Install Instructions

3
IM-PR 566442 1114 (Design Manual)
1 Principles of Radiant Heating Design
1.1 Codes, standards and green building ...5
1.2 Installation methods ................5
1.3 Insulation .........................9
1.3.1 Residential insulation
recommendations ............11
1.3.2 Commercial insulation
recommendations ............11
1.3.3 Insulation requirements for
Canada ...................13
1.4 Panel coverings ...................14
1.4.1 Hardwoods .................14
1.4.2 Floor surface temperatures ....14
1.4.3 Carpet ....................16
1.4.4 Tile, stone and marble ........17
1.4.5 Concrete ...................17
1.4.6 Laminates ..................18
1.4.7 Resilient surfaces ............18
1.5 Heat load .......................18
1.6 Design temperatures ...............18
1.6.1 Panel surface temperature .....18
1.6.2 Floor surface temperatures ....19
1.6.3 Supply water temperature .....19
1.6.4 Temperature drop ............19
1.7 System documentation and operational
instructions ......................21
1.8 Piping ..........................21
1.8.1 Primary/secondary ...........23
1.8.2 Panel piping ................25
1.8.3 Piping congurations .........27
1.9 Circulator pumps ..................31
1.9.1 Flow rates ..................31
1.9.2 Pressure drop ...............31
1.9.3 Using a pump curve ..........35
1.9.4 Circulator placement relative to the
expansion tank ..............38
1.10 Expansion .......................40
1.10.1 Selecting an expansion tank ...40
1.10.2 PEX expansion compensation ..41
1.11 Freeze protection – glycol mixtures ...46
1.11.1 Selecting the percent glycol
mixture ....................46
1.11.2 Glycol system effects .........46
1.11.2.1 Glycol ow rate ......46
1.11.2.2 Glycol primary piping
sizing .............50
1.11.2.3 Glycol pressure drop ..51
1.11.2.4 Glycol expansion tank
selection ...........55
1.11.3 Glycol system maintenance ....55
1.12 Controlling the system .............55
1.12.1 Fixed temperature ...........56
1.12.2 Radiant oor heating panels. . . .56
1.12.3 Variable temperature .........57
1.12.4 Radiant oor heating panels. . . .57
1.12.5 Flow control ................61
1.12.6 Zoning ....................61
1.12.7 Differential pressure regulation ..61
1.13
Minimum required design information ...67
2 Residential Radiant Heating
Considerations
2.1 Codes and standards ..............68
2.2 System documentation and operational
instructions ......................69
3 Commercial Radiant Heating and Cooling
Considerations
3.1 Codes, standards and green building ..70
3.2 Insulation ........................71
3.3 Heating and cooling load calculations ...73
3.4 Installation methods ...............73
3.5 Commercial radiant heating .........77
3.6 Commercial radiant cooling .........79
3.6.1 Design temperatures .........79
3.6.2 Capacity ...................83
3.6.2.1 Floor coverings ......83
3.6.2.2 Placement of tubing
within the slab .......83
3.6.3 Cooling equipment ...........83
3.6.4 Cooling control strategies .....85
3.7 Combination heating and cooling
considerations ....................86
4 Installation and Startup
4.1 Installation .......................88
4.1.1 Connecting tubing ...........88
4.1.2 Handling and protecting tubing .89
4.1.2.1 Slab joint tube protection ..89
4.1.3 Layout and fastening .........91
4.2 Startup .........................91
4.2.1 Pressure testing and purging ....92
4.2.2 Initial balancing ..............93
4.2.3 Adjusting the high-limit .......94
4.2.4 Considerations for slabs. . . . . . .95
4.2.5 System documentation and
operational instructions .......95