NORTEK MG2R Series Condensing Gas Furnace
Safety Instructions
- The ability to properly perform maintenance on this equipment requires certain mechanical skills and tools.
- Please consult your dealer for maintenance information and the availability of maintenance contracts.
- Do not store or use flammable items such as paint, varnish, or strippers in the vicinity of the unit.
- Do not use the area around the unit as a storage area.
Flood Damage
Do not use this furnace if any part has been underwater. A flood-damaged furnace is extremely dangerous. Attempts to use the furnace can result in fire or explosion.
Gas Supply & Pipng
- Do not try to light any appliance.
- Do not touch any electrical switch; do not use any phone in your building.
- Leave the building immediately.
- Immediately call your gas supplier from a neighbor’s phone.
- If you cannot reach your gas supplier, call the fire department.
- Installation and service must be performed by a qualified installer, service agency, or the gas supplier.
Venting System
CARBON-MONOXIDE POISONING HAZARD
Failure to follow instructions could result in severe personal injury or death due to carbon-monoxide poisoning if combustion products infiltrate into the building.
- For proper and safe operation, this furnace requires unrestricted airflow for combustion and ventilation.
- Do not block or obstruct air openings on the furnace, air openings around the furnace area, or the spacings around the furnace.
- Before you remodel a room near the furnace, consult with a local code official or the National Fuel Gas Code to make sure you will be in compliance with supplying adequate air for combustion.
- By erecting new walls, it is sometimes possible to inadvertently restrict the furnace’s air supply.
- You can find more information about supplying combustion air in the NFGC, which is available at many libraries.
Clearances To Combustibles
The furnace is designed to have certain clearances to combustible items such as wood, paper, etc. Some types of insulation are combustible. If your furnace is installed in an attic, near unfinished walls, or in another insulated space, keep the area surrounding the furnace free of insulating material. See Figure 1 below.
Startup & Shutdown
Starting
- Make sure the filter is clean NORTEK MG2R Series Condensing Gas Furnace and properly installed.
- Make sure the vent system is properly installed.
- Set the thermostat to the lowest setting.
- Close the manual gas valve outside the furnace.
- Turn off all electricity to the furnace.
- Remove the door from the burner compartment.
- Set the gas valve ON/OFF knob / switch to the OFF position. See Figure 2 for gas valve type and knob/switch location.
- Wait 5 minutes. If there is any smell of gas, see WHAT TO DO IF YOU SMELL GAS on page 1.
- Set the gas valve ON/OFF knob to the ON position.
- Turn on all electricity to the furnace, including the ON/ OFF switch.
- Open the manual gas valve.
- Turn the thermostat back up to force ignition.
- Observe operation, including burners. If burners fail to ignite, call a licensed HVAC technician.
- Replace the door on the burner compartment.
Shutting Down
If you need to shut down your furnace for service or maintenance, follow these steps:
- Set the thermostat to the lowest setting.
- Close the manual gas valve NORTEK MG2R Series Condensing Gas Furnace outside the furnace.
- Turn the electricity to the furnace off.
- Open the door to the burner compartment.
- Set the gas valve ON/OFF knob / switch to the OFF position.
- Set the ON / OFF switch to off.
- Replace the door on the burner Compartment.
Furnance Components
The furnace components shown in Figure 3 will help identify and locate various parts of the furnace. The component you need to familiarize yourself with is the gas valve. You will use this to turn the furnace on and off. There are no user-serviceable parts. All repairs must be done by a licensed HVAC technician.
Shutting Down
If you need to shut down your furnace for service or maintenance, shut off the gas valve to the furnace before shutting off the electrical service. Remove the door panel from the front of the furnace and turn the gas valve OFF. Additional instructions for shutting down the furnace can be found on page 7. If your installation has a manual gas shutoff valve on the gas supply pipe, shut this off, then shut off the electricity to the furnace.
About the Furnaces
- This furnace has been tested for capacity and efficiency by AHRI Standards and will provide many years of safe and dependable comfort, provided it is properly installed and maintained.
- With regular maintenance, this unit will operate satisfactorily year after year. Abuse, improper use, and/or improper maintenance can shorten the life of the appliance and create unsafe hazards.
Air Filters
- An air filter is supplied with the furnace as shipped from the factory.
- It should always have a clean filter.
- Filters designed to remove smaller particles, such as pollen, may require additional maintenance.
