Building Operating Management September 2011 - FacilitiesNet

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buildingoperatingmanagement
SEPTEMBER 2011
a
❯❯a. MODINE Atherion packaged ventilation system is available
in cooling capacities of 15, 20, 26 and 30 tons. Meets ASHRAE
90.1 and 62 standards for effi ciency and indoor air quality. Features
include tandem digital scroll compressor, two-inch double-wall
construction, full-length hinged access doors and factory-installed
microprocessor controls. Optional energy recovery ventilator. Uses
MERV16 fi lters. MODINE: CIRCLE #240
b
❯❯b. TRANE RENTAL SERVICES offers cooling units for
temporary applications ranging from 10 ton to 1,000 ton cooling
units, 36 kW to 1.4 mW of power generation, and 25 hp to 300 hp
of compressed air. Can be used in scheduled or emergency situations.
Generators, skid-mounted pumps and fl atbed trailers are
also available. TRANE RENTAL SERVICES: CIRCLE #242
c
❯❯c. HONEYWELL Excel 800 controller has double the
memory of the Excel 500 controller and uses the same application
programs. Supports EBI, SymmetrE and ACSELON building
management interfaces. Hot-swappable replacement of I/O
modules. CPU automatically detects and commissions replacement
modules. Housings can be separated by up to 120 feet.
HONEYWELL: CIRCLE #243
❯❯ WEIL-MCLAIN Ultra commercial boilers are available in
550 and 750 MBH. Boilers offer 93.9 percent thermal effi ciency
and 94 percent combustion effi ciency. Low NOx certifi ed. CSD-1
compliant. PVC venting for direct vent and exhaust. Turn down
ratio of 5:1. Includes 11 pre-set applications and text LCD display.
Integrated multiple boiler control. (Not pictured)
WEIL-MCLAIN: CIRCLE #241
DE-SCALE
WITHOUT FAIL.
The Goodway GDS-15-PH removes tough
scale build-up quickly, safely and easily.
GDS-15-PH
Use with Goodway Scale-Break ®
solution to dissolve calcium and
lime on contact.
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descaler
Increase heat exchanger efficiency by
eliminating energy-robbing scale
buildup quickly, easily and safely. Our
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to reduce cleaning
time with a hands-free system
to dissolve scale and balance
pH levels. Clean the better way.
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❯❯ GOODWAY CTV-1501 TowerVac removes cooling tower
bacteria and micro-organisms without requiring cooling system
shutdown or draining. Adjustable fl ow control can produce
recovery rate of up to 60 GPM. Comes with 15-foot inlet hose,
25-foot outlet hose, 24-inch wand, 36-inch extension tub and
6-inch gulper tool. Centrifugal pump, 1 1 ⁄2-HP engine. (Not pictured)
GOODWAY: CIRCLE #257
nectivity with our EMS easier,” he says. “As the fleet is slowly
replaced/upgraded, we’ll have to revisit the replacement plan,
as the equipment ‘should’ be in greater shape, and last longer,
so replacing them one off as needed will likely make more fiscal
sense, as we can squeeze more life out of each unit.”
Even if you’re not replacing multiple units, the day will
come for an upgrade.
“There’s usually a point in time where you realize you
need to do something. One of the issues is efficiency. When
you’ve got 40-year-old equipment, it’s not going to be as efficient
as modern-day equipment,” says Cogdill.
But timing doesn’t just mean the equipment’s lifespan.
The time of year plays a big part as well.
Jeff McCauley, engineering manager at Two Shell Plaza,
points out that summer in Houston is not conducive to
HVAC work. The way Hines has done it is to start work on
the cooling equipment in the fall and have it completed,
including commissioning, by March or April at the latest.
“With our climate here, it has to be done during the cooler
months,” McCauley says. “This could not possibly work
during the summertime.”
▲ FREE INFO: Circle 464