Specifications
Specification Value
MH Fluid Cooler —
Specifications: Base
10
3.0 Performance Warranty:
3.1 CTI Certification notwithstanding, the fluid
cooler manufacturer shall guarantee that
the fluid cooler supplied will meet the
specified performance conditions when
the fluid cooler is installed according to
plans. If, because of a suspected ther-
mal performance deficiency, the owner
chooses to conduct an on-site thermal
performance test under the supervision
of a qualified, disinterested third party in
accordance with CTI or ASME standards
during the first year of operation; and if
the fluid cooler fails to perform within
the limits of test tolerance; then the fluid
cooler manufacturer will pay for the cost
of the test and will make such corrections
as are appropriate and agreeable to the
owner to compensate for the perfor-
mance deficiency.
4.0 Coil:
4.1 Coil(s) shall consist of fully welded box
headers with serpentine tube circuits and
shall be hot-dip galvanized after fabrica-
tion. The coil(s) shall be designed for free
drainages of fluid at shutdown. Minimum
design operating pressure shall be 150
psi. Coil(s) shall be warranted against any
failure caused by defects in materials and
workmanship for a period of eighteen
(18) months from the date of shipment.
5.0 Design Loading:
5.1 The structure and anchorage shall be
designed to withstand a wind load of
30 psf while operating. The fluid cooler
shall be designed to withstand shipping
and hoisting loads of 2g horizontal or
3g vertical. The fan deck and hot water
basin covers on doubleflow models shall
be designed for 50 psf live load or a 200
lb concentrated load. Guardrails, where
specified, shall be capable of withstand-
ing a 200 lb concentrated live load in any
direction, and shall be designed in accor-
dance with OSHA guidelines.
■ However, CTI certification alone is not sufficient to assure you that the fluid
cooler will perform satisfactorily in your situation. Certification is established
under relatively controlled conditions, and fluid coolers seldom operate under
such ideal circumstances. They are affected by nearby structures, machinery,
enclosures, effluent from other sources, etc. Responsible and knowledgeable
bidders will take such site-specific effects into consideration in selecting the
fluid cooler—but the specifier must insist by the written specification that the
designer/manufacturer guarantee this “real world” performance. Any reluctance
on the part of the bidder should cause you some concern.
■ The MH Fluid Cooler coil is
suitable for cooling water, oils,
and other fluids compatible with
carbon steel in a closed, pressurized
system. Each coil is constructed of all-prime
surface, continuous steel tubing, formed into a
serpentine shape and welded into an assembly. The
complete assembly is then hot-dip galvanized after fabri-
cation. Tubes are sloped to provide free drainage when vented.
■ The indicated design values are the minimum allowables under accepted
design standards. They give you assurance that the fluid cooler can be shipped,
handled, hoisted—and ultimately operated in a normal fluid cooler environment.
Most MH Fluid Cooler models will withstand significantly higher wind and seis-
mic loads. If your geographic location dictates higher wind load or seismic load
values, please make the appropriate changes, after discussion with your Marley
sales representative.
(44 paginas)
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