IEC MAY Installation, Operation & Maintenance Manual Download

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• Energy

Efficient

• Easy to

Install

• Extended

Service Life

•  Energy efficient compact blower coils
•  Ideal for educational, hospitality, multi-family, or other commercial environments
•  Designed for ducted applications
•  Nominal CFM range of 600 to 3,000 CFM

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

Modular Hi-Rise Models:

MPY, MXY, MAY/MBY Ditto,

MMY/MSY, MUY, and MGY

Summary of Contents for MAY

Page 1: ...ls Ideal for educational hospitality multi family or other commercial environments Designed for ducted applications Nominal CFM range of 600 to 3 000 CFM Modular Hi Rise Series Fan Coils INSTALLATION OPERATION MAINTENANCE MANUAL Modular Hi Rise Models MPY MXY MAY MBY Ditto MMY MSY MUY and MGY ...

Page 2: ...each product may be changed without notice and may not be as described herein Please contact IEC for information regarding current design and product specifications Statements and other information contained herein are not express warranties and do not form the basis of any bargain between the parties but are merely IEC s opinion or commendation of its products Manufacturer s standard limited warr...

Page 3: ... Knockout Locations Typical 16 Supply Air Installation 17 Demolition 18 Installation SECTION III Finishing Installation All Models 18 Grille Ductwork Installation 18 Outside Air Installation if required 18 Electrical Connections 19 Exposed Unit Touch up and Repainting 19 Concealed Unit Enclosure SECTION IV Start up All Models 20 Operating Conditions 20 Cooling Heating System 20 Air System Balancin...

Page 4: ... damage or injury in the event of a leak or component failure during testing Always protect adjacent flammable material when welding or soldering Use a suitable heat shield material to contain sparks or drops of solder Have a fire extinguisher readily available The manufacturer assumes no responsibility for personal injury or property damage resulting from improper or unsafe practices during the h...

Page 5: ...the straight and square cabinet alignment The unit must be lowered into the space taking care to properly align the risers to engage the riser swaged sections on the unit below The risers should never be bent or pushed together to be passed through the floor slot and should never be lifted up or pulled down to meet the risers on the floor below or above The risers are designed with a three inch sw...

Page 6: ...lled on the Return Air side of the cabinet MUY Cabinet Return Air HR CR D HS CS HR CR D HS CS HR CR D HS CS D CR HS CS HR R D S HR Hot Water Return HS Hot Water Supply D Drain CR Cold Water Return CS Cold Water Supply R Return D Drain S Supply 2 or 4 pipe Figure 1 Unit orientation is determined based on the location of the risers in the building The riser side of the Universal Modular unit always ...

Page 7: ...full length of the knockout 7 Use adhesive or glue to re attach insulation that has pulled away from the unit during knockout removal process CAUTION Toxic residues and loose particles resulting from manufacturing and field piping techniques such as joint compounds soldering flux and metal shavings may be present in the unit and the piping system Special consideration must be given to system clean...

Page 8: ...ust be in vertical alignment Variations in floor to floor dimensions may require field work such as cutting off or extending the risers This operation is the responsibility of the installer The riser joint filler material must be selected to withstand the total operating pressure both static and pumping head to which the system will be subjected Low temperature lead alloy solders such as 50 50 and...

Page 9: ...n lbs to prevent leaks 9 Locate the p trap drain and rubber hose factory installed to the drain pan connection in the bottom of the unit as shown in Figure 9 10 Push the rubber drain hose over the riser drain stubout Be careful that you do not bend the drain stubout 11 Adjust the hose clamp over the riser stubout and rubber hose to hold in place as shown in Figure 9 12 Test for leaks Any and all l...

Page 10: ... piece Be careful of sharp edges 8 Use a sharp retractable knife to trim any excess insulation using knockout hole as pattern Unit Wall Unit Insulation 90 Duct Flange Figure 11 9 Use duct pliers hand seamers to fold duct flange out of the unit 90 for each side of the supply air opening along duct break see Figure 10 The 90 flanges can now be used as drywall stops to prevent coverage of discharge o...

Page 11: ...iamese Ditto Fan Coil Care should be taken however not to penetrate the supply or return water risers or internal piping Given the levelness of the floor and or the fan coil assembly some shimming may be necessary Assemble the specified wall construction up to and over the top of the fan coil unit C see Figure 15 With the fire wall separation being complete the drywall skin on the surface of the i...

Page 12: ...lable from the factory riser end caps air vents and or flushing loops are normally provided on the job by the installer Proper riser installation and vertical positioning in the unit provides for a unit piping run out to the service valves which are centered in the access slots and level or sloping down slightly away from the riser This prevents condensation from running back to the riser and poss...

