Cissell MANHD30ST User manual

Technical specifications
Installation instructions
Operating instructions
Maintenance
OWNER'S MANUAL
30 lb. STACK LAUNDRY DRYER
Cissell Manufacturing Co.
831 S. First St. - P.O.Box 32270 - Louisville, Ky. - 40232-2270
Tel: [phone] - Fax: [phone] -
Sales Fax: [phone] - Service/Parts Fax: [phone]
THIS MANUAL MUST BE GIVEN TO THE EQUIPMENT OWNER
MANHD30ST 05/02
HD30ST
Gas: Natural and LP
Steam
Electric

Page 2
IMPORTANT NOTICESPLEASE READ
For optimum efficiency and safety, we recommend that you read the Manual before operating the equipment. Store
this manual in a file or binder and keep for future reference.
WARNING: Purchaser must post the following notice in a prominent location:
WARNING: For your safety the information in this manual must be followed to minimize
the risk of fire or explosion or to prevent property damage, personal injury or death.
- Do not store or use gasoline or other flammable vapors or liquids in the vicinity of this or
any other appliance.
- WHAT TO DO IF YOU SMELL GAS
 Do not try to light any appliance.
 Do not touch any electrical switch; do not use any phone in your building.
 Clear the room, building or area of all occupants.
 Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's
instructions.
 If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer, service agency or the gas
supplier.
WARNING: In the event the user smells gas odor, instructions on what to do must be posted in a
prominent location. This information can be obtained from the local gas supplier.
WARNING: Wear safety shoes to prevent injuries.
WARNING: Purchaser must post the following notice in a prominent location:
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors
and liquids in the vicinity of this or any other appliance.
WARNING: A clothes dryer produces combustible lint and should be exhausted outside the
building. The dryer and the area around the dryer should be kept free of lint.
WARNING: Be safe, before servicing machine, the main power should be shut off.

Page 3
ATTENTION: LACHETEUR DOIT PLACER LAVERTISSEMENT
SUIVANT DANS UN ENDROIT CLAIR ET VISIBLE:
ATTENTION: LACHETEUR DOIT PLACER LAVERTISSEMENT
SUIVANT DANS UN ENDROIT CLAIR ET VISIBLE:
AVERTISSEMENT. Assurez-vous de bien
suivre les instructions donnees dans cette
notice pour reduire au minimum le risque
dincendie ou dexplosion ou pour eviter tuot
dommage materiel, toute blessure ou la mort.
__ Ne pas entreposer ni utiliser dessence ni
dautres vapeurs ou liquides inflammables dans
le voisinage de cet appareil ou de tout autre
apparell.
__ QUE FAIRE SI VOUS SENTEZ UNE
ODEUR DE GAZ:
Ne pas tenter dallumer dapparell.
 Ne touchez a aucun interrupteur. Ne pas
vous servir des telephones se trouvant dans
le batiment ou vous vous trouvez.
 Evacuez la piece, le batiment ou la zone.
Appelez immediatement votre fournisseur de
gaz depuis un voisin. Suivez les instructions
du fournisseur.
Si vous ne pouvez rejoindre le fournisseur
de gaz, appelez le service des incendies.
__ linstallation et lentretien doivent etre assures
par un installateur ou un service dentretien
qualifie ou par le fournisseur de gaz.
POUR VOTRE SECURITE
Ne pas entreposer ni utiliser d essence
ni dautres vapeurs ou liquides
inflammables dans le voisinage de cet
appareil ou de tout autre appareil.

