To Next PageTo Next PageWhat to do if Nortek Furnace locks out after 5 failed attempts for ignition?
If your Nortek Furnace locks out after five failed ignition attempts, it will automatically try again every hour as long as there is a call for heat.
What to do if inducer blower is operating but Nortek FG7MQ still doesn’t operate?
If the inducer blower in your Nortek Furnace is running but the furnace still isn’t operating, check the Blower Limit Switch and reset it if needed. If the furnace then operates after resetting the switch, contact a qualified service technician to identify and repair the underlying problem.
What to do if Nortek Furnace still doesn’t operate after checking the previous items?
If your Nortek Furnace still isn’t operating after checking the previous items, check the Flame Roll-out Switches and reset them if necessary. If the furnace operates when the Flame Rollout Switch is reset, contact a qualified service technician to identify and repair the problem.
Critical safety warning about fire and explosion risks.
Emergency procedures to follow if gas is detected.
Defines "WARNING" and "CAUTION" terms used in the manual.
Covers qualified personnel, authorized kits, and water-damaged furnace risks.
Outlines essential codes and standards for furnace installation.
Details specific compliance requirements for Massachusetts.
Caution regarding corrosive air impacting furnace longevity.
Guidelines for operating the furnace during building construction.
Specific requirements for installing the furnace in a garage environment.
Specifies minimum safe distances from furnace to combustible surfaces.
Critical warning about CO poisoning from improper venting.
Outlines compliance with codes and quality of combustion air.
Warnings about flue leaks and combined venting issues.
Requirements for drawing combustion air from heated spaces.
Details on using crawl spaces, attics, or ducts for combustion air.
Requirements for intake air coming directly from outside walls.
Alternative methods for providing combustion air per NFGC.
Venting requirements for unconfined installation spaces.
Warnings specific to Category IV venting systems and condensate.
Lists acceptable materials for vent and combustion air piping.
Guidance on selecting and sizing vent pipes and elbows.
Includes cautions on corrosive air and routing advice.
Diagrams and requirements for horizontal vent terminations.
Illustrates alternative vent installation configurations.
Spacing requirements for vertical vent terminations.
Precautions and methods to prevent vent pipe freezing.
Guidance on replacing old vents and disposing of condensate.
Critical warning about circulating combustion products in living space.
Requirements for ductwork, plenums, and return air connections.
Warning about furnace operation with side return air ducts.
Instructions for connecting ducts for downflow and supply air.
Methods for reducing furnace noise transmission.
Covers leveling, water protection, and basic installation types.
Illustrates horizontal installation on platforms and suspension.
Step-by-step guide for removing the bottom panel.
Information on rotating the inducer for venting flexibility.
Safety warnings before rotating the inducer assembly.
Describes installation of finish flange and rubber grommets.
Instructions for installing PVC tees, traps, and hose barbs.
Notes on routing and insulating condensate drain lines.
Illustrates the proper routing of pressure switch tubing.
Critical warnings regarding electrical shock, fire, and explosion during servicing.
Safety warnings for gas supply and leak testing procedures.
Guidance on furnace derating and altitude adjustments.
Illustrates standard gas piping hookups.
Table showing deration steps based on altitude.
Warnings and procedures for converting the furnace to LP gas.
Safety warnings for electrical connections and switch settings.
Guidelines for proper line voltage wiring connections.
Instructions for connecting thermostats and low voltage wiring.
Critical warning about the importance of proper electrical grounding.
Diagram illustrating line voltage field wiring connections.
Diagrams showing various iQ system wiring configurations.
Essential checklist and system setup before initial operation.
Step-by-step instructions for initiating furnace operation.
Procedures for checking and setting the gas input rate.
Checks for correct temperature rise and burner flame characteristics.
Procedure to verify the function of the supply air limit switch.
Describes the sequences for heating and cooling modes.
Explains blower operation modes.
Safety warnings and steps for annual furnace maintenance.
Inspection guidelines for heat exchanger and venting system integrity.
Common issues and checks to perform for furnace operation failures.
Table detailing fault codes indicated by furnace control board LEDs.
Table detailing fault codes indicated by motor control board LEDs.
Illustrates the physical dimensions of the furnace cabinets.
Table providing airflow (CFM) targets for temperature rises.
Table for calculating gas flow rates based on time and meter revolutions.
Table showing gas pipe capacity based on size, length, and gas type.
Table specifying recommended wire gauge and length for thermostat.
Diagram of the variable speed motor control board connections.
Diagram of the modulating furnace control board connections.
Comprehensive diagram showing all furnace electrical connections.
Table listing required clearances for vent terminations.
Illustrates 1-pipe venting and condensate options for upflow furnaces.
Illustrates 2-pipe venting and condensate options for upflow furnaces.
Illustrates 1-pipe venting and condensate options for horizontal furnaces.
Illustrates 2-pipe venting and condensate options for horizontal furnaces.
Diagram showing horizontal venting configuration and support.
Diagram showing vertical venting configuration and support.
Diagram identifying the location of key furnace components.
Checklist for verifying electrical system installation and connections.
Checklist for verifying gas system installation, pressure, and leaks.
Checklist for verifying combustion air supply and venting system integrity.
Includes Proposition 65 notices and installer responsibilities.
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