Cornelius VFCB Installation Manual
Document 464696
Model VFCD and VFCB
®
Vertical Fan Coil
Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. Read carefully before attempting to assemble, install,
operate or maintain the product described. Protect yourself and others by observing all safety information. Failure
to comply with instructions could result in personal injury and/or property damage!
Model VFCD Model VFCB
General Safety Information
Only qualified personnel should install this unit.
Personnel should have a clear understanding of these
instructions and should be aware of general safety
precautions. Improper installation can result in electric
shock, possible injury due to coming in contact with
moving parts, as well as other potential hazards.
Other considerations may be required if high winds
or seismic activity are present. If more information
is needed, contact a licensed professional engineer
before moving forward.
1. Follow all local electrical and safety codes, as
well as the National Electrical Code (NEC), the
National Fire Protection Agency (NFPA), where
applicable. Follow the Canadian Electric Code
(CEC) in Canada.
2. The rotation of the wheel is critical. It must be
free to rotate without striking or rubbing any
stationary objects.
3. Motor must be securely and adequately
grounded.
4. Do not spin fan wheel faster than the maximum
cataloged fan rpm. Adjustments to fan speed
significantly affects motor load. If the fan RPM is
changed, the motor current should be checked
to make sure it is not exceeding the motor
nameplate amps.
5. Do not allow the power cable to kink or come
in contact with oil, grease, hot surfaces,
or chemicals. Replace cord immediately if
damaged.
6. Verify that the power source is compatible with
the equipment.
7. Never open blower access doors while the fan is
running.
Always disconnect power before working on or
near a unit. Lock and tag the disconnect switch or
breaker to prevent accidental power up.
When servicing the unit, motor may be hot enough
to cause pain or injury. Allow motor to cool before
servicing.
DANGER
CAUTION
®
Vertical Fan Coil 1
Receiving
Upon receiving the product, check to make sure all
items are accounted for by referencing the delivery
receipt or packing list. Inspect each crate or carton
for shipping damage before accepting delivery. Alert
the carrier of any damage detected. The customer will
make a notation of damage (or shortage of items) on
the delivery receipt and all copies of the bill of lading
which is countersigned by the delivering carrier. If
damaged, immediately contact your manufacturer’s
representative. Any physical damage to the unit after
acceptance is not the responsibility of manufacturer.
Unpacking
Verify that all required parts and the correct quantity
of each item have been received. If any items are
missing, report shortages to your local representative
to arrange for obtaining missing parts. Sometimes it
is not possible that all items for the unit be shipped
together due to availability of transportation and truck
space. Confirmation of shipment(s) must be limited to
only items on the bill of lading.
Handling
Units are to be rigged and moved by the lifting
brackets provided or by the skid when a forklift is
used. Location of brackets varies by model and size.
Handle in such a manner as to keep from scratching
or chipping the coating. Damaged finish may reduce
ability of unit to resist corrosion.
Storage
Units are protected against damage during shipment.
If the unit cannot be installed and operated
immediately, precautions need to be taken to prevent
deterioration of the unit during storage. The user
assumes responsibility of the unit and accessories
while in storage. The manufacturer will not be
responsible for damage during storage. These
suggestions are provided solely as a convenience to
the user.
INDOOR — The ideal environment for the storage of
units and accessories is indoors, above grade, in a
low humidity atmosphere which is sealed to prevent
the entry of blowing dust, rain, or snow. Temperatures
should be evenly maintained between 30°F (-1°C) and
110°F (43°C) (wide temperature swings may cause
condensation and “sweating” of metal parts). All
accessories must be stored indoors in a clean, dry
atmosphere.
Remove any accumulations of dirt, water, ice, or snow
and wipe dry before moving to indoor storage. To
avoid “sweating” of metal parts allow cold parts to
reach room temperature. To dry parts and packages
use a portable electric heater to get rid of any
moisture build up. Leave coverings loose to permit air
circulation and to allow for periodic inspection.
