended for odor
containment.
DUCTWORK CONNECTIONS
All ductwork and/or supply and return grilles should
be installed in accordance with the project plans and
specications. If not included on the unit or furnished
from the factory, supply and return grilles should be
provided as recommended in the product catalog.
All units must be installed in non-combustible areas.
Some models are designed to be connected to duct-work
with a MINIMUM amount of external static pressure.
These units may be damaged by operation without the
proper ductwork connected. Consult the approved
submittals and the product catalog for unit external
static pressure limitations.
Units provided with outside air for ventilation should
have some form of low temperature protection to
prevent coil freeze-up.
It should be noted that none of these methods would
adequately protect a coil in the event of power failure.
The safest method of freeze protection is to use glycol
in the proper percent solution for the coldest expected
air temperature.
The manufacturer assumes no responsibility for
undesirable system operation due to improper
design, equipment or component selection, and/or
installation of ductwork, grilles, and other eld supplied
components.
ELECTRICAL CONNECTIONS
The unit nameplate lists the unit electrical characteristics
such as the required supply voltage, fan and heater
amperage and required circuit ampacities. The unit-
wiring diagram shows all unit and eld wiring. Since
each project is different and each unit on a project may
be different, the installer must be familiar with the
wiring diagram and nameplate on the unit BEFORE
beginning any wiring. All components furnished for
eld installation, by either the factory or the controls
contractor should be located and checked for proper
function and compatibility. All internal components
should be checked for shipping damage and all electrical
connections should be tightened to minimize problems
during start-up.
Any devices such as fan switches or thermostats
that have been furnished from the factory for eld
installation must be wired in strict accordance with the
applicable wiring diagrams. Failure to do so could result
in personal injury or damage to components and will
void all manufacturers’ warranties.
The fan motor(s) should never be controlled by any
wiring or device other than the factory furnished
switch, thermostat/switch combination, without factory
authorization.
All eld wiring should be done in accordance with
governing codes and ordinances. Any modication of
the unit wiring without factory authorization will result
in voiding of all factory warranties and will nullify any
agency listings.
The manufacturer assumes no responsibility for any
damages and/or injuries resulting from improperly eld
installed or wired components.

JOHNSON CONTROLS
10
FORM ET115.24-NOM9 (908)
SECTION 2 - START-UP
GENERAL
Before beginning any start-up operation, the start-
up personnel should familiarize themselves with the
unit, options and accessories, and control sequence to
understand the proper system operation. All personnel
should have a good working knowledge of general
start-up procedures and have the appropriate start-up
and balancing guides available for consultation.
The initial step in any startup operation should be a nal
visual inspection. All equipment, plenums, duct-work,
and piping should be inspected to verify that all systems
are complete and properly installed and mounted, and
that no debris or foreign articles such as paper or drink
cans are left in the units or other areas. Each unit should
be checked for loose wires, free blower wheel operation,
and loose or missing access panels or doors. Except as
required during start-up and balancing operations, no
fan coil units should be operated without all the proper
ductwork attached, supply and return grilles in place,
and all access doors and panels in place and secure.
A clean lter of the proper size and type must also be
installed. Failure to do so could result in damage to the
equipment or building and furnishings, and/or void all
manufacturers’ warranties.
COOLING/HEATING SYSTEM
Prior to the water system start-up and balancing, the
chilled/hot water systems should be ushed to clean
out dirt and debris, which may have collected in the
piping during construction. During this procedure,
all unit service valves must be in the closed position.
This prevents foreign matter from entering the unit and
clogging the valves and metering devices. Strainers
should be installed in the piping mains to prevent
this material from entering the units during normal
operation.
During system filling, air venting from the unit is
accomplished by the use of the standard, manual or
optional automatic air vent tting installed on the coil.
In the case of the manual air vent tting, the screw
should be turned counterclockwise no more than 1-1/2
turns to operate the air vent. Automatic air vents may
be unscrewed one turn counterclockwise to speed initial
venting but should be screwed in for automatic venting
after start-up operations.
The air vent provided on the unit is not
intended to replace the main system air
vents and may not release air trapped
in other parts of the system. Inspect the
entire system for potential air traps and
vent those areas as required, indepen-
dently. In addition, some systems may
require repeated venting over a period
of time to properly eliminate air from
the system.
AIR SYSTEM BALANCING
All ductwork must be complete and connected, and all
grilles, lters, access doors and panels must be properly
installed to establish actual system operating conditions
BEFORE beginning air balancing operations.
Each individual unit and attached ductwork is a unique
system with its own operating characteristics. For this
reason, balance specialists who are familiar with all
procedures required to properly establish air distribution
and fan system operating conditions normally do air
balancing. Unqualied personnel should not attempt
these procedures. Exposed units with no ductwork do
not require air balancing other than selecting the desired
fan speed.
After the proper system operation is established,
the actual unit air delivery and the actual fan motor
amperage draw for each unit should be recorded in
a convenient place for future reference such as the
inspection, installation, & start-up check sheet, a copy
of which is provided at the back of this manual. Contact
the Sales Representative or the factory for additional
copies of this sheet.
WATER SYSTEM BALANCING
A complete knowledge of the hydronic system, its
components, and controls is essential to proper water
system balancing and this procedure should not be
attempted by unqualied personnel. The system must
be complete and all components must be in operating
condition BEFORE beginning water system balancing
operations.