Page 4
WARNING: To avoid fire hazard, do not dry articles containing foam rubber or similar texture materials.
Do not put into this dryer flammable items such as baby bed mattresses, throw rugs, undergarments,
(brassieres, etc.) and other items which use rubber as padding or backing. Rubber easily oxidizes causing
excessive heat and possible fire. These items should be air dried.
WARNING: Synthetic solvent fumes from drycleaning machines create acids when drawn through the
dryer. These fumes cause rusting of painted parts, pitting of bright or plated parts, and completely
removes the zinc from galvanized parts, such as the tumbler basket. If drycleaning machines are in the
same area as the tumbler, the tumbler's make-up air must come from a source free of solvent fumes.
WARNING: Do not operate without guards in place.
WARNING: Check the lint trap often and clean as needed but at least a minimum of once per day.
WARNING: Alterations to equipment may not be carried out without consulting with the factory and
only by a qualified engineer or technician. Only Manufacturers parts may be used.
WARNING: Remove clothes from dryer as soon as it stops. This keeps wrinkles from setting in and
reduces the possibility of spontaneous combustion.
WARNING: Be safe - shut main electrical power and gas supply off externally before attempting
service.
WARNING: Never use drycleaning solvents, gasoline, kerosene, or other flammable liquids in the dryer.
FIRE AND EXPLOSION WILL OCCUR. NEVER PUT FABRICS TREATED WITH THESE
LIQUIDS INTO THE DRYER. NEVER USE THESE LIQUIDS NEAR THE DRYER..
WARNING: Do not place items exposed to cooking oils in your dryer. Items contaminated
with cooking oils may contribute to a chemical reaction that could cause a load to catch fire.
WARNING: Never let children play near or operate the dryer. Serious injury could occur if a child
should crawl inside and the dryer is turned on.
WARNING: Never tumble fiberglass materials in the dryer unless the labels say they are machine
dryable. Glass fibers break and can remain in the dryer. These fibers cause skin irritation if they
become mixed with other fabrics.
WARNING: Before operating gas ignition system - purge air from natural gas or propane gas lines
per manufacturers instructions.
WARNING: To reduce the risk of electric shock, disconnect this appliance from the power supply
before attempting any user maintenance other than cleaning the lint trap. Turning the controls to the
OFF position does not disconnect this appliance from the power supply.

Page 5
CISSELL DRYER WARRANTY
The Cissell Manufacturing Company (Cissell) warrants all new equipment (and the original parts thereof) to be free from
defects in material or workmanship for a period of three (3) years from the date of sale thereof to an original purchaser for
use, except as hereinafter provided. With respect to non-durable parts normally requiring replacement in less than three (3)
years due to normal wear and tear, and with respect to all new repair or replacement parts for Cissell equipment for which
the three (3) year warranty period has expired, or for all new repair or replacement parts for equipment other than Cissell
equipment, the warranty period is limited to ninety (90) days from date of sale. The warranty period on each new replacement
part furnished by Cissell in fulfillment of the warranty on new equipment or parts shall be for the unexpired portion of the
original warranty period on the part replaced.
With respect to electric motors, coin meters and other accessories furnished with the new equipment, but not manufactured
by Cissell, the warranty is limited to that provided by the respective manufacturer.
Cissell's total liability arising out of the manufacture and sale of new equipment and parts, whether under the warranty or
caused by Cissell's negligence or otherwise, shall be limited to Cissell repairing or replacing, at its option, any defective
equipment or part returned f.o.b. Cissell's factory, transportation prepaid, within the applicable warranty period and found
by Cissell to have been defective, and in no event shall Cissell be liable for damages of any kind, whether for any injury to
persons or property or for any special or consequential damages. The liability of Cissell does not include furnishing (or
paying for) any labor such as that required to service, remove or install; to diagnose troubles; to adjust, remove or replace
defective equipment or a part; nor does it include any responsibility for transportation expense which is involved therein.
The warranty of Cissell is contingent upon installation and use of its equipment under normal operating conditions. The
warranty is void on equipment or parts; that have been subjected to misuse, accident, or negligent damage; operated under
loads, pressures, speeds, electrical connections, plumbing, or conditions other than those specified by Cissell; operated
or repaired with other than genuine Cissell replacement parts; damaged by fire, flood, vandalism, or such other causes
beyond the control of Cissell; altered or repaired in any way that effects the reliability or detracts from its performance,
or; which have had the identification plate, or serial number, altered, defaced, or removed.
No defective equipment or part may be returned to Cissell for repair or replacement without prior written authorization
from Cissell. Charges for unauthorized repairs will not be accepted or paid by Cissell.
CISSELL MAKES NO OTHER EXPRESSED OR IMPLIED WARRANTY, STATUTORY OR OTHERWISE,
CONCERNING THE EQUIPMENT OR PARTS INCLUDING, WITHOUT LIMITATION, A WARRANTY OF
FITNESS FOR A PARTICULAR PURPOSE, OR A WARRANTY OF MERCHANTABILITY. THE
WARRANTIES GIVEN ABOVE ARE EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED
OR IMPLIED. CISSELL NEITHER ASSUMES, NOR AUTHORIZES ANY PERSON TO ASSUME FOR IT,
ANY OTHER WARRANTY OR LIABILITY IN CONNECTION WITH THE MANUFACTURE, USE OR SALE OF
ITS EQUIPMENT OR PARTS.
For warranty service, contact the distributor from whom the Cissell equipment or part was purchased. If the distributor
cannot be reached, contact Cissell.
IDENTIFICATION NAMEPLATE
The identification nameplate is located on the rear wall of the dryer. It contains the dryer serial number, product number, model
number, electrical specifications and other important data that may be needed when servicing and ordering parts, wiring diagrams,
etc. Do not remove this nameplate.

