Normal Sequences of Operation

HEATING

This unit is equipped with an ignition control that automatically lights the main burner. DO NOT attempt to light the main burners by any other method.

1.Thermostat calls for low or high stage heating.

2.Induced draft blower energizes for 15-second pre-purge.

3.The spark igniter and low and high stage gas valve are energized for 7 seconds. NOTE: The igniter produces a very intense electrical spark that ignites the gas.

4.Main burners light and control detects presence of flame.

5.If the call is for low stage heat, the induced draft blower switches to low speed and the high stage gas valve closes 5 seconds after the main burners light. If call is for high stage heat, induced draft blower remains at high speed and high stage gas valve remains open.

NOTE: If a single stage thermostat is used, the control will step to low stage after the main burners light and remain at low stage for 5 or 10 minutes, depending on jumper position. If the call for HEAT remains after the transition delay time expires, the control will transition from low stage to high stage.

6.The 30-second HEAT FAN ON delay time begins after the main burners light.

7.The unit delivers heat to the conditioned space until the thermostat is satisfied.

8.Gas valve(s) de-energizes. The induced draft blower continues operation for a 30-second post-purge.

9.Induced draft blower remains at low speed (or switches from high to low if operating at high stage heat) for the 30- second post purge.

10.Ignition control begins timing the HEAT FAN OFF delay. There is an adjustable HEAT FAN OFF delay of approximately 90/120/150/180 seconds (factory set at 150). If the unit is operating at high stage when the call for heat is removed, the blower will operate for 30 seconds at high heat speed then switch to low heat speed for the remainder of the selected HEAT FAN OFF delay.

NOTE: After the HEAT FAN OFF delay time has elapsed, the blower will de-energize. This allows any additional heat in the heat exchanger to be transferred to the conditioned space.

COOLING

1.Thermostat calls for low or high stage cooling.

2.If the thermostat call is for low stage cooling, the compressor and outdoor fan are energized at low stage. If the thermostat call is for high stage cooling, the compressor and outdoor fan are energized at high stage.

3.The indoor blower will energize approximately 6 seconds later.

4.The unit delivers cooling to the conditioned space until the thermostat is satisfied.

5.The compressor and outdoor fan will be de-energized when the thermostat opens.

6.The indoor blower continues to run at low cool speed for approximately 60 seconds after the thermostat is satisfied. This allows additional cooling from the indoor coil to be transferred to the conditioned space. Then, the indoor blower is de-energized.

NOTE: A 180-second anti-short cycle is integral to the control and prevents recycling of the compressor.

FAN ONLY

1.Thermostat calls for FAN ONLY by energizing “G”.

2.The indoor blower is immediately energized at the low heat speed.

3.The indoor blower is immediately de-energized once thermostat call for FAN is removed.

STARTUP, ADJUSTMENTS, AND CHECKS

HEATING STARTUP

This unit is equipped with an electronic ignition device to automatically light the main burners. It also has a power vent blower to exhaust combustion products.

On new installations, or if a major component has been replaced, the operation of the unit must be checked.

Check unit operation as outlined in the following instructions. If any sparking, odors, or unusual sounds are encountered, shut off electrical power and check for wiring errors, or obstructions in or near the blower motors. Duct covers must be removed before operating unit.

Heat Anticipator Setting

Set the heat anticipator on the room thermostat to 0.4 amps to obtain the proper number of heating cycles per hour and to prevent the room temperature from overshooting the room thermostat setting.

Rollout Protection Control

The rollout protection device opens, cutting power to the gas valve, if the flames from the burners are not properly drawn into the heat exchanger. The rollout protection device is located on the burner bracket. The reason for elevated temperatures at the control must be determined and repaired prior to resetting this manual reset control.

Rollout Protection

Rollout Protection on Burner Bracket

Secondary Limit Control

The secondary limit control is located on the top of the blower scroll assembly. This control opens when elevated temperatures are sensed. Elevated temperatures at the control are normally caused by blower failure. The reason for the opening should be determined and repaired prior to resetting.

PG 15 specifications

Goodman Manufacturing's PG 15 series stands out in the competitive HVAC market as a high-efficiency, cost-effective option for both residential and light commercial applications. This product line is particularly valued for its reliable performance and innovative technologies, which focus on energy efficiency, durability, and user comfort.

One of the main features of the PG 15 is its SEER (Seasonal Energy Efficiency Ratio) rating, which reflects its ability to provide superior cooling while using less energy. The higher the SEER rating, the more efficiently the unit operates, leading to significant savings on energy bills. The PG 15 boasts an impressive SEER rating, making it an ideal choice for conscientious consumers looking to lower their utility costs.

Incorporating advanced technologies, the PG 15 features a high-efficiency scroll compressor. This design minimizes vibration and noise, providing a quieter operation that enhances overall comfort in the living or working environment. Additionally, the compressor is designed for longevity, reducing maintenance needs and enhancing the unit's lifespan.

Another notable characteristic of the PG 15 is its durable construction. The unit is built with a galvanized steel cabinet that is protected with a rust-resistant finish, ensuring it withstands the rigors of harsh weather conditions. The 15-inch fan motor and multi-speed blower also contribute to efficient airflow and improved indoor air quality, while the refrigerant management system aids in efficient cooling performance.

Installation versatility is another advantage of the PG 15 series. Designed to accommodate a range of installation setups, this system can easily integrate into existing frameworks, making it suitable for both new constructions and retrofits.

Furthermore, Goodman Mfg places emphasis on customer satisfaction and support. The PG 15 series comes with a comprehensive warranty, offering peace of mind to homeowners and business owners alike. This commitment to quality and customer service has helped Goodman establish a reputation for reliability and performance in the HVAC industry.

In summary, the Goodman PG 15 stands out due to its energy-efficient design, advanced technologies, durable construction, and versatile installation options, making it a compelling choice for anyone seeking an effective and reliable HVAC solution.