IEC Modular Hi-Rise, MPY, MXY, MAY, MBY Ditto Installation, Operation & Maintenance Manual

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• Energy Efficient

• Easy to Install

• Extended Service Life

• Energy ecient 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

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

International Environmental Corporation (IEC) works continually

to improve its products. As a result, the design and specifications

of 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 warranty applies.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

SECTION I – Receipt and Initial Installation

4 Receipt

4 Unpacking and Inspection

5 Handling and Installation

SECTION II – Product Line Specific Installation

5 Part 1 – Universal Hi-Rise Units (MUY)

6 Potential Unit Configurations

6 Unit Knockout Locations (Typical)

7 Supply, Return, and Drain Riser Installation

8 Riser to Unit Installation

8 Riser to Drain Installation

10 Supply Air Installation

10 Part 2 – Ditto and Siamese Ditto ( MAY/MBY)

12 Part 3 – High Rise, Ditto, and Siamese Ditto (MPY, MAY/

MBY, MMY/MSY)

12 Supply, Return, and Drain Risers

13 Part 4 – Mega Mod Units (MGY)

14 Supply, Return, and Drain Risers

14 Riser to Unit Installation

15 Riser to Drain Installation

16 Unit 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 Balancing

21 Control Board Adjustment

22 Water Treatment

22 Water System Balancing

23 Controls Operation

SECTION V – Routine Maintenance (All Models)

23 Motor/Blower Assembly

23 Coil

24 Electric Resistance Heater Assembly

24 Electrical Wiring and Controls

24 Valves and Piping

24 Filters, Throwaway

25 Filters, Permanent

25 Drain

25 Replacement Parts

SECTION VI – Checklists

25 Receiving and Inspection

25 Handling and Installation

25 Cooling/Heating Connections

25 Ductwork Connections

25 Electrical Connections

26 Unit Start-up

26 Terms and Conditions

SECTION I – Receipt and Initial Installation

Receipt

International Environmental Corporation fan coil units represent a prudent investment oering trouble-free operation and long service with proper installation, operation, and regular maintenance.

Your equipment is initially protected under the manufacturer’s standard warranty; however, this warranty is provided under the condition that the steps outlined in this manual for initial inspection, proper installation, regular periodic maintenance, and everyday operation of the equipment be followed in detail. This manual should be fully reviewed in advance before initial installation, start-up, and any maintenance. Should any questions arise, please contact your local sales representative or the factory BEFORE proceeding.

The equipment covered by this manual is available with a variety of options and accessories. Consult the approved unit submittals, order acknowledgement, and other manuals for details on unit options and accessories.

NO ATTEMPT SHOULD BE MADE TO HANDLE, INSTALL, OR SERVICE ANY UNIT WITHOUT FOLLOWING SAFE PRACTICES REGARDING MECHANICAL EQUIPMENT.

The equipment must always be properly supported. Temporary supports used during installation or service must be adequate to hold the equipment securely.

All power must be disconnected before any installation or service is attempted. More than one power source may be supplied to a unit. Power to remote mounted control devices may not be supplied through the unit.

Never wear bulky or loose tting clothing when working on any mechanical equipment. Gloves should be worn for proper protection against heat and other possible injuries. Safety glasses or goggles should always be worn when drilling, cutting, or working with chemicals such as refrigerants or lubricants.

Never pressurize any equipment beyond specied test pressures. Always pressure test with an inert uid or gas such as clear water or dry nitrogen to avoid possible

damage or injury in the event of a leak or component failure during testing.

Always protect adjacent ammable material when welding or soldering. Use a suitable heat- shield material to contain sparks or drops of solder. Have a re extinguisher readily available.

The manufacturer assumes no responsibility for personal injury or property damage resulting from improper or unsafe practices during the handling, installation, service, or operation of any equipment.

Unpacking and Inspection

All units are carefully inspected at the factory throughout the manufacturing process under a strict detailed quality assurance program, and, where possible, ALL major components and sub-assemblies are carefully tested for proper operation and veried for full compliance with factory standards. Operational testing of some customer-furnished components such as electronic control valves and digital controllers may be a possible exception.

Each unit is carefully packaged for shipment to avoid damage during normal transit and handling. Equipment should always be stored in a dry place, and in the proper orientation as marked on the carton.

All shipments are made F.O.B. factory and is the responsibility of the receiving party to inspect the equipment upon arrival. Any obvious damage to the carton and/or its contents should be recorded on the bill of lading and a claim should be led with the freight carrier.

After determining the condition of the carton exterior, carefully remove each unit from the carton and inspect for hidden damage. At this time, check to make sure that “furnished only” items such as thermostats, grilles etc. are accounted for whether packaged separately or shipped at a later date. Any hidden damage should be recorded and immediately reported to the carrier and a claim should be led. In the event a claim for shipping damage is led, the unit, shipping carton, and all packing must be retained for physical inspection by the freight carrier. All equipment should be stored in the factory shipping carton with internal packing in place until installation.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

At the time of receipt, the equipment type and arrangement should be veried against the order documents. Should any discrepancy be found, the local sales representative should be notied immediately so that proper action may be taken. Should any questions arise concerning warranty repairs, the factory must be notied BEFORE any corrective action is taken. Where local repairs or alterations can be accomplished, the factory must be fully informed of the extent and expected cost of those repairs before work is begun. Where factory operations are required, the factory must be contacted for authorization to return equipment and a Return Authorization Number will be issued. Unauthorized return shipments of equipment and shipments not marked with an authorization number will be refused. In addition, any claims for unauthorized expenses will not be accepted by the manufacturer.

Handling and Installation

The units covered in this manual are identied by a tag on top of the unit which shows the oor and riser number for which each unit is designed. Units should not be installed at locations other than that marked on the unit identication tag. If no specic detail is shown on tag for unit location then determine conguration for the Universal unit based on information within this IOM. Should any questions arise regarding unit conguration, contact the sales representative or the factory BEFORE proceeding.

While all equipment is designed and fabricated with sturdy materials and may present a rugged appearance, great care must be taken to assure that no force or pressure be applied to the coil, risers, or piping during handling. Never use the risers to lift the unit. Also, depending on the options and accessories, some units could contain delicate components that may be damaged by improper handling. Lifting or supporting the cabinet only at the top and bottom should be avoided to maintain 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 oor slot and should never be lifted up or pulled down to meet the risers on the oor below or above. The risers are designed with a

three-inch swage to accommodate a two-inch overlap and minor oor to oor variations.

The equipment covered in this manual IS NOT suitable for outdoor installations. The equipment should never be stored or installed where it may be subjected to a hostile environment such as rain, snow, or extreme temperatures.

During and after installation, special care must be taken to prevent foreign material such as paint, plaster, and drywall dust from being deposited in the drain pan or on the motor or blower wheels. Failure to do so may have serious adverse eects on unit operation, and in the case of the motor and blower assembly, may result in immediate or premature failure. All manufacturer’s warranties are void if foreign material is allowed to be deposited on the motor or blower wheels of any unit. Some units and/or job conditions may require some form of temporary covering during construction.

While the manufacturer does not become involved in the design and selection of support methods and components, it should be noted that unacceptable system operating characteristics and/or performance may result from improper or inadequate unit structural support. Due to variations in building construction, oor plans, and unit congurations, each installation is dierent. The actual step-by-step method of installation may vary from unit to unit. However, the risers should be moved as little as possible to avoid damage to the unit and internal components.

