Greenheck VFCD Installation, Operation And Maintenance Manual

Page 1

Report any damaged equipment to the

shipper immediately!

All units are shipped on a skid or packaged to minimize damage during shipment. The transporting carrier has the responsibility for delivering all items in their original condition as received from Greenheck. The individual receiving the equipment is responsible for inspecting the unit for obvious or hidden damage, recording any damage on the bill of lading before acceptance and filing a claim (if required) with the final carrier. Some accessory items are stored inside the unit during shipping. Care must be taken during installation to prevent damage to units.

**WARNING**

Disconnect and secure all electrical power to the “OFF” position prior to inspection or servicing. Failure to comply with this safety precaution could result in serious injury or death.

Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. Read the installation, operating, and maintenance instructions thoroughly before installing or

servicing this equipment.

READ AND SAVE THESE INSTRUCTIONS

Installation, Operation and Maintenance Manual

Model VFCD

Vertical Fan Coil

PN 468361

Table of Contents

Unit Layout & Table of Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Lifting & Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Model Dimensions, Weight & Filter Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Hot Water & Steam Coil Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Chilled Water & DX Coil Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Airflow Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Speed Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 7

Airflow Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Hot Water, Chilled Water & DX Coil Start-Up Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Steam Coil Start-Up Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Fan Maintenance Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Coil Maintenance Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Maintenance Documentation & Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Page 2

Lifting Instructions

Greenheck's Vertical Fan Coil (VFCD) can be moved a round a job site on a wheeled cart or with a forklift. 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.

Mounting Instructions

The VFCD should be mounted on a field supplied base as shown in Figure 2. An optional Greenheck supplied 6 inch extended base may be used when mounting as shown in Figure 3. The VFCD is available with both

external neoprene and spring isolation options.

1. Fan Section

2. Coil Section

Chilled Water or DX Coils Hot Water or Steam Coils

3. Inlet Filter

Vertical inlet filter with

⁄4 turn fasteners

(Removed for internal viewing)

4. Side Access Panels

Right and left access to each unit (upper panel hinged open)

5. Knockout for recommended

electrical wiring penetration or disconnect switch.

Airflow

Figure 3Figure 2

Page 3

Outlet

Air Flow

Inlet

Air Flow

Height

Depth

Width

Filter

Projection

2 or 4 in.

VFCD Weight Information

VFCD Dimensional Data

VFCD Filter Information

All weights are shown in lbs. Motor weights may very depending on enclosure type and horsepower.

All dimensions are shown in inches.

Unit Size Height Width Depth

Inlet

Outlet

Width Height Width Height

600

40 24 24 18 22 7 51⁄2

800

40 24 24 18 22 7 51⁄2

1300

44 24 28 18 22 18 55⁄8

1600

44 30 28 22 22 18 55⁄8

2000

52 34 28 29 23 26 55⁄8

2400

52 34 28 29 23 26 55⁄8

3000

52 50 28 45 22 327⁄8 103⁄8

Unit Size

Fan w/ Drain Pan

Row 1 Row 2 Row 4 Row 6 Row 8

Row102 in. Vertical

Filter

4 in. Vertical

Filter

Fan Motor Total

600

235 60 295 38 51 77 106 135 - 8 13

800

240 60 300 38 51 77 106 135 - 8 13

1300

260 60 320 38 51 77 106 135 164 8 13

1600

300 60 360 51 70 110 152 195 238 11 17

2000

350 75 425 58 80 127 175 225 275 12 19

2400

360 75 435 58 80 127 175 225 275 12 19

3000

425 75 500 64 90 143 198 225 252 14 22

All dimensions are shown in inches.

Size Filter Size Qty

Face Area ft.

600

20 x 24 1 2.7

800

20 x 24 1 2.7

1300

20 x 24 1 2.7

1600

24 x 24 1 3.6

2000

16 x 25 2 4.7

2400

16 x 25 2 4.7

3000

24 x 24 2 6.7

Page 4

Hot Water

1 & 2 Row

Dimensional Data

VFCD Coil Data

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

All dimensions are in inches.

Hot Water

4 Row

Steam

1 & 2 Row

Dimensional Data

All dimensions are in inches.

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

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.

All dimensions are in inches.

