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Reznor® series model UDBS
gas-fired separated combustion unit heaters are available in 14 sizes
ranging from 30,000 to 400,000 BTUH gas input. Model UDBS heaters are
designed for 82-83% thermal efficiency and are approved for
commercial/industrial installations in the United States and Canada by
the Canadian Standards Association (CSA).
Reznor® V3 series unit heaters have a refreshing new appearance with
a glossy white cabinet finish and less visible hardware. Each size
cabinet is easily suspended from four suspensionpoints. The low voltage
terminal strip on the outside of the cabinet makes connecting control
wiring easy with no panels to remove. The addition of a "G" terminal to
the low voltage strip, along with the new design of the circuit board,
allows for blower only operation (without adding relays). All units
have a factory installed gas line nipple to the exterior of the cabinet
for easy gas service connection. The preeminent new internal feature is
the TCORE2 ® heat exchanger and single burner combustion system. Other
standard features include a single-stage gas valve, multi-try direct
spark ignition with 100% lockout, pressure switch to verify vent flow,
resiliently isolated venter motor, venter wheel with improved housing, a
high temperature limit control, interlock door switch, and a built-in
disconnect switch. Sizes 30-125 are equipped with a centrifugal blower
and direct drive motor with multispeed taps. Sizes 30 and 45 are
capable of handling up to .5" w.c. of external static pressure; sizes
60-125 will handle up to .75" w.c. of external static pressure. Sizes
150-400 are equipped with a centrifugal blower with an adjustable belt
drive and motor. All units are designed for use with optional 30° and
60° downturn nozzles with horizontal and vertical louvers. Operation is
controlled through an integrated circuit board. The circuit board
monitors heater operation and has LED diagnostic indicator lights to
identify abnormalities in control functions.
The 1ST ever separated combustion system in the
commercial/industrial heating industry was introduced on a Reznor heater
in the 1960’s, and that proven technology is continued in this new
separated combustion product. Model UDBS separated combustion units
require installation of a specially designed combustion air/vent system
including the unique concentric adapter box that allows for only one
building penetration for both the vent and combustion air.
The new V3 Series unit heaters are designed to provide all the
features you expect in a Reznor heater plus improved efficiency, easier
installation and a new look ~ both inside and out. |
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- Certified for
commercial/industrial heating applications
- 82-83% thermal efficient ~
TOP in its class!
- 45-75°F rise range - sizes
30-350 50-80°F Rise range - Size 400
- NEW TCORE2 ® design
titanium stabilized aluminized steel heat exchanger (patent pending)
- NEW TCORE2 ® single burner
combustion system including a one-piece burner assembly (patent pending)
- 115/1/60 supply voltage
- 115 volt open dripproof
blower motor with internal overload protection - sizes 30-125
- 115 volt open dripproof
blower motor with internal overloads and definite purpose motor
contactor - sizes 150-400
- Direct drive blower with
multispeed taps - sizes 30-125
- Adjustable belt drive
blower - sizes 150-400
- Transformer for 24-volt
controls
- Integrated circuit board
with diagnostic indicator lights
- Multi-try direct ignition
with 100% lockout
- Blower relay (included on
the circuit board) |
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- Natural or propane
single-stage gas valve (field adjustable for operation to 6,000 ft
elevation)
- Vibration/noise isolated
venter motors
- Sealed compartment houses
all electrical components
- 4-pt Suspension
- Built-in disconnect switch
- sizes 30-125, 20A@ 115V rating; sizes 150-400 30A @ 115V rating
- External terminal strip
for 24-volt wiring
- Sealed junction box for
supply wiring
- External gas connection
- Fully gasketed door panel
with safety door switch
- Improved cabinet design with less visible
hardware and a NEW Reznor appearance |
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- Equipped for propane gas
- Two-stage (70% low fire)
natural or propane gas valve
- 409 or 316 stainless steel
heat exchanger
- 208 and 230 single phase
voltage; 208, 230, 480, and 575 three phase voltage - sizes 150-400
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- Adjustable belt drive and
motor for up to .5” w.c. external static pressure - sizes 150-400
- Totally enclosed blower
motor - sizes 150-400
- Belt and blower guards
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- *Horizontal or vertical
combustion air/vent kit including concentric adapter
- Thermostat
- Thermostat guard with
locking cover
- Vertical louvers ~ new
design
- Downturn nozzle (30° or
60° deflection, with and without vertical louvers) ~ new design
- Gas conversion kits
- Manual shutoff valves
- High altitude kits (above
6,000 ft to 9,000 ft) |
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- Master/slave controls for
zoning up to six units
- Duct flange
- Polytube adapters
- Blower and belt guards
- Hanger kits for 1" pipe
- Stepdown transformer for 230 or 460
voltage - sizes 30-125
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