The unit should be stored at least 3½ in. (89 mm) off
the floor on wooden blocks covered with moisture
proof paper or polyethylene sheathing. Aisles between
parts and along all walls should be provided to permit
air circulation and space for inspection.
Inspection and Maintenance during Storage
While in storage, inspect fans once per month. Keep a
record of inspection and maintenance performed.
If moisture or dirt accumulations are found on parts,
the source should be located and eliminated. At each
inspection, rotate the fan wheel by hand ten to fifteen
revolutions to distribute lubricant on motor. Every
three months, the fan motor should be energized. If
paint deterioration begins, consideration should be
given to touch-up or repainting. Fans with special
coatings may require special techniques for touch-up
or repair.
Machined parts coated with rust preventive should
be restored to good condition promptly if signs of
rust occur. Immediately remove the original rust
preventive coating with petroleum solvent and clean
with lint-free cloths. Polish any remaining rust from
surface with crocus cloth or fine emery paper and oil.
Do not destroy the continuity of the surfaces. Wipe
thoroughly clean with Tectyl
®
506 (Ashland Inc.) or
the equivalent. For hard to reach internal surfaces or
for occasional use, consider using Tectyl
®
511M Rust
Preventive or WD-40® or the equivalent.
REMOVING FROM STORAGE — As units are removed
from storage to be installed in their final location,
they should be protected and maintained in a similar
fashion, until the equipment goes into operation.
Prior to installing the unit and system components,
inspect the unit assembly to make sure it is in working
order.
1. Check all fasteners, set screws on the fan,
wheel, bearings, drive, motor base, and
accessories for tightness.
2. Rotate the fan wheel(s) by hand and assure no
parts are rubbing.
Service Clearance
Units require service clearance for:
• Filter replacement
• Coil and drain pan inspection - cleaning, and
replacement
• Motor and drive inspection - maintenance and
replacement
Access panels are provided for inspection and
cleaning of unit components. Allow service clearance
of 26 inches for removal of filters. Allow a service
clearance equal to the unit width for removal of coils
and drain pan.
Vertical Fan Coil2
®
Table of Contents
Installation
Unit Layout ...............................3
Mounting Instructions ...................... 3
Unit Dimensions / Weights .................. 4
Inlet and Outlet Duct Details ................ 4
Coil Details .............................5-6
Filter Details ............................. 7
Operation
System Start-Up .......................... 7
Speed Controls ........................... 8
Troubleshooting
Blower .................................. 9
Motor Overamps .......................... 9
Insufficient / Too Much Airflow ............... 9
Excessive Noise or Vibration ................ 9
Start-Up
Hot Water, Chilled Water and DX Coils .....10-11
Drain Pan / Drain Trap .................... 11
Maintenance
Fan .................................... 12
Coil .................................... 13
Drain Pan ............................... 13
Reference
Start-Up Documentation ................... 13
Optional Ladder Diagrams ...............14-15
Maintenance Log ..................Backcover
Our Commitment ...................Backcover
Unit Layout
Airflow
1
6
3
2
1. Fan Section
2. Coil Section
• Chilled Water • Hot Water
• DX Coils • Steam Coils
3. Vertical Inlet Filter with 1/4 turn fasteners
4. Hinged Access Door for blower section
(unit shown with door removed)
5. Coil Access Panels provides right and left access
to coil section.
6. 1-1/4 inch knockout is provided for the
recommended electrical wiring penetration or
disconnect switch.
4
5
Mounting Instructions
The VFC should be mounted on a field supplied
base as shown in Figure 1. An optional manufacturer
supplied 6inch extended base may be used when
mounting as shown in Figure 2.