JOHNSON CONTROLS 11
FORM ET115.24-NOM9 (908)
Each hydronic system has different operating
characteristics depending on the devices and controls
in the system. The actual balancing technique may vary
from one system to another.
After the proper system operation is established, the
appropriate system operating conditions such as various
water temperatures and ow rates should be recorded
in a convenient place for future reference such as the
inspection, installation, & start-up check sheet, a copy
of which is provided on the back of this manual. Contact
the Sales Representative or the factory for additional
copies of this sheet.
Before and during water system balancing, conditions
may exist which can result in noticeable water
noise or undesired valve operation due to incorrect
system pressures. After the entire system is balanced,
these conditions will not exist on properly designed
systems.
CONTROLS OPERATION
Before proper control operation can be veried all other
systems must be in proper operation. The correct water
and air temperatures must be present for the control
function being tested. Some controls and features are
designed to not operate under certain conditions.
A wide range of controls and electrical options and
accessories may be used with the equipment covered
in this manual. Consult the approved unit submittals,
order acknowledgement, and other manuals for detailed
information regarding each individual unit and its
controls. Since controls and features may vary from
one unit to another, care should be taken to identify
the controls to be used on each unit and their proper
control sequence. Information provided by component
manufacturers regarding installation, operation, and
maintenance of their individual controls is available
upon request.
MOTOR AND FAN DATA
UNIT
SIZE
FAN
SPEED
MOTOR
H.P.
(QTY.)
# OF
FANS
115VOLTS 208-230 VOLTS 277 VOLTS
AMPS WATTS AMPS WATTS AMPS WATTS
20
High (1) 1/30
1
0.8 57 0.6 77 0.3 71
Medium (1) 1/50 0.4 39 0.3 49 0.3 48
Low (1) 1/60 0.3 33 0.3 43 0.3 41
25
High (1) 1/15
1
1.1 125 0.5 120 0.5 120
Medium (1) 1/30 0.9 90 0.3 80 0.3 80
Low (1) 1/60 0.5 60 0.2 60 0.2 60
30
High (1) 1/10
2
1.9 165 0.8 158 0.8 162
Medium (1) 1/30 0.8 76 0.3 75 0.5 65
Low (1) 1/60 0.5 47 0.2 54 0.4 41
40
High (1) 1/6
2
2.5 261 1.4 284 1.0 254
Medium (1) 1/12 1.5 162 0.5 171 0.5 152
Low (1) 1/40 0.8 75 0.4 79 0.3 74
50
High (1) 1/8
3
1.7 215 0.9 216 0.8 214
(1) 1/6 2.5 257 1.4 233 1.0 255
Medium (1) 1/15 1.3 145 0.6 109 0.5 132
(1) 1/12 1.5 156 0.5 106 0.5 151
Low (1) 1/40 0.3 69 0.3 63 0.3 86
(1) 1/40 0.6 75 0.3 62 0.3 84
60
High (1) 1/6
4
5.0 522 2.8 568 2.0 508
Medium (1) 1/12 3.0 324 1.0 342 1.0 304
Low (1) 1/40 1.2 150 0.6 158 0.6 148
NOTES:
1. Motor electrical data is nameplated data. Actual data will vary with application.
2. 230 volt motor is nameplated for 208-230/1/60. Use 230 volt motor data for 208 volt applications.
3. Unit size 30, 208-230 and 277 volt motors are 1/12 HP at high tap.

