3.1.2.2
Measurements
Determine and establish measurements for piping at the job site and
accurately cut pipe and tubing lengths accordingly. Where possible,
install full pipe lengths. Do not use couplings to join random lengths.
3.1.2.3
Cleaning
Thoroughly clean interior of water piping before joining by blowing clear
with either steam or compressed air. Maintain cleanliness of piping
throughout installation. Provide caps or plugs on ends of cleaned piping
as necessary to maintain cleanliness.
3.1.2.4
Panel Connections to Headers
Connect panels to top and bottom headers with soft-drawn long bend "S" or
"U" copper tubes brazed with 15-percent silver solder. Provide tube bender
only. Hand-formed tubing will not be acceptable. Install bottom headers
behind the panels to protect the header insulation from abuse. For panels
with internal headers, provide copper couplings and soldering.
3.1.2.5
Header Thermal Expansion and Contraction
Install slip tube or bellows type expansion joints. Limit thermal
expansion of collector headers to [6] [_____] mm for 93 degrees C [1/4]
[_____] inch for 200 degrees F maximum rise.
3.1.2.6
Provide flanged joints for making flanged connections to flanged pumps and
other flanged piping components. Install joints so that flanged faces bear
uniformly. Engage bolts so that there is complete threading through the
nuts and tighten until bolts are equally torqued.
3.1.2.7
Sleeves
Provide schedule 10 galvanized steel sleeves for pipe and tubing passing
through floors, roofs, walls and partitions of either concrete or masonry
construction, except that sleeves are not required for floor slabs on
grade. After piping has been installed, pack oakum into the space between
the pipe or tubing and the sleeve and seal both ends with insulating cement.
3.1.2.8
Flashing
[Section 07600, "Flashing and Sheet Metal."] Provide watertight flashing
for pipe and tubing extending through the roof.
3.1.2.9
Escutcheons
Provide chrome plated steel escutcheons for uninsulated pipe and tubing
passing through floors, walls and ceilings.
3.1.2.10
Drain Lines
Provide drain lines from air vents and relief valves to the nearest [roof
drains] [floor drains] [disposal points as directed].
SECTION 13610N
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