Thrmostat
Single-stage gas furnaces (MG2R series) are designed to be controlled by a conventional single-stage thermostat. Two-stage gas furnaces (MG2S series) will perform best with a conventional two-stage thermostat. However, it is possible to control the MG2S furnace with a single-stage thermostat. Consult with your installer about which type is best for your installation. Both thermostats are commonly available at your local building supply store.
- The thermostat’s wiring must comply with the current provisions of the NEC (ANSI/NFPA 70) and with applicable local codes having jurisdiction.
- Thermostat styles vary. Please refer to the thermostat manufacturer’s User Manual for detailed programming instructions.
In Small Areas
Make sure that these openings remain unobstructed. Do not modify these openings in any way without consulting a licensed HVAC technician.
Source of Corrosion
- Gasoline/Kerosene
- Permanent wave solutions
- Chlorinated waxes and cleaners
- Chlorine-based swimming pool chemicals
- Water softening chemicals
- De-icing salts or chemicals
- Carbon tetrachloride
- Halogen-type refrigerants
- Cleaning solvents (perchloroethylene)
- Printing inks, paint removers, varnishes, etc.
- Hydrochloric acid
- Cements and glues
- Antistatic fabric softeners
- Masonry acid-washing materials
Maintainance
Proper maintenance is important to achieve optimum performance from the furnace. Routine maintenance should include the following:
Blower & Filters
- Never operate the furnace without a filter in place. Dust and lint can build up on internal components, resulting in loss of efficiency, equipment damage, and possible fire.
- Keep air filters cleaned. Clean or replace the filter to maintain proper airflow and achieve maximum efficiency.
- Filters designed to remove smaller particles, such as pollen, may require additional maintenance.
Drainage
- This furnace produces liquid condensate, which is slightly acidic.
- Condensate drain tubes must maintain a downward slope to ensure proper drainage. Periodically inspect the condensate drain tube for proper drainage. Also, do not place heavy objects on the tubing that restricts the flow of condensate.
Venting System
- For proper and safe operation, the furnace needs air for combustion and ventilation.
- Direct vent furnaces pull combustion air from the outdoors and vent combustion products back outside.
- Combustion air coming from the outside needs to be clean of chemicals that can cause corrosion, such as pool chlorinating products.
- The vent pipe must slope upwards and be physically sound without holes or corrosion.
Troubleshooting
If the furnace fails to operate, check the following:
- Is the thermostat setting correct?
- Is the filter dirty or clogged?
- If the furnace still doesn’t operate, contact a licensed HVAC technician.
Warranty Information
A warranty certificate with full details is included with the equipment. Carefully review these responsibilities with your dealer or service company. The manufacturer will not be responsible for any costs found necessary to correct problems due to improper setup, improper installation, adjustments, or improper operating procedure on the part of the user. Some specific examples of service calls which are not included in the limited warranty are:
- Correcting wiring problems NORTEK MG2R Series Condensing Gas Furnace in the electrical circuit supplying the equipment.
- Resetting circuit breakers or other switches.
- Adjusting or calibrating of thermostat.
Customer Service
- Ph: +47 6717 4500
- Website https://support.nortekgroup.com
FAQs
What type of furnace is the NORTEK MG2R Series?
A high-efficiency condensing gas furnace intended for downflow applications is the MG2R Series. It runs on either natural gas or propane and has an AFUE rating of 95%, which means that the majority of the fuel is converted into useful heat.
What does “95% AFUE” mean?
The acronym for Annual Fuel Utilisation Efficiency is AFUE. The MG2R Series is far more efficient than earlier, non-condensing furnaces because of its 95% AFUE rating, which indicates that up to 95% of the fuel energy is converted into heat for your home.
Where can the MG2R furnace be installed?
When downflow configurations are needed, this furnace is usually installed in manufactured houses, modular homes, park models, and similar structures.
Can I use natural gas and propane with this furnace?
Yes, the MG2R Series can switch between natural gas and liquid propane (LP) with a few easy installation changes.
Does this furnace have safety features?
Indeed. For simpler maintenance and safer operation, it has sealed combustion with draft inducer and pressure switches, hot surface ignition, limit controls, and diagnostic lights.
What maintenance is required for the MG2R furnace?
To maximise effectiveness and longevity, routine maintenance entails cleaning or replacing filters, making sure there is adequate airflow, inspecting vent lines for obstructions, and scheduling yearly professional inspections.
Is the MG2R Series quiet when running?
The unit’s insulation, inducer position, and burner design all contribute to its clean and silent operation.
What size options are available in the MG2R Series?
To accommodate various heating requirements and home sizes, the MG2R Series offers a variety of input sizes, such as 45,000, 60,000, and 72,000 BTU/hour.