JOHNSON CONTROLS
12
FORM ET115.24-NOM9 (908)
EXAMPLE WIRING DIAGRAMS
"Example Wiring Diagram - Typical 24 VAC Control Drawing (Refer to unit control enclosure for actual order-specic drawing)"
84-10-0615-REV05

JOHNSON CONTROLS 13
FORM ET115.24-NOM9 (908)
"Example Wiring Diagram - Typical 24 VAC Control Drawing (Refer to unit control enclosure for actual order-specic drawing)"
84-10-0205-REV05
EXAMPLE WIRING DIAGRAMS (Continued)

JOHNSON CONTROLS
14
FORM ET115.24-NOM9 (908)
SECTION 3 - NORMAL OPERATION & PERIODIC MAINTENANCE
GENERAL
Each unit on a job will have its own unique operating
environment and conditions that may dictate a
maintenance schedule for that unit that is different
from other equipment on the job. A formal schedule of
regular maintenance and an individual unit log should
be established and maintained. This will help to achieve
the maximum performance and service life of each unit
on the job.
Information regarding safety precau-
tions contained in the preface at the
beginning of this manual should be
followed during any service and main-
tenance operations.
For more detailed information concerning service
operations, consult your Sales Representative or the
Factory.
MOTOR/BLOWER ASSEMBLY
The type of fan operation is determined by the control
components and their method of wiring, and may vary
from unit to unit. Refer to the wiring diagram for each
unit for that unit’s individual operating characteristics.
Motors are permanently lubricated, PSC type and do not
require eld lubrication.
Should the assembly require more extensive service,
the motor/blower assembly may be removed from the
unit to facilitate such operations as motor or blower
wheel/housing replacement, etc. Dirt and dust should
not be allowed to accumulate on the blower wheel or
housing. This can result in an unbalanced blower wheel
condition that can damage a blower wheel or motor.
The wheel and housing may be cleaned periodically
using a vacuum cleaner and a brush taking care not to
dislodge the factory balancing weights on the blower
wheel blades.
COIL
Coils may be cleaned in place by removing the motor/
blower assemblies and brushing the entering air face
between ns with a stiff brush. Cleaning with a vacuum
cleaner should follow brushing. If a compressed air
source is available, the coil may also be cleaned by
blowing air through the coil fins from the leaving
air face. Vacuuming should again follow this. Units
provided with the proper type of air lters, replaced
regularly, will require coil cleaning.
ELECTRIC RESISTANCE HEATER ASSEMBLY
Electric resistance heaters typically require no normal
periodic maintenance when unit air lters are changed
properly. Other conditions and equipment may affect the
operation and service life in the system. The two most
important operating conditions for an electric heater are
proper airow and proper supply voltage. High supply
voltage and/or poorly distributed or insufcient airow
over the element will result in element overheating. This
condition may result in the heater cycling on the high
limit thermal cutout
Sheathed type heaters provided have an automatic
reset switch with a back-up high limit thermal switch.
Automatic reset switches are as the name implies; they
reset automatically after the heater has cooled down.
High limit thermal switches must be replaced once the
circuit has been broken. The high limit thermal cutout
device is a safety device only and is not intended for
continuous operation. With proper unit application and
during normal operation, the high limit thermal cutout
will not operate. This device only operates when some
problem exists and ANY condition that causes high limit
cutout MUST be corrected immediately. High supply
voltage also causes excessive amperage draw and may
result in tripping of the circuit breaker or blowing of
the fuses on the incoming power supply.
FAN DECK
The fan/drain pan assembly is easily removable for
service access to motors and blowers at, or away from,
the unit.
ELECTRICAL WIRING & CONTROLS
The electrical operation of each unit is determined by
the components and wiring of the unit and may vary
from unit to unit. Consult the wiring diagram for the
actual type and number of controls provided on each
unit. The integrity of all electrical connections should be
veried at least twice during the rst year of operation.
Afterwards, all controls should be inspected regularly
for proper operation. Some components may experience
erratic operation or failure due to age. Wall thermostats
may also become clogged with dust and lint and should
be periodically inspected and cleaned to provide reliable
operation.