On certain units, shipping screws or braces must be removed after the unit is installed. Be sure to check all tags on the unit to determine which, if any, of these devices need to be removed.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

SECTION II – Product Line Specic Installation

Part 1 – Universal Hi-Rise Units (MUY)

The unique design of the Universal Modular Fan Coil unit allows for eld conguration for each unit. Air discharge, riser, drain, and outside air knockouts have been strategically located on each unit. Risers, shown with unit, are for reference only. All risers are factory fabricated and shipped loose for eld installation.

It is important that you identify all of the unit feature locations and which knockouts you intend to use before proceeding with the installation. Also, it must be determined whether your application requires a Mating Unit (primary/ secondary) and its conguration. Consult your local sales representative or the factory for further details on primary/ secondary arrangements.

Potential Unit Congurations

Risers: Three Locations–The pre-installed Supply, Return, and Drain risers (2-pipe or 4-pipe applications) can be oriented on any of three sides of the unit (see Figure 1).

NOTE: Risers can not be installed on the Return Air side of the

cabinet.

MUY

Cabinet

Return Air

HR CRDHS CS

CRHSCS

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 determines the rear of the unit (see Figure 2).

Return Air: Single Location–The Return Air/Access panel may then be oriented on the left, right, or front of the unit.

Supply Air: Five Locations (4 sides and top) includes stitched design for 1/2” duct anges.

Outside Air: Two Locations–Either side adjacent to the Return Air opening.

NOTE: Outside Air opening may not be used on a side if risers are

configured on that same side.

Unit Knockout Locations (Typical)

Side Supply Air Knockout (1 per side)

Riser Knockouts (4 per side, except on Return Air side)

Drain Knockout (1 per side, except on Return Air side)

Outside Air

Knockout

(2 sides only,

adjacent to

Return Air

opening)

SIDE VIEW

Return

Air

Optional Electrical Knockouts

Figure 3A

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

Top Supply Air Knockout

TOP VIEW

Electrical Knockouts

Figure 3B

Knockout

Slot

Knockout Tab

KNOCKOUTS:

Knockout

Knockout Tab

Drain

Knockout

Supply and Return

Figure 4

Drain

Insulation

Cut Line

Supply and Return

Insulation Cutline

Figure 5

Supply, Return, and Drain Riser Installation

1. Three sides of each Universal Modular unit have four Supply and Return riser knockouts along the center and one Drain knockout near the lower part of the unit (see Figure 3A). Identify whether your application uses a 2-pipe or 4-pipe conguration.

a. 2-pipe congurations: typically use the two inner

riser knockouts.

b. 4-pipe congurations: will use all four riser

knockouts.

2. Locate and mark the riser and drain knockouts that apply to your particular unit application, insuring proper orientation of the Return Air opening in room.

3. Insert a at head screw driver into knockout slot shown in Figure 4.

4. Pry screw driver back and forth until knockout tabs break away from the unit.

5. Discard knockout. Be careful of sharp edges.

6. Use a sharp retractable knife (see Figure 5) and vertically cut the insulation down the center of the riser and drain knockouts the 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 eld piping techniques such as joint compounds, soldering

ux, and metal shavings may be present in the unit and the piping system. Special consideration must be given to system cleanliness when connecting to solar, domestic or potable water systems.

Submittals and product literature detailing unit operation, controls, and connections should be thoroughly reviewed BEFORE beginning the connection and testing of risers and piping.

To assure optimal unit performance, the supply connection(s) are marked on the unit’s coil with an “S” meaning supply or inlet and “R” meaning return or outlet indicating ow direction to and from the coil. Blue letters mark the chilled water connections and red letters mark the hot water connections.

The unit’s internal piping is designed to accommodate a total riser vertical movement of ±1-1/2”, due to thermal expansion and/or contraction, when positioned properly at the job site. Risers must be anchored to the building structure to limit expansion and contraction movement to a maximum of 3”. Riser anchoring and expansion

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

compensation is not included in the unit and must be provided. Riser end caps, air vents, and/or ushing loops must be provided at the jobsite by the installer.

Proper eld riser installation and vertical positioning in the unit should have a pipe run-out to the service valves which are centered in the knockout access slots and that slope down slightly away from the riser (see Figure 6). This prevents condensation from running back to the riser and possible damage from dripping at the bottom of a riser column. Each job has specic requirements and satisfying those requirements is the responsibility of the installer.

Riser to Unit Installation

Ball

Valve

Riser Stubout

Insulation

Threaded

Fitting

Unit insulation

Outer

Cabinet

Riser Knockout

Slot

Figure 6

Before making the riser joints, the riser insulation must be pulled back away from the joint and protected from heat during the brazing process. Each riser joint must be in vertical alignment. Variations in oor-to-oor dimensions may require eld work such as cutting o or extending the risers. This operation is the responsibility of the installer. The riser joint ller 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 normally not suitable.

Flexible Hose Kit

Riser

Ball

Valve

Riser Stubout

Insulation

Bae

Connection point to any factory

furnished and installed

components.

Coil

Figure 7

Back-up Wrench

Ball

Valve

Wrench

Swivel

Connection

Figure 8

Riser to Drain Installation

Drain Pan

Drain

Clamp

Riser Knockout

Unit Insulation

P-Trap

Unit Wall

Riser

Riser Stubout

Figure 9

1. After the applicable Supply, Return, and Drain knockouts have been removed, carefully position the unit so that the riser ball valves penetrate into the unit through the riser knockouts making sure the insulation penetrates into the unit as shown in Figures 6, 7, and 9.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

2. Before anchoring the equipment in place, the unit must

be leveled and the cabinet must be plumb and squared.

The unit may be anchored in place by bolting directly

through the unit oor or attaching to the cabinet in some location that will not interfere with drywall or other items such as the supply grille, thermostat, or return access panel. When attaching to the unit cabinet, care must be taken to not penetrate the cabinet in locations that may damage internal components or wiring. The mounting technique is a matter of choice; however, the unit should always be anchored securely to prevent movement during construction and riser expansion and contraction.

After anchoring the unit, it is then ready for the various

service connections such as riser connections and electrical.

3. The plastic are caps on the end of the riser ball valves should be removed and discarded.

4. All Universal Modular units use reinforced braided stainless steel exible hose kits for piping between eld installed risers and unit water coils as shown in Figure 7. The hose kit design has threaded connections on each end. The hose kits allow for riser uctuations due to thermal expansion.

5. Use a wrench to tighten the swivel connections. Use a backup wrench to hold the riser ball valve stationary to prevent it from bending or twisting during installation as shown in Figure 8. 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 tting.

7. The plastic are caps on the end of the coil tting should be removed and discarded.

8. Use a wrench to tighten the swivel connections. The bae acts as a secondary wrench. Be careful to not over tighten swivel connections.

CAUTION: Hose connection torque requirements are 350 in. lbs. +10/-0 in. 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 leaks should be repaired before proceeding with installation. When testing with air or some other gas, it might be necessary to tighten stem packing nuts on some valves to maintain air pressure in the riser. Pressure testing risers with water should be done with the unit service valves closed to prevent ushing debris into the unit valve packages. This will also allow risers to be drained down after testing in the winter to avoid freeze-up problems. In the event that leaking or defective components are discovered, the sales representative must be notied BEFORE any repairs are attempted. All leaks should be repaired before proceeding with the unit installation.

