IEC Vertical F*C, FHC, FXC, FVC Installation, Operation & Maintenance Manual
IEC Vertical F*C Series Fan Coils
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
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IEC Vertical F*C Series Fan Coils
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
International Environmental Corporation • Vertical F*C Series Fan Coil Installation, Operation, & Maintenance Manual
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IEC Vertical F*C Series Fan Coils
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
Table of Contents
4 SECTION 1 – Introduction
4 Safety
5 SECTION 2 – Pre-Installation
Unpacking and Inspection
5 Prepare Jobsite for Unit Installation
5 Identify and Prepare Units
5 Protect Units from Damage
7 SECTION 3 – Installation
7 Place Units In Position
8 Cooling/Heating Pipe Connections
9 Field Piping Connections
10 Steam Drain Connections
10 Leak Testing
10 Refrigerant Coil Testing
10 Piping Insulation
10 Condensate Drain
11 Electrical Connections
12 Factory Installed Options
12 Condensate Overow switch
12 Standard Wiring Packages
15 Connecting Ductwork
16 Exposed Unit Finish Touch-up and Repaint
16 Make Final Preparations
16 SECTION 4 – Startup
17 Cooling/Heating System
17 Air Balance System
17 Water Balancing System
18 Water Treatment
18 Eco-telligent® Motor
19 Controls Operation
19 SECTION 5 – Service/Maintenance
General
19 Motor/Blower Assembly
20 Coil
20 Electric Resistance Heater Assembly
20 Electrical Wiring and Controls
21 Valves and Piping
21 Filters, Throwaway
21 Filters, Permanent
21 Drain
21 Replacement Parts
23 SECTION 6 – Equipment Startup Check List
23 Receiving and Inspection
23 Handling and Installation
23 Cooling/Heating Connections
23 Ductwork Connections
23 Electrical Conditions
23 Unit Startup
International Environmental Corporation (IEC) works continually
to improve its products. As a result, the design and specications
of each product may be changed without notice and may not be
as described herein. Please contact IEC for information regarding
current design and product specications. Statements and other
information contained herein are not express warranties and do not
form the basis of any bargain bet ween the parties but are merely IEC’s
opinion or commendation of its products. Manufacturer’s standard
limited warranty applies.
International Environmental Corporation • Vertical F*C Series Fan Coil Installation, Operation, & Maintenance Manual
23 Motor
24 Appendix A
25 Appendix B
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Adjustment of ICM AW4105
Adjustment of EVO/ECM-4SPD
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IEC Vertical F*C Series Fan Coils
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
SECTION 1 – Introduction
International Environmental Corporation (IEC) fan coil
units represent a prudent investment oering troublefree operation and long service with proper installation,
operation, and regular maintenance. The equipment
covered by this manual is available with a variety of
options and accessories. Always consult the approved unit
submittals, order acknowledgement, and other manuals
for specic details on unit options and accessories. Always
follow proper procedures related to safety, handling,
installation, operation, and servicing of mechanical
equipment as 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.
Safety
IEC 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, commissioning, regular periodic
maintenance, and everyday operation of the
equipment be followed in detail. This manual should
be fully reviewed and understood in advance of initial
installation, startup, and any maintenance. Should
any questions arise, please contact your local Sales
Representative or the factory BEFORE proceeding.
Install approved Lock-Out/Tag-Out protection devices
on ALL incoming power sources to equipment being
installed or serviced prior to beginning any work. Always
verify all incoming power sources are de-energized
using an electrical multi-meter.
CAUTION: Never wear bulky or loose tting
clothing when working on any mechanical
equipment. Gloves should always be worn for
protection against sharp sheet metal edges, heat, and
other possible injuries. Safety glasses or goggles should
always be worn, especially when drilling, cutting, or
working with refrigerants, lubricants or cleaning chemicals.
WARNING: Never pressurize any equipment beyond
specied test pressures listed on the unit rating plate.
Always pressure test with an inert uid or gas such as clear
water or dry nitrogen to avoid possible damage or injury
in the event of a leak or component failure during testing.
CAUTION: Always protect adjacent ammable
material when welding or soldering. Use a
suitable heat shield material to contain sparks or
drops of solder. Have a re extinguisher readily available.
CAUTION: Always protect chilled and hot water
valve bodies, strainers, ball valves, and other
ow control related devices from heat caused
by soldering or brazing processes by wrapping these
devices in cold or damp rags.
