Greenheck MSCF User manual

GREENHECK
P. O. BOX 410 SCHOFIELD, WISCONSIN 54476-0410
PH. 715-359-6171
www.greenheck.com
Part #462888
Report any damaged equipment to the shipper immediately!
All units are shipped on a skid or packaged to minimize damage during shipment. The transporting carrier has
the responsibility for delivering all items in their original condition as received from Greenheck. The individual
receiving the equipment is responsible for inspecting the unit for obvious or hidden damage, recording any
damage on the bill of lading before acceptance and filing a claim (if required) with the final carrier. Some
accessory items are stored inside the unit during shipping. Care must be taken during installation to prevent
damage to units.
MODEL MSCF
Modular Small Cabinet Fan
Installation, Operation and Maintenance Manual
**WARNING**
Disconnect and secure all electrical power to the “OFF” position prior to inspection or servicing. Failure to
comply with this safety precaution could result in serious injury or death.
Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or
death. Read the installation, operating, and maintenance instructions thoroughly before installing or
servicing this equipment.
**IMPORTANT**
All factory provided lifting lugs should be used when lifting any unit. Failure to comply with this safety
precaution could result in property damage, serious injury or death.

6
3
2
4
5
1
1. Fan Section
2. Cooling Section
Chilled Water or DX Coils
3. Heating Section
Hot Water or Steam Coils
4. Filter Section
Filter may be mounted in mixing box
section
5. Plenum Section
6. Mixing Box Section
7. Lifting Lugs
4 lifting lugs for each section
8. Side Access Panels
Right and left access to each section
(image shows panels removed)
9. 1-1/4 in. knockout for recommended
electrical wiring penetration or
disconnect switch.
8
8
8
8
8
7
9
Table of Contents
Unit Layout & Table of Parts .....................................................................................................
Lifting & Hanging Instructions ...................................................................................................
Modular Construction & Mounting Dimensions .....................................................................
Model Dimension, Weight & Filter Information ........................................................................
Hot Water, Chilled Water & DX Coil Information ......................................................................
Airflow Start-up .........................................................................................................................
Airflow Troubleshooting .........................................................................................................
Coil Start-up Instructions .........................................................................................................
Fan Maintenance Instructions .................................................................................................
Coil Maintenance Instructions ..................................................................................................
Maintenance Documentation & Warranty ................................................................................
Page
2
3
4
5
6
7
8
9
10
11
12
88
2
Airflow

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Lifting Instructions
Greenheck's Modular Small Cabinet Fan (MSCF) should be lifted by the factory supplied lifting
lugs or frame rails and a spreader bar to prevent damage from occurring to the equipment (see
figure 1). Avoid twisting or uneven lifting of equipment. Do not lift equipment by coil connections
or headers. The unit must remain upright during lifting. All access doors and panels must be
closed during lifting to avoid damage (see figure 1).
Figure 1
3
Frame Rails
(By others)
Spreader bar
Lifting lugs
The MSCF should be hung by the factory supplied lifting lugs or field supplied frame rails as
shown respectively in figures 2 and 3. The number of hanging brackets used will be determined
by the number of fan modules.
Figure 3
Figure 2
Hanging Instructions
External Mounting Isolation
The MSCF is available with
both external neoprene and
spring isolation options. When
external isolation is selected a
bridge bracket will be
provided to reduce installation
time (see figure 4).
3/
4" FLAT WA
S
HE
R
1 PER A
SS
EMBLY A
S
NEEDE
D
3/8
-1
6
S
PINL
OC
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2 RE
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'D PER ASSEMBL
Y
3/8
-1
6
x
3/
4
S
PINL
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2 RE
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Y
HANGING BRACKE
T
PART N
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77
4
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ASSEMBLY
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LOCK BOLT
SSEMBLY
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Figure 4