13. After system integrity has been established, the riser insulation must be pulled back into place over the joint and glued or sealed to prevent sweating and heat loss or gain. All of the risers including the riser stubouts should be properly covered with insulation. Internally mounted chilled water piping and valves are located over the drain pan and need not be insulated.

Any reproong requirements where risers or piping penetrate oors or walls are the responsibility of the installer. This work should be done only after all pressure testing is completed. The reproong method used must accommodate pipe expansion and contraction and the piping must be protected from abrasion and chemical attack. The pipe insulation also must be maintained to prevent sweating and must be protected from wear or erosion at the joint between the insulation and the reproong material.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

When no risers are ordered for the Universal Modular unit, it is the responsibility of the installer to make sure that an isolation ball valve is installed between each supply and return piping connection to the unit. Flare ttings are factory provided to allow connection between the ball valves and the hoses.

Supply Air Installation

Knockout Tab (10 places)

Duct Break (4 places)

Knockout Tab Trim Line

Figure 10

1. Each side of the unit has one supply air knockout as well as a supply air knockout on the top of the unit (see Figures 3A and 3B).

2. Determine which supply air opening/openings are required for your application.

NOTE: The supply air opening on the riser side of the unit

should not be used.

3. Use a sharp retractable knife to trim insulation using center knockout slot/trim line as pattern (see Figure10).

4. Use a sharp standard needle nose pliers and grab knockout tab (see Figure 10).

5. Twist or pry pliers back and forth until knockout tab breaks away from unit.

6. Repeat for all supply air tabs until all have been broken.

7. Discard center knockout 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 ange out of the unit 90˚ for each side of the supply air opening along duct break (see Figure 10). The 90˚ anges can now be used as drywall stops to prevent coverage of discharge opening (see Figure 11).

10. Use adhesive or glue to re-attach insulation that has pulled away from the unit during knockout removal process.

11. For ducted applications tape should be applied along and around all of the supply air opening knockouts to prevent air leakage.

All installations should be made in compliance with all governing codes and ordinances. Compliance with all codes

is the responsibility of the installing contractor.

Part 2 – Ditto and Siamese Ditto ( MAY/MBY)

The Ditto and Siamese Ditto Modular Hi-Rise Fan Coils have been designed to serve two separate rooms. These products are classied by Underwriters Laboratories Inc. for use in Penetration Firestop Systems. Control Number 27WL. They carry a one-hour rating. See UL Fire Resistance Directory for more information.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

MBY

MAY

Figure 12 – Ditto

MBY

MAY

Figure 13 – Siamese Ditto

The control lines for the drywall track and studs should be laid out in the oor and ceiling (A) (see Figure 14).

Tracking may be installed now or after the unit is set.

Position the Ditto or Siamese Ditto fan coil assembly between two rooms with the unit drywall separation spotted over the wall control lines.

If not already installed, install the oor and ceiling tracks up to and over the Ditto or Siamese Ditto Fan Coil unit.

Next, position the vertical studs and fasten into each of the stud pockets formed into the chase side panels (B) (see Figure 14).

(B) Install wall

stud into pocket formed by chase side panel

Chase Side Panel

(A) Drywall Track

and Stud Control Lines

Install studs from top of unit to ceiling (4 corners)

Figure 14 – Unit As Shipped

The studs may be mechanically fastened to the Ditto or Siamese 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 oor and/or the fan coil assembly, some shimming may be necessary.

Assemble the specied wall construction up to and over the top of the fan coil unit (C) (see Figure 15).

With the re-wall separation being complete, the drywall skin on the surface of the individual fan coils can be applied. Drywall can be applied directly to the surface, or, if necessary, studding may be installed on the corners for vertical control (D) (see Figure 15).

For ease of installation of the access panel, apply drywall on the return air side directly to the surface of the unit (E) (see Figure 15). When applying the wall board directly to the unit cabinet, it may be necessary to shim the wall board in some areas to achieve the desired nished wall surface.

After all drywalling and painting is complete, install thermostats, supply air grilles and return air panels.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

CAUTION: Avoid penetrating the riser, coil, piping and electrical system with sheetrock screws.

Wall Studs

gypsum board (To wall and over top of unit)

(D) Install gypsum

board to unit sides

(E) Install

gypsum board to face of unit with cut outs for supply, return and thermostat

Figure 15 – On-Site Installation

Part 3 – High Rise, Ditto, and Siamese Ditto (MPY, MAY/ MBY, MMY/MSY)

Supply, Return, and Drain Risers

CAUTION: Toxic residues and loose particles

resulting from manufacturing and eld piping

techniques such as joint compounds, soldering ux, and metal shavings may be present in the unit and the piping system. Special consideration must be given to system cleanliness when connecting to solar, domestic or potable water systems.

Submittals and product literature detailing unit operation, controls, and connections should be thoroughly reviewed BEFORE beginning the connection and testing of risers and piping.

The supply and return connections are marked on the coil stub-outs and the valve package with an “S” meaning supply or inlet and “R” meaning return or outlet indicating ow direction to and from the coil. Blue letters mark the

chilled water connections and red letters mark the hot water connections.

The unit internal piping is designed to accommodate a total riser vertical movement of ±3/4”, due to thermal expansion and/or contraction, when positioned properly at the job site. Risers must be anchored to the building structure to limit expansion and contraction movement to a maximum of 1-1/2”. Riser anchoring and expansion compensation is not included in the factory-supplied unit and must be eld provided. While some special riser features are available from the factory, riser end caps, air vents, and/or ushing 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 possible damage from dripping at the bottom of a riser column. Each job has specic requirements and satisfying those requirements is the responsibility of the installer.

Chilled water and hot water risers should never be piped to drain down into the condensate riser. Extensive water damage can occur due to drain overow. Drain chilled and hot water risers to a remote location away from the unit such as sink, room and oor drains.

After the connections are completed, the system should then be tested for leaks. When testing with air or some other gas, it might be necessary to tighten stem packing nuts on some valves to maintain air pressure in the riser. Pressure testing risers with water should be done with the unit service valves closed to prevent ushing debris into the unit

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

valve packages. This will also allow risers to be drained down after testing in the winter to avoid freeze-up problems.

In the event that leaking or defective components are discovered, the sales representative must be notied BEFORE any repairs are attempted. All leaks should be repaired before proceeding with the installation.

After system integrity has been established, the riser insulation must be pulled back into place over the joint and glued or sealed to prevent sweating and heat loss or gain. Internal chilled water piping and valves are located over the drain pan and need not be insulated.

Before anchoring the equipment in place, the unit must be leveled and the cabinet must be squared and brought into line with any adjacent or included walls.

The unit may be anchored in place by bolting directly through the unit oor or attaching to the cabinet in some location that will not interfere with drywall or other items such as the supply grille, thermostat, or return access panel. When attaching to the unit cabinet, care must be taken to not penetrate the cabinet in locations that may damage internal components or wiring. The mounting technique is a matter of choice; however, the unit should always be anchored securely to prevent movement during construction and riser expansion and contraction.

After anchoring the unit, it is then ready for the various service connections such as riser joints and electrical. At this time, it should be veried 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 unit nameplate to verify compatibility. The routing and sizing of all piping, and the type and sizing of all wiring and other electrical components such as circuit breakers, service switches, etc. should be determined by the individual job requirements, and should not be based on the size and/or type of connection provided on the equipment. All installations should be made in compliance with all governing codes and ordinances. Compliance with all

codes is the responsibility of the installing contractor.

