American Dryer Corp. ID-170 User manual

ADC Part No. 113331
ID-170
(HSI)
Installation Manual
For replacement parts, contact the reseller from which the dryer
was purchased or
American Dryer Corporation
88 Currant Road
Fall River MA 02720-4781
Telephone: [phone] / Fax: [phone]
E-mail: [email protected]
www.amdry.com
081701JEV/calbert
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
vapor and liquids in the vicinity of this or any
other appliance.
WHAT DO YOU 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.
AVERTISSEMENT: Assurez-vous de bien
suivre les instructions données dans cette
notice pour réduire au minimum le risque
d’incendie ou d’explosion ou pour éviter tout
dommage matériel, 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
appareil.
QUE FAIRE SI VOUS SENTEZ UNE ODEUR
DE GAZ:
*Ne pas tenter d’allumer d’appareil.
*Ne touchez à aucun interrupteur. Ne pas
vous servir des téléphones se trouvant dans
le bâtiment où vous vous trouvez.
*Évacuez la pièce, le bâtiment ou la zone.
*Appelez immédiatement 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 être assurés
par un installateur ou un service d’entretien
qualifié ou par le fournisseur de gaz.

Retain This Manual In A Safe Place For Future Reference
American Dryer Corporation products embody advanced concepts in engineering, design, and safety. If this product is
properly maintained, it will provide many years of safe, efficient, and trouble-free operation.
ONLY qualified technicians should service this equipment.
OBSERVEALLSAFETYPRECAUTIONS displayed on the equipment or specified in the installation manual included with
the dryer.
The following “FOR YOUR SAFETY” caution must be posted near the dryer in a prominent location.
ID-170
“IMPORTANT NOTE TO PURCHASER”
Information must beobtained from your local gas supplier on the instructions
to be followed if the user smells gas. These instructions must be posted in a
prominent location near the dryer.
FOR YOUR SAFETY
Do not store or use gasoline or
other flammable vapors or
liquids in the vicinity of this or
any other appliance.
POUR VOTRE SÉCURITÉ
Ne pas entreposer ni utiliser d’essence
ni d’autres vapeurs ou liquides
inflammables dans le voisinage de cet
appareil ou de yout autre appareil.
We have tried to make this manual as complete as possible and hope you will find it useful. ADC reserves the right to make
changes from time to time, without notice or obligation, in prices, specifications, colors, and material, and to change or
discontinue models. The illustrations included in this manual may not depict your particular dryer exactly.
Important
For your convenience, log the following information:
DATE OF PURCHASE________________________________ MODELNO. __________________________________________
RESELLER’S NAME ________________________________________________________________________________________
Serial Number(s) ________________________________________________________________________________________
________________________________________________________________________________________
________________________________________________________________________________________
Replacement parts can be obtained from your reseller or theADCfactory. When orderingreplacement partsfromthefactory,
you can FAX your order to ADC at [phone] or telephone your order directly to the ADC Parts Department at (508)
678-9000. Please specify the dryer model number andserialnumberin addition to the description andpart number,sothat
your order is processed accurately and promptly.

IMPORTANT
YOUMUSTDISCONNECTANDLOCKOUTTHEELECTRICSUPPLY ANDTHEGAS
SUPPLY OR THE STEAM SUPPLY BEFORE ANY COVERS OR GUARDS ARE
REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING,
ADJUSTING, INSTALLATION, OR TESTING OF ANY EQUIPMENT PER OSHA
(Occupational Safety and Health Administration)STANDARDS.
CHILDREN SHOULD NOTBEALLOWED TO PLAY ON OR NEAR THE DRYER(S).
WARNING
CHILDREN SHOULD BESUPERVISED IF NEAR DRYER(S) IN OPERATION.
DRYER(S) SHOULD NEVER BE LEFT UNATTENDED WHILE IN OPERATION.
CAUTION
FOR YOUR SAFETY
DO NOT DRY MOP HEADS IN THE DRYER.
DO NOT USE DRYER IN THE PRESENCE OF DRY CLEANING FUMES.
WARNING
UNDER NO CIRCUMSTANCES should the dryer door switch the lint drawer switch,
or the heat safety circuit devices ever be disabled.
“Caution: Label all wires prior to
disconnection when servicing controls. Wiring
errors can cause improper operation.”
«Attention: Lordesopérationsd’entretien
des commandes étiqueter tous fils avant
de les déconnecter. Toute erreur de
câblage peut étre une source de danger et
de panne.»

