Burner Instructions, Pilot Instruction | York R-410A instruction

279550-YIM-A-0207

	Hi Fire
	(2nd Stage)
	Manifold Pressure
		Low Fire
		(1st Stage)
		Manifold Pressure
Manual		Adjustment
Manual
Gas		Electrical
Switch		Connection
		Manifold
		Pressure
		Tap
Pilot
Adjustment		½ NPT
(Remove Cap)		½ NPT
(Remove Cap)		(Outlet)
	Pilot	(Outlet)
	Pilot
	Gas
	Connect

Figure 16: Two Stage Gas Valve Front

3.To increase the gas pressure, turn the adjusting screw clockwise.

NOTE: The correct manifold pressure for natural gas furnaces is 3.5 IWG high heat and 1.5 IWG low heat. The correct manifold pressure for propane (LP) is 10.0 IWG high heat and 4.5 IWG low heat.

Burner Instructions

To check or change the burners, CLOSE THE MAIN MANUAL SHUT-OFF VALVE AND SHUT OFF ALL POWER TO THE UNIT.

1.Remove the two (2) #8 screws holding each burner in place.

2.Remove the burner assembly from the manifold assembly by moving the burner assembly forward, turn at an angle and pull back.

3.Burners are now accessible for service.

Pilot Instruction

To adjust the pilot flame:

3 8" min.

		Line
½ NPT		Pressure

		Tap
(Inlet)

Figure 17: Single Stage Gas Valve Rear

½NPT

(Inlet)

Line Pressure

Tap

Figure 18: Two Stage Gas Valve Rear

Adjust as follows:

1.Remove the cap from the valve body. See Figures 15 and 16 for location.

2.To decrease the gas pressure, turn the adjusting screw counterclockwise.

Spark Ignitor

Pilot

Flame Sensor

Figure 19: Proper Flame Adjustment

1.Remove the pilot adjustment cover screw.

2.Adjust the pilot adjustment screw to achieve the proper pilot flame.

3.The pilot flame should envelope 3/8” of the end of the flame sensor and not contain any yellow color, see Figure 19.

4.Replace the pilot adjustment cover screw after the pilot flame is set.

To check, adjust or remove the pilot assembly, CLOSE THE MAIN MANUAL SHUT-OFF VALVE AND SHUT OFF ALL POWER TO THE UNIT.

1.Disconnect the wiring from the control board to the pilot assembly.

2.Remove the two (2) #8 screws holding the pilot assembly in place.

3.Remove the pilot assembly.

26	Unitary Products Group

R-410A specifications

York R-410A is a widely recognized and highly efficient refrigerant used in modern air conditioning systems. Developed as an environmentally friendly alternative to R-22, R-410A has gained popularity in the HVAC industry due to its numerous advantageous features and characteristics.

One of the main features of York R-410A is its ability to provide superior cooling performance. This refrigerant operates efficiently at both high and low temperatures, allowing systems using it to maintain optimal indoor climates even during extreme weather conditions. Its high energy efficiency ratio (EER) and seasonal energy efficiency ratio (SEER) ratings make it a preferred choice for energy-conscious consumers, resulting in lower energy bills and a reduced carbon footprint.

Technologically, York R-410A systems feature advanced compressor designs that enhance their overall reliability and performance. These compressors are often equipped with variable-speed technology, enabling them to adjust their output to match the cooling demands of the space. This not only improves comfort levels but also leads to efficient energy consumption, reducing wear and tear on the equipment over time.

Another significant characteristic of York R-410A is its non-ozone-depleting properties. Unlike its predecessor R-22, which is being phased out due to its damaging effects on the ozone layer, R-410A is designed to minimize environmental impact. Its lower global warming potential (GWP) further underscores its role in promoting sustainability within the HVAC sector.

Furthermore, York R-410A systems are engineered with enhanced safety features. The refrigerant is non-toxic and non-flammable, which makes it safer for use in both residential and commercial applications. Additionally, its high thermal stability reduces the risk of breakdown or leakage, contributing to longer system lifespans and lower maintenance costs.

In conclusion, York R-410A stands out as a cutting-edge refrigerant that combines efficiency, safety, and environmental responsibility. With its advanced technologies and remarkable characteristics, it meets the demands of modern air conditioning requirements while paving the way for a sustainable future in HVAC systems. Adopting York R-410A not only benefits individual users through improved comfort and lower energy bills but also plays a vital role in protecting our planet's ozone layer and mitigating climate change.