WARNING: NO ATTEMPT SHOULD BE MADE TO
HANDLE, INSTALL, OR SERVICE ANY UNIT WITHOUT
FOLLOWING SAFE PRACTICES REGARDING
MECHANICAL EQUIPMENT.
The equipment must always be properly supported.
Temporary supports used during installation or service
must be adequate to hold the equipment securely.
CAUTION: All power must be disconnected
before any installation or service is attempted.
More than one power source may be supplied to
a unit. Power to remote mounted control devices may
not be supplied through the unit.
International Environmental Corporation • Vertical F*C Series Fan Coil Installation, Operation, & Maintenance Manual
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Safety should always be the rst priority when handling,
installing, operating or servicing mechanical equipment.
Always follow all safety codes, procedures and protocols.
Consult applicable local building codes and National
Electrical Codes (NEC) for special requirements. Be alert
to safety information: symbols, words such as DANGER,
WARNING and CAUTION.
Improper installation, adjustment, service, maintenance,
or use can cause explosion, re, electrical shock, or other
conditions, which may result in personal injury or property
damage. This product must be installed only by personnel
with the training, experience, skills, and applicable licensing
that makes him/her “a qualied professional HVACR installer.”
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IEC Vertical F*C Series Fan Coils
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
SECTION 2 – Pre-Installation
Unpacking and Inspection
All units are carefully inspected at the factory throughout
the manufacturing process under a strict detailed quality
assurance program. All major components and subassemblies are carefully tested for proper operation
and veried for full compliance with factory standards.
Operational testing of some customer-furnished
components such as DDC controls, pneumatic control valves
and switches may be a possible exception.
Each unit is carefully packaged for shipment to avoid
damage during normal transit and handling. Equipment
should always be stored in a dry and covered place, and in
the proper orientation as marked on the carton.
All shipments are made F.O.B. ex-factory and it is the
responsibility of the receiving party to inspect the
equipment upon arrival. Any obvious damage to the
packaging and/or its contents should be recorded on the bill
of lading and a claim led with the freight carrier.
Where local repairs or alterations can be accomplished, the
factory must be fully informed of 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, any
claims for unauthorized expenses will not be accepted by
the manufacturer.
Prepare Jobsite for Unit Installation
To save time and to reduce the possibility of costly errors,
set up a complete sample installation in a typical room at
the jobsite. Check all the critical dimensions such as eld
piping, wiring, and duct connection to ensure they agree
with job requirements. Refer to job drawings and product
dimension drawings as required (See Figure 1 for sample
drawing). Instruct all trades in their part of the installation.
Should any discrepancies be discovered, contact your local
representative before continuing with unit installations.
After determining the condition of the packaging 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, valves, thermostats,
etc. are accounted for. Any hidden damage or missing
components should be recorded and immediately reported
to the carrier and a claim led. 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 shall be stored in the
factory shipping carton with internal packing in place until
installation.
At the time of receipt, the equipment type and
arrangement shall be veried against the order
documents. Should any discrepancy be found, the local
Sales Representative shall be notied immediately so
that proper action may be taken.
Should any questions arise concerning eld warranty
repairs, the factory must be notied BEFORE any
corrective action is taken.
Identify and Prepare Units
For each unit, conrm incoming and control power
requirements match available power source. Refer to unit
nameplate and wiring diagram.
1. Check all tags on unit to determine if shipping screws
are to be removed. Remove screws as directed.
2. Rotate the fan wheel by hand to ensure that the fan is
unrestricted and can rotate freely. Check for shipping
damage and fan obstructions. Adjust blower wheel as
required.
3. Perform “Dry Fit” of valve assembly that may be
shipped unattached to unit coil assembly. Should any
questions arise on fit up please contact your local
representative immediately.
Protect Units from Damage
All equipment is designed and fabricated with robust
materials and present a rugged appearance. Still, great care
must be taken to assure that no force or pressure is applied
to the coil, piping or drain stub-outs during handling.