WARNING
The dryer must never be operated with any of the back guards, outer tops, or service
panels removed. PERSONAL INJURY OR FIRE COULD RESULT.
IMPORTANT
PLEASE OBSERVEALLSAFETY PRECAUTIONS displayedon the equipmentand/or
specified in the installation manual included with the dryer.
WARNING
DRYER MUST NEVER BE OPERATED WITHOUT THE LINT FILTER/SCREEN IN
PLACE, EVEN IF AN EXTERNAL LINT COLLECTION SYSTEM IS USED.
Dryersmust not beinstalled or stored in an area where itwillbe exposedto waterorweather.
The wiring diagram for the dryer is located in the front electrical control box area.

Table of Contents
SECTION I
IMPORTANT INFORMATION..........................................................................3
A. Receiving and Handling ............................................................................................................... 3
B. Safety Precautions ....................................................................................................................... 4
SECTION II
SPECIFICATIONS/COMPONENT IDENTIFICATION..................................6
A. Specifications .............................................................................................................................. 6
B. Component Identification............................................................................................................. 8
SECTION III
INSTALLATION PROCEDURES ....................................................................10
A. Location Requirements.............................................................................................................. 10
B. Unpacking/Setting Up ................................................................................................................11
C. Dryer Enclosure Requirements .................................................................................................. 14
D. Fresh Air Supply Requirements ................................................................................................. 15
E. Exhaust Requirements............................................................................................................... 16
F. Electrical Information ................................................................................................................ 22
G. Gas Information......................................................................................................................... 26
H. Steam Information..................................................................................................................... 30
I. Preparation For Operation/Start-Up .......................................................................................... 34
J. Preoperational Tests .................................................................................................................. 35
K. Compressed Air Requirements ................................................................................................... 38
L. Shut Down Instructions .............................................................................................................. 39
SECTION IV
SERVICE/PARTS INFORMATION .................................................................40
A. Service ..................................................................................................................................... 40
B. Parts ......................................................................................................................................... 40
SECTION V
WARRANTY INFORMATION .........................................................................41
A. Returning Warranty Cards ......................................................................................................... 41
B. Warranty................................................................................................................................... 41
C. Returning Warranty Parts .......................................................................................................... 41

SECTION VI
ROUTINE MAINTENANCE ............................................................................43
A. Cleaning ................................................................................................................................... 43
B. Adjustments .............................................................................................................................. 45
C. Lubrication ............................................................................................................................... 45
SECTION VII
REVERSING TIMER SPIN/DWELL ADJUSTMENTS...................................46
SECTION VIII
DATA LABEL INFORMATION.........................................................................47
A. Data Label................................................................................................................................ 47
SECTION IX
PROCEDURE FOR FUNCTIONAL CHECK OF REPLACEMENT
COMPONENTS .................................................................................................49
SECTION X
BURNER AND BASKET (TUMBLER)/LINT CHAMBER
MANUAL RESET HI-LIMIT INSTRUCTIONS ..............................................50

3
SECTION I
IMPORTANT INFORMATION
A. RECEIVING AND HANDLING
The dryer is shipped in a protective stretch wrap cover with protective cardboard corners and top cover (or
optional box) as a means of preventing damage in transit. Upon delivery, the dryer and/or packaging, and
wooden skid should be visually inspected for shipping damage. If any damage whatsoever is noticed, inspect
further before delivering carrier leaves.
Dryers damaged in shipment:
1. ALL dryers should be inspected upon receipt and before they are signed for.
2. If there is suspected damage or actual damage, the trucker's receipt should be so noted.
3. If the dryer is damaged beyond repair, it should be refused. Those dryers which were not damaged in a
damaged shipment should be accepted, but the number received and the number refused must be noted
on the receipt.
4. If you determine that the dryer was damaged after the trucker has left your location, you should call the
delivering carrier's freight terminal immediately and file a claim. The freight company considers this
concealed damage. This type of freight claim is very difficult to get paid and becomes extremely difficult
when more than a day or two passes after the freight was delivered. It is your responsibility to file freight
claims. Dryer/parts damaged in transit cannot be claimed under warranty.
5. Freight claims are the responsibility of the consignee, and ALL claims must be filed at the receiving end.
ADC assumes no responsibility for freight claims or damages.
6. If you need assistance in handling the situation, please contact the ADC Traffic Manager at (508)
678-9000.
IMPORTANT:The dryer must be transported and handled in an upright position at ALLtimes.

