Radiant Floor Heat | Healthy Heating

Online educational resource on achieving indoor environmental quality with radiant based HVAC systems

NOTE: The Architectural Details web page is graphic intensive. Slow web servers and or slow computers will experience digital constipation! If you are predisposed to frustration and rage we suggest navigating to our less intensive web pages. Click here to visit Architectural Details for Cold Climate Construction

Benchmark of Quality

Masters of Design

A great source for "benchmark services" is industry specialist, John Siegenthaler, P.E. of Appropriate Designs. John is the author of Modern Hydronics and publishes in most industry magazines.

NRDC is the National Radiant Design Center. The link will take you to a slide show of a typical NRDC architectural/engineering document. You can use this as a benchmark of quality. Contact NRDC.

Typical Sub Floor System Tube Installation
Photo Credit: NRDC

Typical Poured Floor System Tube Installation
Photo Credit: NRDC

Use NRDC as one of your design benchmark

Mechanical Schematics: For additional support visit our visitor services page.

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Symbols
Symbols for Radiant Based HVAC Systems

The Symbols used in the drawings below are based on:

ANSI/ASHRAE Standard 134-2005, Graphic Symbols for Heating, Ventilating, Air-Conditioning, and Refrigerating Systems

Copyright (c) American Society of Heating, Refrigerating and Air-Conditioning Engineers. This document can be purchased at the ASHRAE bookstore...click here.

Boiler Systems
Single Boiler Piped In Direct Return
Single Boiler Piped in Primary/secondary
Dual Boilers Piped in Primary/Secondary
Dual Boiler Piped in Reverse Return
Dual Boiler Piped in Equal Length
Multiple Boiler Piping Schematic
Indirect/Direct Fired Domestic Water w/ Boiler & Brazed Plate Heat Exchanger

Heat Pumps
Ground Source Heat Pump w/ Three Zones of Radiant

Control Points for Radiant Based HVAC Systems
Four Pipe Heating & Cooling with Ventilation, (de) Humidification and Heat Recovery
Two Pipe Heating & Cooling with Ventilation, (de) Humidification and Heat Recovery
Two Pipe System, Heating & Cooling with Radiant Ceiling Panels

Controls for Combined Air and Water Systems

Two Pipe System, Heating with Fan/Coils and Domestic Hot Water

Radiant Floor Heating with Make Up Air Unit
Hybrid System 1, Radiant Heating with Make Up Air

Hybrid System 2, Radiant Heating with Make Up Air and 2nd Stage Heat

Hybrid System 3, Radiant Heating with Make Up Air and Zoned Reheat

Hybrid System 4, Radiant Cooling with Make Up Air and 2nd Stage Cooling

Radiant Mechanical Assemblies
Common Radiant Floor Cooling and Heating Manifold Configurations
Common Methods of Regulating Fluid Temperatures in Radiant Systems
Single Zone of Radiant Floor Heating with 3 Way Thermostatic Valves
Two Zones of Radiant Floor Heating with 3 Way and 4 Way Mixing Valves
Three Zones of Radiant Floor Heating with Two Way Injection Valve
Tube Patterns
Retrofitting a Floor Heating Zone to an Existing Baseboard Heating System
Garage Heating with Freeze Protection, Two Way Injection Valve

Snow Melt Mechanical Assemblies
Snow Melt w/ Heat Exchanger & Glycol Make Up Tank

Pool and Spa Heating Mechanical Assemblies
Pool Heat w/ Heat Exchanger, Pump and Filter
Indoor Pool Heating, Ventilation, Radiant Floors

Heating with Solar, Wood, Alternative Energy, Mechanical Assemblies
Multi Fuel Heat Sources on High and Low Temp Heating System w/o wiring
Multi Fuel Heat Sources on High and Low Temp Heating System

Zoning Methods
Zoning with Circulators
Zoning with Control Valves
Side by Side Comparison

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