Part 4 – Mega Mod Units (MGY)

The unique design of the Mega Modular Fan Coil unit allows for eld conguration of each unit. Risers, shown with unit, are for reference only. All risers are factory fabricated and shipped loose for eld installation.

It is important that you identify all of the unit feature locations before proceeding with the installation. Also, it must be determined whether your application requires a Mating Unit (primary/secondary) and its congurations. Consult your local sales representative or the factory for further details on primary/secondary arrangements.

Return Air

MGY 14-20

Cabinet

HR CRDHS CS

HR = Hot Water Return HS = Hot Water Supply D = Drain CR = Cold Water Return CS = Cold Water Supply

CRHSCS

R = Return D = Drain S = Supply

2- or 4-pipe

RightLeft

Rear

Front

Figure 16

Unit orientation is determined based on the location of the risers in the building. Risers can only be installed on the rear side of the unit and it always determines the rear of the Mega Mod unit. The return air is always on the front (see Figure 16).

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

Supply, Return, and Drain Risers

CAUTION: Toxic residues and loose particles

resulting from manufacturing and eld piping

Submittals and product literature detailing unit operation, controls, and connections should be thoroughly reviewed BEFORE beginning the connection and testing of risers and piping.

The supply and return connections are marked on the coil stub-outs and the valve package depending on your conguration. “CS” means cold water supply, “CR” means cold water return, “HS” means hot water supply, and “HR” means hot water return to indicate ow direction to and from the coil. Blue letters mark the chilled water connections and red letters mark the hot water connections.

The unit internal piping is designed to accommodate a total riser vertical movement of ±1-1/2”, due to thermal expansion and/or contraction, when positioned properly at the job 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 eld provided. While some special riser features are available from the factory, riser end caps, air vents, and/or ushing loops are normally provided on the job by the installer.

Riser to Unit Installation

Ball

Valve

Riser Stubout

Insulation

Threaded

Fitting

Unit insulation

Outer

Cabinet

Riser Knockout

Slot

Figure 17

Flexible Hose Kit

Riser

Ball

Valve

Riser Stubout

Insulation

Bae

Connection point to any factory

furnished and installed

components.

Coil

Figure 18

Back-up Wrench

Ball

Valve

Wrench

Swivel

Connection

Figure 19

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

Riser to Drain Installation

Drain Pan

Drain

Clamp

Riser Knockout

Unit Insulation

P-Trap

Unit Wall

Riser

Riser Stubout

Figure 20

1. Carefully position the unit so that the riser ball valves penetrate into the unit through the riser slot making sure the insulation penetrates into the unit as shown in Figures 17 and 18.

2. Before anchoring the equipment in place, the unit must

be leveled and the cabinet must be plumb and squared.

The unit may be anchored in place by bolting directly

through the unit’s oor or attaching to the buildings walls through the cabinet walls in some location that will not interfere with drywall or other items such as the supply grille, thermostat, or return access panel. When attaching sheetrock to the unit cabinet, care must be taken to not penetrate the cabinet in locations that may damage internal components or wiring. The mounting technique is a matter of choice; however, the unit should always be anchored securely to the building to prevent movement during construction and riser expansion and contraction.

After anchoring the unit, it is then ready for the various

service connections such as riser connections and electrical.

3. The plastic are caps on the end of the riser ball valves should be removed and discarded.

4. All Mega Modular units use reinforced braided stainless steel exible hose kits for piping between eld installed risers and unit water coils as shown in Figure 18. Each hose has threaded connections on each end. The hose kits allow for riser uctuations due to thermal expansion.

5. Use a wrench to tighten the swivel connections. Use a backup wrench to hold the riser ball valve stationary to prevent 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 tting.

7. The plastic are caps on the end of the coil tting should be removed and discarded.

8. Use a wrench to tighten the swivel connections. The bae acts as a secondary wrench. Be careful to not over tighten swivel connections.

CAUTION: Hose connection torque

requirements are 350 in. lbs. +10/-0 in. 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 20.

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 20.

12. Test for leaks. Any and all leaks should be repaired before proceeding with installation. When testing with air or some other gas, it might be necessary to tighten stem packing nuts on some valves to maintain air pressure in the riser. Pressure testing risers with water should be done with the unit service valves closed to prevent ushing debris into the unit valve packages. These valves will also allow risers to be drained down after testing in the winter to avoid freeze-up problems. In the event that leaking or defective components are discovered, the sales representative must be notied BEFORE any repairs are attempted. All leaks should be repaired before proceeding with the unit installation.

13. After system integrity has been established, the riser insulation must be pulled back into place over the joint and glued or sealed to prevent sweating and heat loss

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

or gain. All of the risers including the riser stubouts should

be properly covered with insulation. Internally mounted

chilled water piping and valves are located over the drain

pan and need not be insulated.

When no risers are ordered for the Mega Modular unit, it is the responsibility of the installer to make sure that a eld supplied isolation ball valve is installed between each supply and return piping connection to the unit. Flare ttings are factory provided to allow connection between the ball valves and the hoses.

Variations in oor-to-oor dimensions may require eld work such as cutting o or extending the risers. This operation is the responsibility of the installer. The riser joint ller 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 normally not suitable.

All installations should be made in compliance with all governing codes and ordinances. Compliance with all

codes is the responsibility of the installing contractor.

Unit Knockout Locations (Typical)

Side Supply Air Knockout (1 per side)

SIDE VIEW

Mega Mod Cabinet

Optional Supply Plenum

Figure 21

Top Supply Air Knockout

TOP VIEW

Electrical

Knockouts

Figure 22

Supply Air Installation

Knockout Tab (10 places)

Duct Break (4 places)

Knockout Tab Trim Line

Figure 23

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

1. If the unit has been ordered with a supply air plenum, then each side of the unit has one supply air knockout as well as a supply air knockout on the top of the unit (see Figures 21 and 22).

2. Determine which supply air opening/openings are required for your application.

NOTE: The supply air opening on the riser side of the unit

should not be used.

3. Use a sharp retractable knife to trim insulation using center knockout slot/trim line as pattern (see Figure23).

4. Use a sharp standard needle nose pliers and grab knockout tab (see Figure 23).

5. Twist or pry pliers back and forth until knockout tab breaks away from unit.

6. Repeat for all supply air tabs until all have been broken.

7. Discard center knockout 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

90º

Duct Flange

Figure 24

9. Use duct pliers (hand seamers) to fold duct ange out of the unit 90˚ for each side of the supply air opening along duct break (see Figure 23). The 90˚ anges can now be used as drywall stops to prevent coverage of discharge opening (see Figure 24).

10. Use adhesive or glue to re-attach insulation that has pulled away from the unit during knockout removal process.

11. For ducted applications tape should be applied along and around all of the supply air opening knockouts to prevent air leakage.

SECTION III – Finishing Installation (All Models)

Grille/Ductwork Installation

All ductwork and/or supply and return grilles should be installed in accordance with the project plans and specications. 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 protection may be any of several methods such as a low-temperature thermostat to close the outside air damper or a preheat coil to temper the outside air before it reaches the unit.

It should be noted that none of these methods will adequately protect a coil in the event of power failure. The safest method of freeze protection is to use glycol in the proper percent solution for the coldest expected air temperature.

