Testing for Proper Venting and Sufficient Combustion Air for Non-Direct Vent Applications

WARNING

CARBON MONOXIDE POISONING HAZARD

Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death.

The following steps shall be followed for each appliance connected to the venting system being placed into operation, while all other appliances connected to the venting system are not in operation.

After the gas furnace has been started, the following test should be conducted to ensure proper venting and sufficient combustion air has been provided to the unit as well as to other gas–fired appliances which are separately vented.

If this furnace replaces a Category I furnace which was commonly vented with another gas appliance, the size of the existing vent pipe for that gas appliance must be checked. Without the heat of the original furnace flue products, the existing vent pipe is probably oversized for the single water heater or other appliance. The vent should be checked for proper draw with the remaining appliance.

The test should be conducted while all appliances (both in operation and those not in operation) are connected to the venting system being tested. If the venting system has been installed improperly, or if provisions have not been made for sufficient amounts of combustion air, corrections must be made as outlined in the previous section.

1.Seal any unused openings in the venting system.

2.Visually inspect the venting system for proper size and horizontal pitch. Determine there is no blockage or restriction, leakage, corrosion, or other deficiencies which could cause an unsafe condition.

3.To the extent that it is practical, close all building doors and windows and all doors between the space in which the appliances connected to the venting system are located and other spaces of the building.

4.Close fireplace dampers.

5.Turn on clothes dryers and any appliances not connected to the venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan.

6.Follow the lighting instruction to place the appliance being inspected into operation. Adjust thermostat so appliance will operate continuously.

7.Use the flame of match or candle to test for spillage of flue gases at the draft hood relief opening after 5 minutes of main burner operation.

8.If improper venting is observed during any of the above tests, the venting system must be corrected or sufficient combustion/makeup air must be provided. The venting system should be re–sized to approach the minimum size as determined by using the appropriate tables in appendix G in the current standards of the National Fuel Gas Code ANSI-Z223.1/NPFA 54 in the U.S.A., and the appropriate Natural Gas and Propane appliances venting sizing tables in the current standard of the CSA- B149 Natural Gas and Propane Installation Codes in Canada.

9.After determining that each appliance remaining connected to the common venting system properly vents when tested as indicated in step 3, return doors, windows, exhaust fans, fireplace dampers and any other gas burning appliance to their previous condition of use.

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Allied Air Enterprises A95UH, 95G1UH, A93UH, 92G1UH installation instructions Carbon Monoxide Poisoning Hazard
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92G1UH, 95G1UH, A95UH, A93UH specifications

Allied Air Enterprises is renowned for producing high-quality HVAC systems, and its models A93UH, 92G1UH, A95UH, and 95G1UH are no exception. These units exemplify cutting-edge technology, efficiency, and reliability, making them popular choices for residential and commercial applications.

The A93UH model is a high-efficiency gas furnace designed with advanced features that maximize performance while maintaining low operating costs. It boasts a 93% Annual Fuel Utilization Efficiency (AFUE) rating, which ensures that a significant portion of the fuel consumed translates into heat. The A93UH incorporates variable-speed blower technology, allowing for precise airflow adjustments that enhance comfort and energy savings.

Similarly, the 92G1UH is built to provide exceptional heating capabilities. With a robust construction and innovative design, this model also achieves a 92% AFUE rating. It features a durable heat exchanger and a reliable ignition system that ensures consistent performance. The 92G1UH is engineered for quiet operation, minimizing noise levels and contributing to a more comfortable indoor environment.

Moving on to the A95UH, this unit represents the pinnacle of efficiency with its impressive 95% AFUE rating. This model not only emphasizes energy savings but also focuses on long-term durability. Equipped with a two-stage gas valve, the A95UH allows for flexible heating based on demand, which translates into enhanced comfort and efficiency. Additionally, the integrated SmartComfort technology provides homeowners with user-friendly control options.

The 95G1UH model shares many of the same advanced features as the A95UH but is tailored for different installation scenarios. With a comparable efficiency rating, the 95G1UH emphasizes ease of maintenance and installation. Its compact design and lightweight construction make it an ideal choice for various settings where space is limited.

All four models incorporate the latest in comfort control technology, allowing for seamless connectivity and programmability. Homeowners can utilize smart thermostats to optimize their heating schedules, further enhancing energy savings. The featured robust warranty and service support from Allied Air Enterprises provide peace of mind, ensuring that these units will deliver reliable performance for years to come.

Overall, the A93UH, 92G1UH, A95UH, and 95G1UH models stand out in the HVAC market due to their efficiency, innovative features, and durability. These units cater to a variety of heating needs while keeping operational costs low, making them wise investments for any property owner.
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