American Dryer Corp MDG-30 installation manual Multiple Dryer Common Venting

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MULTIPLE DRYER (COMMON) VENTING

HORIZONTAL VENTING

If it is not feasible to provide separate exhaust ducts for each dryer, ducts for individual dryers may be channeled into a common main duct. Each dryer is provided with a back draft damper. The individual ducts should enter the bottom or side of the main duct at an angle not more than 45° in the direction of the airflow. No more than four (4) dryers should be connected to one (1) main common duct run.

The main common duct may be any shape so long as the minimum cross-sectional area is provided. The main duct should be tapered with the diameter increasing before each individual 8-inch (20.32 cm) duct is added (refer to Illus. C and Illus. D).

Illus. C

MULTIPLE DRYER VENTING (HORIZONTAL)

Horizontal venting must not exceed 20 feet (6.1 meters) - this calculation compensates for the use of a maximum of only one (1) elbow, which is the outside outlet protection.

NOTE: Distance between dryer single ducts being connected to the main common duct must be a minimum of 31-3/8” (79.7 cm) dryer width.

Ductwork should be laid out in such a manner where allowances are made at rear area of the dryer for removal of rear service panels or guards.

Illus. C shows the minimum cross section area for horizontal multiple dryer venting. These figures must be increased in proportion if the main duct run from the last dryer to where it exhausts has numerous elbows or is unusually long.

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Contents MDG-30 Coin Installation Manual Retain This Manual In a Safe Place For Future Reference Foryour Safety Page Table of Contents Section Procedure for Functional Check of Replacement Receiving and Handling Important InformationWhat to do if YOU Smell GAS Safety PrecautionsPage Specifications SpecificationsSpecifications GAS only Unpacking and Setting UP Installation ProceduresLocation Requirements Dryer Enclosure Requirements Fresh AIR Supply Requirements Exhaust Requirements Single Dryer Venting Vertical Venting Multiple Dryer Common Venting Illus. D Importantventingreminders Electrical Requirements Electrical InformationMust be Provided Single-Phase 1ø Electrical Connections Leads 120 GASGAS Information Rating Kcal/hr22,680 This Pipe Size Requirement Page Preparation for Operation and START-UP Preoperational Tests Basket Tumbler Coating Preoperational InstructionsPage Select Temperature Shutdown Instructions Service SERVICE/PARTS InformationParts Returning Warranty Cards Warranty InformationWarranty Cleaning Routine MaintenanceSuggested Cleaning Schedule Lubrication AdjustmentsNo light emitting diode L.E.D. display TroubleshootingDrive motor is not operating does not start Microprocessor controller computer display reads dSFL Blower motor is not operating does not startNo heat, ignitor sparks, burner goes on and off right away Microprocessor controller computer display reads doorDryer operates but is taking too long to dry Dryer is making scraping noise at basket tumbler area Condensation on main door glassExcessive noise or vibration Main burners are burning with a yellow flame Heating unit is not operating all temperature selectionsDryer operates but is taking too long to dry load Dryer is cycling on hi-limit thermostat Data Label Datalabel InformationSerial Number Procedure for Functional Check Replacement Components Page Page Burner Manual Reset HI-LIMIT Instructions 12/15/99-150