4
Mounting Dimensions
Horizontal Hanging
Model MSCF ABC DEFGH JKLM
w/o Filter w/ Filter Vertical Sloped
15 6.75 18.5 18.5 6.75 6.75 18.5 6 6.75 19 38 2.5 3 .5 43
20 6.75 18.5 18.5 6.75 6.75 18.5 6 6.75 19 38 2.5 3 .5 43
25 6.75 21 18.5 6.75 6.75 21 6 6.75 23 38 2.5 3 .5 43
30 6.75 25 18.5 6.75 6.75 25 6 6.75 26 38 2.5 3 .5 43
45 6.75 26 18.5 6.75 6.75 26 6 6.75 26 50 2.5 3 .5 55
50 6.75 26 18.5 6.75 6.75 26 6 6.75 32 50 2.5 3 .5 55
65 6.75 32 18.5 6.75 6.75 28 6 6.75 36 50 2.5 3 .5 55
85 6.75 32 18.5 6.75 6.75 28 6 6.75 36 62 2.5 3 .5 67
ABC D E FG
H
J
K
L
M
Mixing Box 24 in. Plenum 12 in. Plenum Filter Heating Cooling Fan
The MSCF is designed to be modular so
it can be mounted as an assembly or as
individual sections when the appropriate
lifting equipment is not available (See
Figure 5).
Modular Construction
Figure 5

Unit A B C D Inlet Outlet
Size w/o Filter w/ Filter 12 in. 24 in. Vertical Sloped Hot Water Steam EFGWidth Height Width Height Width
15 11 24.5 12.75 24.5 12.75 24.5 12.75 15.5 24.5 25 11 38 9 36 4 6.75
20 14 24.5 12.75 24.5 12.75 24.5 12.75 15.5 24.5 25 14 38 12 36 6.5 6.75
25 16 27 12.75 24.5 12.75 27 12.75 15.5 24.5 29 16 38 14 36 8 8.5
30 18.5 31 12.75 24.5 12.75 31 12.75 15.5 24.5 32 18.5 38 16.5 36 9 9
45 18.5 32 12.75 24.5 12.75 32 12.75 15.5 24.5 32 18.5 50 16.5 48 9 10
50 21 32 12.75 24.5 12.75 32 12.75 15.5 24.5 38 21 50 19 48 10.25 10
65 26 38 12.75 24.5 12.75 38 12.75 15.5 24.5 42 26 50 24 48 12 12.75
85 26 38 12.75 24.5 12.75 38 12.75 15.5 24.5 42 26 62 24 60 12 15
MSCF Dimensional Data
Mixing Box Plenum Filter Heating Cooling Fan
ABCDE F
G
Unit A B C *D *E F
Size w/o Filter w/ Filter 12 in. 24 in. Vertical Sloped Hot Water CW/DX Fan Motor *Total
15 80 107 31 57 34 61 61 145 94 50 144
20 95 126 36 68 41 72 72 171 111 50 161
25 105 140 40 75 45 80 80 190 130 60 190
30 118 157 45 84 50 90 88 209 150 75 225
45 132 176 50 94 55 100 99 234 194 75 269
50 151 202 58 108 64 115 113 269 253 100 353
65 197 263 75 141 77 150 136 323 328 125 453
85 226 302 85 170 90 175 140 350 360 140 500
MSCF Weight Information
Size Vertical Qty Face Sloped Qty Face
12x12 1
15 9x18 2 1.8 12x24 1 2.5
12x12 1 16x16 1
20 12x24 1 2.5 16x20 1 3.4
25 14x18 2 3.0 16x20 2 3.8
16x16 1 12x24 1
30 16x20 1 3.4 24x24 1 5.3
45 16x24 2 4.8 24x24 2 7.2
50 18x24 2 5.4 24x24 2 7.2
65 24x24 2 7.2 24x24 4 14.4
12x24 1 12x24 2
85 24x24 2 8.9 24x24 4 17.8
MSCF Filter Information
5
* All weights are approximated. Motor weights may very depending on enclosure type and horsepower. Weight information for hot
water, chilled water and DX coils is wet weight.