0.25 Vent and Drain Supplied Right Side Connection Shown

Right Side Connection Shown

Size A B C D

600 20.00 22.50 22.63 0.875

800 20.00 22.50 22.63 0.875 1300 24.00 27.50 22.63 0.875 1600 24.75 27.25 22.63 0.875 2000 24.75 27.50 25.13 0.875 2400 24.75 27.50 25.13 0.875 3000 28.75 31.25 22.63 1.375

Size A B C D

600 20.00 22.50 22.63 0.875

800 20.00 22.50 22.63 0.875 1300 24.00 27.50 22.63 0.875 1600 24.75 27.25 22.63 0.875 2000 24.75 27.50 25.13 0.875 2400 24.75 27.50 25.13 0.875 3000 28.75 31.25 22.63 1.375

Size A B C D

600 20.00 22.50 13.20 2.0

800 20.00 22.50 13.20 2.0 1300 24.00 27.50 13.20 2.0 1600 24.75 27.25 13.20 2.0 2000 24.75 27.50 14.44 2.0 2400 24.75 27.50 14.44 2.0 3000 28.75 31.25 13.20 2.5

Airflow

3.75 in.

3.81 in.

Airflow

3.75 in.

3.38 in.

Outlet

Inlet

2 in.

1.5 in.

4 in.

Outlet

Inlet

0.75 in.

1 in.

Drain Connection

Cap

Outlet

Cap

Inlet

6.63 in.

2 in.

1.5 in.

3 in.

Outlet

Inlet

0.75 in.

1 in.

Drain Connection

Airflow

4.38 in.

Inlet

Outlet

5 in.

2 in.

1.5 in.

3 in.

Inlet

Outlet

0.75 in.

1 in.

Drain Connection

Page 5

Direct Expansion (DX)

Single Circuit

4, 6 or 8 Row (Orifice Code 18/19)

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).

Chilled Water

4, 6 or 8 Row

VFCD Coil Data

Dimensional Data

All dimensions are in inches.

Dimensional Data

0.25 Vent and Drain Supplied Right Side Connection Shown

NOTE: With airflow from left to right the fluid enters the coil from the center connection (Inlet) and exits from the bottom (Outlet). The other connections should be capped off.

Right Side Connection Shown

Size

A B

C D E F

4 Row 6 Row 8 Row 4 Row 6 Row 8 Row 600 3.38 3.29 3.21 6.63 8.71 10.79 20.00 22.50 22.63 0.875 800 3.38 3.29 3.21 6.63 8.71 10.79 20.00 22.50 22.63 0.875

1300 3.38 3.29 3.21 6.63 8.71 10.79 24.00 27.50 22.63 0.875 1600 3.38 3.29 3.21 6.63 8.71 10.79 24.75 27.25 22.63 0.875 2000 3.38 3.29 3.21 6.63 8.71 10.79 24.75 27.50 25.13 0.875 2400 3.38 3.29 3.21 6.63 8.71 10.79 24.75 27.50 25.13 0.875 3000 3.38 3.29 3.21 6.63 8.71 10.79 28.75 31.25 22.63 1.375

Size

A B

C D E

4 Row 6 Row 8 Row 4 Row 6 Row 8 Row 600 3.38 3.29 3.21 5.66 6.25 7.33 20.00 22.50 13.19 800 3.38 3.29 3.21 5.66 6.25 7.33 20.00 22.50 13.19

1300 3.38 3.29 3.21 5.66 6.25 7.33 24.00 27.50 13.19 1600 3.38 3.29 3.21 5.66 6.25 7.33 24.75 27.25 13.19 2000 3.38 3.29 3.21 5.66 6.25 7.33 24.75 27.50 14.44 2400 3.38 3.29 3.21 5.66 6.25 7.33 24.75 27.50 14.44 3000 3.38 3.29 3.21 5.66 6.25 7.33 28.75 31.25 13.19

Airflow

3.75 in.

Outlet

Cap

Inlet

2 in.

1.5 in.

3 in.

Outlet

Inlet

0.75 in.

1 in.

Drain Connection

1.625 in.

1.125 in.

Airflow

3.75 in.

Cap

Inlet

Outlet

2 in.