The manufacturer assumes no responsibility for undesirable system operation due to improper system design, equipment or component selection, and/or installation of ductwork, grilles, and other related components.

Electrical Connections

The unit serial plate lists the unit electrical characteristics such as the required supply voltage, fan and heater amperage and required circuit ampacities. The unit wiring diagram shows all unit and eld wiring. Since each project is dierent and each unit on a project may be dierent, the installer must be familiar with the wiring diagram and serial plate on the unit BEFORE beginning any wiring.

The unit electrical supply is designed to enter through knockouts provided in the top of the unit and pass down through matching knockouts in the control section top.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

Where space allows, power may be pulled directly through the side of the cabinet into the control section.

All components furnished for eld installation by either the factory or the controls contractor should be located and checked for proper function and compatibility. All internal components should be checked for shipping damage, and any loose connections should be tightened to minimize problems during start-up.

Any devices such as fan switches or thermostats that have been furnished from the factory for eld installation must be wired in strict accordance with the wiring diagram that appears on the unit. Failure to do so could result in personal injury or damage to components, and will void all manufacturer’s warranties.

The fan motor should never be controlled by any wiring or device other than the factory-furnished switchor thermostat/switch combination without factory authorization. Fan motor(s) may be temporarily wired for use during construction only with prior factory approval in strict accordance with the instructions issued at that time.

All eld wiring should be done in accordance with governing codes and ordinances. Any modication of the unit wiring without factory authorization will void all of the factory warranties and will nullify any agency listings.

The manufacturer assumes no responsibility for any damages and/or injuries resulting from improper eld installation and/ or wiring.

Exposed Unit Touch-up and Repainting

Return access and exposed cabinet units may be furnished with a baked enamel nish. Small scratches in this nish may be repaired with touch-up paint available from the factory. Some colors of touch-up paint are available in aerosol containers and all touch-up paint is available in pint, quart, and gallon cans. Contact the factory for availability.

Proper safety procedures should be followed regarding ventilation and safety equipment. The manufacturer’s directions should be followed for the products being used.

To repaint the factory-baked enamel, the nish should be prepared by light sanding with #280 grit sand paper or #000 or #0000 ne 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 done, the more eective it will be.

After this preparation is accomplished, the factory nish should provide excellent adhesion for a variety of air-dried top coats. Enamel will give a more durable, higher gloss nish, while latex will not adhere as well and will give a dull, softer nish. Top coats involving an exothermic chemical process between two components, such as epoxies and urethanes, should be avoided.

Factory aerosol touch-up paint may require a number of light “dust coats” to isolate the factory-baked enamel nish from the quick drying touch-up paint.

Concealed Unit Enclosure

Concealed units are designed to have gypsum board or other types of wall board applied directly to the unit cabinet surface to a maximum combined thickness of 5/8-inch. The wall board may be attached with drywall screws or similar fasteners provided they penetrate the cabinet no more than 1/2 an inch. These fasteners must be located to avoid damage to internal components and wiring in the same manner as the anchoring fasteners. When applying the wall board directly to the unit cabinet, it may be necessary to shim the wall board in some areas to achieve the desired nished wall surface.

An alternate method of enclosing the unit is to frame one or more sides with studding and apply the wall board to this framing. This method requires specic unit features and return access panels when used on the return-air side of a unit. Units not properly equipped will exhibit poor cooling and/or heating performance and could experience excessive or premature component failures.

Contact the sales representative or the factory with any questions regarding unit enclosure methods.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

SECTION IV – Start-up (All Models)

Before beginning any start-up operation, the start-up personnel should familiarize themselves with the unit, options and accessories, and control sequence to under stand the proper system operation. All personnel should have a good working knowledge of general start-up procedures and have the appropriate start-up and balancing guides available for consultation.

The building must be completely nished including doors, windows, and insulation. All internal walls and doors should be in place and in the normal position. In some cases the interior decorations and furniture may inuence overall system performance. The entire building should be as complete as possible before beginning any system balancing.

The initial step in any start-up operation should be a nal visual inspection. All equipment, plenums, duct-work, and piping should be inspected to verify that all systems are complete and properly installed and mounted, and that no debris or foreign articles such as paper or drink cans are left in the units or other areas.

Each unit should be checked for loose wires, free blower wheel operation, and loose or missing access panels or doors. Except as required during start-up and balancing operations, no fan coil units should be operated without all the proper ductwork attached, supply and return grilles in place, and all access doors and panels in place and secure. A clean lter of the proper size and type must also be installed. Failure to do so could result in damage to the equipment or building and furnishings and/or void all manufacturer’s warranties.

Cooling/Heating System

Prior to the water system start-up and balancing, the chilled/ hot water systems should be ushed to clean out dirt and debris which may have collected in the piping during construction. During this procedure, the system should be ushed 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 should be installed in the piping mains to prevent this material from entering the units during normal operation.

During system lling, air venting from the unit is accomplished by the use of the standard, manual air vent tting, or the optional, automatic air vent tting installed on the coil. Venting can be accomplished by depressing the needle valve core. Automatic air vents may be unscrewed one turn counterclockwise to speed initial venting, but should be screwed in for automatic venting after start-up operations.

CAUTION: The air vent provided on the unit is

not intended to replace the main system air

vents and may not release air trapped in other parts of the system. Inspect the entire system for potential air traps and vent those areas as required, independently. In addition, some systems may require repeated venting over a period of time to properly eliminate air from the system.

Air System Balancing

All duct stubs, grilles, lters, and return-access panels must be properly installed to establish actual system operating conditions BEFORE beginning air balancing operations.

Each individual unit and the attached ductwork is a unique system with its own operating characteristics. For this reason, air balancing is normally done by balance specialists who are familiar with all procedures required to properly establish air distribution and fan-system operating conditions. These procedures should not be attempted by unqualied personnel.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

Units with no ductwork have air volumes predetermined at the factory by supply grille size and normally do not require air balancing other than selecting the desired fan speed. Units furnished with optional dampers on supply grilles may require some small adjustments to “ne tune” the air delivery to each grille. Opposed blade balancing dampers are not available for all grilles on a unit with electric heat.

After proper system operation is established, the actual unit air delivery and the actual fan motor amperage draw for each unit should be recorded in a convenient place for future reference.

Control Board Adjustment.

Adjusting the Low, Medium and High potentiometer requires the use of Multi-meter capable of measuring 0~10 VDC.

CAUTION: Only trained and qualied individuals should attempt to adjust or service components on any energized electrical equipment. Failure to follow established safety rules and guidelines could result in serious injury or death.

When unit is shipped from the factory with motor control board (which has Hi, Med and Low airow settings), it is pre- programmed at the factory to “High” speed and delivers the airow and cooling/heating capacity specied at the time of order, while Medium and Low Speeds are set to defaults based on High speed. Should airow require adjustment

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 powered while adjustments are made. Line voltage

components are concealed behind a secondary cover. However, installer should still take all reasonable precautions.

Unit must be powered to perform the following procedure. Set the electrical multimeter to VDC (Volts Direct Current). Attach black negative (-) lead of meter to the terminal labeled “L2” (shown above the potentiometers). Attach the RED positive (+) lead of the meter to the terminal labeled “L1” and conrm that there is approximately 5~10 VDC present. Attach the RED positive (+) lead of the meter to the DC OUTPUTS. LOW, MED & HIGH are typically connected together.