Size Face A B C D E F
15 1.6 38 12.75 11.0 3.0 0.75 .5
20 2.2 38 12.75 14.0 4.5 0.75 .5
25 2.7 38 12.75 16.0 4.0 0.88 .5
30 3.2 38 12.75 18.5 4.0 0.88 .5
45 4.5 50 12.75 18.5 4.0 0.88 .5
50 5.2 50 12.75 21.0 4.0 1.13 .5
65 6.7 50 12.75 26.0 4.0 1.38 .5
85 8.6 62 12.75 26.0 4.0 1.38 .5
6
MSCF
Hot Water
Dimensional Data
MSCF Coil Data
Chilled Water Dimensional Data
6.5
J
2
1.5 3.75
A
K
B
C
13.25
18.5
1
3
.75
3.88
4, 6 or 8 Row Size Face A B C JK
4684&6 8
15 1.6 38 24.5 11.0 10 12 14 0.75 1.38
20 2.2 38 24.5 14.0 10 12 14 0.75 1.38
25 2.7 38 24.5 16.0 10 12 14 0.88 1.38
30 3.2 38 24.5 18.5 10 12 14 0.88 1.38
45 4.5 50 24.5 18.5 10 12 14 0.88 1.38
50 5.2 50 24.5 21.0 10 12 14 1.38 1.63
65 6.7 50 24.5 26.0 10 12 14 1.38 1.63
85 8.6 62 24.5 26.0 10 12 14 1.38 1.63
All dimensions are in inches.
Direct Expansion (DX)
13.25
18.5
1
A
6.5
L
NP
3.75
3.88
M
B
C
4, 6 or 8 Row
Dimensional Data
3
2
1.5
All dimensions are in inches.
1 & 2 Row Coils
NOTE: 4 row hot water dimensions are the same as 4 row chilled water coil data(see
below). Fluid enters the coil from the bottom connection (In) and exits from the top (Out).
In
Out
Out
In
NOTE: With airflow from left to right the fluid enters the coil from
the bottom connection (In) and exits from the top (Out). The other
two coil connections should be capped off (Cap).
Cap
Cap
Airflow
NOTE: With airflow from left to right the fluid enters the coil from
the center connection (In) and exits from the bottom (Out). The
other connections should be capped off (Cap).
Out
In
Cap
B
6
D
F
3
E
A
C
All dimensions are in inches.
Unit Face ABC LMNP
Size Area 4 6 8 All All 4 & 6 8
15 1.6 38 24.5 11.0 8.75 10.75 12.75 5.25 0.63 0.63 1.38
20 2.2 38 24.5 14.0 8.75 10.75 12.75 7.00 0.63 0.63 1.38
25 2.7 38 24.5 16.0 8.75 10.75 12.75 8.00 0.88 1.38 1.38
30 3.2 38 24.5 18.5 8.75 10.75 12.75 9.00 0.88 1.38 1.38
45 4.5 50 24.5 18.5 8.75 10.75 12.75 9.00 0.88 1.38 1.38
50 5.2 50 24.5 21.0 8.75 10.75 12.75 10.25 0.88 1.38 1.63
65 6.7 50 24.5 26.0 8.75 10.75 12.75 13.00 1.13 1.38 1.63
85 8.6 62 24.5 26.0 8.75 10.75 12.75 13.00 1.13 1.38 1.63
1, 2, or 4 Row
Orifice Code 18/19
Airflow
Coil connection made
inside housing, 2 inch
hole is provided.

7
Airflow System Start-Up
For proper unit function and safety, follow everything in this start-up procedure in the order presented. This is to
be done after the electrical connections are complete.
1. Check Voltage
Before starting the unit compare the supplied
voltage with the units nameplate voltage and the
motor voltage.
2. Check Blower Rotation
If the blower is rotating in the wrong direction, the
unit will move some air but not perform properly. To
check the rotation, open the blower access door
and run the blower momentarily to determine the
rotation.
To reverse the rotation, turn the power off and use
the following procedure:
•For single phase units, rewire the motor per the
instructions on the motor.
•For three phase units, interchange any two
power leads. This can be done at the motor
starter.
3. Check for Vibration
Check for unusual noise, vibration or overheating
of bearings. Excessive vibration maybe
experienced during initial start-up. Left
unchecked, excessive vibration can cause a
multitude of problems, including structural and/or
component failure. Many conditions can be
discovered by careful observation. If the problem
is wheel unbalance, in-place balancing can be
done providing there is access to the fan wheel.
Generally, fan vibration and noise is transmitted to
other parts of the building by the ductwork. To
eliminate this undesirable effect, Greenheck has
used a heavy canvas connection between the
scroll and the discharge of the fan. If noise is an
issue, we recommend using heavy canvas
connections on the inlet of the fan. Refer to the
“Troubleshooting” section of this manual if a
problem develops.
4. Air Volume Check and Measurement
Along with the building balance, the units air
volume (cfm) should be measured and compared
with its rated air volume. This unit is flexible for
varying air volume, but the actual air volume
should be known for making final adjustments. The
most accurate way to measure the air volume is by
using the pitot traverse method in the ductwork
away from the blower. Other methods can be used
but should be proven and accurate. To adjust the
air volume, change the fan rpm or the system
losses. See Troubleshooting section in this guide.
5. Measure Motor Voltage, Amperage and
Fan rpm
All access doors must be installed. Measure and
record the input voltage and motor amperage(s).
To measure the fan rpm, the blower door will need
to be removed. Minimize measurement time
because the motor may over amp with the door
removed.
Compare measured amps to the motor nameplate
full load amps and correct if over amping. See the
Troubleshooting section in this guide.
Pre-Start Check List
1. Disconnect and lock-out all power switches to
fan.
2. Check all fasteners, set screws and locking
collars on the fan, bearings, drive, motor base
and accessories for tightness.
3. Rotate the fan wheel by hand and assure no
parts are rubbing.
4. Check the V-belt drive for proper alignment and
tension.
Special Tools Required
• Voltage meter
• Tachometer
• Amperage meter
AIRFLOW
R
O
T
A
T
O
I
N