1.5 in.

3 in.

Cap

Inlet

Outlet

0.75 in.

1 in.

Drain Connection

Page 6

Airflow System Start-Up

For proper unit function and safety, follow everything in this start-up procedure in the order presented. This is to be done after the electrical connections are complete.

1. Check Voltage

Before starting the unit compare the supplied voltage with the units nameplate voltage and the motor voltage.

2. Check Blower Rotation

If the blower is rotating in the wrong direction, the unit will move some air but not perform properly. To check the rotation, open the blower access door and run the blower momentarily to determine the rotation.

To reverse the rotation, turn the power off and use the following procedure:

• For single phase units, rewire the motor per the instructions on the motor.

3. Check for Vibration

Check for unusual noise and vibration. Excessive vibration maybe experienced during initial startup. Left unchecked, excessive vibration can cause a multitude of problems, including structural and/or component failure. Many conditions can be discovered by careful observation. If the problem is wheel unbalance, in-place balancing can be done providing there is access to the fan wheel. Generally, fan vibration and noise is transmitted to other parts of the building by the ductwork. If noise is an issue, we

recommend using heavy canvas connections on the inlet of the fan. Refer to the “Troubleshooting” section of this manual if a problem develops.

4. Air Volume Check and Measurement

Along with the building balance, the units air volume (cfm) should be measured and compared with its rated air volume. This unit is flexible for varying air volume, but the actual air volume should be known for making final adjustments. The most accurate way to measure the air volume is by using the pitot traverse method in the ductwork away from the blower. Other methods can be used but should be proven and accurate. To adjust the air volume, change the fan rpm or the system losses. See Troubleshooting section in this guide.

5. Measure Motor Voltage, Amperage and Fan rpm

All access doors must be installed. Measure and record the input voltage and motor amperage(s).

To measure the fan rpm, the blower door will need to be removed. Minimize measurement time because the motor may over amp with the door removed.

Compare measured amps to the motor nameplate full load amps and correct if over amping. See the Troubleshooting section in this guide.

Pre-Start Check List

1. Disconnect and lock-out all power switches to fan.

2. Check all fasteners, set screws and locking collars on the fan, motor base and accessories for tightness.

3. Rotate the fan wheel by hand and assure no parts are rubbing.

Special Tools Required

• Voltage meter

• Tachometer

• Amperage meter

AIRFLOW

Speed controls may be used on Model VFCD fans for manual adjustment of the fan’s performance (for final system balancing) or to control the fan’s output in confined spaces, such as conference or meeting rooms. The fan can be adjusted to 60% of design airflow with a speed control. This reduction in airflow and fan speed is also accompanied by a reduction in noise level. Solid state speed controls are available for a range of applications up to 15 amps. Speed controls can be used to operate more than one fan if the combined total amperage of the fans does not exceed the control rating.

Model 5WSSC - For use w/ shaded pole and PSC motors.

• Rated for 115 - 127V, 5 Amp • UL Listed

• Require a 2x4 handy box

Model 5W240 - For use w/ shaded pole and PSC motors.

• Rated for 220 - 240V, 5 Amp • UL Listed

• Requires 2x4 handy box

Speed Controls

Page 7

Model 8WSSC - For use w/ shaded pole and PSC motors.

• Rated for 220 - 240V, 8 Amp • UL Listed

• Requires 2x4 handy box

Model 10WSSC - For use w/ shaded pole and PSC motors.

• Rated for 115 - 127V, 10 Amp • UL Listed

• Requires 4x4 handy box

Airflow Troubleshooting

Blower Unit

Symptom Possible Cause Solution

Blower fails Blown fuse or open circuit breaker Replace fuse or reset circuit breaker and to operate check amps

Defective motor or capacitor Replace

Motor starter overloaded Reset starter and check amps

Motor overamps CFMs too high Check CFMs

Static pressures are higher or lower If higher, ductwork should be improved than design If lower, fan RPMs should be lower