1. Close either the LOW, MED & HIGH speed relay contacts

by applying 24 VAC to the corresponding LOW, MED or HIGH 24 VAC INPUT and COM.

2. Measure voltage at the DC OUTPUTS and adjust the

potentiometer for that speed. (VR1 LOW, VR2 MED, VR3 HIGH)

3. In order to achieve higher CFM, turn the potentiometer

Clock-Wise . NOTE: For specic voltages adjustment please contact IEC factory representative.

Potentiometer

Low, Med, High CFM adjust

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

Water Treatment

Proper water treatment is a specialized industry. IEC recommends consulting an expert in this eld to analyze the water for compliance with the water quality parameters listed below, and to specify the appropriate water treatment regimen. The expert may recommend typical additives such as rust inhibitors, scaling preventative, antimicrobial growth agents, or algae preventatives. Anti-freeze solutions may also be used to lower the freezing point.

IEC water coil tubes and headers are constructed of pure copper. Multiple brass alloys may be present in the valve package, depending on unit conguration. It is the user’s responsibility to ensure the tube and piping materials furnished by IEC, are compatible with the treated water.

Failure to provide proper water quality may aect the fan coil unit’s warranty.

Water Containing Required Concentration

Sulphate Less than 200 ppm

pH 7.0 – 8.5

Chlorides Less than 200 ppm

Nitrate Less than 100 ppm

Iron Less than 4.5 mg/l

Ammonia Less than 2.0 mg/l

Manganese Less than 0.1 mg/l

Dissolved Solids Less than 1000 mg/l

CaCO3 Hardness 300 - 500 ppm

CaCO3 Alkalinity 300 - 500 ppm

Particulate Quantity Less than 10 ppm

Particulate Size 800 micron max

Water System Balancing

A complete knowledge of the hydronic system, along with its components and controls, is essential to proper water system balancing. This procedure should not be attempted by unqualied personnel. The system must be complete, and all components must be in operating condition BEFORE beginning water system balancing operations.

Each hydronic system has dierent operating characteristics depending on the devices and controls used in the system.

The actual balancing technique may vary from one system to

another.

After the proper system operation is established, the

appropriate system operating conditions such as various

water temperatures and ow 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 balanced, these conditions will not exist

on properly designed systems.

Controls Operation

Before proper control operation can be veried, all other

systems must be operating properly. The correct water and

air temperatures must be present for the control function

being tested. Some controls and features are designed to

not operate under certain conditions. For example, on a

two-pipe cooling/heating system with auxiliary electric heat,

the electric heater cannot be energized with hot water in the

system.

A wide range of controls, electrical options and accessories

may be used with the equipment covered in this

manual. Consult the approved unit submittals, order

acknowledgements, and other literature for detailed

information regarding each individual unit and its controls.

Since controls and features may vary from one unit to

another, care should be taken to identify the controls used

on each unit and their proper control sequence. Information

provided by component manufacturers regarding

installation, operation, and maintenance of their individual

controls is available upon request.

When changing from one mode to another (cooling to

heating or heating to cooling), it may take some time to

actually notice a change in the leaving air temperature.

In addition, some units may be designed for a very low

air temperature rise in heating. Before declaring a unit

inoperative or a component defective, it may be necessary to

verify operation by more than one method.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

SECTION V – Routine Maintenance (All Models)

Each unit on a job will have its own unique operating environment and conditions which may dictate a maintenance schedule that diers from other units on a job. A formal schedule of regular maintenance and an individual unit log should be established and maintained. This will help to achieve the maximum performance and service life of each unit on the job.

Information regarding safety precautions contained in the preface at the beginning of this manual should be followed during any service and maintenance operations.

For more detailed information concerning service operations consult your sales representative or the factory.

Motor/Blower Assembly

The type of fan operation is determined by the control components and their method of wiring. This may vary from unit to unit. Refer to the wiring diagram that is attached to each unit for that unit’s individual operating characteristics.

All motors have permanently lubricated bearings. No eld lubrication is required.

Should the assembly require more extensive service, the motor/blower assembly may be removed from the unit to facilitate such operations as motor or blower wheel/housing replacement, etc.

Dirt and dust should not be allowed to accumulate on the blower wheel or housing. This can result in an unbalanced blower wheel condition which can damage a blower wheel or motor. The wheel and housing may be cleaned periodically using a vacuum cleaner and a brush taking care not to dislodge the factory balancing weights on the blower wheel blades.

Coil

Coils may be cleaned by removing the lter and brushing the entering air face between ns with a sti brush. Care should be taken to not damage coil ns. Brushing should be

followed by cleaning with a vacuum cleaner. If a compressed air source is available, the coil may also be cleaned by blowing air through the coil ns from the leaving air face. This should again be followed by vacuuming. Units provided with the proper type of air lters, replaced regularly, will require less frequent coil cleaning.

Electric Resistance Heater Assembly

Electric resistance heaters typically require no normal periodic maintenance when unit air lters are changed properly. The operation and service life may be aected by other conditions and equipment in the system. The two most important operating conditions for an electric heater are proper air ow and proper supply voltage. High supply voltage and/or poorly distributed or insucient air ow over the element will result in element overheating. This condition may result in the heater cycling on the high-limit thermal cutout. The high-limit thermal cutout device is a safety device only and is not intended for continuous operation. With proper unit application and operation, the high-limit thermal cutout will not operate. This device only operates when a problem exists, and ANY condition that causes high-limit cutout MUST be corrected immediately. High supply voltage also causes excessive amperage draw and may trip the circuit breaker or blow the fuses on the incoming power supply.

After proper air ow and supply power are assured, regular lter maintenance is important to provide clean air over the heater. Dirt that is allowed to deposit on the heating element will cause hot spots and eventual element burn through. These hot spots will normally not be enough to trip the highlimit thermal cutout device and may not be evident until actual heater element failure.

Electrical Wiring and Controls

The electrical operation of each unit is determined by the components and wiring of the unit. This may vary from unit to unit. Consult the wiring diagram attached to the unit for the actual type and number of controls provided on each unit.

The integrity of all electrical connections should be veried at least twice during the rst year of operation.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

Afterwards, all controls should be inspected regularly for proper operation. Some components may experience erratic operation or failure due to age. Wall thermostats may also become clogged with dust and lint and should be periodically inspected and cleaned to provide reliable operation.

When replacing any components such as fuses, contractors, or relays, use only the exact type, size and voltage component as furnished from the factory. Any deviation without factory authorization could result in personal injury or damage to the unit. This will also void all factory warranties. All repair work should be done in such a manner as to maintain the equipment in compliance with governing codes, ordinances and testing agency listings.

More specic information regarding the use and operating characteristics of the standard controls oered by the manufacturer are contained in other manuals.

Valves and Piping

No formal maintenance is required on the valve-package components most commonly used with fan coil units other than a visual inspection for possible leaks in the course of other normal periodic maintenance. In the event that a valve should need replacement, the same precautions taken during the initial installation to protect the valve package from excessive heat should also be used during replacement.

Filters, Throwaway

The type of throwaway lter most commonly used on fan coil units should be replaced on a regular basis. The time interval between each replacement should be established based on regular inspection of the lter and should be recorded in the log for each unit. Refer to the product catalog for the recommended lter size for each product type and size. If the replacement lters are not purchased from the factory, the lters used should be the same type and size as those furnished from or recommended by the factory. Pleated media or extended surface lters should not be used since the high air pressure drops encountered.

with these types of lters are not compatible with the type

of fan coil unit covered in this manual. Consult the factory for

applications using lter types other than the factory standard

or optional product.