AIRFLOW TROUBLESHOOTING
Blower Unit
Symptom Possible Cause Solution
Blower fails Blown fuse or open circuit breaker Replace fuse or reset circuit breaker and
to operate check amps
Broken fan belt Replace
Defective motor or capacitor Replace
Motor starter overloaded Reset starter and check amps
Motor overamps CFMs too high Check CFMs and adjust drives if needed
Static pressures are higher or lower If higher, ductwork should be improved
than design If lower, fan RPMs should be lower
Blower rotation is incorrect Check rotation and correct
Motor voltage incorrect Check motor nameplate and supplied voltage
Motor horsepower too low See specifications and catalog for fan
curves to determine if horsepower is sufficient
Shorted windings in motor Replace motor
Insufficient airflow Mixing box damper not fully open Adjust damper linkage or replace
damper motor
System static pressure too high Improve ductwork to eliminate losses
using good duct practices
Blower speed too low Check for correct drives and RPMs
with catalog data
Mixing box dampers closed Open and adjust
Dirty or clogged filters Clean or replace
Leaks in ductwork Repair
Elbows, or other obstructions Correct or improve ductwork
may restrict fan outlet
Belt slippage Adjust belt tension
Too much airflow Blower fan speed too high Check for correct fan RPM
Filter(s) not in place Install filters
Insufficient static pressure (SP) Induce SP into system ductwork
(airflow resistance)
Excessive noise Wheel rubbing on housing Center wheel
or vibration Loose wheel on shaft Tighten wheel setscrew
Loose motor or blower sheave Tighten sheave setscrew
Belts too loose Adjust belt tension after 24 hours
of operation
Belts too tight Loosen to maintain 3/8 in. deflection
per ft. of span between sheaves
Worn belt Replace
Motor base or blower loose Tighten mountings bolts
Worn bearings Replace
Bearing and drive alignment Realign
Motor out of balance Replace
Wheel out of balance Replace or rebalance
Sheaves eccentric or out-of-balance Replace or rebalance
Accumulation of material on wheel Clean wheel and housing