Blower rotation is incorrect Check rotation and correct

Motor voltage incorrect Check motor nameplate and supplied voltage

Motor horsepower too low See specifications and catalog for fan

curves to determine if horsepower is sufficient

Shorted windings in motor Replace motor

Insufficient airflow Mixing box damper not fully open Adjust damper linkage or replace

damper motor

System static pressure too high Improve ductwork to eliminate losses

using good duct practices

Blower speed too low Check for correct RPMs with catalog data

Mixing box dampers closed Open and adjust

Dirty or clogged filters Clean or replace

Leaks in ductwork Repair

Elbows, or other obstructions

Correct or improve ductwork

may restrict fan outlet

Too much airflow Blower fan speed too high Check for correct fan RPM

Filter(s) not in place Install filters

Insufficient static pressure (SP) Induce SP into system ductwork (airflow resistance)

Excessive noise Wheel rubbing on housing Center wheel or vibration

Loose wheel on shaft Tighten wheel setscrew

Loose motor or blower sheave Tighten sheave setscrew

Motor base or blower loose Tighten mountings bolts

Motor out of balance Replace

Wheel out of balance Replace or rebalance

Accumulation of material on wheel Clean wheel and housing

FULL VOLTAGE

BLACK

SPEED CONTROL

RED

WHITE

SWITCHED FULL VOLTAGE

Dotted line indicates

for use with 10W

switch only.

VARIABLE VOLTAGE

AUX

DEVICE

120 VAC

FAN

Page 8

Water Coils

1. Piping should be in accordance with accepted industry standards. Pipework should be supported independently of the coils. Water pipes are copper with sweet connections. USE WET TOWEL TO AVOID BURNING COIL CONNECTION GROMMETS. When installing coupling, do not apply undue stress to the connection extending through the unit. Use a back-up pipe wrench to avoid breaking the weld between coil connection and header.

2. Connect the WATER SUPPLY TO THE BOTTOM CONNECTION on the air-leaving side and the WATER RETURN TO THE TOP CONNECTION on the air-entering side. The extra bottom connection can be used for an auxiliary manual drain connection, and the extra top connection may be used for an automatic air vent or the extra connections can be capped. To insure proper venting, an external air vent in the piping is recommended. Connecting the supply and/or return in any other manner will result in very poor performance. CAP UNUSED CONNECTIONS.

3. The air vent at the uppermost point should be temporarily opened during system start-up to release all of the air from the coil. To maintain heat transfer capacity, periodically vent any air in coil. Vent is to be located behind connections side access door.

4. Water coils are not normally recommended for use with entering air temperatures below 40ºF. No control system can be depended on to be 100% safe against freeze-up with water coils. Glycol solutions or brines are the only safe media for operation of water coils with low entering air conditions.

CONTINUOUS WATER CIRCULATION THROUGH THE COIL AT ALL TIMES IS HIGHLY RECOMMENDED.

5. Pipe sizes for the system must be selected on the basis of the head (pressure) available from the circulation pump. Piping should be in accordance with accepted industry standards.

6. For chilled water coils, the condensate drain pipe should be sized adequately to ensure the condensate drains properly. See DRAIN PAN TRAPS and Figure 4.

Direct Expansion (DX) Coils

1. Piping should be in accordance with accepted industry standards. Pipework should be supported independently of the coils. Undue stress should not be applied at the connection to coil headers.

2. The condensate drain pipe should be sized adequately to ensure the condensate drains properly. See DRAIN PAN TRAPS and Figure 4.

3. When connecting suction and liquid connections make sure the coil is free from all foreign material. Make

sure all joints are tight and free of leakage.

4. Dual circuits are recommended to be run by two compressors. One compressor with the appropriate valves and piping can be used but is not recommended. Greenheck does not supply compressor or condensing units, for further instruction on DX coil installation and operation contact your compressor and/or condenser manufacturer.

DXI coils have dual connections and should be used with two compressors.

Drain Pan Traps

Drain lines and traps should be run full size from the drain pan connection. Drain pans should have drain lines and traps to permit the condensate from the coils to drain freely. On all units with drain pans, the trap depth and the distance between the trap outlet and the drain pan outlet should be twice the static pressure in the drain pan section under normal operation to assure the trap remains sealed.

Figure 4 - Drain Pan Trap

Hot Water, Chilled Water & DX Coils

2P = min.