Page 6
TABLE OF CONTENTS
30 LB. STACK LAUNDRY DRYER
PAGE
Model Numbers & Company Address ......................................... 1
ImportantNotices ...................................................................... 2-4
Dryer Warranty ............................................................................ 5
Table of Contents ......................................................................... 6
Warnings,CautionaryNotesandSymbols ................................. 7-8
UnpackingandGeneralInstallation .............................................. 9
DryerOutlineDimensions(Illustration) ...................................... 10
Specifications ............................................................................. 11
GeneralInformationandMotorList ........................................... 12
GroundingInstructions ................................................................ 13
GasPipingandGasLoopPipingInstallation .......................... 14-16
Gas Pipe Size Chart.................................................................... 17
ExhaustInstallation-MultipleManifoldDuct ............................... 18
ExhaustInstallationwithSeparateExhaust ................................ 19
Dryer Make-Up Air Requirements ............................................. 20
ExhaustandVenting................................................................... 21
Rules for Safe Operation ............................................................ 22
OperatingInstructions-CoinMeter ........................................ 23-24
Service Savers............................................................................ 25
Troubleshooting .................................................................... 26-28
Spark Ignition System .......................................................... 29-30
General Maintenance ................................................................. 31
Basket Alignment ...................................................................... 32
PAGE
Basket Shimming Instructions ................................................... 33
Air Switch Adjustment .............................................................. 34
Tumbler Assembly .................................................................... 35
Front Panel ........................................................................... 36-37
Door Assembly ......................................................................... 38
Control Panel Cover Assembly ................................................. 40
Lint Drawer Assembly .............................................................. 41
DMP Thermostat Assembly ..................................................... 42
Mechnical Coin Thermostat Assembly ..................................... 43
DMP Coin Control ................................................................... 44
DMP OPL Control .................................................................... 45
Mechnical Coin Control ............................................................ 46
Basket Assembly ....................................................................... 47
RearView .................................................................................. 48
Power Connection Assembly .................................................... 49
Basket Support .......................................................................... 50
Motor Assembly ....................................................................... 51
Air Switch Assembly ................................................................ 52
Idler Pulley Assembly ............................................................... 53
Rear Control Assembly ............................................................. 54
Bonnet Assembly ...................................................................... 55

Page 7
NOTE!
on
marche
Ein
conectado
off
arrêt
Aus
desconectado
Hot! Do Not Touch
Heib! Nicht Beruhren
Haute temperature! Ne pas toucher
Caliente! no tocar
Heet! Niet Aanraken
start
demarrage
Start
arranquedeunmovimiento
emission of heat in general
êmission de chaleur en general
Warmeabgabeallgemein
emisión de calor
cooling
refroidissement
Kuhlen
enfriamiento
dangerous voltage
tension dangereuse
Gafahrliche elektrischeSpannung
tension peligrosa
SYMBOLS
The following symbols are used in this manual and/or on the machine.
Symbol Description

