40 • OIL
&
ENERGY
Products
Products
CARRIER INTRODUCES COMFORT SERIES
ENERGY RECOVERY VENTILATOR
Carrier’s new Comfort Series Energy
Recovery Ventilator (ERV) represents an
advancement in home ventilation through
the use of a unique two-duct connection.
Boasting simple installation and compact
configuration, the unit also maintains energy
efficiency by transferring heat, or energy,
from outgoing air to fresh, incoming air.
The Comfort Series ERV leverages a
streamlined, two-duct connection to offer
a more straightforward installation process
than traditional four-duct technology.
In addition, the Comfort Series ERV does
not require a separate wall control, allowing
for easy integration into existing home sys-
tems. The unit’s small cabinet dimensions
make the product more compact than others
on the market, a benefit for today’s newly
constructed homes. Contractors can simply
connect the unit to the home’s furnace or
the ductwork, eliminating the need to make
additional room for a bulky four-duct ERV
unit and its costly duct connections.
BOSCH INTRODUCES TWO NEW GREENSTAR
BOILER MODELS WITH NEW VENTING OPTIONS
Bosch Thermotechnology has intro-
duced two new gas condensing Greenstar
models for residential applications with
AFUE rating of 95%: the Greenstar Combi
131 for space heating and hot water at up
to 3.2 GPM and the Greenstar 79 for space
heating.
Both wall-mounted units are available
with new venting options from Bosch:
concentric up and out venting and polypro-
SelfSensing ProBalance pumps can be
run in constant flow mode for chiller/boiler
pumps (primary), system curve mode for
variable flow pumps (secondary), and
constant pressure mode for booster pumps.
All three modes reduce energy consump-
tion. By slowing pump RPMs, pump life is
increased.
ProBalance pinpoints true system resis-
tance without inducing false head, balancing
internally and automatically. This means
lower installed cost, no errors in setpoint,
a simplified construction schedule and no
risk of sensor failure. The pumps include
automatic alerts (with optional shutdown)
for no-flow, dry-run and end-of-curve
operation, and are electronically protected
for overload and locked rotor conditions.
SelfSensing SKV pumps are available in
sizes from1.5 hp to 10 hp. The SKS line is
available from 1.5 hp to 60 hp. Models up
to 600 hp will be available next year.
BERGQUIST OFFERS NEW MEC RESIDENTIAL
PROPANE REGULATORS
Bergquist, Inc. recently announced it
is offering Marshall Excelsior Co.’s (MEC)
new Excela-Flo residential regulators. The
regulators mark MEC’s introduction into
the residential propane regulator market.
The Excela-Flo regulators possess several
key features for optimal performance and
installation, including a round flange for
evenly distributed diaphragm compression,
large wrench flats, stainless steel lever
design, and a tear-off data label for record
keeping. MEC’s new residential regulators
pylene twin pipe for installation flexibility.
The up and out venting option kit consists
of an appliance adaptor, a 90° elbow and a
telescopic termination that accommodates
varying wall thicknesses.
Greenstar wall-mounted boilers feature
ultra-efficient condensing technology.
With a hydronic manifold and three-
speed integral pump, they can be installed
more quickly. For more information and
specification data on the new models and
the entire Greenstar family, visit www.
boschheatingandcooling.com/Greenstar.
TACO INTRODUCES
THE SELFSENSING PUMPS WITH
PROBALANCE
The Taco SelfSensing Series with
ProBalance
™
integrates Taco KV or KS
pumps with a variable frequency drive.
SelfSensing ProBalance pumps allow the
installer to accomplish easy do-it-yourself
system balancing for both constant flow
central plant applications and variable flow
building distribution applications. The
system greatly reduces balancing contractor
costs at commissioning or start-up.
Pump performance curves are embedded
in the memory of the speed controller.
During operation, pump power and speed
are monitored, enabling the controller to
establish the hydraulic performance and
position in the pump’s head-flow character-
istic. This enables the pump to continuously
identify required head and flow at any point,
providing accurate pressure control without
the need for external sensor feedback.
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