9
WATER COILS
1. Piping should be in accordance with accepted industry standards. Pipework should be supported
independently of the coils. Water pipes are copper with sweet connections. USE WET TOWEL TO AVOID
BURNING COIL CONNECTION GROMMETS. When installing coupling, do not apply undue stress to the
connection extending through the unit. Use a back-up pipe wrench to avoid breaking the weld between
coil connection and header.
2. Connect the WATER SUPPLY TO THE BOTTOM CONNECTION on the air-leaving side and the WATER
RETURN TO THE TOP CONNECTION on the air-entering side. The extra bottom connection can be used
for an auxiliary manual drain connection, and the extra top connection may be used for an automatic air
vent or the extra connections can be capped. To insure proper venting, an external air vent in the piping is
recommended. Connecting the supply and/or return in any other manner will result in very poor
performance. CAP UNUSED CONNECTIONS.
3. The air vent at the uppermost point should be temporarily opened during system start-up to release all
of the air from the coil. To maintain heat transfer capacity, periodically vent any air in coil. Vent is
to be located behind connections side access door.
4. Water coils are not normally recommended for use with entering air temperatures below 40oF. No control
system can be depended on to be 100% safe against freeze-up with water coils. Glycol solutions or
brines are the only safe media for operation of water coils with low entering air conditions.
CONTINUOUS WATER CIRCULATION THROUGH THE COIL AT ALL TIMES IS HIGHLY RECOMMENDED.
5. Pipe sizes for the system must be selected on the basis of the head (pressure) available from the
circulation pump. Piping should be in accordance with accepted industry standards.
6. For chilled water coils, the condensate drain pipe should be sized adequately to ensure the condensate
drains properly. See DRAIN PAN TRAPS and Figure 5.
DIRECT EXPANSION (DX) COILS
1. Piping should be in accordance with accepted industry standards. Pipework should be supported
independently of the coils. Undue stress should not be applied at the connection to coil headers.
2. The condensate drain pipe should be sized adequately to ensure the condensate drains properly. See
DRAIN PAN TRAPS and Figure 5.
3. When connecting suction and liquid connections make sure the coil is free from all foreign material. Make
sure all joints are tight and free of leakage.
4. Greenheck does not supply compressor or condensing units, for further instruction on DX coil installation
and operation contact your compressor and/or condenser manufacturer.
DRAIN PAN TRAPS
Drain lines and traps should be run full size from
the drain pan connection. Drain pans should have
drain lines and traps to permit the condensate from
the coils to drain freely. On all units with drain
pans, the trap depth and the distance between the
trap outlet and the drain pan outlet should be twice
the static pressure in the drain pan section under
normal operation to assure the trap remains
sealed.
Figure 5: Drain Pan Trap
6 in. min.
6 in. min.
Start-Up Instructions:
Optional Cooling Coils

10
MAINTENANCE
Greenheck recommends these procedures to insure trouble free operation of this unit. It is especially important to
maintain heater units for clean and efficient operation. Most unit failures can be attributed to poor setup or poor
maintenance.
A record of maintenance performed on this unit should be kept. This information will provide essential information
if problems are encountered. A section at the back of this manual is provided for recording the unit's maintenance
history.
CAUTION: When performing any maintenance on this unit be
sure that the power is disconnected and cannot be
accidentally turned on. The control center disconnect can be
locked in the off position.
2 weeks after startup
Check belt tension - Belts tend to stretch after a period of time.
They should be periodically checked for wear and tightness.
Approximately 3⁄8in. of deflection per ft. of span between
sheaves is standard for belt tightness. When replacing belts,
use the same type as supplied with the unit. Matched belts should
always be used on units with multigroove pulleys.
Replacement of belts - should be accomplished by loosening the motor to the point where the belts can be
removed by hand. Do not force belts on or off as this may cause breakage of cords leading to premature belt
failure. Belts should be adjusted as above.
Every 3 Months
The filter in the unit should be inspected at least every 3 months. Depending on the environment filters could
require changing or cleaning more or less often. The filters can be slid out of either side of the unit.
If washable filters are installed, they can be washed in warm soapy water. An adhesive spray can be applied to
increase filter efficiency.
If disposable filters are installed, check by holding up to a light source. If light cannot pass through the filter, it
should be replaced. Replacement filters should be of the same manufacturer and size. When reinstalling filters, be
sure to install with the airflow in the correct direction indicated on the filter.
Yearly
Most bearings are permanently lubricated and require no further lubrication under normal use. Normal use being
considered -20°F to 120°F and in a relatively clean environment. Some bearings are re-lubricatable and will need
to be regreased depending on fan use. Check you bearings for grease zert to find out what type of bearing you
have. If your fan is not being operated under normal use, bearings should be checked monthly for lubrication.
Motor maintenance is generally limited to cleaning and lubrication (where applicable). Cleaning should be limited
to the exterior surfaces only. Removing dust and grease build-up on motor housing assures proper motor cooling.
Greasing of motors is intended only when grease fittings are provided. Many fractional motors are permanently
lubricated and require no further lubrication. Motors supplied with grease fittings should be greased in
accordance with manufacturer's recommendations. When motor temperature does not exceed 104°F (40°C), the
grease should be replaced after 2000 hours of running time as a general rule.
Wheels require very little attention when moving clean air. Occasionally oil and dust may accumulate on the wheel
causing imbalance. When this occurs the wheel and housing should be cleaned to assure smooth and safe
operation. Inspect fan impeller and housing for fatigue, corrosion or wear
Routinely check all fasteners, set screws and locking collars on the fan, bearing, drive, motor base and
accessories for tightness.
Belt Span
Deflection = Belt Span
64
NOTE: For motors of 1 hp or less a smaller sliding base
bracket is used to attach to blower.
10

