Goodman Mfg VC8 instruction manual Cool Airflow CL CFM

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COMFORTNET™ SYSTEM

NON-COMM (APPLIES ONLY TO A CT COMPATIBLE FURNACE MATCHED

WITH A NON-CT COMPATIBLE SINGLE STAGE AIR CONDITIONER)

Submenu Item

User Modifiable Options

Comments

Cool Airflow (CL CFM)

18, 24, 30, 36, 42, 48, or 60, default

Selects the airflow for the non-CT

 

is 18

compatible single stage AC unit

 

 

 

Cool Airflow Trim (CL TRM)

-10% to +10% in 2% increments,

Selects the airflow trim amount for the non-

 

default is 0%

CT compatible single stage AC unit

Cool Airflow Profile (CL PRFL)

A, B, C, or D, default is A

Selects the airflow profile for the non-CT

 

 

compatible single stage AC unit

Cool ON Delay (CL ON)

5, 10, 20, or 30 seconds, default is

Selects the indoor blower ON delay for the

 

5 seconds

non-CT compatible single stage AC unit

 

 

 

Cool OFF Delay (CL OFF)

30, 60, 90, or 120 seconds, default

Selects the indoor blower OFF delay for the

 

is 30 seconds

non-CT compatible single stage AC unit

 

 

 

NETWORKTROUBLESHOOTING

Communications is achieved by taking the difference between two dc signals. The signals and transmission lines are referred to as “data 1” and “data 2”. Each transmission line is biased to approximately 2.5Vdc. During data recep- tion/transmission, the data lines vary between +5V and ground. (When data 1 is increasing towards +5V, data 2 is decreasing towards ground and when data 1 is decreasing towards ground, data 2 is increasing towards +5V. Typically, the data 1 line is approximately 2.6Vdc and the data 2 transmission line is approximately 2.3Vdc. The voltage difference between data 1 and data 2 is typically 0.2 to 0.6 Vdc.

The indoor control is equipped with a bank of three dipswitches that provide biasing and termination functions for the communications transmission lines. The outdoor control in the CT compatible unit is equipped with a bank of two dipswitches that provide termination functions for the com- munications transmission lines. Communications errors will result if these switches are not correctly set. The table below indicates the switch position for the bias and termina- tion dipswitches along with the expected voltages. Note that the ON position is the correct position for all bias and termination dipswitches.

OFF

ON

1

 

 

 

 

 

BIAS

 

 

 

 

 

2

 

 

 

 

 

BIAS

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

TERM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

shoot the network may arise. The integrated furnace control has some on-board tools that may be used to troubleshoot the network. These tools are: red communications LED, green receive (Rx) LED, and learn button.

•Red communications LED – Indicates the status of the network. The table below indicates the LED status and the corresponding potential problem.

•Green receive LED – Indicates network traffic. The table below indicates the LED status and the corresponding potential problem.

•Learn button – Used to reset the network. Depress the button for approximately 2 seconds to reset the network.

SYSTEM TROUBLESHOOTING

NOTE: Refer to the instructions accompanying the CT compatible outdoor AC/HP unit for troubleshooting information.

Refer to the Troubleshooting Chart in the Appendix for a listing of possible furnace error codes, possible causes and correc- tive actions.

Indoor Unit BIAS and TERMINATION Dipswitches

The ComfortNet system is a fully communicating system, and thus, constitutes a network. Occasionally the need to trouble-

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Contents Installation Instructions for *D, MVC8 GAS Furnace Upright Installations Table of Contents What to do if YOU Smell GAS Safety PrecautionsKeep this literature in a safe place for future reference Product ApplicationProduct Description Location Requirements and ConsiderationsNational Fire Protection Association, Inc CSA InternationalClearances and Accessibility Combustion & Ventilation Category Following vent testing procedure is reproduced fromCategory I Venting Vertical Venting Exterior Masonry Chimneys Category I Furnaces onlyExteriormasonrychimneyscategoryifurnacesonly Proper Chimney Termination? Check Check 3 Chimney Crown Condition Electrical Connections High Voltage Important Note Single Stage Heating with Single Stage Cooling Thermostat Wiring DiagramsGAS Supply and Piping Accessories WiringGas Altitude Kit Orifice Manifold Pressure Circulating AIR and FiltersGeneral Furnace Layout Propane Gas Installation Typ Checking Static Pressure 80% Furnace Shown, 90% Similar START-UP Procedure and AdjustmentUpright Installations Honeywell Model VR9205 Connected to Manometer White-Rodgers Model 36G54 Two-StageWhite-Rodgers Model 36G54 Connected to Manometer Honeywell Model VR9205 Two-StageMeasuring Inlet Gas Pressure Alt. Method Example Temperature Rise MeasurementSwitch Bank S4 Heat Off Delay Dipswitches Switch Bank S4Comfortnet System Comfortnet SystemCTK01AA System Wiring using Four-WiresTo step to the next item Configuration Cool Airflow CL CFM Normal Sequence of Operation Operational Checks & Safety Circuit DescriptionOperational Checks Troubleshooting & Maintenance Safety Circuit DescriptionTroubleshooting Miscellaneous MaintenanceRepair and Replacement Parts Before Leaving AN InstallationInternal Troubleshooting ChartLimit Message ChartInvalid Trips Status Codes AIR Flow Data DIP SwitchesRD WH MVC8AA Wiring DiagramMVC8AB, *DVC8AA Wiring Diagram

VC8 specifications

Goodman Manufacturing has established itself as a leading provider of quality heating, ventilation, and air conditioning (HVAC) systems. Among its impressive lineup is the Goodman VC8, a versatile and efficient variable-capacity air conditioner that stands out due to its innovative design and advanced technologies.

The Goodman VC8 is known for its superior energy efficiency, featuring a SEER (Seasonal Energy Efficiency Ratio) rating higher than 20. This means that it operates efficiently across various climatic conditions, ensuring optimal cooling with minimal energy consumption. The high SEER rating not only translates to lower energy bills but also contributes to a reduced environmental footprint, making it a smart choice for eco-conscious consumers.

One of the standout features of the VC8 is its variable-speed compressor, which allows the system to adjust its output based on the cooling needs of the space. This technology enables the unit to run at lower speeds for longer periods, maintaining a consistent temperature while reducing energy usage. The variable-speed operation also contributes to quieter operation compared to traditional air conditioning systems. Homeowners can enjoy a peaceful indoor environment without the disruptive noise commonly associated with air conditioning units.

In terms of comfort, the Goodman VC8 employs advanced humidity control features, ensuring that moisture is efficiently managed within the space. This not only enhances comfort levels but also helps to prevent issues related to excessive humidity, such as mold growth and structural damage.

The VC8 is designed for reliable performance and durability, with its robust construction and dependable components. Goodman manufactures its products with high-quality materials to withstand the rigors of daily use and various weather conditions, ensuring long-lasting operation.

Additionally, the VC8 incorporates smart technology features, including compatibility with Wi-Fi-enabled thermostats. Homeowners can easily monitor and control their system remotely, providing convenience and peace of mind.

The Goodman VC8 is an exemplary solution for those looking for an energy-efficient, advanced air conditioning system. With its variable-speed compressor, excellent humidity control, durable construction, and smart features, it promises comfort and reliability suitable for any residential space. By choosing Goodman, homeowners can invest in a quality HVAC system designed to meet modern needs and preferences.
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