Page 8
rotation in two directions
rotation dans les deux sens
DrehbewigunginzweiRichtungen
movimiento rotativo en los dos sentidos
directionof rotation
sens de mouvement continu de rotation
DrehbewegunginPfeilrichtung
movimientogiratorioorotatorio
en el sentido de la flecha
End of Cycle
caution
attention
Achtung
atencion;precaucion
SYMBOLS
The following symbols are used in this manual and/or on the machine.
Symbol Description

Page 9
Unpacking/General Installation (All Dryers)
Upon arrival of the equipment, any damage in shipment should be
reported to the carrier immediately.
Upon locating permanent location of a unit, care should be taken in
movementandplacementofequipment.
See outline clearance diagrams for correct dimensions.
Remove all packing material such as: tape, manuals, skid, etc.
Leveling: Use spirit level on top of dryer. Adjust leveling bolts on
dryer (see adjustable leveling bolts in maintenance section).
Check voltage and amperes on rating plate before installing the dryer.
The construction of the dryers permits installation side-by-side to
save space or to provide a wall arrangement. Position dryer for the
least amount of exhaust piping and elbows, and allow free access to
the rear of dryer for future servicing of belts, pulleys and motors.
Installation clearance from all combustable material is 0" ceiling
clearance for the first 4" (102 mm) from the front of the dryer. After
the first 4" (102 mm), the ceiling clearance required is 6" (153 mm).
The rear clearance required is 6" (153 mm), and the side clearance is
0".
Before operating dryer, open basket door and remove blocking
between front panel and basket. Read the instruction tags, owner's
manual,warnings, etc.
IMPORTANT
Openingtheclothesloadingdoordeactivatesthedoorswitch
toshutoffthe motors,fan,gas,steam,or electricelement.To
restartthedryer,closethe doorandpressinthe pushtostart
buttonandholdbriefly.
IMPORTANT
This dryer is designed for a capacity maximum load.
Overloadingitwillresultinlongdryingtimesanddampspots
on some clothes.
IMPORTANT
Maximumoperatingefficiencyisdependentuponproperair
circulation. The lint screen must be kept cleaned daily to
insureproperaircirculationthroughoutthedryer.
IMPORTANT
Provideadequateclearanceforairopeningintothecombustion
chamber.
UNPACKING
GENERAL
INSTALLATION(ALL
DRYERS)

Page 10
Outline Dimensions

Page 11
General Specifications
Motor Size......................................................1/2 Hp (0.38 kW) per pocket
Basket Load Capacity ..................................... 30 lb (14 kg) Dryweight per pocket
Basket Size ................................................... 27 (712 mm) Diameter x
30" (762 mm) Deep (per pocket)
Door Opening............................................... 22 5/8" (575 mm)
Total Amps, Voltage, Cycle ................................. Refer to rating plate on dryer
Cabinet Dimensions ..................................... 29" (737 mm) W x 77 3/8" (1965 mm) H
x 46-1/8" (1172 mm) D
Exhaust Air Duct Size .................................. 6" Diameter (152 mm) per pocket
Exaust Air Flow ............................................ 450 cfm (765 m³/h) per pocket
*Btu Input ..................................................... 80,000 Btu per hour per pocket
(20,160 kcal/h)
(Natural or LP gases)
Gas Pressure ................................................ 5" (12 mbar)-12" (30 mbar) WC input (nat. gas)
3.5" (8.7 mbar) WC manifold press. (nat. gas)
11" (27.4 mbar) WC manifold press. (LP gas)
Gas Supply .................................................... 1/2" NPT ( DN15 ) 2 pipe connections
Electronic Ignition ....................................... Direct spark ignition system
Net Weight (approx.) ................................... 965 lb (438 kg)
Domestic Shipping Weight ......................... 908 lb (454 kg)
(1 carton) (approx.)
Export Shipping Dimensions ....................... 31" (787 mm) W x 48 1/8" (1222 mm) D x
82 3/8" (2092 mm) H
Export Cube ................................................. 71 ft³ (2 m³)
* Input ratings as shown are for elevations up to 2000 ft. (610 m). For elevations above
2000 ft. (610 m), ratings should be reduced 4% for each 1000 ft. (305 m) above sea level.
GENERAL
SPECIFICATIONS