4
B. SAFETY PRECAUTIONS
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 loss of life.
WARNING:The dryer must never be operated with any of the back guards, outer tops, or
service panels removed. PERSONAL INJURY OR FIRE COULD RESULT.
1. DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other
appliance.
2. Purchaser/user should consult the local gas supplier for proper instructions to be followed in the event the
user smells gas. The instructions should be posted in a prominent location.
3. WHAT TO DO IF YOU SMELL GAS...
a. DO NOT try to light any appliance.
b. DO NOT touch any electrical switch.
c. DO NOT use any phone in your building.
d. Clear the room, building, or area of ALLoccupants.
e. Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.
f. If you cannot reach your gas supplier, call the fire department.
4. Installation and service must be performed by a qualified installer, service agency, or gas supplier.
5. Dryer(s) must be exhausted to the outdoors.
6. Although ADC produces a very versatile dryer, there are some articles that, due to fabric composition or
cleaning method, should not be dried in it.
WARNING:Dry only water washed fabrics. DO NOT dry articles spotted or washed in dry
cleaning solvents, a combustible detergent, or "all purpose" cleaner.
EXPLOSION COULD RESULT.
WARNING:DO NOT dry rags or articles coated or contaminated with gasoline, kerosene, oil, paint,
or wax.
EXPLOSION COULD RESULT.
WARNING:DO NOT dry mop heads. Contamination by wax or flammable solvent will create a fire
hazard.
WARNING:DO NOT use heat for drying articles that contain plastic, foam, sponge rubber, or
similarly textured rubber materials. Drying in a heated basket (tumbler) may damage
plastics or rubber and may be a fire hazard.

5
7. A program should be established for the inspection and cleaning of lint in the burner area, exhaust ductwork,
and area around the back of the dryer. The frequency of inspection and cleaning can best be determined
from experience at each location.
WARNING:The collection of lint in the burner area and exhaust ductwork can create a potential fire
hazard.
8. For personal safety, the dryer must be electrically grounded in accordance with local codes and/or the
National Electrical Code ANSI/NFPA NO. 70-LATEST EDITION or in Canada, the Canadian Electrical
Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION.
NOTE:Failure to do so will VOID THE WARRANTY.
9. UNDER NO CIRCUMSTANCES should the dryer door switch, the lint drawer switch, or the heat
safety circuit devices ever be disabled.
WARNING: PERSONALINJURY OR FIRE COULD RESULT.
10. This dryer is not to be used in the presence of dry cleaning solvents or fumes.
11. Remove articles from the dryer as soon as the drying cycle has been completed.
WARNING:Articles left in the dryer after the drying and cooling cycles have been completed can
create a fire hazard.
12. DO NOT operate steam dryers with more than 125 PSI (8.61 bars) steam pressure. Excessive steam
pressure can damage the steam coil and/or harm personnel.
13. Replace leaking flexible steam hoses or other fixtures immediately. DO NOT operate the dryer with
leaking flexible hoses. PERSONAL INJURY MAY RESULT.
14. READ AND FOLLOW ALL CAUTION AND DIRECTION LABELS ATTACHED TO THE
DRYER.
15. For safety, proper operation, and optimum performance, the dryer must not be operated with a load less
than sixty-six percent (66%), 112 lbs (50.80 kg) of its rated capacity.
WARNING: YOU MUST DISCONNECT ANDLOCKOUTTHEELECTRICSUPPLY AND
THEGASSUPPLY OR THE STEAM SUPPLY BEFORE ANY COVERS OR
GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS
FOR CLEANING, ADJUSTING, INSTALLATION, OR TESTING OF ANY
EQUIPMENT PER OSHA (Occupational Safety and Health Administration)
STANDARDS.

