For upflow/horizontal, horizontal only and downflow induced draft gas furnaces (49 pages) Furnace Rheem CRITERION II Product Information Manual 80.0-82.2% a.f.u.e. downflow gas furnaces; models with input rates from 50,000 to 150,000 btu/hr [15 to 44 kw] (8 pages). Minimum Condensate Drain Pipe Sizing Chart. Slope to be at least 1/8" per foot or 1 percent, that is for every 12" horizontally there must be at least an 1/8" drop vertically. Condensate drain piping to slope a minimum of 1/8″ per every 12″ horizontal Attics or Furred Spaces

Tech Tip 3 HVAC Systems HOW TO Correctly Install Condensate
Tech Tip 3 HVAC Systems HOW TO Correctly Install Condensate
Pin by Chaun D on Hvac maintenance in 2021 Refrigeration
Pin by Chaun D on Hvac maintenance in 2021 Refrigeration
HVAC Condensate drains & pumps installation codes &
HVAC Condensate drains & pumps installation codes &
Condensate Line How to clean and care? Halo Home Watch
Condensate Line How to clean and care? Halo Home Watch
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Condensate Drain Traps & Lines Cleaned on AC and Gas
How
How "not" to install a condensate drain line
InterNACHI Inspection Graphics Library HVAC » Heating » condensation
InterNACHI Inspection Graphics Library HVAC » Heating » condensation
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Efficient Condensate Drainage in HVAC Systems Importance and Functionality
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How to Fix a Clogged Furnace Condensate Drain Line. Phyxter
Heat Pump Condensate Drains GHAC Knowledgebase
Heat Pump Condensate Drains GHAC Knowledgebase
Condensate Drainage Condensate Removal
Condensate Drainage Condensate Removal
Consulting Specifying Engineer Cooling coil condensate system design
Consulting Specifying Engineer Cooling coil condensate system design
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How To Keep Furnace Or HVAC Condensate Line From Freezing
Fundamentals of HVACR Cleaning Condensate Lines
Fundamentals of HVACR Cleaning Condensate Lines
Custom Furnace Condensate Pump
Custom Furnace Condensate Pump
How Does A Condensate Drain Pan Work? Service Champions
How Does A Condensate Drain Pan Work? Service Champions
How to Fix a Clogged Furnace Condensate Drain Line. Phyxter
How to Fix a Clogged Furnace Condensate Drain Line. Phyxter
Your AC Condensate Drain Lines Gary's Quality Plumbing Blog
Your AC Condensate Drain Lines Gary's Quality Plumbing Blog
Attic Ac Unit Condensate Drain Line Diagram
Attic Ac Unit Condensate Drain Line Diagram
How to Replace an AirConditioning System's Condensate Pump Dengarden
How to Replace an AirConditioning System's Condensate Pump Dengarden
Rerouting and Designing a Condensate Drain Discharge on your HVAC
Rerouting and Designing a Condensate Drain Discharge on your HVAC
Furnace Condensate Drain Cleaning Youtube Goodman Furnace Wiring
Furnace Condensate Drain Cleaning Youtube Goodman Furnace Wiring
How Does A Furnace Work? DorMar Heating & Air Conditioning
How Does A Furnace Work? DorMar Heating & Air Conditioning
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A/C System Condensate Drains, Condensate Piping, Condensate Pumps
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What is a Condensate Drain Line and Why It's Important
Condensate drain (CD) air conditioner's drain line (or the condensate
Condensate drain (CD) air conditioner's drain line (or the condensate
Carrier Air Conditioner Condensate Drain at Bruce Lee blog
Carrier Air Conditioner Condensate Drain at Bruce Lee blog
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The Facts About AC Condensate Drain Lines for Attic/Rooftop HVAC
How to Install a Condensate Pump 11 Steps (with Pictures)
How to Install a Condensate Pump 11 Steps (with Pictures)
Condensate drains & pumps Codes & for HVAC Condensate
Condensate drains & pumps Codes & for HVAC Condensate

IMC 307.2.3 states that all HVAC equipment that produces condensate must have either a secondary drain line or a condensate overflow switch, a secondary drain pan with a secondary drain line, a condensate switch, or some combination of these installations should be used to prevent overflow if the primary drain line blocks.. This code includes rooftop units, ductless units, and downflow units.. Commons Problems Related to Condensate Drain Lines. Plugged condensate drain lines can cause several problems in HVAC systems, some of which include: Water Damage: The most common problem caused by a plugged condensate drain line is water damage. If the drain line is blocked, water will overflow the drain pan and spill onto the surrounding areas.