International Environmental Corporation • Vertical F*C Series Fan Coil Installation, Operation, & Maintenance Manual
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IEC Vertical F*C Series Fan Coils
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
STANDARD STAMPED
SUPPLY GRILLE
5
E
(127)
2
(DIMENSION FROM MOUNTING HOLE)
(51)
2-1/2
(64)
9
(229)
9-1/2
(241)
3-3/4
25
(635)
1/2" (13) MTG. HOLES
(TYP. OF 4)
(102)
9-1/4
11-3/4
4
(235)
(298)
3-3/4
5
E
(95)
(127)
D
TOP VIEW
(229)
9-1/2
(241)
OPTIONAL
CONTROL BOX SHOWN
(STD BOX IS 2X4)
RETURN AIR OPENING
9
C
MOUNTING HOLES
B
A
REMOVABLE FRONT
ACCESS PANEL
FRONT VIEW
CONTROL ACCESS
DOOR STD. (2)
(OPTIONS AVAILABLE)
(95)
1/4 TURN PANEL
FASTENER TYP.
SUPPLY & RETURN
WATER CONNECTIONS
DRAIN TROUGH
PLASTIC AUXILIARY 7X7
DRAIN PAN WITH
3/4" (19) MPT CONNECTION
4
(102)
(DIMENSION FROM INSIDE CASE LEG)
1" (25) FILTER
RETURN
AIR VENT
AIR
1-1/2
(38)
2-7/8
(73)
3/4
(19)
RIGHT SIDE VIEW
5-3/4
(146)
SUPPLY
AIR
8-1/4
(229)
(210)
9
REVISION HISTORY
REV
04/29/13
- 13-0801
05/22/13
A 13-0958
B 13-0981
05/24/13
06/05/13
C 13-1073
D 13-1843
09/03/13
09/11/14
E 14-1984
1-3/4
(45)
SEE TECHNICAL
CATALOG FOR
DIMENSIONAL DETAILS
16-1/8
(410)
14-1/2
(368)
4-1/2
(114)
ECNDATE
NOTES:
1. R.H. SHOWN, L.H. OPPOSITE.
2. ALL DIMENSIONS ± 1/4" (6).
3. PRODUCT SPECIFICATIONS ARE SUBJECT TO
CHANGES WITHOUT NOTICE.
UNIT
SIZE BA C D E
FXC
FXC
FXC
FXC
FXC
FXC
FXC
FXC
02
41 (1041)
03
04
51 (1295)
05
06
61 (1549)
08
63 (1600)
10
77 (1956)
12
85 (2159)
22 (559)
32 (813)
32 (813)
42 (1067)
44 (1118)
58 (1473)
66 (1676)
DIMENSIONS-INCHES (MM)
23 (584) 17-1/4 (438) 3-1/8 (79)
23 (584) 17-1/4 (438) 3-1/8 (79)41 (1041) 22 (559)
33 (838) 26 (660)
33 (838) 26 (660) 3-3/4 (95)51 (1295) 12
43 (1092) 39 (991)
45 (1143) 39 (991)
59 (1499) 52-1/8 (1324)
67 (1702) 61 (1549)
Figure 1: Example of Submittal Drawing
Depending on the options and accessories, some units
may contain delicate components that may be damaged
by improper handling. Whenever possible, all units shall
be maintained in an upright position, and handled by the
chassis or as close as possible to the unit mounting-point
locations. In the case of a full cabinet unit, the unit must be
handled by the exterior casing. This is acceptable provided
the unit is again maintained in an upright position, and no
force is applied that may damage internal components or
painted surfaces.
The equipment covered in this manual IS NOT suitable for
outdoor installations. The equipment is never to be stored or
CLASSIC
TITLE
MODEL
FXC
CABINET
E
SHEETREVISION
OF
1
1
3-3/4 (95)
2-1/4 (57)
3-1/4 (83)
3-5/8 (92)
3-1/4 (83)
QUANTITY/UNIT
BLWR MOTOR
1
1
2
2
2
4
4
1
1
1
1
1
2
2
JOB NUMBER
JOB NAME
DRAWN BY
B. CHILDS
DRAWING NUMBER
I100-90017694
installed where it may be subjected to a hostile environment
such as rain, snow, or extreme temperatures.
Before, during, and after installation, take specic care to
prevent foreign material such as paint, plaster, and drywall
dust from being deposited in the drain pan, on the motor
or blower wheels and cooling/heating coils. Failure to do
so may have serious adverse eects 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 allowed to be
deposited in the drain pan or on the motor or blower wheels
of any unit. Some units and/or job conditions may require
some form of temporary covering during construction.