Figure 2Figure 1
®
Vertical Fan Coil 3
Unit Dimensions
A
Model VFCBModel VFCD
Outlet Airflow
Inlet
irflow
Filter
Projection
2 or 4 inch
W
B
H
H
W
C
Unit Size A B C
Horizontal
Opposed
Airflow
A
Inlet
Option
Inlet
Airflow
VCFD Direct Drive VCFB Belt Drive
W
Filter
Projection
2 or 4 inch
W
B
H
H
Vertical Airflow
H
W
Outlet
Option
C
Width Height Width Height Width Height
1
600 40 24 24 18 22 5
800 40 24 24 18 22 7 5
⁄2 51⁄2 63⁄4 4
1
⁄2 63⁄4 61⁄2
1300 44 24 28 18 22 18 55⁄8 81⁄2 8
5
1600 44 30 28 22 22 18 5
2000 52 34 28 29 23 26 5
2400 52 34 28 29 23 26 5
7
3000 52 50 32 45 22 32
⁄8 103⁄8 123⁄4 12
⁄8 99
5
⁄8 10 9
5
⁄8 101⁄4 10
All dimensions are in inches.
A
Weights
VFCD
Unit Size
Fan with Drain Pan
Fan Motor Total Fan Motor Total Row 1 Row 2 Row 4 Row 6 Row 8 2 inch 4 inch
600 235 15 250 235 60 295 38 51 77 106 135 8 13
800 240 15 255 240 60 300 38 51 77 106 135 8 13
1300 260 15 275 260 60 320 38 51 77 106 135 8 13
1600 300 25 325 300 60 360 51 70 110 152 195 11 17
2000 350 25 375 350 75 425 58 80 127 175 225 12 19
2400 360 35 395 360 75 435 58 80 127 175 225 12 19
3000 425 50 475 425 75 500 64 90 143 198 255 14 22
All weights shown are in lbs. (pounds). Motor weights may vary depending on enclosure type and horsepower.
Vertical Fan Coil4
VFCB
Fan with Drain Pan
Coil Section Vertical Filter
®
Coil Dimensions
Hot Water • 1 and 2 Row
D
Outlet
Airflow
3.75 in.
3.81 in.
C
Inlet
A
B
Right side connection shown.
Hot Water • 4 Row
D
Outlet
Cap
Airflow
C
Cap
Inlet
3.75 in.
3.38 in.
6.63 in.
A
B
Right side connection shown.
2 in.
2 in.
1.5 in.
1.5 in.
4 in.
Outlet
Inlet
0.75 in.
1 in.
Drain
Connection
3 in.
Outlet
Inlet
0.75 in.
1 in.
Drain
Connection
Unit Size A B C D
600 20.00 22.50 22.63 0.875
800 20.00 22.50 22.63 0.875
1300 24.00 27.50 22.63 0.875
1600 24.75 27.25 22.63 0.875
2000 24.75 27.50 25.13 0.875
2400 24.75 27.50 25.13 0.875
3000 28.75 31.25 22.63 1.375
All dimensions are in inches.
NOTE
Fluid enters the coil from the bottom connection
(Inlet) and exits from the top (Outlet).
Unit Size A B C D
600 20.00 22.50 22.63 0.875
800 20.00 22.50 22.63 0.875
1300 24.00 27.50 22.63 0.875
1600 24.75 27.25 22.63 0.875
2000 24.75 27.50 25.13 0.875
2400 24.75 27.50 25.13 0.875
3000 28.75 31.25 22.63 1.375
All dimensions are in inches.
NOTE
With airflow from left to right, the fluid enters the coil
from the bottom connection (Inlet) and exits from the
top (Outlet). The other two coil connections should
be capped off (Cap).
Steam • 1 and 2 Row
D
Airflow
Inlet
C
4.38 in.
®
Outlet
5 in.
B
Right side connection shown.
Unit Size A B C D
600 20.00 22.50 13.20 2.0
3 in.
800 20.00 22.50 13.20 2.0
1300 24.00 27.50 13.20 2.0
1600 24.75 27.25 13.20 2.0
2000 24.75 27.50 14.44 2.0
2400 24.75 27.50 14.44 2.0
Inlet
2 in.
A
1.5 in.
Outlet
0.75 in.
1 in.
Drain
Connection
3000 28.75 31.25 13.20 2.5
All dimensions are in inches.
NOTE
Steam enters the coil from the center connection
(Inlet) and exits from the bottom (Outlet).
Vertical Fan Coil 5
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