6
SECTION II
SPECIFICATIONS/COMPONENT IDENTIFICATION
A. SPECIFICATIONS
IMPORTANT:Gas dryers and steam dryers must be provided with a clean, dry, regulated 80 PSI
+/- 10 PSI (0.68 bars +/- 5.51 bars) air supply.
NOTE:ADCreserves the right to make changes in specifications at any time without notice or
obligation.
MAXIMUM CAPACITY (DRY WEIGHT) 170 lbs 77.26 kg
BASKET (TUMBLER) DIAMETER 51-1/2" 130.81 cm
BASKET (TUMBLER) DEPTH 42-1/2" 107.95 cm
BASKET (TUMBLER) MOTOR 1-1/2 HP 1.12 kw
BLOWER (FAN/IMPELLOR) MOTOR 7-1/2 HP 5.6 kw
DOOR OPENING (DIAMETER) 31-3/8" 79.7 cm
BASKET (TUMBLER) VOLUME 51.2 cu. ft. 1.45 cu.m.
DRYERS PER 20'/40' CONTAINER 3/7
DRYERS PER 45'/48' TRUCK 8/8
VOLTAGE AVAILABLE 208-460v 3ø 3, 4w 50/60Hz
APPROX. WEIGHT (UNCRATED) 1,900 lbs 861.8 kg
APPROX. WEIGHT (CRATED) 2,066 lbs 937.14 kg
HEAT INPUT 550,000 btu/hr 138,600 kcal/hr
AIRFLOW 3,700 cfm 104.8 cmm
INLET PIPE SIZE 1-1/4" F.P.T.
COMPRESSED AIR VOLUME 2.5 cfh @ 80 PSI 0.07 cmh @ 5.51 bars
COMPRESSED AIR CONNECTION 1/8" N.P.T.
VOLTAGE AVAILABLE 208-460v 3ø 3, 4w 50/60Hz
APPROX. WEIGHT (UNCRATED) 2,053 lbs 931.2 kg
APPROX. WEIGHT (CRATED) 2,220 lbs 1,007 kg
AIRFLOW 4,400 cfm 124.6 cmm
COMPRESSED AIR VOLUME 3.25 cfh @ 80 PSI 0.09 cmh @ 5.51 bars
COMPRESSED AIR CONNECTION 1/8" N.P.T.
STEAM CONSUMPTION BOILER HP
NORMAL LOAD
725 lbs/hr 329.1 kg/hr 19
OPERATING STEAM PRESSURE STEAM SUPPLY STEAM RETURN
125 PSI max 8.6 bars 1-1/2" 1-1/2"
Shaded areas are stated in metric equivalents
Gas
Steam

7
NOTE:ADCreserves the right to make changes in specifications at any time without notice or
obligation.
Specifications
IDG-170 (Gas)
IDS-170 (Steam)

8
Illus. No. Description
1Microprocessor Control/Keyboard (touch pad) Panel Assembly (controls)
2Control (top access) Door Assembly
3Main Door Assembly
4Lint Drawer
5Lint Door
6Wire Diagram (located behind control door)
7Data Label and Installation Label
8Top Console (module) Assembly
B. COMPONENT IDENTIFICATION
1. Dryer Front View

9
Illus. No. Description
1Drive (basket [tumbler]) Motor
2Drive Assembly
3Blower Motor
4Idler Assembly
5Installation Label
6Data Label
7Heating Unit
2. Dryer Rear View

10
SECTION III
INSTALLATION PROCEDURES
Installation should be performed by competent technicians in accordance with local and state codes. In the
absence of these codes, the installation must conform toapplicableAmerican NationalStandards: ANSI Z223.1-
LATEST EDITION (National Fuel Gas Code) or ANSI/NFPA NO. 70-LATEST EDITION (National Electrical
Code) or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA-B149.1-M91
(Natural Gas) or CAN/CGA-B149.2-M91 (Liquid Propane [L.P.] Gas) or LATEST EDITION (for General
Installation and Gas Plumbing) or Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION
(for Electrical Connections).
A. LOCATION REQUIREMENTS
Before installing the dryer, be sure the location conforms to local codes and ordinances. In the absence of such
codesorordinances the locationmust conform withtheNationalFuelGasCodeANSI.Z223.1LATESTEDITION,
or in Canada, the installation must conform to applicable Canadian Standards: CAN/CGA-B149.1-M91 (Natural
Gas) or CAN/CGA-B149.2-M91 (L.P. Gas) or LATEST EDITION (for General Installation and Gas Plumbing).
1. The dryer must be installed on a sound level floor capable of supporting its weight. Carpeting must be
removed from the floor area that the dryer is to rest on.
IMPORTANT: “The dryer must be installed on noncombustible floors only.”
2. The dryer must not be installed or stored in an area where it will be exposed to water and/or weather.
3. The dryer is for use in noncombustible locations.
4. Provisions for adequate air supply must be provided as noted in this manual (refer to Fresh Air Supply
Requirements in Section D).
5. Clearance provisions must be made from combustible construction as noted in this manual (refer to Dryer
Enclosure Requirements in Section C).
6. Provisions must be made for adequate clearances for servicing and for operation as noted in this manual
(refer to Dryer Enclosure Requirements in Section C).
7. Dryer must be exhausted to the outdoors as noted in this manual (refer to Exhaust Requirements in
Section E).
8. Dryer must be located in an area where correct exhaust venting can be achieved as noted in this manual
refer to Exhaust Requirements in Section E).
IMPORTANT:Dryer should be located where a minimum amount of exhaust duct will be necessary.
9. The dryer must be installed with a proper exhaust duct connection to the outside.