International Environmental Corporation • Vertical F*C Series Fan Coil Installation, Operation, & Maintenance Manual
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IEC Vertical F*C Series Fan Coils
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
While the manufacturer is not involved in the design and
selection of support methods and components, it shall 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, consult local
codes. See Figure 2 for minimum recommendation for
clearances by manufacturer. Anchoring the equipment
in place is accomplished by using the mounting points
provided, and positioning the unit to maintain the drain pan
on a LEVEL plane. Care must be taken to insure that the unit
drain pan does not slope away from the outlet connection.
Vertical unit models FHC, FXC, FVC are designed to be oor
mounted or otherwise supported from below, and bolted
to the wall or oor structure through the mounting holes
provided in the chassis. These units may be wall hung only
when originally ordered from the factory for wall-mount
applications.
The type of mounting device is a matter of choice; however,
the mounting point shall always be that provided in the
chassis or cabinet. Refer to the unit product drawings for
hole mounting locations and sizes.
After mounting, the unit is then ready for the various service
connections such as water, drain and electrical. At this time,
verify that the proper types of service are actually provided
to the unit. On units requiring chilled water and/or hot
water, verify the proper line size and water temperature are
available to the unit.
SECTION 3 – Installation
Place Units In Position
F*C UNITS
1. Select the unit location. Allow adequate space for
free air circulation, service clearances, piping and
electrical connections, and any necessary ductwork.
For specific unit dimensions, refer to the submittal
drawing for your model. Allow clearances according to
local and national electric codes. See Figure 2 for basic
minimum clearance recommendations.
2. Make sure the floor is able to support the weight of
the unit. See Table 1 for nominal unit weight.
3. Ensure wall behind unit is smooth and plumb; if
necessary, install furring strips on walls with irregular
surfaces or mullions. Furring strips must be positioned
behind mounting holes in unit (FHC, FXC, FVC units).
Fasteners, furring strips, and other seals (if required)
must be field-supplied.
4. Remove all wall and floor moldings from behind the
unit.
5. Ensure FHC top panel (under window application)
and FXC, FVC front panel has been removed from unit
to obtain access to the four 0.75-in. mounting holes.
Fasteners and other required hardware must be fieldsupplied.
6. Move unit into position. Ensure unit is level or slightly
pitched towards drain to ensure proper drainage and
operation.
Unit Size F*C 02 03 04 05 06 08 10 12
Nominal Air
Flow (cfm)
FHC 42 47 57 60 77 79 108 127
FXC 63 68 82 85 99 101 133 154
FVC 64 69 83 86 100 102 135 156
Coil Weight w/Water (Approx. lbs per row of coil)
FHC/FXC/FVC 0.4 0.5 0.6 0.8 1.0 1.1 1.8 2.1
Coils 5.7 7.4 7.6 11.6 14.5 15.1 24.5 27.7
FPI 12 FPI
Coil Face Area
(sq ft)
Motor (Qty)
FHC/FXC/FVC
Blower (Qty)
FHC/FXC/FVC
FHC/FXC/FVC
Qty 1 1 1 1 1 1 1 1
Supply Air
Duct Collar
Coil Supply
and Return
Drain
Connection
Table 1: Nominal Unit Weight
200 300 400 500 600 800 1000 1200
Shipping Weight (lb)
0.8 1.0 1.1 1.6 2.0 2.1 3.6 4.2
1 1 1 1 1 1 2 2
1 1 2 2 2 2 4 4
Filters (Nominal Size (in.) (1-in. thick)
7¾ x
7¾ x
7¾ x
7¾ x
7¾ x
7¾ x
7¾ x
21¾
21¾
31¾
31¾
41¾
43¾
57¾
1-inch
Piping Connections (Sweat) (in.)
5/8” OD, 7/8” OD
3/4 MPT
7¾ x
65¾
International Environmental Corporation • Vertical F*C Series Fan Coil Installation, Operation, & Maintenance Manual
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IEC Vertical F*C Series Fan Coils
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
7. Adjust FHC, FXC, FVC units leveling legs so unit is
level. See Figure 2. Unit must be level for proper
operation and condensate drainage. (See Figure 5 for
recommended connection methods/trapping)
8. Mounting unit: Reach into unit and attach unit
to the wall using the 0.375-in. mounting holes (4)
Level Unit
12”
30” Minimum
per building code
±1/4”
1/2”
Minimum
in top panel; do not use any other locations. The
four mounting holes and hanger slots with rubber
grommets are NOT for balancing unit.
