recommended by the compressor manufacturer.
3.1.10
Accumulator
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NOTE: Suction line accumulator should be included
under certain split system applications, such as
having extended refrigerant lines, 15 m (50 feet) or
longer. If accumulator is not used then delete this
paragraph.
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Accumulators shall be provided in the suction line to each compressor.
3.1.11
Flexible Pipe Connectors
Connectors shall be installed perpendicular to line of motion being
isolated. Piping for equipment with bidirectional motion shall be fitted
with two flexible connectors, in perpendicular planes. Reinforced
elastomer flexible connectors shall be installed in accordance with
manufacturer's instructions. Piping guides and restraints related to
flexible connectors shall be provided as required.
3.1.12
Temperature Gauges
Temperature gauges shall be located specifically on, but not limited to the
following: [the sensing element of each automatic temperature control
device where a thermometer is not an integral part thereof] [the liquid
line leaving a receiver] [and] [the suction line at each evaporator or
liquid cooler]. Thermal wells for insertion thermometers and thermostats
shall extend beyond thermal insulation surface not less than 25 mm 1 inch.
3.1.13
Pipe Hangers, Inserts, and Supports
Pipe hangers, inserts, and supports shall conform to MSS SP-58 and MSS SP-69,
except as modified herein. Pipe hanger types 5, 12, and 26 shall not be
used. Hangers used to support piping 50 mm (2 inches) 2 inches and larger
shall be fabricated to permit adequate adjustment after erection while
still supporting the load. Piping subjected to vertical movement, when
operating temperatures exceed ambient temperatures, shall be supported by
variable spring hangers and supports or by constant support hangers.
3.1.13.1
Hangers
Type 3 shall not be used on insulated piping. Type 24 may be used only on
trapeze hanger systems or on fabricated frames.
3.1.13.2
Inserts
Type 18 inserts shall be secured to concrete forms before concrete is
placed. Continuous inserts which allow more adjustments may be used if
they otherwise meet the requirements for Type 18 inserts.
3.1.13.3
C-Clamps
Type 19 and 23 C-clamps shall be torqued per MSS SP-69 and have both
locknuts and retaining devices, furnished by the manufacturer.
Field-fabricated C-clamp bodies or retaining devices are not acceptable.
SECTION 15182
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