Specifications

ACI/Frangkiser Hutchens Architects 4-07058
Liberty "North" Second High School
Liberty Public School District #53
Building Construction Bid Set
FOOD SERVICE EQUIPMENT 11400-13
D. "Refrigeration Installation" shall include uncrating and
setting-in-place of compressors and accessories, installation
of refrigerant lines and refrigeration accessories, initial
charge of refrigerant for each system, system(s) start-up,
testing and temperature adjustment.
E. Refrigerant line sizes shall be of proper size to operate units,
at temperatures required. Condensor manufacturer shall size
refrigerant lines to operate units at the temperatures required.
Refrigerant piping to remote compressors shall be Type "L"
copper, labeled ACR, with wrought copper fittings and sweat
solder joints. Make connections with silver solder having
melting point of not less than 1000
o
F. Run and test
refrigeration systems and piping prior to application of
insulation. After successfully testing, evacuate system and
charge per manufacturers recommendations. Insulate suction
lines per applicable code requirements for composite smoke and
fire hazard. Insulation shall be 3/4" "Armaflex AP", black,
flexible, elastomeric tubing with flame spread rating of 25 or
less and smoke developed rating of 50 or less. Cover fittings
with "Armaflex AP" blanket and wrap with vapor proof tape.
"Armaflex" blanket shall be neatly applied with no buckles or
gaps using the manufacturers recommended adhesive and
installation procedures. Seal seams weather tight with
longitudinal seams at bottom of pipe. Protect "Armaflex AP"
installed outside the building with PVC sleeving sealed with
vapor barrier adhesive and strapped at 18" O.C. with
non-removable plastic strapping. Support exterior vertical and
horizontal refrigerant lines at 6'-0" O.C. maximum with
adjustable hangers and supports secured to the building
structure to prevent movement. Exterior piping routed tight
to exterior vertical surfaces; maximum of 6" above horizontal
surfaces. Support interior refrigerant lines at maximum
6'-0" O.C. horizontally and 10'-0" O.C. vertically with
adjustable hangers and supports secured to the building
structure to prevent movement. Insulate hangers and supports
from direct contact with cold surfaces using 1" plastic foam
inserts, premolded pipe insulation or wood blocking of same
insulating value as adjacent insulation. Protect insulation
with insulation shields supporting the lower 180
o
of pipe
insulation.
F. Provide initial charge of refrigerant, (type as hereinafter