JOHNSON CONTROLS 15
FORM ET115.24-NOM9 (908)
When replacing any components such as fuses,
contactors, or relays, use only the exact type, size, and
voltage component as furnished from the factory. Any
deviation without factory authorization could result
in personnel injury or damage to the unit and will
void all factory warranties. All repair work should be
done in such a manner as to maintain the equipment in
compliance with governing codes and ordinances or
testing agency listings.
More specific information regarding the use and
operating characteristics of the standard controls offered
by this manufacturer is contained in other manuals.
VALVES & PIPING
No formal maintenance is required on the valve package
components most commonly used with fan coil units
other than a visual inspection for possible leaks in the
course of other normal periodic maintenance. In the
event that a valve should need replacement, the same
precautions taken during the initial installation to protect
the valve package from excessive heat should also be
used during replacement.
FILTERS, THROWAWAY
The type of throwaway lter most commonly used on
fan coil units should be replaced on a regular basis.
The time interval between each replacement should
be established based on regular inspection of the lter
and should be recorded in the log for each unit. Refer
to the product catalog for the recommended lter size
for each product type and size. If the replacement
lters are not purchased from the factory, the lters
used should be the same type and size as that furnished
from or recommended by the factory. Pleated media
or extended surface lters should not be used since the
high air pressure drops encountered with these types
of lters is not compatible with the type of fan coil
unit covered in this manual. Consult the factory for
applications using lter types other than the factory
standard or optional product.
DRAIN
The drain should be checked before initial start-up and
at the beginning of each cooling season to assure that the
lines are clear. If it is clogged, steps should be taken to
clear the debris so that condensate will ow easily.
Periodic checks of the drain should be made during the
cooling season to maintain a free owing condensate.
Should the growth of algae and/or bacteria be a concern,
consult an air conditioning and refrigeration supply
organization familiar with local conditions for chemicals
available to control these agents.
REPLACEMENT PARTS
Factory replacement parts should be used wherever
possible to maintain the unit performance and
operating characteristics and the testing agency listings.
Replacement parts may be purchased through the local
Sales Representative.
Contact the local Sales Representative or the factory
before attempting any unit modifications. Any
modications not authorized by the factory could result
in personnel injury and damage to the unit and could
void all factory warranties.
When ordering parts, the following information must be
supplied to ensure proper part identication:
1. Complete unit model number.
2. Unit hand connection (right or left hand) while
facing into the return air stream.
3. Complete part description including any num-
bers.
On warranty replacements, in addition to the information
previously listed, the project CO # that appears on the
unit nameplate, is required. Contact the factory for
authorization to return any parts such as defective parts
replaced in warranty. All shipments returned to the
factory MUST be marked with a Return Authorization
Number, which is provided by the factory.
All equipment and components sold through the Parts
Department are warranted under the same conditions
as the standard manufacturer's warranty with the
exception that the warranty period is 12 months unless
the component is furnished as warranty replacement.
Parts furnished as warranty replacements are warranted
for the remaining term of the original unit warranties.

JOHNSON CONTROLS
16
FORM ET115.24-NOM9 (908)
FALSE BACK ASSEMBLY
(Shipped loose and Dissassembled)
Screw, #8 x 1/2” TEK
6 plcs
Bottom Tie Angle
Installs Inside Side
Panels
Rear Panel
Screw, #8 x 1/2” TEK
Typ.
LD13945

JOHNSON CONTROLS 17
FORM ET115.24-NOM9 (908)
SUB BASE ASSEMBLY AND LEVELING LEGS
LD13946

JOHNSON CONTROLS
18
FORM ET115.24-NOM9 (908)
LD13941
SECTION 4 - INSPECTION, INSTALLATION & START-UP CHECKLIST

JOHNSON CONTROLS 19
FORM ET115.24-NOM9 (908)
SECTION 5 - DIMENSIONAL DRAWINGS
MODEL VFC - CONCEALED FAN COIL UNIT
51-80004-REV01

JOHNSON CONTROLS
20
FORM ET115.24-NOM9 (908)
MODEL VFE - EXPOSED FAN COIL UNIT W/ STAMPED SUPPLY GRILLE
51-80003-REV03