System Voltage - That nominal voltage value assigned to a circuit or system for the purpose of designating its voltage class.

Nameplate Voltage - That voltage assigned to a piece of equipment for the purpose of designating its voltage class and for the purpose of defining the minimum and maximum voltage at which the equipment will operate.

Utilization Voltage - The voltage of the line terminals of the equipment at which the equipment must give fully satisfac- tory performance. Once it is established that supply voltage will be maintained within the utilization range under all sys- tem conditions, check and calculate if an unbalanced condi- tion exists between phases. Calculate percent voltage un- balance as follows.

Three Phase Models Only

 

 

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.

BELT DRIVE MODELS ONLY

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.

Belt Tension Adjustment

t = Span length, inches

C = Center distance, inches

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

h = Deflection height, inches

TYPE

SMALL

DEFLECTION

 

DEFLECTION

SHEAVE

 

FORCE (lbs)

 

 

 

DIAMETER

 

(in)

 

 

 

 

 

BELT

DRIVE

(in)

USED

NEW

 

 

 

 

 

 

 

 

AX

Standard

3.0 to 4.0

4.2 ± 0.5

5.5 ± 0

.5

0.313

Recommended Pounds of Force Per Belt

New V-belts will drop rapidly during the first few hours of use. Check tension frequently during the first 24 hours of opera- tion. Tension should fall between the minimum and maximum force. To determine the deflection distance from a normal position, measure the distance from sheave to sheave using a straightedge or a cord. This is your reference line. On mul- tiple belt drives, an adjacent undeflected belt can be used as a reference.

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Goodman Mfg CPG SERIES installation manual Three Phase Models Only, Percent voltage unbalance Must not exceed 2%

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.

The CPG series also stands out with its robust construction. Each unit is crafted from durable materials that can withstand various weather conditions, ensuring longevity and reliability. The all-aluminum evaporator coil enhances corrosion resistance, prolonging the unit's lifespan and maintaining optimal performance throughout its operation.

In terms of features, the CPG series offers an integrated microprocessor control system that optimizes performance based on real-time environmental data. This smart technology allows for accurate temperature control and improved efficiency by adapting to changing conditions. Furthermore, the series provides multiple capacity options, making it flexible for various building sizes and requirements.

Ease of installation and maintenance is another hallmark of the CPG series. These packaged units are designed for quick setup, reducing labor costs and installation time. Additionally, the access panels on the units are strategically placed, facilitating easier maintenance and servicing. This advantage not only enhances user convenience but also ensures that the units operate efficiently for years to come.

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.

In conclusion, the Goodman CPG series embodies a perfect blend of efficiency, durability, and technology. With its focus on energy savings and user-friendly design, it represents a sound investment for those seeking superior HVAC solutions for their homes or commercial spaces. Whether it's for new construction or an upgrade to an existing system, the CPG series offers performance and reliability that customers can depend on.