Filters, Permanent

A maintenance schedule for permanent lters should be

developed in the same manner as throwaway lters. Unlike

throwaway lters, permanent lters may be cleaned and

re-installed in the unit instead of being discarded when dirty.

The optional factory permanent lter may be cleaned in hot

soapy water to remove any trapped dirt. It should then be set

aside on edge to dry.

Before replacing the lter in the unit, it should be recharged

with some type of entrapment lm such as “Film-Cor

Recharging Oil.” The lter should be sprayed on both sides

or submerged in the lm to assure complete coverage. The

lter should not be allowed to soak in the lm, but should

be immediately removed and the excess lm drained from

the lter before re-installation in the unit. Consult a local

lter supplier for types of available cleaning solutions and

charging lms.

It should be noted that permanent lters normally have less

static pressure loss than throwaway lters.

Drain

The drain should be checked before initial start-up and at the

beginning of each cooling season to assure that the drain

trap and riser are clear. If it is clogged, steps should be taken

to clear the debris so that condensate will ow easily.

Periodic checks of the drain should be made during the

cooling season to maintain a free-owing condensate.

Should the growth of algae and/or bacteria be a concern,

consult an air conditioning and refrigeration supply

organization familiar with local conditions for chemicals or

other solutions available to control these agents.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

Replacement Parts

Factory replacement parts should be used wherever possible to maintain unit performance, its normal operating characteristics, and the testing agency listings. Replacement parts may be purchased through a local sales representative.

Should replacement parts not be purchased from the factory, use only parts duplicating the exact type, size, voltage, and other operating characteristics of the original part.

Contact the local sales representative or the factory before attempting any unit modications. Any modications not authorized by the factory could result in personal injury, damage to the unit, and could void all factory warranties.

When ordering parts, the following information must be supplied to ensure proper part identication:

(1) Complete unit model number (2) Unit serial 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 returned to the factory must be marked with a Return Authorization Number which is provided by the factory.

All equipment and components sold through the Parts Department are warranted under the same conditions as the standard manufacturer’s warranty with the exception that the warranty period is twelve (12) months unless the component is furnished as a warranty replacement. Parts furnished as warranty replacements are warranted for the remaining term of the original unit warranty, or not less than thirty (30) days.

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

SECTION VI – Checklists

Receiving and Inspection

 Unit received undamaged  Unit received complete as ordered  “Furnish only” parts accounted for  Unit arrangement/hand correct  Unit structural support complete and correct

Handling and Installation

 Mounting grommets/isolators used  Unit mounted level and square  Proper access provided for unit and accessories  Proper electrical service provided  Proper overcurrent protection provided  Proper service switch/disconnect provided  Proper chilled water line size to unit  Proper hot water line size to unit  All services to unit in code compliance  All shipping screws and braces removed  Unit protected from dirt and foreign matter

Cooling/Heating Connections

 Protect valve package components from heat  Connect eld piping to unit  Pressure test all piping for leaks  Install drain line and traps, as required  Insulate all piping, as required  Connect risers from MM models to MS models  Connect risers to unit coil valve package (If risers are shipped/installed separately)

Ductwork Connections

 Install ductwork, ttings 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 inspection  Check for proper fan rotation  Record electrical supply voltage  Check all wiring for secure connections  Close all unit isolation valves  Flush water systems  Fill systems with water/refrigerant  Vent water systems, as required  All ductwork and grilles in place  All unit panels and lters in place  Start fans, pumps, chillers, etc.  Check for overload conditions of all units  Check all ductwork and units for air leaks  Balance water systems, as required  Balance air systems, as required  Record all nal settings for future use  Check piping and ductwall for vibration  Check all dampers for proper operation  Verify proper cooling operation  Verify proper heating operation  Reinstall all covers and access panels  Verify proper condensate drainage

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

Forms\IEC\Standard Forms\Word Files\IEC Terms and Conditions 1-Page 09-10.doc

TERMS AND CONDITIONS

1. Orders shall not be binding upon International Environmental Corporation, an Oklahoma corporation (hereinafter referred to as “IEC”) unless accepted by an authorized representative of IEC at its office in Oklahoma City, Oklahoma. No distributor, sales representative or any other person or entity (except authorized e mployees of IEC at its office in Oklahoma City, Oklahoma) has any authority whatsoever to bind IEC to any representation or agreement of any kind.

2. IEC does not build items to plans and specifications. IEC agrees to furnish only the items as described in IE C’s acknowledgment unless IEC’s office in Oklahoma City, Oklahoma has previously received and accepted, in writing, approved submittals from Purchas

er.

3. Prices acknowledged are firm only if Purchaser releases the goods covered by this order for immediate production by IEC within sixty (60) days from the date of Purchaser’s initial offer to purchase and for shipment by IEC within IEC’s estimated shipping date, unless otherwise agreed to in writing by IEC at its office in Oklahoma City, Oklahoma. If Purchaser does not meet the terms and conditions of this paragraph, the prices are subject to escalation to those prices in effect at time of shipment without notice to Purchaser.

4. All prices are F.O.B. IEC’s factory, unless otherwise agreed by IEC in writing; and, all payments and prices shall be in U.S.A. dollars.

5. If goods are released for production but IEC is prevented by the Purchaser from shipping upon completion or by IEC’s estimated shipping date, whichever is later, IEC may at its option, in addition to all other remedies, invoice Purchaser to be payable within thirty (30) days and store the goods at Purchaser’s sole expense.

6. Title to and risk of loss to the goods passes to the Purchaser F.O.B. IEC’s factory.

7. Disclaimer

It is expressly understood that unless a statement is specifically identified as a warranty,

statements made b y IEC or its representatives relating to IEC’s products, whether oral, written or contained in any sales literature, catalog or any other agreement, are not express warranties and do not form a part of the basis of the bargain, but are merely IEC’s opinion or co mmendation of IEC’s products. EXCEPT AS SPECIFICALLY SET FORTH HEREIN, THERE IS NO

EXPRESS WARRANTY AS TO ANY OF IEC’S PRODUCTS. IEC

MAKES NO WARRANTY AGAINST LATENT DEFECTS. IEC MAKES NO WARRANTY OF MERCHANTABILITY OF THE GOODS OR OF THE FITNESS OF THE GOODS FOR ANY PARTICULAR PURPOSE.

8. Grant of Limited Express Warranty IEC warrants IEC products purchased and retained in the United States of America and Canada to

be free from defects in material and workmanship under normal use and maintenance as follows: (1) All complete fan coil units built or sold by IEC for twelve (12) months from date of unit start up or eighteen (18) months from date of shipment (from factory), whichever comes first.

