2.13.3.2
Coating Coil Exteriors
One coat of the wash primer component shall be applied by flooding. Two
coats of the pigmented base component shall be applied by immersion or
flooding. Two coats of the clear top (non-pigmented) component shall be
applied by immersion or flooding, with exception of the final coat which
may be applied by spraying.
2.13.3.3
Coating Components
a.
Wash Primer. The wash primer component shall be composed of a
combination of a polyvinyl butyral and a heat hardening phenolic
resin. The weight per L gallon shall be between 0.84 kg/L 7.0
lbs./gallon minimum and 0.89 kg/L 7.4 lbs./gallon maximum.
b.
Pigmented Base. The pigmented base component shall be applied to
a dry film thickness of 0.102 to 0.152 mm 0.004 to 0.006 inch.
The pigmented base shall consist of heat hardening phenolic
resins, suitable pigments of the earth type, and softening agents
and shall not contain drying oils or cellulose material. The
weight shall be between 1.2 kg/L 10.3 lbs./gallon minimum and 1.3
kg/L 10.7 lbs./gallon maximum. The non-volatile solids content
shall be between 60 percent minimum and 64 percent maximum by
weight.
c.
Clear Top. The clear top (non-pigmented) component shall be
applied until the dry film thickness of the total coating system
is between 0.127 and 0.178 mm 0.005 and 0.007 inch. The clear
non-pigmented top coat shall have a weight of between 1.0 kg/L
8.65 lbs./gallon minimum and 1.1 kg/L 8.95 lbs./gallon maximum.
The non-volatile solids content shall be between 48 percent
minimum and 52 percent maximum by weight.
2.14
HOT WATER STORAGE TANKS
Hot water storage tanks shall be the construction of one manufacturer, ASME
stamped for the working pressure, and shall have the National Board (ASME)
registration. The tank shall be cement-lined or glass-lined steel type in
accordance with AWWA D100. The heat loss shall conform to Table III, as
determined by the requirements of ASHRAE 90.1. Storage tank capacity shall
be as shown. Tanks shall be equipped with a pressure gauge 155 mm 6 inch
minimum diameter face. Insulation shall be as specified in Section 15080A
THERMAL INSULATION FOR MECHANICAL SYSTEMS.
2.15
PUMPS
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NOTE: Designer will indicate location, sizes,
horsepower, and capacities of equipment on drawings.
Provide duplex pumps if discharge capacity is
greater than 94.6 liters per min. (25 gpm) and total
head is at least 6 meters (20 feet).
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2.15.1
Sump Pumps
Sump pumps shall be of capacities indicated. The pumps shall be of the
automatic, electric motor driven, submerged type, complete with necessary
SECTION 15405A
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