NOTE: For any unit without a return-air duct connection,
applicable installation codes may limit unit to installation
in single story applications only.
1/2”
Minimum
Side View Front View
Figure 2: Clearance recommendations.
valve packages may be shipped loose with the equipment.
Cooling/Heating Pipe Connections
CAUTION: Residues and loose particles
resulting from manufacturing and eld piping
In these cases, perform a dry t of the assemblies to ensure
proper alignment and access to the assembly components
can be utilized for maintenance and service.
techniques such as joint compounds, soldering ux, and
metal shavings may be present in the unit and the piping
system. Give special consideration to system cleanliness
when connecting to solar, domestic or potable water
systems.
If coil and valve package connections are made with a
“sweat” or solder joint, verify that no components in the
valve package are subjected to a high temperature which
may damage seals or other materials. Do not allow valve
bodies to exceed 300°F. Protect all valve and water control
Thoroughly review submittals and product literature
detailing unit operation, controls, and connections BEFORE
assemblies with wet or damp rag wrapped around the body
during the soldering/brazing process.
beginning the connection of the various cooling and/or
heating mediums to the unit.
Many two position electric control valves, depending on
valve operation, are provided with a manual opening lever.
All accessory valve packages shall be installed as required,
and check all service valves for proper operation. At times,
Place this lever in the “open” position during all soldering or
brazing operations.
International Environmental Corporation • Vertical F*C Series Fan Coil Installation, Operation, & Maintenance Manual
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IEC Vertical F*C Series Fan Coils
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
Mating
Hole
Step 1: Rotate
actuator counter
clockwise
approximately
30 degrees.
Manual Operating
Lever
General Close-O (G)
Taco Line Voltage
Locking Post
Schneider Erie
Release Button
Stem
B
A
Release
Button
High Close-O (H)
Step 2: Move actuator
upward 3/4” to disengage.
Manual
Operating Lever
Mating
Hole
The supply and return connections are marked on the coil
stub outs and the valve package, with an “S” meaning supply
or inlet and “R” meaning return or outlet indicating uid ow
direction to and into the coil. Blue letters mark the chilled
water connections and Red letters mark the hot water or
steam connections.
In the case of eld-installed valves and piping, install the
chilled water valve cluster (or expansion valve on DX units)
in such a way that any dripping or sweating caused from
condensation is contained in the drain pan or other device
such as an optional extended drain pan or factory drip lip.
Factory drip lips are eld installed and may be packaged
separately from the unit. Factory supplied cooling coil valve
packages will be arranged to locate as much of the package
as possible over a standard drip lip. Some eld congurations
may require additional insulation be applied to the exposed
water piping to prevent condensation from dripping into
areas not directly above the auxiliary drain pans.
If none of the above factory accessories are provided with
the units, simple ashing may be used to carry moisture into
the unit drain pan.
Field Piping Connections
Taco Zone Sentry
Step 1: Push in and hold
release clip at the front
of the actuator.
Figure 3: Valve and Lever–Pop-Top Installation
If the valve package connection at the coil is a union, the coil
side of the union must be prevented from twisting (“backed
up”) during tightening to prevent damage to the coil tubing.
Do not over tighten the union preventing distorting (“egg
shaping”) of the union seal surface and destroying the
union.
International Environmental Corporation • Vertical F*C Series Fan Coil Installation, Operation, & Maintenance Manual
Step 2: Move actuator
away from the valve body
approximately 3/4” to
disengage locking posts
and stem.
Locking Post
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To chilled water coil: IEC’s innovative design incorporates
3/8” copper tubing inside and stubbing out of the coil. To
facilitate ease of connecting to eld supplied ½” hydronic
tubing, there is a 3/8” to 1/2” swedge adaptor installed on
both the supply and return water tube connections to the
coil. Care must be taken when soldering the eld supplied
tubing to this connection.
The use of solder with a ow or initial melting point below
500°F is recommended to make these connections. Local
codes and/or building specications should always be
consulted to ensure solder being used is compliant with
current building standards. When making soldering
connections, use a wet rag as a heat sink around the factory
adaptor to prevent overheating of this joint. See Figure 4.
After soldering, use the wet rag to quench the eld and
factory connections at this tting.
9
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