All parts must be returned to IEC’s factory in Oklahoma City, Oklahoma, freight prepaid, no later

than sixty (60) days after the date of the failure of the part; if IEC

determines the part to be defective and within IEC’s Limited Express Warranty, IEC shall, w hen such part has been either replaced or repaired, return such to a factory recognized contractor or service organization, F.O.B. IEC’s factory, Ok lahoma City, Oklahoma, freight prepaid. The warranty on any parts repaired or replaced under warranty expires at the end of the original warranty period. For information and warranty service contact:

International Environmental Corporation Customer Service 5000 West I-40 Oklahoma City, OK 73128 (405) 605-5000

This warranty does not cover and does not apply to: (1) Air filters, fuses, fluids; (2) Products

relocated after initial installation; (3) Any port ion or component of any system that is not supplied by IEC, regardless of the cause of the failure of such portion or component; (4) Products on

which the unit identification tags or labels have been removed or defaced; (5) Products on which payment to IEC is or has been in default; (6) Products which have defects or damage which result from improper installation, wiring, electrical imbalance characteristics or maintenance; or are caused by accident, misuse or abuse, fire, flood, alteration or misapplication of the product; (7) Products which have defects or damage which result from a contaminated or corrosive air or liquid supply or operation at abnormal temperatures; (8) Mold, fungus or bacteria damages; (9) Products sub jected to corrosion or abrasion; (10) Products manufactured or supplied by others; (11) Products which ha ve been subjected to misuse, negligence or accidents; (12) Products which have been operated in a manner contrary to IEC’s printed in

structions; or (13) Products which have def ects, damage or insufficient performance as a result of insufficient or incorrect system design or the improper application of IEC’s products.

IEC is not responsible for: (1) The cost of any fluids or other system components, or associated

labor to repair or replace the same, which is incurred as a result of a defective part covered by IEC’s Limited Express Warrant y; (2) The costs of labor, materials or service incurred in removal of the defective part, or in obtaining and replacing the new or repaired part; or, (3) Transportation costs of the defective part from the installation site to IEC or of the return of any part not covered by IEC’s Limited Express Warranty.

Limitation:

This Limited Express Warranty is given in lieu of all other warranties. If, notwithstanding the dis claimers contained herein, it is determined that other warranties exist, any such warranties, including without limitation any express warranties or any implied warranties of fitness for particular purpose and merchantability, shall be limited to the duration of the Limited Express Warranty.

9. Limitation of Remedies In the 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 f ailure and a reasonable number of attempts by IEC to correct the defect, malfunction or other failure and the remed y fails of its essential purpose, IEC shall refund the purchase price paid to IEC in exchange for the return of the sold good(s). Said refund shall be the maximum liability of IEC. THIS REMEDY IS THE SOLE AND EXCL USIVE

REMEDY OF THE BUYER OR THEIR PURCHASER AGAINST IEC FOR BREACH OF CONTRACT, FOR B REACH OF ANY WARRANTY OR FOR IEC’S NEGLIGENCE OR IN STRICT LIABILITY.

10. Limitation of Liabilit y IEC shall have no liability for any damages if IEC’s performance is delayed for an y reason or is

prevented to any extent by any event such as, but not limited to: any war, civil unrest, government restrictions or restraints, strikes, or work stoppages, fire, f lood, accident, shortages of transportation, fuel, material or labor, acts of God or an y other reason beyond the sole control of IEC. IEC EXPRESSLY DISCLAIMS AND EXCLUDES ANY LIABILITY FOR

CONSEQUENTIAL OR INCIDENTAL DAMAGE IN CONTRACT, FOR BREACH OF ANY EXPRESS OR IMPLIED WARR

ANTY, OR IN TORT, WHETHER FOR IEC’s

NEGLIGENCE OR AS STRICT LIABILITY.

11. IEC shall have no system design, application or maintenance responsibility or responsibil ity for mold, fungus or bacteria to Purchaser or any other third party.

12. All sales, goods and services, use, excise, value added, transportation, privilege, occupational consumption, storage, document, transaction or other taxes which ma y be levied by any taxing authority as a result of this transaction shall be paid by the Purchaser.

13. Unless otherw ise agreed to in writing by IEC any technical data furnished in conjunction with this order and not obtainable from another source shall not be duplicate d, used, or disclosed in whole or in part for any purpose other than to evaluate this order.

14. IEC shall have no liability or other obligation hereunder, if IEC’s performance is del

ayed for any reason or is prevented to any extent by any event such as, but not limited to: any act of God, strike or work stoppage, fire, flood, accident, alloc ation, or other controls of Government authorities, shortages of transportation, fuel, material or labor, or any other cause beyond IEC’s sole control. Any shipping d ate stated by IEC is IEC’s best estimate but IEC makes no guarantee of shipment by any such date and shall have no liability or other obligation for failure to ship on such date, regardless of cause.

15. Payment terms are net thirty (30) days from date of shipment on approved credit. One and one half percent (1 1/2%) per month (18% annual rate) may be charged on past due accounts or

the highest rate permitted by applicable law, whichever is lesser. In the event the account is placed for collection, Purchaser shall be responsible for all reasonable attorneys fees or costs on a solicitor and client basis, plus all other costs and expenses incurred by IEC in securing payment.

16. Purchaser shall not cancel the contract without prior written consent of an authorized representative of IEC at its offices in Oklahoma City, Oklahoma. In the event Purchaser cancels the contract with the prior written consent of IEC after the Purchaser’s offer to purchase is received and acknowledged in writing, IEC shall be entitled to receive from Purchaser IEC ’s cost incurred to time of cancellation plus a reasonable allowance for overhead and profit.

17. Purchaser shall not assign any of its interest or rights under this agreement without written consent of IEC.

18. IEC will protect all its lien rights. IEC will not furnish lien waivers or releases

until IEC receives payment, in full, at its office in Oklahoma City, Oklahoma from Purchaser for the goods covered by this order. There is no authorized retainage for any reason.

19. This Agreement shall be construed, and the rights and liabilities of the parties hereunder shall be determined in accordance with the laws of the State of Oklahoma. If it shall be found that any portion of this agreement violates any particular law of the United St ates or any state in the United States having jurisdict ion or, if applicable, an y law of Canada or any province or territory in Canada having jurisdiction, such portion of the agreement shall be of no force and effect in that political unit, division or sub-division in which they are illegal or unenforceable and the agreement shall

be treated as if such portion or portions had not been inserted. In the event that any dispute or disagreement in connection with any order should arise or exist between Purchaser and IEC, jurisdiction and venue for any legal action shall be, if IEC so elects, exclusively in the state or federal courts in Oklahoma County, Oklahoma. The statute of limitations on any claim of the Purchaser against the IEC shall be one (1) year from the date the cause of action accrues.

20. Without regard to any other agreement, all obligations of Purchaser to IEC shall become immediately due and payable if Purchaser becomes insolvent or if Purchaser does not make payments when due or breaches any other agreement or fails to perform any obligation.

21. All orders are expressly limited and made conditional upon accepta nce b

y Purchaser of the terms and conditions set forth above without change. There shall be no understandings, agreements, or obligations (outside these ter ms and conditions) unless specifically set forth in writing and accepted by signature of an authorized representative of IEC in Oklahoma City, Oklahoma.

22. The parties hereto have requested that these presents and all judicia l proceedings relating thereto be drafted in English. Les parties aux présentes ont demandé à ce que les présentes et toutes procedures judiciaires y afférentes soient rédigées en anglais

Modular Hi-Rise Series Fan Coils

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

This page was intentionally left blank.

Contact your local IEC Sales Representative for further details and pricing applicable to this product. Visit our website (iec-okc.com) to nd your local IEC Sales Rep.

IEC Catalog Part #: I100-90001407

IOM-051 Revision 9 (2/2018)

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)

IEC Modular Hi-Rise, MPY, MXY, MAY, MBY Ditto Installation, Operation & Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual