Greenheck LFC Installation Manual

Document 464496

Model LFC

Low-Proﬁle Fan Coil

Installation, Operation and Maintenance Manual

Please read and save these instructions for future reference. Read carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or property damage!

General Safety Information

Only qualiﬁed personnel should install this unit. Personnel should have a clear understanding of these instructions and should be aware of general safety precautions. Improper installation can result in electric shock, possible injury due to coming in contact with moving parts, as well as other potential hazards. Other considerations may be required if high winds or seismic activity are present. If more information is needed, contact a licensed professional engineer before moving forward.

1. Follow all local electrical and safety codes, as well as the National Electrical Code (NEC), the National Fire Protection Agency (NFPA), where applicable. Follow the Canadian Electric Code (CEC) in Canada.

2. The rotation of the wheel is critical. It must be free to rotate without striking or rubbing any stationary objects.

3. Motor must be securely and adequately grounded.

4. Do not spin fan wheel faster than the maximum cataloged fan rpm. Adjustments to fan speed signiﬁcantly affects motor load. If the fan RPM is changed, the motor current should be checked to make sure it is not exceeding the motor nameplate amps.

5. Do not allow the power cable to kink or come in contact with oil, grease, hot surfaces, or chemicals. Replace cord immediately if damaged.

6. Verify that the power source is compatible with the equipment.

7. Never open blower access doors while the fan is running.

DANGER

Always disconnect power before working on or near a unit. Lock and tag the disconnect switch or breaker to prevent accidental power up.

CAUTION

When servicing the unit, motor may be hot enough to cause pain or injury. Allow motor to cool before servicing.

Low-Profile Fan Coil

Receiving

Upon receiving the product, check to ensure all items are accounted for by referencing the delivery receipt or packing list. Inspect each crate or carton for shipping damage before accepting delivery. Alert the carrier of any damage detected. The customer will make a notation of damage (or shortage of items) on the delivery receipt and all copies of the bill of lading which is countersigned by the delivering carrier. If damaged, immediately contact your manufacturer’s representative. Any physical damage to the unit after acceptance is not the responsibility of manufacturer.

Unpacking

Verify that all required parts and the correct quantity of each item have been received. If any items are missing, report shortages to your local representative to arrange for obtaining missing parts. Sometimes it is not possible that all items for the unit be shipped together due to availability of transportation and truck space. Conﬁrmation of shipment(s) must be limited to only items on the bill of lading.

Handling

Units are to be rigged and moved by the lifting brackets provided or by the skid when a forklift is used. Location of brackets varies by model and size. Handle in such a manner as to keep from scratching or chipping the coating. Damaged ﬁnish may reduce ability of unit to resist corrosion.

Storage

Units are protected against damage during shipment. If the unit cannot be installed and operated immediately, precautions need to be taken to prevent deterioration of the unit during storage. The user assumes responsibility of the unit and accessories while in storage. The manufacturer will not be responsible for damage during storage. These suggestions are provided solely as a convenience to the user.

INDOOR — The ideal environment for the storage of

units and accessories is indoors, above grade, in a low humidity atmosphere which is sealed to prevent the entry of blowing dust, rain, or snow. Temperatures should be evenly maintained between 30°F (-1°C) and 110°F (43°C) (wide temperature swings may cause condensation and “sweating” of metal parts). All accessories must be stored indoors in a clean, dry atmosphere.

Remove any accumulations of dirt, water, ice, or snow and wipe dry before moving to indoor storage. To avoid “sweating” of metal parts allow cold parts to reach room temperature. To dry parts and packages use a portable electric heater to get rid of any moisture build up. Leave coverings loose to permit air circulation and to allow for periodic inspection.

The unit should be stored at least 3½ in. (89 mm) off the ﬂoor on wooden blocks covered with moisture proof paper or polyethylene sheathing. Aisles between parts and along all walls should be provided to permit air circulation and space for inspection.

Inspection and Maintenance during Storage

While in storage, inspect fans once per month. Keep a record of inspection and maintenance performed.

If moisture or dirt accumulations are found on parts, the source should be located and eliminated. At each inspection, rotate the fan wheel by hand ten to ﬁfteen revolutions to distribute lubricant on motor. Every three months, the fan motor should be energized. If paint deterioration begins, consideration should be given to touch-up or repainting. Fans with special coatings may require special techniques for touch-up or repair.

Machined parts coated with rust preventive should be restored to good condition promptly if signs of rust occur. Immediately remove the original rust preventive coating with petroleum solvent and clean with lint-free cloths. Polish any remaining rust from surface with crocus cloth or ﬁne emery paper and oil. Do not destroy the continuity of the surfaces. Wipe thoroughly clean with Tectyl

506 (Ashland Inc.) or the equivalent. For hard to reach internal surfaces or for occasional use, consider using Tectyl

511M Rust

Preventive or WD-40® or the equivalent.

REMOVING FROM STORAGE — As units are removed

from storage to be installed in their ﬁnal location, they should be protected and maintained in a similar fashion, until the equipment goes into operation.

Prior to installing the unit and system components, inspect the unit assembly to make sure it is in working order.

1. Check all fasteners, set screws on the fan, wheel, bearings, drive, motor base, and accessories for tightness.

2. Rotate the fan wheel(s) by hand and assure no parts are rubbing.

Service Clearance

Units require service clearance for:

• Filter replacement

• Coil and drain pan inspection - cleaning, and

replacement

• Motor and drive inspection - maintenance and

replacement

Access panels are provided for inspection and cleaning of unit components. Allow service clearance of 26 inches for removal of ﬁlters. Allow a service clearance equal to the unit width for removal of coils and drain pan.

2 Low-Profile Fan Coil

Table of Contents

Installation

Unit Layout ...............................3

Lifting / Hanging Instructions ................ 3

Dimensions / Weights ...................... 4

Filter Sizes / Quantity ...................... 4

Coil Dimensions .........................5-6

Start-Up

System Start-Up .......................... 7

Troubleshooting

Blower .................................. 8

Motor Overamps .......................... 8

Insufficient / Too Much Airflow ............... 8

Excessive Noise or Vibration ................ 8

Start-Up

Coil Module ............................9-10

Drain Pan / Drain Trap .................... 10

Maintenance

Fan .................................... 11

Coil .................................... 12

Drain Pan ............................... 12

Reference

Start-Up Documentation ................... 12

Optional Ladder Diagrams ...............13-14

Maintenance Log ........................ 15

Our Commitment ...................Backcover

Lifting Instructions

Unit should be lifted by the factory supplied lifting lugs or frame rails and a spreader bar (by others) to prevent damage from occurring to the equipment (see Figure

1). Avoid twisting or uneven lifting of equipment. Do not lift equipment by coil connections or headers. The unit must remain upright during lifting. All access doors and panels must be closed during lifting to avoid damage.

Spreader Bar

Frame Rails

Lifting Lugs

Figure 1

Unit Layout

Airﬂow

1. Fan Section

2. Coil Section

• Chilled Water • Hot Water

• DX Coils • Steam Coils

3. Inlet Filter Vertical inlet ﬁlter with quarter-turn fasteners

4. Lifting Lugs/Hanging Brackets Six (6) lifting lugs for each unit

5. Side Access Panels Right and left access to each unit. (Image shows panels removed).

6. 1

⁄4 inch knockout is provided for the recommended

electrical wiring penetration or disconnect switch.

Hanging Instructions

The LFC should be hung by the factory supplied lifting lugs or field supplied frame rails as shown respectively in Figures 2 and 3. All hanging brackets must be used to mount the unit. The LFC is available with both external neoprene and spring isolation options.