Page 12
General Information
The dryer is so designed that when an operator opens the dryer door,
the basket and exhaust fan stops. You can expect fast drying from a
laundry dryer. Hot, dry air is properly and effectively moved through
the basket and exhausted through a lint trap to the atmosphere. The
dryer comes equipped with a front accessable, easy cleaning lint
drawer.
Permanent press, durable press and other modern day fabrics require
the care that your laundry dryers now provide.
At the end of the drying cycle, a timed cool-down control
automatically takes over and continues the rotation of the fan and
basket without heat until the garment load reaches a safe cool
temperature. This function is performed at the end of each drying
cycle and continues for two minutes.
GENERAL
INFORMATION
DRYER
COOL-DOWN
Main Drive Motors
Motor No. Voltage Hz. Phase HP
DA-00428-0 115/208-230 50 1 1/2
DA-00428-0 115/208-230 60 1 1/2
DA-00447-0 220-240/380-415 50 3 1/2
DA-00447-0 208-230/460 60 3 1/2
kW Amps RPM
.38 9.2/4.6 1425
.38 8.0/4.0 1725
.38 2.2/1.1 1425
.38 1.9/1/0 1725

Page 13
Grounding Instructions (Illustration)
Dryers must be electrically grounded by a separate #14 or larger
green wire from the grounding terminal within the service connection
box to a cold water pipe, or through the fourth green wire properly
grounded and connected to the grounding terminal. In all cases, the
grounding method must comply with local electrical code
requirements; or in the absence of local codes, with the National
Electrical Code, ANSI/NFPA 70 or the Canadian Electrical Code,
CA C22.1.
See wiring diagram furnished with dryer. Your Cissell dryer is
completely wired at the factory and it is only necessary for the
electrician to connect the power leads to the wire connectors within
the service connection box on the rear of the dryer. Do not change
wiring without consulting factory as you may void the factory
warranty. Do not connect the dryer to any voltage or current other
than that specified on the dryer rating plate. (Wiring diagram is
located on rear wall of dryer.)
ELECTRICAL
CONNECTIONS
CAUTION: Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and dangerous
operations.
Verify proper operation after servicing.
ELECTRICAL CONTROLS
SERVICING
«Attention. Lors des opérations dentretien
des commandes, ètiqueter tous les fils avant
de les dèconnecter. Toute erreur de câblage
peut être une source de danger et de panne»
Green
GroundingWire
Grounding
Terminal

Page 14
Gas Piping Installation
1. The installation must conform with local codes, or in the
absence of local codes with the National Fuel Gas Code,
ANSI Z223.1 or the CAN/CGA-B149, Installation Codes.
2. Check identification nameplate for type of gas for dryer.
3. Check the altitude of dryer.
4. Check with utilities company for proper gas pressure and gas
supply line.
5. Natural gas onlycheck the gas pressure inlet supply to
dryer, 10.5 inches water column (26.2 mbar) maximum.
Manifold pressure3.5 inches water column (8.8 mbar)
pressure.
6. L.P. gas onlycheck the gas pressure inlet supply to dryer,
13 inches water column (32.4 mbar) maximun. Manifold
pressure10.2 inches water column (25.4 mbar) pressure.
7. A minimum 1/8 - inch NPT plugged tapping, accessible for
tests gage connection, must be installed immediately upstream
of the gas supply connection to the dryer.
GAS PIPING
INSTALLATION
CAUTION:Lowgaspressureandintermittentgaswill
cause gas ignition problems and inadequate drying of
laundry.

