Alliance Laundry Systems 907003062 manual Steam Requirements, Piping Recommendations

Page 45

Steam Requirements

NOTE: Machines require a constant 80 to 100 psig (5.62 to 7.03 kg/sq. cm) steam service for optimum operation. The maximum allowable steam pressure for use with 60 Hertz or 50 Hertz tumble dryers is 125 psig (8.6 bar). In no case may the pressure exceed the above value. Drying performance is significantly reduced at lower steam pressures.

Obtain specific steam service pipe sizes from steam system supplier or a qualified steam fitter.

∙Refer to Figure 14 and Figure 15 for proper steam pipe configurations.

∙To prevent condensate draining from headers to tumble dryer, piping should have a minimum

12 inch (305 mm) rise above respective header. Do not make steam connection to header with a horizontal or downward facing tee or elbow.

∙Whenever possible, horizontal runs of steam lines must drain, by gravity, to respective steam header. Water pockets or an improperly drained steam header will provide wet steam, causing improper operation of tumble dryer. If pockets or improper drainage cannot be eliminated, install a bypass trap to drain condensate from the low point in the steam header to the return.

∙In both steam supply and steam return line, it is recommended that each have a pipe union and shut-off valve. This will enable you to disconnect the steam connections and service the tumble dryer while your laundry facility is in operation.

∙Connect the steam solenoid valve to the related steam coil inlet connection with nipples, flex hoses, unions and tee.

∙Strainers may require cleaning due to materials from hoses or pipes.

∙Install vacuum breaker (optional), bucket trap with built-in strainer and check valve. For successful operation of tumble dryer, install trap 18 inches (457 mm) below coil and as near to the tumble dryer as possible. Inspect trap carefully for inlet and outlet markings and install according to trap manufacturer's instructions. If steam is gravity returned to boiler, omit trap but install vacuum breaker and check valve in return line near tumble dryer.

∙Gravity return requires entire return plumbing be below steam coil outlets.

∙Install union and shut-off valve in return line and make final pipe connections to return header.

NOTE: To prevent water hammering, route return lines below outlets of steam coils.

Piping Recommendations

∙Trap each steam coil individually. Always keep the trap clean and in good working condition.

∙When tumble dryer is on the end of a line of equipment, extend header at least 4 feet

(1.2 meters) beyond tumble dryer. Install shut-off valve, union, check valve and bypass trap at end of line. If gravity return to boiler, omit trap.

∙Insulate steam supply and return line for safety of operator and safety while servicing tumble dryer.

∙Keep tumble dryer in good working condition. Repair or replace any worn or defective parts.

WARNING

All system components must have a 125 psig (8.6 bar) working pressure. Shut-off valves must be installed upstream of the steam solenoid valve and downstream of each steam trap so components can be isolated for maintenance or emergency purposes.

All components (solenoid valve, traps) must be supported to minimize loads on the tumble dryer steam coil connections.

W480R2

70420801 (EN)

© Copyright, Alliance Laundry Systems LLC – DO NOT COPY or TRANSMIT

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Contents
Tumble Dryers Page What to do if YOU Smell GAS For Your Safety Contents Installing Steam Trap and Making Condensate Wiring Diagram Location Customer ServiceIntroduction Model IdentificationSerial Plate Location IntroductionConversion Table Multiply To Obtain Safety Information Safety Information Important Safety InstructionsW055R1 Specifications and Dimensions Specifications and Dimensions Pound Tumble Dryer Dimensions and Exhaust Outlet LocationsCabinet Dimensions Models 120L/N/E Exhaust Outlet Dimensions and Locations Models 120L/N/EExhaust Outlet Dimensions and Locations Models 170L/N/S Cabinet Dimensions Models 170L/N/SModels Electrical Connection Gas Connection Electric and Gas Connection Locations for Gas Models120L/N 170L/NElectric and Steam Connection Locations for Steam Models 170SModels Electrical Connection 120S Models 120E Electric Connection Location for Electric ModelsPre-Installation Inspection InstallationLocation Requirements Materials Required Obtain locally All ModelsInstallation Position and Level the Tumble Dryer Before Placing Tumble Dryer into ServiceRequired for CE Models Only General Information Installing CE Gas Drying Tumble DryersQuantity Pressure Orifice Code Mbar Supply Burner Country Gas Type Group OrificeBasic Configuration Specific Conversion Procedures How to Adjust Gas Valve Governor/Regulator Layout Exhaust RequirementsMake-Up Air VentingExhaust Requirements Alternate Venting for 120 Pound tumble dryersDuct Diameter Equivalent Length Rigid Straight Duct Individual VentingTMB2361N Duct Pound Stations Mm Duct ONE Manifold AssemblyTWO Manifold Assemblies Gas Requirements Gas Requirements .4 mm Gas Pipe Loop Gas Supply Pipe Sizing and Looping400,000 Sizes shown in inches mm 300,000500,000 600,000High Altitude Orifice Sizing Non-CE Models Altitude Orifice NewGas Rate Feet Inches Quantity Grounding Instructions Electrical RequirementsElectrical Requirements For CE Models OnlyGround and Terminal Block Locations Service/Ground LocationNon-CE Gas Electric To Connect Electrical Service to the Tumble Dryer Ferrite Ring Installation Jumper Configuration InstructionsElectrical Requirements Piping Recommendations Steam RequirementsSteam Requirements Thermal Oil PrepPound Tumble Dryers Model Steam Pressure Minimum Steam Trap SizePounds Condensate/Hour 80-100 4 in. NPT 517 Based on maximum psi Gas Burner Air Shutter AdjustmentsLoading Door Switch Airflow SwitchAdjustments Loading Door StrikeBelt Drive Removing Tumble Dryer from Service
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