Figure 2

Figure 3

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Unit Dimensions

Unit Size

All dimensions are in inches.

w/o Filter w/ 2 in. Filter w/ 4 in. Filter Height Width Height Width

15 40 42 44 8.0 11.0 38 9.0 36 4.0 6.75 20 40 42 44 11.0 14.0 38 12.0 36 6.5 6.75 25 40 42 44 13.0 16.0 38 14.0 36 8.0 8.5 30 45 47 49 15.5 18.5 38 16.5 36 9.0 9.0 45 45 47 49 14.25 18.5 50 16.5 48 9.0 10.0 50 48 50 52 16.75 21.0 50 19.0 48 10.25 10.0 65 52 54 56 21.75 26.0 50 24.0 48 12.0 12.75 85 52 54 56 21.75 26.0 62 24.0 60 12.0 15.0

J K Width

Elevation ViewTop View

Inlet Outlet

Weights

Unit Size

15 128 50 178 25 31 44 60 75 5 8 20 151 50 201 32 41 61 83 105 6 10 25 175 60 235 38 51 77 106 135 8 13 30 199 60 259 45 61 94 129 165 9 15 45 250 75 325 51 70 110 152 195 11 17 50 316 75 391 58 80 127 175 225 12 19 65 405 75 480 64 90 143 198 255 14 22 85 450 100 550 71 100 160 221 285 15 24

All weights are shown in pounds (lbs.) Motor weights may vary depending on enclosure type and horsepower.

Mounting Dimensions

Unit Size

15 40 18.25 19.75 38 43 1 0.5 2.5 20 40 19 19 38 43 1 0.5 2.5 25 40 19 19 38 43 1 0.5 2.5 30 45 19 24 38 43 1 0.5 2.5 45 45 19 24 50 55 1 0.5 2.5 50 48 19 27 50 55 1 0.5 2.5 65 52 19 31 50 55 1 0.5 2.5 85 52 19 31 62 67 1 0.5 2.5

All dimensions are in inches.

Fan w/ Drain Pan

Fan Motor Total

Horizontal Hanging

ABCDEFGH

1 Row 2 Row 4 Row 6 Row 8 Row

Filter Sizes and Quantity

Size Filter Size Qty Face Area (ft 2)

15 9 x 18 2 1.8

25 14 x 18 2 3.0

45 16 x 24 2 4.8 50 18 x 24 2 5.4 65 24 x 24 2 7.2

All dimensions are in inches.

12 x 12 12 x 24

16 x 16 16 x 20

12 x 24 1 24 x 24 2

2 in. Vertical

Filter

1 2.5

1 3.4

4 in. Vertical

Filter

8.9

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Coil Dimensions

Hot Water • 1 and 2 Row

Copper Sweat

Airﬂow

1.5

Right side connection shown.

Hot Water • 4 Row

Copper Sweat

Airﬂow

1.5

Right side connection shown.

3.75

Outlet

0.75

Drain Connection

Outlet

0.75

Drain Connection

Unit Size A B

7.63 0.75

20 10.13 0.75 25 12.63 0.875 30 15.13 0.875 45 15.13 0.875 50 17.63 1.125 65 22.63 1.375 85 22.63 1.375

All dimensions are in inches.

NOTE

Fluid enters the coil from the bottom connection (Inlet) and exits from the top (Outlet).

Unit Size A B

15 7.63 0.75 20 10.13 0.75 25 12.63 0.875 30 15.13 0.875 45 15.13 0.875 50 17.63 1.375 65 22.63 1.375 85 22.63 1.375

All dimensions are in inches.

NOTE

With airflow from left to right, the fluid enters the coil from the bottom connection (Inlet) and exits from the top (Outlet). The other two coil connections should be capped off (Cap).

Steam • 1 and 2 Row

Steel MPT

Airﬂow

1.5

Right side connection shown.

Unit Size A B C

15 7.0 1.5 3.81 20 6.94 1.5 3.56

25 8.19 2.5 3.81 30 9.44 2.5 3.56 45 9.44 2.5 3.56 50 10.69 2.5 4.81

Outlet

65 13.19 2.5 3.56 85 13.19 2.5 3.56

0.75

Drain Connection

All dimensions are in inches.

NOTE

Steam enters the coil from the center connection (Inlet) and exits from the bottom (Outlet).

5Low-Profile Fan Coil

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