Page 15
Gas Piping Installation (Illustration)
The dryer and its individual shutoff valve must be disconnected from the gas supply piping system
during any pressure testing of that system at test pressures in excess of 1/2 psi (3.5 kPa).
The dryer must be isolated from the gas supply piping system by closing it's individual manual shutoff
valve during any pressure testing of the gas supply piping system at test pressures equal to or less
than 1/2 psi (3.5 kPa).
Gas
Valve
Gas
Supply

Page 16
The size of the gas service pipe is dependant upon many variables,
such as tees, lengths, etc. Specific pipe size should be obtained from
the gas supplier. Refer to the Gas Pipe Size chart in this manual for
general gas pipe size information.
CAUTION:Gas looppiping must beinstalled asillustrated
to maintain equal gas pressure for all dryers connected to a
single gas service
Other gas-using appliances should be connected upstream
from the loop.
WARNING:
LIQUIFIEDPETROLEUMGASES ONLY!
A gas pressure regulator for liquified petroleum gases is not
furnished on the gas heated clothes dryers. This regulator is normally
furnished by the installer. In accordance with American Gas
Association (AGA) and Canadian Gas Association (CGA) standards,
a gas pressure regulator, when installed indoors, must be equipped
with a vent limiter or a vent line must be installed from the gas
pressure regulator vent to the outdoors.
Gas Service Installation Instructions
GAS SERVICE
INSTALLATION
INSTRUCTIONS
GAS PRESSURE
REGULATOR FOR
LIQUIFIED
PETROLEUM GASES

Page 17
Gas Pipe Size Chart
TOTAL BTU/HR
(for LP Gas correct
total BTU/HR below by
multiplying by .6)
TOTAL
KCAL
HOUR
GAS PIPE SIZE FOR 1000 BTU (250 KCAL) NATURAL GAS
AT 7 W.C. (17.5 MBAR) PRESSURE
In figuring total length of pipe, make allowance for tees and elbows.
(150 ft.)
45,72 m
(125 ft.)
38,1 m
(100 ft.)
30,48 m
(75 ft.)
22,86 m
(50 ft.)
15,24 m
(25 ft.)
7,62 m
60,000
80,000
100,000
120,000
140,000
160,000
180,000
200,000
300,000
400,000
500,000
600,000
700,000
800,000
900,000
1,000,000
1,100,000
1,200,000
1,300,000
1,400,000
1,500,000
1,600,000
1,700,000
1,800,000
1,900,000
2,000,000
2,200,000
2,400,000
2,600,000
2,800,000
3,000,000
3,200,000
3,400,000
3,600,000
3,800,000
4,000,000
15000
20000
25200
30200
35200
40300
45300
50400
75600
100800
126000
151200
176400
202000
230000
250000
270000
300000
330000
350000
380000
400000
430000
450000
480000
504000
550000
605000
650000
705000
750000
806000
850000
907000
960000
1000000
3/4
3/4
3/4
3/4
3/4
3/4
1
1
1
1 1/4
1 1/4
1 1/2
1 1/2
1 1/2
2
2
2
2
2
2
2
2
2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
3
3
3
3
3
3/4
3/4
3/4
1
1
1
1
1
1 1/4
1 1/4
1 1/2
1 1/2
2
2
2
2
2
2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
3
3
3
3
3
3
3 1/2
3 1/2
3 1/2
3 1/2
3/4
3/4
1
1
1
1
1
1 1/4
1 1/4
1 1/2
1 1/2
2
2
2
2
2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
3
3
3
3
3
3
3
3 1/2
3 1/2
3 1/2
3 1/2
3 1/2
3 1/2
3/4
1
1
1
1
1 1/4
1 1/4
1 1/4
1 1/2
1 1/2
2
2
2
2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
3
3
3
3
3
3
3
3 1/2
3 1/2
3 1/2
3 1/2
3 1/2
3 1/2
4
4
3/4
1
1
1
1
1 1/4
1 1/4
1 1/4
1 1/2
1 1/2
2
2
2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
3
3
3
3
3
3
3
3 1/2
3 1/2
3 1/2
3 1/2
3 1/2
3 1/2
4
4
4
4
3/4
1
1
1
1 1/4
1 1/4
1 1/4
1 1/2
1 1/2
2
2
2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
2 1/2
3
3
3
3
3
3
3
3 1/2
3 1/2
3 1/2
3 1/2
3 1/2
4
4
4
4
4
4

