Page 556 - 2018_IRC

HYDRONIC PIPING

PE and PVC pipe shall be chamfered. Pipe ends shall have remain undisturbed until cool. Fittings shall be manufac-
full-bore openings and shall not be undercut. tured in accordance with ASTM F1055.
M2105.8 Joint preparation and installation. Where required M2105.11.3 Stab-type insert fittings. Joint surfaces shall
by Sections M2105.9 through M2105.11, the preparation and be clean and free from moisture. Pipe ends shall be cham-
installation of mechanical and thermoplastic-welded joints fered and inserted into the fittings to full depth. Fittings
shall comply with Sections M2105.8.1 and M2105.8.2. shall be manufactured in accordance with ASTM F1924.
M2105.8.1 Mechanical joints. Mechanical joints shall be M2105.12 Polypropylene (PP) plastic. Joints between PP
installed in accordance with the manufacturer’s instruc- plastic pipe and fittings shall comply with Sections
tions. M2105.12.1 and M2105.12.2.
M2105.8.2 Thermoplastic-welded joints. Joint surfaces M2105.12.1 Heat-fusion joints. Heat-fusion joints for
for thermoplastic-welded joints shall be cleaned by an polypropylene (PP) pipe and tubing joints shall be
approved procedure. Joints shall be welded in accordance installed with socket-type heat-fused polypropylene fit-
with the manufacturer’s instructions. tings, electrofusion polypropylene fittings or by butt
M2105.9 CPVC plastic pipe. Joints between CPVC plastic fusion. Joint surfaces shall be clean and free from mois-
pipe or fittings shall be solvent-cemented in accordance with ture. The joint shall remain undisturbed until cool. Joints
Section P2906.9.1.2. Threaded joints between fittings and shall be made in accordance with ASTM F2389.
CPVC plastic pipe shall be in accordance with Section M2105.12.2 Mechanical and compression sleeve joints.
M2105.9.1. Mechanical and compression sleeve joints shall be installed
M2105.9.1 Threaded joints. Threads shall conform to in accordance with the manufacturer’s instructions.
ASME B1.20.1. The pipe shall be Schedule 80 or heavier M2105.13 Raised temperature polyethylene (PE-RT)
plastic pipe and shall be threaded with dies specifically plastic tubing. Joints between raised temperature polyeth-
designed for plastic pipe. Thread lubricant, pipe-joint com- ylene tubing and fittings shall comply with Sections
pound or tape shall be applied on the male threads only and M2105.13.1 through M2105.13.4. Mechanical joints shall
shall be approved for application on the piping material. comply with Section M2105.8.1.
M2105.10 Cross-linked polyethylene (PEX) plastic tubing. M2105.13.1 Compression-type fittings. Where compres-
Joints between cross-linked polyethylene plastic tubing and fit- sion-type fittings include inserts and ferrules or O-rings,
tings shall comply with Sections M2105.10.1 and M2105.10.2. the fittings shall be installed without omitting the inserts
Mechanical joints shall comply with Section M2105.8.1. and ferrules or O-rings.
M2105.10.1 Compression-type fittings. Where compres- M2105.13.2 PE-RT-to-metal connections. Solder joints
sion-type fittings include inserts and ferrules or O-rings, in a metal pipe shall not occur within 18 inches (457 mm)
the fittings shall be installed without omitting the inserts of a transition from such metal pipe to PE-RT pipe or tub-
and ferrules or O-rings. ing.
M2105.10.2 Plastic-to-metal connections. Solder joints M2105.13.3 Heat-fusion joints. Heat-fusion joints shall
in a metal pipe shall not occur within 18 inches (457 mm) be of the socket-fusion, saddle-fusion or butt-fusion type,
of a transition from such metal pipe to plastic pipe or tub- and shall be joined in accordance with ASTM D2657.
ing. Joint surfaces shall be clean and free from moisture. Joint
M2105.11 Polyethylene plastic pipe and tubing. Joints surfaces shall be heated to melt temperatures and joined.
between polyethylene plastic pipe and tubing or fittings for The joint shall remain undisturbed until cool. Fittings shall
ground-source heat-pump loop systems shall be heat-fusion be manufactured in accordance with ASTM D2683 or
joints complying with Section M2105.11.1, electrofusion ASTM D3261.
joints complying with Section M2105.11.2, or stab-type M2105.13.4 Electrofusion joints. Joints shall be of the
insertion joints complying with Section M2105.11.3. electrofusion type. Joint surfaces shall be clean and free
M2105.11.1 Heat-fusion joints. Joints shall be of the from moisture and scoured to expose virgin resin. Joint
socket-fusion, saddle-fusion or butt-fusion type, and surfaces shall be heated to melt temperatures for the period
joined in accordance with ASTM D2657. Joint surfaces of time specified by the manufacturer and joined. The joint
shall be clean and free from moisture. Joint surfaces shall shall remain undisturbed until cool. Fittings shall be man-
be heated to melt temperatures and joined. The joint shall ufactured in accordance with ASTM F1055.
remain undisturbed until cool. Fittings shall be manufac- M2105.14 PVC plastic pipe. Joints between PVC plastic
tured in accordance with ASTM D2683 or ASTM D3261. pipe or fittings shall be solvent-cemented in accordance with
M2105.11.2 Electrofusion joints. Joints shall be of the Section P2906.9.1.4. Threaded joints between fittings and
electrofusion type. Joint surfaces shall be clean and free PVC plastic pipe shall be in accordance with Section
from moisture, and scoured to expose virgin resin. Joint M2105.9.1.
surfaces shall be heated to melt temperatures for the period M2105.15 Shutoff valves. Shutoff valves shall be installed in
of time specified by the manufacturer. The joint shall ground-source loop piping systems in the locations indicated
in Sections M2105.15.1 through M2105.15.6.

2018 INTERNATIONAL RESIDENTIAL CODE ® 531
Copyrighted © 2017 by, or licensed to, ICC (ALL RIGHTS RESERVED); licensed to UL, LLC pursuant to License Agreement with ICC. No further reproductions authorized or distribution authorized.
ANY UNAUTHROIZED REPRODUCTION OR DISTRIBUTION IS A VIOLATION OF THE FEDERAL COPYRIGHT ACT AND THE LICENSE AGREEMENT; AND SUBJECT TO CIVIL AND CRIMINAL PENALTIES THEREUNDER.