COIL MAINTENANCE
1. Coils must be clean to obtain maximum performance. Check once a year under normal operating
conditions and, if dirty, brush or vacuum clean. Soiled fins reduce the capacity of the coil, demand more
energy from the fan, and create an environment for odor and bacteria to grow and spread through the
conditioned zone. High pressure water (400 psi or less) may be used to clean coils with fin thickness over
0.006 inches thick. TEST THE SPRAY PRESSURE over a small corner of the coil to determine if the fins
will withstand the spray pressure.
For coils with fragile fins or high fin density, foaming chemical sprays and washes are available. Many coil
cleaners contain harsh chemicals, so they must be used with caution by qualified personnel only. Care
must be taken not to damage the coils, including fins, while cleaning.
CAUTION: Fin edges are sharp.
2. Drain pans in any air conditioning unit will have some moisture in them, therefore, algae and other
organisms will grow due to airborne spores and bacteria. Periodic cleaning is necessary to prevent this
build-up from plugging the drain and causing the drain pan to overflow. Inspect twice a year to avoid the
possibility of overflow. Also, drain pans should be kept clean to prevent the spread of disease. Cleaning
should be performed by qualified personnel.
WINTERIZING COILS
Coil freeze-up can be caused by such things as air stratification and failure of outdoor air dampers and/or
preheat coils. Routine draining of water cooling coils for winter shutdown cannot be depended upon as
insurance against freeze-up. Severe coil damage may result. It is recommended that all coils be drained as
thoroughly as possible and then treated in the following manner.
Fill each coil independently with an antifreeze solution using a small circulating pump and again thoroughly
drain. Check freezing point of antifreeze before proceeding to next coil. Due to a small amount of water always
remaining in each coil, there will be diluting effect. The small amount of antifreeze solution remaining in the coil
must always be concentrated enough to prevent freeze-up.
NOTE: Carefully read instructions for mixing antifreeze solution used. Some products will have a higher freezing
point in their natural state than when mixed with water.
Maintenance Instructions:
Optional Cooling Coils
11

Job Information
Job Name:________________________________________
Address: _________________________________________
City: ________________ State: ________ Zip: __________
Phone: __________________ Fax: ____________________
Contact Person: ___________________________________
Service Organization: _____________________________
Address: ________________________________________
City: ________________ State: ________ Zip: _________
Phone: __________________ Fax: ___________________
Work Done By: ___________________________________
Name Plate Information
Model: ___________________________________________
Volts: ___________ Hertz: __________ Phase:__________
Amps: __________________ Mark: ___________________
Serial Number: ____________________________________
Motor Voltage:
Motor Amperage:
Fan rpm:
Maintenance Documentation
Maintenance
Date Time Notes:
Field Start-Up Documentation
Actual Voltage: Hertz: Phase:
Actual Amperage:
Blower Rotation ❏Correct
Air Volume Design cfm
Actual cfm
Drive
Level of fan (L or H)
Fan RPM Range (min.) (max.)
#462888 MSCF IOM
APRIL 2003
Warranty
Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the
purchase date. Any units or parts which prove defective during the warranty period will be replaced at our option when
returned to our factory, transportation prepaid.
Motors are warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck prove
defective during this period, they should be returned to the nearest authorized motor service station. Greenheck will not
be responsible for any removal or installation costs.
Due to continuing research, Greenheck reserves the right to change specifications without notice.
Copyright © 2003 Greenheck Fan Corp.
This manual is the property of the owner, and is required for future maintenance.
Please leave it with the owner when you complete the job.
12