Page 13: ...oring the unit it is then ready for the various service connections such as riser joints and electrical At this time it should be verified that the proper types of service are actually provided to the unit On those units requiring chilled water and or hot water the proper main size and water temperature should be available to the unit The electrical service to the unit should be compared to the un...

Page 14: ...ob site Risers must be anchored to the building structure to limit riser expansion and contraction movement to a maximum of 3 Riser anchoring and expansion compensation is not included in the factory supplied unit and must be field provided While some special riser features are available from the factory riser end caps air vents and or flushing loops are normally provided on the job by the install...

Page 15: ...vent it from bending or twisting during installation as shown in Figure 19 Be careful to not over tighten swivel connections CAUTION Hose connection torque requirements are 350 in lbs 10 0 in lbs to prevent leaks 6 Locate the unit s coil fitting 7 The plastic flare caps on the end of the coil fitting should be removed and discarded 8 Use a wrench to tighten the swivel connections The baffle acts a...

Page 16: ... and the hoses Variations in floor to floor dimensions may require field work such as cutting off or extending the risers This operation is the responsibility of the installer The riser joint filler material must be selected to withstand the total operating pressure both static and pumping head to which the system will be subjected Low temperature lead alloy solders such as 50 50 and 60 40 are nor...

Page 17: ...rilles should be installed in accordance with the project plans and specifications If not included on the unit or furnished from the factory supply and return grilles should be provided as recommended in the product catalog Outside Air Installation if required Units provided with outside air for ventilation should have some form of low temperature protection to prevent coil freeze up This protecti...

Page 18: ... for the products being used To repaint the factory baked enamel the finish should be prepared by light sanding with 280 grit sand paper or 000 or 0000 fine steel wool The surface may also be wiped with a liquid surface etch cleaning product such as No Sand or Pasceo These items should be available at most paint product stores It should be noted that the more conscientiously this preparation is do...

Page 19: ...out dirt and debris which may have collected in the piping during construction During this procedure the system should be flushed from the supply riser to the return riser through a cross over loop at the end of the riser column and all unit service valves must be in the closed position This prevents foreign matter from entering the unit and clogging the valves and metering devices Strainers shoul...

Page 20: ...tment after installation the control board settings for Low Medium and High could be adjusted by turning screws as shown in the picture using a small Phillips Screwdriver It will adjust the control voltage to the motor A clockwise rotation increases the voltage to the motor while counter clockwise rotation reduces it CAUTION Both of the procedures described below require the control box to be powe...

Page 21: ...er the proper system operation is established the appropriate system operating conditions such as various water temperatures and flow rates should be recorded in a convenient place for future reference Before and during water system balancing conditions may exist due to incorrect system pressures which may result in noticeable water noise or undesired valve operation After the entire system is bal...

Page 22: ...coil fins from the leaving air face This should again be followed by vacuuming Units provided with the proper type of air filters replaced regularly will require less frequent coil cleaning Electric Resistance Heater Assembly Electric resistance heaters typically require no normal periodic maintenance when unit air filters are changed properly The operation and service life may be affected by othe...

Page 23: ... furnished from or recommended by the factory Pleated media or extended surface filters should not be used since the high air pressure drops encountered with these types of filters are not compatible with the type of fan coil unit covered in this manual Consult the factory for applications using filter types other than the factory standard or optional product Filters Permanent A maintenance schedu...

Page 24: ...rial number 3 Unit hand connection right or left hand 4 Complete part description including any numbers On warranty replacements in addition to the information previously listed the unit shipping code which appears on the upper right hand corner of the serial plate is required Contact the factory for authorization to return any parts such as defective parts replaced in warranty All shipments retur...

Page 25: ...ections Install ductwork fittings and grilles as required Flexible duct connections at unit Proper supply and return grille type and size Control outside air for freeze protection Insulate all ductwork as required Electrical Connections Refer to unit wiring diagram Connect incoming power service or services Install and connect furnish only parts Unit Start up General visual unit and system inspect...

Page 26: ...he event of a breach of the Limited Express Warranty IEC will only be obligated at IEC s option to repair the failed part or unit or to furnish a new or rebuilt part or unit in exchange for the part or unit which has failed If after written notice to IEC s factory in Oklahoma City Oklahoma of each defect malfunction or other failure and a reasonable number of attempts by IEC to correct the defect ...

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Page 28: ...I100 90001407 IOM 051 Revision 9 2 2018 2015 2018 International Environmental Corporation IEC PO Box 2598 Oklahoma City OK 73101 2598 P 405 605 5000 F 405 605 5001 www iec okc com Modular Hi Rise Series Fan Coils INSTALLATION OPERATION MAINTENANCE MANUAL IEC Modular Hi Rise IOM Part Number I100 90001407 IOM 051 Revision 9 2 2018 2015 2018 International Environmental Corporation IEC ...

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