Products Unit Heaters B

Media

B
B
B
B
B


Description

Reznor's B gas-fired, gravity-vented unit heaters are designed for ceiling suspension with a centrifugal blower for air delivery with 80% thermal efficiency. They can be used with natural or propane gas, and are specified in sizes from 25,000 to 400,000 BTUH input.

These units are approved for installation in The United States and Canada by the Canadian Standards Association(CSA).  Canadian units require the selection of a totally enclosed motor.

Notes:

  • Not certified for residential use.
  • 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 NFPA54 Codes or CAN1-B149 Codes and enforcing authorities.  NOTE: Regulated combination redundant gas valve consists of combination pilot solenoid valve, electric gas valve, pilot filter, pressure regulator, pilot shutoff, and manual shutoff, all in one body.  Gas supply pressure must not exceed 0.5 psi (8 oz or 14"w.c.).  Minimum inlet pressure for natural gas is 5" w.c.; minimum inlet pressure for propane gas is 11" w.c.CAN/CGA 2.6

Heating Range ( MBH )

Airflow Range ( CFM )

Throw Range ( Feet )

Heating Efficiency ( Gross )

Standard

  • Orifices for natural gas
  • Aluminized steel heat exchanger
  • Aluminized steel burner rack with stainless steel insert
  • Single-stage combination gas valve
  • Spark ignited pilot
  • 115/1/60 supply voltage - Sizes 25-300230/1/60 supply voltage - Size 400
  • A.G.A. models - ODP motor with internal overload.  C.G.A. models - totally enclosed blower motor
  • Motor contactor - Sizes 300 and 400
  • Direct drive blower with multi-speed taps - Sizes 25-100.  Adjustable belt drive blower - Sizes 125 - 400
  • Fan and limit safety controls
  • Blocked vent shutoff system
  • Energy cutoff (ECO) device
  • 24-volt control voltage transformer
  • Horizontal/vertical vent outlet
  • Horizontal louvers or duct adapter
  • Terminal strip connector for 24-volt field wiring
  • Convenient bottom burner access
  • 4-point 3/8"-16 threaded hanger connections

Options /Accessories - Factory Installed:

  • Equipped for propane gas
  • Equipped for high altitude (2001-9000 ft)
  • E-3 (409) stainless steel heat exchanger and burner
  • Two-stage gas control (50% low fire) - Sizes 75-400
  • Spark ignited, intermittent safety pilot with electronic flame supervision and with or without timed lockout (timed lockout is required for propane gas)
  • Manual summer/winter switch
  • Burner air shutters
  • 208/230 single phase supply voltage
  • 208/230 three phase supply voltage
  • 460 three phase supply voltage - Sizes 75-400
  • 575 three phase supply voltage - Sizes 125-400
  • Belt guard and/or blower inlet guard
  • Alternate motor HP and drive - Sizes 50-400 (See page 24)
  • Burner air shutters
  • Totally enclosed blower motor
  • Low ambient fan control relay

Options /Accessories - Field Installed:

  • Power venter
  • Vertical louvers
  • Downturn air nozzle, 25-65 Deg. or 50-90 Deg. variable air deflector range
  • Thermostat and relay kits
  • Air recirculation kits
  • Manual summer/winter switch
  • Filter cabinet with 1" or 2" filters
  • Polytube adapter - models 75-400
  • Multiple heater control
  • Hanger kits to suspend from 1" pipe or to use with vibration isolation suspension
  • Unit-mounted thermostat bracket
  • Step down transformer 230/115 or 460/115 - Sizes 25-100
  • Burner air shutters
  • Low ambient fan control relay kit
  • Belt guard and/or blower inlet guard
  • Single-stage and two-stage thermostats
  • Thermostat guard with locking cover
  • Manual shutoff valve and union
  • Gas conversion kit

 

 


Brochures
2 Files

Brochures


English
Comp Edge: With over 70 years of production, Reznor Unit Heaters are the proven leader in the industry
Comp Edge: With over 70 years of production, Reznor Unit Heaters are the proven leader in the industry
Download File
87.4 kB
General Product Brochure
Overview brochure covering the Reznor product line.
Download File
1.6 MB

Technical Data
2 Files

Technical Data


English
Catalog - Unit Heater
Unit heater catalog
Download File
4.5 MB
Submittal - Options - Unit Heater
Options available for gas fired unit heaters
Download File
1.0 MB