11
1. Leveling Dryer
a. To level the dryer, place 4-inch (10.16 cm) metal shims or other suitable material under the base pads.
It is suggested that the dryer be tilted slightly to the rear (refer to the illustration above).
b. The V-belts are disconnected from the basket (tumbler) drive motor for shipping. Reconnect V-belts
before starting the dryer.
10. The dryer must be installed with provisions for adequate combustion and make-up air supply.
CAUTION: This dryer produces combustible lint and must be exhausted to the outdoors. Every 6
months, inspect the exhaust ducting and remove any lint build up.
B. UNPACKING/SETTING UP
Remove protective shipping material (i.e., plastic wrap, and/or optional shipping box) from dryer.
IMPORTANT: Dryer must be transported and handled in an upright position at ALLtimes.
The dryer can be moved to its final location while still attached to the skid or with the skid removed. To unskid
the dryer, locate and remove the four (4) lag bolts securing the base of the dryer to the wooden skid. Two (2) are
at the rear base, and two (2) are located in the bottom of the lint chamber. To remove the two (2) lag bolts
located in the lint chamber area, remove the lint drawer and the three (3) Phillips head screws securing the lint
door in place.

12
2. If more headroom is needed when moving the dryer into position, the top console (module) may be removed.
a. To Remove Top Console (module)...
1) Disconnect the ground wire (A in the illustration below) located at the rear upper left corner of
the dryer.
2) Remove the eight (8) sets of nuts and washers (B in the illustration below) holding the console
(module) to the base.
3) Disconnect the white plug (C in the illustration below) connector located on the top of the rear
electric service/relay box (provides power to the heat circuit).
4) Disconnect air connection from the 3-way micro valve.
5) Lift the console (module) off of the dryer base.
IMPORTANT:The dryer must be transported and handled in an upright position at ALLtimes.

13
3. Exhaust Ductwork
NOTE: A transition piece for the exhaust is shipped inside the basket (tumbler). This transition piece is
for locations with round exhaust ductwork.
a. To install the transition piece, align the four (4) clinch studs into the four (4) clearance holes on the
dryer.
b. Using the four (4) free spin wash nuts (included with the transition piece), tighten the wash nuts on the
clinch studs, which will secure the transition piece to the dryer.
c. The round duct can now be connected to the dryer.

14
NOTE:When fire sprinkler systems are located above the dryers, a minimum of 18-inches (45.72 cm)
above the dryer console (module) is required. Dryers may be positioned sidewall to sidewall,
however, 1 or 2-inches (2.54 or 5.08 cm) is suggested for ease of installation and
maintenance. Allowances must be made for the opening and closings of the control door and
the lint door.
C. DRYER ENCLOSURE REQUIREMENTS
Even though a 12-inch (30.48 cm) clearance is acceptable, it is recommended that the rear of the dryer be
positioned approximately 2 feet (24-inches) from the nearest obstruction (i.e., wall) for ease of installation,
maintenance, and service. Bulkheads and partitions should be made from noncombustible materials. The
clearance between the bulkhead header and the dryer must bea minimum of 4-inches (10.16 cm) and must not
extend more than 4-inches (10.16 cm) to the rear of the front. A 2-inch (5.08 cm) clearance is required between
the bulkhead facing and the top of the dryer.
NOTE:Bulkhead facing should not be installed until after the dryer is in place. Ceiling area must be
located a minimum of 12-inches (30.48 cm) above the dryer top console (module) and
18-inches (45.72 cm) for steam models.

