UDZ Submittal

ManualsBrandsReznor ManualsHeatingUDZ Gas Fired Unit Heater, Separated Combustion, Low Static Axial Fan, NG, Aluminized Heat Exchanger, Vertical Roof Vent - 105,000 BTU

TECHNICAL

SPECIFICATIONS

• Sizes 30-400 MBTUH certiﬁed for commercial/industrial

heating application

• Sizes 30-125 MBTUH carry an additional approval for use in

residential garage/workshop heating applications

• 50-60°F Rise range

• Integrated circuit board with 7 segment display

• External status indicating LED

• Hinged door with ¼ turn latch

• Improved cabinet design with removeable front face and two

tone white and black powder paint.

• Reznor logo embossed on bottom of unit

• Tcore2 titanium stabilized aluminized steel heat exchanger

• Patented single burner combustion system including a one-

piece burner assembly

• Built-in disconnect switch (20A @ 115V Rating)

• 115V, 1 phase, 60 Hz Supply voltage

• 115 Volt open fan motor with internal overload protection

• Transformer for 24-volt controls

• Sealed control compartment houses all electrical

components

• Multi-try direct spark ignition with timed lockout

• Fan relay (included on the circuit board)

• Single-stage natural gas valve (ﬁeld adjustable for operation

to 9,000 ft. elevation)*

• Vibration/noise isolated fan and venter motors ~ designed

for low noise operation

• 2-pt and 4-pt Suspension ~ standard on all sizes

• External terminal strip for 24-volt wiring

• External gas pipe connection

• Sealed junction box for supply wiring

• Full fan guard

• Built-in disconnect switch (20A @ 115V Rating)

• Single-stage propane gas valve (ﬁeld adjustable for

operation to 9,000 ft.)*

• Two-stage gas valve (sizes 60-400)

• 409 or 316 stainless steel heat exchangers

• Totally enclosed fan motor (sizes 30-400)

• Horizontal or vertical combustion air/vent kit including

concentric adapter

• Thermostat

• Thermostat guard with locking cover

• Integrated vertical louvers

• Integrated 30° & 60° downturn nozzles

• Gas conversion kits (natural and propane)

• Primary/secondary controls for zoning up to six units

• Ceiling suspension kit - Sizes 30-125

• Hanger kits for 1” pipe

• Stepdown transformer (for 208/115, 230/115 or 460/115

supply voltage)

UDZ Series

Reznor® Model UDZ gas-ﬁred unit heaters are available in 14 sizes

ranging from 30,000 to 400,000 BTUH gas input. Model UDZ heaters

are approved for installation in the United States and Canada by ETL.

Each size cabinet is easily suspended from either 2 or 4 suspension

points. Or, an optional hanger kit for Sizes 30-125 allows for ceiling

mounting. 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 strip, along with the new design of the

circuit board, allows for fan only operation (without adding relays).

Reznor model UDZ unit heaters offer a sleek design sure to complement

any space. The UDZ features a two-tone black and white powder coated,

scratch-resistant paint scheme with a single red louver. Each unit has

clean rounded corners and edges with no visible screws or fasteners, and

the bottom is embossed with the Reznor logo. Model UDZ unit heaters

provide the same superior performance customers have relied on for

more than 100 years along with added features that make servicing

the unit easier, installation safer and improve monitoring capabilities.

FEATURES and BENEFITS

OPTIONAL FEATURES

Separated Combustion, Low Static Axial

Fan Commercial/Industrial Unit Heaters

82 - 83% Thermal Efﬁciency

*Note: Pressure switch change required for installations above 6,000 ft.

Summary of content (8 pages)

PAGE 1
TECHNICAL SPECIFICATIONS UDZ Series Separated Combustion, Low Static Axial Fan Commercial/Industrial Unit Heaters 82 - 83% Thermal Efficiency Reznor® Model UDZ gas-fired unit heaters are available in 14 sizes ranging from 30,000 to 400,000 BTUH gas input. Model UDZ heaters are approved for installation in the United States and Canada by ETL. Each size cabinet is easily suspended from either 2 or 4 suspension points. Or, an optional hanger kit for Sizes 30-125 allows for ceiling mounting.
PAGE 2
MODEL IDENTIFICATION CODES U D Z 150 Unit Heater D - 82-83% Axial Fan B - 82-83% Blower Fan E - 93% Axial X - Power Vented Z - Seperated Combustion 2 Input Heating Capacity 30 45 60 75 100 125 150 175 200 225 250 300 350 400
PAGE 3
TECHNICAL DATA Size 30 45 60 75 100 125 BTUH 30,000 45,000 60,000 75,000 105,000 120,000 kw/h 8.8 13.2 17.6 22.0 30.8 35.2 82 83 83 83 83 83 Output Heating Capacity C BTUH 24,600 37,350 49,800 62,250 87,150 99,600 kw/h 7.2 10.9 14.6 18.2 25.5 29.
PAGE 4
TECHNICAL DATA (Continued) Size 150 175 200 225 250 300 350 400 BTUH 150,000 175,000 200,000 225,000 250,000 300,000 350,000 400,000 kw/h 44.0 51.3 58.6 65.9 73.3 87.9 (102.6) (117.2) 83 83 83 83 83 83 83 83 Output Heating Capacity C BTUH 124,500 145,250 166,000 186,750 207,500 249,000 290,500 332,000 kw/h 36.5 42.6 48.7 54.7 60.8 73.0 85.1 97.
PAGE 5
DIMENSIONS Size (in) A 30, 45 13 3/4 100 125 150, 175, 200 225, 250 300, 350, 400 26 1/8 30 A B C - 75 100 125 349 425 8 11/16 9 5/8 48 7/16 23 40 48 29/32 D 351 629 511 225,250 664 867 533 E 152 831 UNIT SIZE 810 030, 045 649 1041 100 584 762 M 125 1016 1243 N A 221 13 3/4 (349) 16 3/4 389 (425) 244 24 3/4 (629) 20 1/8 (511) 433 26 1/8 225,250 (664) 1/8 300,350,400 34 (867) N P Q R S 3 11/32 17 3/8 1 9/16 4 9/32 13 9 9/16 8 29/32 8 5/16 H 5 3/8 9 11 1
PAGE 6
THROW/FLOOR COVERAGE Height measured from the floor to the bottom of the unit heater. Point where heated air from the heater reaches the floor. Point where heated air tends to rise from the floor. Z Point where the air velocity drops below 50 feet per minute (254 mm/sec).
PAGE 7
GENERAL INFORMATION WARNING: Gas-fired appliances are not designed for use in hazardous atmospheres containing flammable vapors or combustible dust, or atmospheres containing chlorinated or halogenated hydrocarbons. Installations in public garages or airplane hangars are permitted when in accordance with ANSI Z223.1 and NFPA 54 codes or CAN1-B149 and enforcing authorities. FOR YOUR SAFETY What to do if you smell gas: • • • • Do not try to light any appliance.
PAGE 8
For complete catalog information including submittals, energy calculations, dimension drawings, and more go to www.ReznorHVAC.com or call 800-695-1901. Note: In keeping with our policy of continuous product improvement, we reserve the right to alter, at any time, the design, construction, dimensions, weights, etc., of equipment information shown here. © 2021 Nortek Global HVAC, LLC. Reznor is a registered trademark of Nortek Global HVAC, LLC.