equipment efficiencies are shown on the drawings.
If the efficiencies are shown on the drawings,
reference the applicable ARI standard. The
following is a list of appropriate minimum full load
and part load ratings for absorption chillers.
These values or higher values will be entered into
the specification where indicated. The designer
should contact manufacturers to determine what is
available before specifying full and part load
values.
Full Load
IPLV
(*COP)
(*COP)
Single Effect (Indirect Fired):
All Capacities
0.65
0.65
Double Effect (Indirect Fired):
All Capacities
1.20
1.25
Double Effect (Direct Fired):
All Capacities
0.90
0.90
* - Units are dimensionless (output / input)
Indicate the type of water boxes (standard or
marine) required for the evaporator, the absorber,
and the condenser on the drawings. Note that some
manufacturers do not offer marine water boxes for
each connection.
**************************************************************************
2.7.1
General
Chiller shall be constructed and rated in accordance with ARI 560 and shall
bear the appropriate underwriter's laboratories (UL) label. [Chiller shall
have a minimum cooling Coefficient of Performance (COP) of [_____] at full
load conditions in accordance with ARI 560. Chiller shall have a minimum
cooling COP of [_____] at part load conditions in accordance with ARI 560.]
Chiller shall be the [single-stage] [two-stage] hermetic, water-cooled
type design. Chiller shall be [indirectly-fired with [steam] [hot water]]
[directly-fired with a [single] [dual] fuel burner]. [For direct-fired
units, ratings for cooling capacity, fuel consumption, and COP shall be
based on the higher heating value (HHV) or the specific type of fuel
utilized.]
2.7.2
Assembly
Unless necessary for delivery purposes, chiller shall be assembled,
leak-tested, charged, and adjusted at the factory. In lieu of delivery
constraints, a chiller may be assembled, leak-tested, charged, and adjusted
at the job site by a factory representative. Unit components delivered
separately shall be sealed and charged with a nitrogen holding charge.
Unit assembly shall be completed in strict accordance with manufacturer's
recommendations.
2.7.3
Operation
Chiller shall operate within capacity range and speed recommended by the
SECTION 15620A
Page 37
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