15
D. FRESH AIR SUPPLY REQUIREMENTS
When the dryer is operating, it draws in room air, heats it, passes this air through the basket (tumbler), and
exhausts it out of the building. Therefore, the room airmust be continually replenished from the outdoors. If the
make-up air is inadequate, drying time and drying efficiency will be adversely affected. Ignition problems and
sail switch "fluttering" problems may result, as well as premature motor failure from overheating.
Air supply (make-up air) must be given careful consideration to assure proper performance of each dryer. An
unrestricted source of air is necessary for each dryer. An airflow of 3,700 cfm (cubic feet per minute) (104.77
cmm [cubic meters per minute]) must be supplied to each gas dryer and 4,400 cfm (cubic feet per minute)
(124.59) must be supplied to each steam dryer. As a general rule, an unrestricted air entrance from the
outdoors (atmosphere) of a minimum of 4 square feet (0.37 square meters) is required for each gas dryer and a
minimum of 4.75 square feet (0.44 square meters) for each steam dryer.
To compensate for the use of registers or louvers used over the openings, this make-up airmust beincreased by
approximately thirty-three percent (33%). Make-up air openingsshould not be located in an area directly near
where exhaust vents exit the building.
It is not necessary to have a separate make-up air opening for each dryer. Common make-up air openings are
acceptable. However, they must be set up in such a manner that the make-up air is distributed equally to ALL
the dryers. The dryer must be installed with provisions for adequate combustion and make-up air supply.
EXAMPLE:For a bank of six (6) dryers, two (2) unrestricted openings measuring 3 feet by 4 feet (0.91
meters by 1.21 meters) (12 square feet each [1.11 square meters]) is acceptable.
Allowances must be made for remote or constricting passageways or where dryers are located at excessive
altitudes or predominantly low pressure areas.
IMPORTANT:Make-up air must be provided from a source free of dry cleaning solvent fumes.
Make-up air that is contaminated by dry cleaning solvent fumes will result in
irreparable damage the motors and other dryer components.
NOTE:Component failure due to dry cleaning solvent fumes will VOID THE WARRANTY.

16
E. EXHAUST REQUIREMENTS
1. General Exhaust Ductwork Information
Exhaust ductwork should be designed and installed by a qualified professional. Improperly sized ductwork
will create excessive back pressure which results in slow drying, increased use of energy, overheating of
the dryer, and shutdown of the burner by the airflow (sail) switches, burner hi-limits, or basket (tumbler)
hi-heat thermostats. The dryer must be installed with a proper exhaust duct connection to the outside.
CAUTION:This dryer produces combustible lint and must be exhausted to the outdoors.
CAUTION:DRYER MUST BE EXHAUSTED TO THE OUTDOORS.
CAUTION: IMPROPERLY SIZED OR INSTALLED EXHAUSTDUCTWORKCAN
CREATE APOTENTIALFIREHAZARD.
NOTE:When a dryer is exhausted separately, it is recommendedthat a back draft damper be
installed.
NOTE:When dryers are exhausted into a multiple (common) exhaust line, each dryer must be
supplied with a back draft damper.
The ductwork should be laid out in such a way that the ductwork travels as directly as possible to the
outdoors with as few turns as possible. Single or independent dryer venting is recommended.
When single dryer venting is used, the ductwork from the dryer to the outside exhaust outlet must not
exceed20 feet (6.09 meters). In the case of multiple (common) dryer venting, the distance from the last
dryer to the outside exhaust outlet must not exceed20 feet (6.09 meters). The shape of the ductwork is
not so critical so long as the minimum cross-sectional area is provided. It is suggested that the use of 90º
turns be avoided; use 30º and/or 45º bends/angles instead. The radius of the elbowsshould preferably be
1-1/2 times the diameter of the duct. Excluding basket (tumbler)/dryer elbow connections or elbows used
for outside protection from the weather, no more than two (2) elbows should be used in the exhaust duct
run. If more than two (2) elbows are used, the cross-sectional area of the ductwork must be increased in
proportion to the number of elbows used.
ALL ductwork should be smooth inside with no projections from sheet metal screws or other obstructions,
which will collect lint. When adding ducts, the duct to be added should overlap the duct to which it is to be
connected. ALL ductwork joints must be taped to prevent moisture and lint from escaping into the
building. Inspection door should be installed at strategic points in the exhaust ductwork for periodic
inspection and cleaning of lint from the ductwork.
IMPORTANT:Exhaust back pressure measured by a manometer in the exhaust duct must be no less
than 0 and must not exceed 0.3 inches (0.74 mb) of water column (W.C.).
NOTE:When the exhaust ductwork passes through a wall, ceiling, or roof made of combustible
materials, the opening must be 2-inches (5.08 cm) larger than the duct (all the way around).
The duct must be centered within this opening.