Goodman Mfg CPG SERIES Drive Belt Tension Adjustment, Recommended Pounds of Force PER Belt

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Three Phase Models

 

 

2) MAXIMUM VOLTAGE DEVIATIONS

3) PERCENT VOLTAGE

= 100 X

 

FROM AVERAGE VOLTAGE

 

UNBALANCE

 

 

1) AVERAGE VOLTAGE

 

 

 

HOW TO USE THE FORMULA:

EXAMPLE: With voltage of 220, 216, and 213

1)Average Voltage = 220+216+213=649 / 3 = 216

2)Maximum Voltage Deviations from Average Voltage = 220 - 216 = 4

3) Percent Voltage Unbalance = 100 x

4

=

400

= 1.8%

216

216

 

 

 

Percent voltage unbalance MUST NOT exceed 2%.

FIELD DUCT CONNECTIONS

Verify that all duct connections are tight and that there is no air bypass between supply and return.

CONTROL VOLTAGE CHECK

With disconnect switch in the open “OFF” position, discon- nect blue wire from low voltage transformer TRANS1. Close the disconnect switch to energize TRANS1 control trans- former. Check primary and secondary (24V) of control trans- former TRANS1.

THERMOSTAT PRELIMINARY CHECK

With disconnect switch open and blue wire disconnected from TRANS1 transformer, attach one lead of ohmmeter to termi- nal R on TB1 terminal block. Touch, in order, the other ohm- meter lead to terminals Y1, Y2 and G at TB1 terminal block. There must be continuity from terminal R to terminals Y and G. R to Y indicates cool. R to G indicates fan (auto). Replace blue wire on TRANS1 transformer.

FILTER SECTION CHECK

Remove filter section access panels and check that filters are properly installed. Note airflow arrows on filter frames.

BEARING CHECK

Prior to energizing any fans, check and make sure that all setscrews are tight so that bearings are properly secured to shafts.

SET EVAPORATOR FAN RPM

Actual RPM’s must be set and verified with a tachometer or strobe light. Refer to Appendices A and B for basic unit fan RPM. Refer also to “Airflow” section of this manual. With disconnect switch open, disconnect thermostat wires from terminals Y and W. This will prevent heating and mechanical cooling from coming on. Place a jumper wire across termi- nals R and G at TB1 terminal block. Close disconnect switch; evaporator fan motor will operate so RPM can be checked.

For gas heat units, the airflow must be adjusted so that the air temperature rise falls within the ranges given stated on Data Plate (see Appendix A - Blower Performance).

TENSION AND ALIGNMENT ADJUSTMENT

Correct belt tension is very important to the life of your belt. Too loose a belt will shorten its life; too tight, premature mo- tor and bearing failure will occur. Check you belt drive for adequate “run-in” belt tension by measuring the force required to deflect the belt at the midpoint of the span length. Belt tension force can be measured using a belt tension gauge, available through most belt drive manufacturers.

t = Span length, inches

C = Center distance, inches

D = Larger sheave diameter, inches d = Smaller sheave diameter, inches

h = Deflection height, inches

DRIVE BELT TENSION ADJUSTMENT

 

TYPE

SHEAVE

DEFLECTION

DEFLECTION

MODEL

FORCE (lbs)

 

 

DIAMETER

 

 

 

 

(in)

 

 

 

(in)

 

 

 

 

 

 

 

 

 

BELT

DRIVE

 

Used

New

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7.5 Ton

 

 

2.6 to 3.6

4.5 ± .5

5.5 ± .5

1/4 ± 1/16

 

 

 

 

 

 

 

8.5

 

 

2.6 to 3.6

4.5 ± .5

5.5 ± .5

1/4 ± 1/16

 

A, AX

Standard

 

 

 

 

10 Ton

3.0 to 4.0

4.5 ± .5

5.5 ± .5

1/4 ± 1/16

 

 

 

 

 

 

 

12.5 Ton

 

 

2.6 to 3.6

4.5 ± .5

5.5 ± .5

1/4 ± 1/16

 

 

 

 

 

1/4 ± 1/16

 

 

 

 

 

 

 

 

 

 

 

 

 

7.5 Ton

 

 

 

 

 

1/4 ± 1/16

 

 

 

3.0 to 4.0

4.5 ± .5

5.5 ± .5

 

8.5

 

High

1/4 ± 1/16

 

A, AX

 

 

 

 

10 Ton

 

 

 

1/4 ± 1/16

Static

 

 

 

12.5 Ton

 

 

3.6 to 4.6

4.9 ± .5

6.0 ± .5

1/4 ± 1/16

 

 

 

 

 

1/4 ± 1/16

 

 

 

 

 

 

RECOMMENDED POUNDS OF FORCE PER BELT

The correct deflection force is 5 Ibs. for a new belt and 3.5 Ibs. for a belt that has been run in. New belt tension includes initial belt stretch. When new V-belts are installed on a drive the initial tension will drop rapidly during the first few hours. Check tension frequently during the first 24 hours of opera- tion. Subsequent retensioning should fall between the mini- mum and maximum force. To determine the deflection dis- tance from the normal position, use a straightedge or stretch a cord from sheave to sheave to use as a reference line. On multiple belt drives, an adjacent undeflected belt can be used as a reference.

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Contents Recognize this Symbol AS a Safety Precaution Safety Instructions Replacement PartsGeneral Information High VoltageUnit Location Electrical Entrance Locations Roof TOP Duct Connections Roof Curb POST-INSTALLATION ChecksRoof Curb Installation ClearancesHorizontal Discharge Duct Connections Rigging DetailsCorner & Center of Gravity Locations Electrical WiringPower and LOW Voltage Block Locations CPG 090 Through 300 GAS Heat GAS Supply PipingProper Piping Practice Natural Gas ConnectionTypical Propane GAS Piping Propane GAS InstallationsDrain Connection STARTUP, ADJUSTMENTS, and ChecksCirculating AIR and Filters Venting Condensate Drain ConnectionMoving Machinery Hazard Recommended Pounds of Force PER Belt Drive Belt Tension AdjustmentRollout Protection Control Manifold Pressure Check Burn Hazard Normal Sequence of Operation Heat Exchanger and Burner Orifice SpecificationsCheck rollout limit TroubleshootingInput Rating AIR Flow AdjustmentsMotor Sheave Adjustments WHITE-RODGERS 36H54 Pressure AdjustmentsMaintenance Burner Flame CPG090 Standard Belt Drive Horizontal CPG090 Standard Belt Drive Down Shot CPG090 High Static Belt Drive Down Shot Appendix B Electrical Data Vertical Discharge Bottom of Unit Horizontal Discharge0140L00550 REV a INSTALLER/SERVICEMAN 0140L00552 REV B 208-240/3/60 0140L00553 REV B
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CPG SERIES specifications

Goodman Manufacturing has long been a trusted name in the HVAC industry, known for delivering reliable and efficient heating and cooling solutions. Among its impressive lineup is the CPG series, a collection of packaged units that cater to a wide range of residential and commercial applications. The CPG series is designed with the latest technologies and features, making it an ideal choice for those seeking comfort and performance.

One of the most significant characteristics of the CPG series is its energy efficiency. Engineered to meet rigorous energy standards, these units utilize advanced refrigerant technologies that not only lower energy consumption but also contribute to reducing environmental impact. The high-efficiency scroll compressor within the CPG series is designed to operate quietly and smoothly, ensuring that homeowners enjoy a comfortable indoor environment without disruptive noise.

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Moreover, the CPG series supports various accessories and enhancements, such as advanced filtration systems and programmable thermostats, allowing users to customize their HVAC system based on specific needs and preferences.

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