Page 9

Steam Coils

Application Recommendations:

Satisfactory operation and service life are best ensured when coils are installed with proper piping, trap, and support arrangement. The following notes and Figure 5 are recommended for the coil unit installation and operation.

General:

1. Provide separate supports and hangers for the unit and the piping.

2. Be certain that adequate piping flexibility is provided. Stresses resulting from expansion of closely coupled piping and coil arrangement can cause serious damage.

3. Standard steam coils are pitched in the casings when installed for horizontal air flow. The casing must BE LEVEL after the unit is installed for proper condensate drainage. If condensate is not removed the coil will suffer from water hammering and will have a shortened life. On vertical air flow applications, the coils must be pitched when installed.

4. Do not reduce pipe size at the coil return connection. Carry return connection size through the dirt pocket, making the reduction at the branch leading to the trap.

5. It is recommended that vacuum breakers be installed on all applications to prevent retaining condensate in the coil. Generally, the vacuum breaker is to be connected between the coil inlet and the return main. The vacuum breaker should be open to the atmosphere and the trap design should allow venting of large quantities of air.

6. Do not attempt to lift condensate when using modulating or on-off control.

7. Do not reduce the pipe size leaving the coil.

Traps:

1. Size traps in accordance with the manufacturer’s recommendations. Be certain that the required pressure differential will always be available. DO NOT UNDERSIZE.

2. Float and thermostatic or bucket traps are recommended for low pressure steam. On high pressure systems, bucket traps are normally recommended. The thermostatic traps should be used only for air venting.

3. Bucket traps are recommended for use with on-off control only.

4. Locate traps at least 12 inches below the coil return connection.

Controls:

1. On high pressure installations, a two-position steam valve with a face and bypass arrangement is preferred where modulating control is required.

2. Modulating valves must be size properly. DO NOT UNDERSIZE.

Freezing Conditions (Entering air below 35ºF):

1. 5 PSI steam must be supplied to the coil at all times.

2. Modulating valves are not recommended. Control should be by means of face and bypass dampers.

3. Provision should always be made to thoroughly mix fresh air and return air before it enters the coil on return air units. Also, temperature control elements must be properly located to obtain true air mixture temperatures.

4. As additional protection against freezeup, the trap should be installed sufficiently far below the coil to provide an adequate hydrostatic head to ensure removal of condensate during an interruption in the steam pressure. Estimate 3 feet for each 1 PSI of trap differential required.

5. On start up, admit steam to coil ten minutes before admitting outdoor air.

6. Provision must be made to close fresh air dampers if steam supply pressure falls below minimum specified.

Figure 5

Recommended Steam Coil Piping

Steam Main

Return Main

Gate Valve

Control Valve, Modulating

Two-Position

Check Valve-Vacuum Breake

Float and Thermostat Trap

Strainer

Page 10

Fan Maintenance

Greenheck recommends these procedures to insure trouble free operation of this unit. It is especially important to maintain heater units for clean and efficient operation. Most unit failures can be attributed to poor setup or poor maintenance.

A record of maintenance performed on this unit should be kept. This information will provide essential information if problems are encountered. A section at the back of this manual is provided for recording the unit's maintenance history.

CAUTION: When performing any maintenance on this unit be sure that the power is disconnected and cannot be accidentally turned on. The control center disconnect can be locked in the off position.

Pre-Starting Checks

Check all fasteners for tightness. The wheel should rotatefreely and be aligned. Wheel position is preset at the factory, however, movemenet may occure durig shipment and realignment may be necessary. Centering may be accomplished by loosening hte set screw in the wheel and moving the wheel to desired position.

Every 3 Months

The filter in the unit should be inspected at least every 3 months. Depending on the environment filters could require changing or cleaning more or less often. The filters can be slid out of either side of the unit.

If washable filters are installed, they can be washed in warm soapy water. An adhesive spray can be applied to increase filter efficiency.

If disposable filters are installed, check by holding up to a light source. If light cannot pass through the filter, it should be replaced. Replacement filters should be of the same manufacturer and size. When reinstalling filters, be sure to install with the airflow in the correct direction indicated on the filter.