Page 18
Multiple Vented Installation
Whenever possible, each stack dryer tumbler should have an individual short
straight exhaust duct.
Whenever possible, each dryer tumbler in multiple installations should have
individual short straight exhaust ducts.
If an individual or dual duct is not possible, install a long tapered main connector
duct. A duct exceeding 20 (508 mm) should be a custom duct designed by a
professional heating and air conditioner (HVAC) contractor.
Individual tumbler ducts should enter the main connector duct at a 45º angle in
the direction of exhaust air flow.
The diameter of the main connector duct progressively increases as more dryers
are added. (refer to illustration).
Back pressure of ducting system should not exceed 0.3 inch water column
(.75 mbar) when all dryers are operating. Use a manometer for tests. More
detailed ducting information can be obtained directly from your heating and air
conditioning (HVAC) contractor or dealer.
Single dryer
Multiple dryers
Testing
Multiple vents

Page 19
Dryer Installation With Separate Exhaust (Preferred)
For ductwork less than 14 feet (5) and 2 elbows equivalent and less than
0.3 inches (7.7 mm) static pressure:
NEVER exhaust the dryer into a chimney.
NEVER install wire mesh screen over the exhaust or make-up air
area.
NEVER exhaust into a wall, ceiling, or concealed space.
1. Make-up air opening from outside the building may enter the enclosure
from the top or side walls. (See Dryer Make-Up Air Requirements
Chart)
2. Enclosure (plenum) with service door. This separates the dryer air from
the room comfort air. If dryers use room air instead of outside air,
additional heat loss can be another 25 Btu/h (6.3 kcal/h) for each cubic
foot per minute (cfm) (.03m³/min.) used.
3. The installation clearance from all combustible material is 0" ceiling
clearance for the first 4" (102 mm) from the front of the dryer. After
the first 4" (102 mm), the ceiling clearance required is 6" (153 mm).
The rear clearance required is 6" (153 mm) and the side clearance is 0".
4. Heat loss into laundry room from dryer front panels is about 60 Btu/h
per square foot (15 kcal/h per 0.1m²).
DRYER INSTALLATION
WITH SEPARATE EXHAUST
(PREFERRED)

Page 20
Suggested Minimum Dryer Make-upAir Requirements
Dryer Dryer Pocket MaximumAir Flow Duct Size For Required Make-up
Model Capacity Rate per Pocket Service Connection AirArea per Pocket
lb kg cfm m3/h inch mm sq. inch cm2
C 30 ST 30 13.6 450 765 6 153 87 561
C 75 ST 75 34 1000 1700 12 305 192 1240
C 110 110 50 2200 3740 12 305 422 2723
C 110 E/S 110 50 850 1445 8 203 163 1052
C 125 125 56.7 2000 3400 12 305 384 2477
C 150 150 68 2250 3825 12 305 432 2787
HD175 175 79.4 2780 4726 12 305 534 3445
HD190 190 86.2 3000 5100 12 305 576 3716
HD20.1 20 9.1 450 765 6 153 87 561
HD30SL 30 13.6 600 1020 8 203 116 748
HD30.1 30 13.6 625 1063 8 203 120 774
HD50.1 50 22.7 850 1445 8 203 164 1058
HD75.1 75 34 1000 1700 8 203 192 1240
HD80.1 80 36.3 1000 1700 10 254 192 1240
Notes:
1) The Model C 30 ST has 2 pockets per dryer, each pocket has the above listed characteristics;
each pocket is exhausted separately with a 6" (153mm) duct.
2) The Model C 75 ST has 2 pockets per dryer, each pocket has the above listed characteristics;
both pockets have one 8" (203mm) exhaust manifolded into one 12" (305mm) exhaust duct for
exhaust connection.
3) For the C 30 ST and the C 75 ST Models, the Required Make-up Air Area shown in the table
should be doubled since it is shown per pocket,only.