except as modified herein.
2.13.5
Backflow Preventers
The requirements for backflow preventers are specified in Section [15400A
PLUMBING, GENERAL PURPOSE] [15400N PLUMBING SYSTEMS].
2.13.6
Insulation
The requirements for shop and field applied insulation are specified in
Section 15080 THERMAL INSULATION FOR MECHANICAL SYSTEMS.
2.13.7
Controls
The requirements for controls are specified in [Section 15990A TESTING,
ADJUSTING, AND BALANCING OF HVAC SYSTEMS][and][Section 15951 DIRECT DIGITAL
CONTROL FOR HVAC AND OTHER LOCAL BUILDING SYSTEMS] [Section15901N SPACE
TEMPERATURE CONTROL SYSTEMS][and][15910N DIRECT DIGITAL CONTROL SYSTEMS].
PART 3
EXECUTION
3.1
INSTALLATION
Installation shall be as shown and according to the manufacturer's diagrams,
recommendations and manufacturer's installation instructions.
3.1.1
Condensate Drain Lines
Water seals shall be provided in the condensate drain from all [units.]
[units except room [fan-coil units] [and] [coil-induction units]]. The
depth of each seal shall be 50 mm 2 inches plus 0.1 mm for each Pathe
number of inches, measured in water gauge, of the total static pressure
rating of the unit to which the drain is connected. Water seals shall be
constructed of 2 tees and an appropriate U-bend with the open end of each
tee plugged. Pipe cap or plug cleanouts shall be provided where indicated.
Drains indicated to connect to the sanitary waste system shall be
connected by an indirect waste fitting. Air conditioner drain lines shall
be insulated as specified in Section 15080 THERMAL INSULATION FOR
MECHANICAL SYSTEMS.
3.1.2
Equipment and Installation
Provide frames and supports for tanks, compressors, pumps, valves, air
handling units, fans, coils, dampers, and other similar items requiring
supports. Floor mount or ceiling hang air handling units as indicated.
The method of anchoring and fastening shall be as detailed. Set
floor-mounted equipment on not less than 150 mm 6 inch concrete pads or
curbs doweled in place unless otherwise indicated. Concrete foundations
for circulating pumps shall be heavy enough to minimize the intensity of
the vibrations transmitted to the piping and the surrounding structure, as
recommended in writing by the pump manufacturer. In lieu of a concrete pad
foundation, a concrete pedestal block with isolators placed between the
pedestal block and the floor may be provided. The concrete foundation or
concrete pedestal block shall be of a mass not less than three times the
weight of the components to be supported. Lines connected to the pump
mounted on pedestal blocks shall be provided with flexible connectors.
Furnish foundation drawings, bolt-setting information, and foundation bolts
prior to concrete foundation construction for all equipment indicated or
required to have concrete foundations. Concrete for foundations shall be
SECTION 15895
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