Motor maintenance is generally limited to cleaning and lubrication (where applicable). Cleaning should be limited to the exterior surfaces only. Removing dust and grease build-up on motor housing assures proper motor cooling. Greasing of motors is intended only when grease fittings are provided. Many fractional motors are permanently lubricated and require no further lubrication. Motors supplied with grease fittings should be greased in accordance with manufacturer's recommendations. When motor temperature does not exceed 104°F (40°C), the grease should be replaced after 2000 hours of running time as a general rule.

Wheels require very little attention when moving clean air. Occasionally oil and dust may accumulate on the wheel causing imbalance. When this occurs the wheel and housing should be cleaned to assure smooth and safe operation. Inspect fan impeller and housing for fatigue, corrosion or wear

Routinely check all fasteners, set screws and locking collars on the fan, motor base and accessories for tightness.

Page 11

Coil Maintenance

1. Coils must be clean to obtain maximum performance. Check once a year under normal operating conditions and, if dirty, brush or vacuum clean. Soiled fins reduce the capacity of the coil, demand more energy from the fan, and create an environment for odor and bacteria to grow and spread through the conditioned zone. High pressure water (400 psi or less) may be used to clean coils with fin thickness over 0.006 inches thick. TEST THE SPRAY PRESSURE over a small corner of the coil to determine if the fins will withstand the spray pressure.

For coils with fragile fins or high fin density, foaming chemical sprays and washes are available. Many coil cleaners contain harsh chemicals, so they must be used with caution by qualified personnel only. Care must be taken not to damage the coils, including fins, while cleaning. CAUTION: Fin edges are sharp.

2. Drain pans in any air conditioning unit will have some moisture in them, therefore, algae and other organisms will grow due to airborne spores and bacteria. Periodic cleaning is necessary to prevent this build-up from plugging the drain and causing the drain pan to overflow. Inspect twice a year to avoid the possibility of overflow. Also, drain pans should be kept clean to prevent the spread of disease. Cleaning should be performed by qualified personnel.

Winterizing Coils

Coil freeze-up can be caused by such things as air stratification and failure of outdoor air dampers and/or preheat coils. Routine draining of water cooling coils for winter shutdown cannot be depended upon as insurance against freeze-up. Severe coil damage may result. It is recommended that all coils be drained as thoroughly as possible and then treated in the following manner.

Fill each coil independently with an antifreeze solution using a small circulating pump and again thoroughly drain. Check freezing point of antifreeze before proceeding to next coil. Due to a small amount of water always remaining in each coil, there will be diluting effect. The small amount of antifreeze solution remaining in the coil must always be concentrated enough to prevent freeze-up.

NOTE: Carefully read instructions for mixing antifreeze solution used. Some products will have a higher freezing point in their natural state than when mixed with water.

Page 12

This manual is the property of the owner, and is required for future maintenance.

Please leave it with the owner when you complete the job.

Warranty

Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from the purchase date. Any units or parts which prove defective during the warranty period will be replaced at our option when returned to our factory, transportation prepaid. Motors are warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck prove defective during this period, they should be returned to the nearest authorized motor service station. Coils are warranted by the coil manufacture for a period of one year. Greenheck will not be responsible for any removal or installation costs.

As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications

without notice.

Model VFCD IOM

#468361 Rev 1 September 2005

Job Information

Job Name:________________________________________

Address:__________________________________________

City: ________________ State: ________ Zip: __________

Phone: __________________ Fax: ____________________

Contact Person:___________________________________

Service Organization: _____________________________

Address:_________________________________________

City: ________________ State: ________ Zip: _________

Phone: __________________ Fax: ___________________

Work Done By: ___________________________________

Name Plate Information

Model: ___________________________________________

Volts: ___________ Hertz: __________ Phase: _________

Amps: __________________ Mark: ___________________

Serial Number: ____________________________________

Motor Voltage:

Motor Amperage:

Fan rpm:

Maintenance Documentation

Field Start-Up Documentation

Actual Voltage:

Hertz: Phase:

Actual Amperage:

Blower Rotation  Correct

Air Volume Design

cfm

Actual cfm

Maintenance

Date Time Notes:

GREENHEC

P.O. BOX 410 SCHOFIELD, WISCONSIN 54476-0410

PH. 715-359-6171

www.greenheck.com