Installation/Parts/Service
33 Files

Installation/Parts/Service


English
Unit Installation Manual - F & B
Installation manual for Models F & B
Download File
1.5 MB
Parts Manuals - F & B
Parts manual for Models F & B (and discontinued Models FE & BE)
Download File
962.8 kB
Option - Installation - Blower/Filter Cabinet Instructions - B
Blower/Filter Cabinet installation instructions for Model B
Download File
213.1 kB
Option - Installation - Polytube Adapter Instructions for Model B - Suspended Unit
Installation instructions for optional polytube adapter for Model B when unit is suspended from the ceiling
Download File
411.8 kB
Option - Installation - Horizontal/Vertical Vent Outlet Instructions sizes 250, 300 & 400
Instructions for assembly of required vent outlet for Models F & B in sizes 250, 300 & 400
Download File
113.1 kB
Option - Installation - Downturn Nozzle Installation - Models F & B
Instructions for installing the downturn nozzle for Models F & B
Download File
454.5 kB
Option - Installation - Power Venter Installation - Models F & B
Instructions for installing field supplied power venter for Models F & B
Download File
678.9 kB
Option - Installation - Vertical Louvers Installation - Models F & B
Instructions for installing vertical louvers for Models F & B
Download File
205.1 kB
Option - Installation - Duct Flange Assembly - Unit Heater Blower
Instructions for installing a duct flange on blower models B, UDBP, & UDBS
Download File
318.8 kB
Option - Installation - Hanger Kit Installation - Unit Heaters
Instructions for installing an optional hanger kit
Download File
401.1 kB
Option - Installation - Thermostat Bracket (Unit Mounted) Assembly
Instructions for installing a unit mounted thermostat bracket
Download File
304.1 kB
Option - Installation - Polytube Adapter Instructions for Model B - Floor Mount
Installation instructions for installing the optional polytube adapter for Model B when unit is installed at floor level
Download File
345.6 kB
Option - Installation - Summer/Winter Blower Switch Instructions - Model B
Instructions for installing a summer/winter blower switch for Model B
Download File
786.2 kB
Option - Installation - Horizontal/Vertical Vent Outlet Instructions, size 125
Instructions for required field assembly of vent outlet for Models F & B in size 125
Download File
116.7 kB
Option - Installation - Burner Air Shutters Installation - Models F & B
Instructions for installing burner air shutters for Models F & B
Download File
417.9 kB
Option - Installation - Low Ambient Control Relay Installation - Models F & B
Instructions for installing low ambient control relay for Models F & B
Download File
156.0 kB
Option - Installation - Relay & Thermostats Installation - Models F & B
Instructions for installing relay and/or thermostat for Models F & B
Download File
217.0 kB
Option - Installation - Stepdown Transformer Installation - Models F & B
Instructions for installing a stepdown transformer for Models F & B
Download File
231.2 kB
Option - Installation - Blower Guard - Unit Heaters
Instructions for installing a blower guard
Download File
84.4 kB
Option - Installation - Multiple Heater Control Installation
Installation instructions for multiple heater control system
Download File
491.0 kB
Parts Manuals - Functional Replacement Fan/Blower Controls and Limit Controls
 Parts manual for functional replacement fan/blower controls and limit controls
Download File
322.8 kB
Parts Manuals - Replacement Ignition System and Gas Valves
Replacement ignition system and gas valves by serial number code and Maxitrol system components by serial number suffix
Download File
964.6 kB
Parts Manuals - Pilots - Parts manual
Functional replacement pilots
Download File
399.3 kB
Conversion Info - Gas Conversion - Model F, B
Gas conversion kit and instructions for Models F & B
Download File
515.3 kB
Field Service - Gasket Kit for Heat Exchanger - B
Gasket kit for replacement heat exchanger for Model B
Download File
66.5 kB
Option - Installation - Valve Kit - M6
Replacement kit for natural gas valve with code M6
Download File
120.5 kB
Conversion Info - Ignition Conversion Kit - Models F, B
Ignition conversion kits to convert older Model F & B heaters with standing pilot to spark-ignited, intermitten safety pilot with or without lockout
Download File
418.8 kB
Field Service - Replacement Relay Kit - PN 259521
Replacement relay kit for Reznor part number 259521 - applies to power vented units using Reznor part number 46233 or 259518 time delay relay
Download File
646.2 kB
Field Service - Ignition Control Replacement - Various Models
Ignition control replacement kit for pilot code 62, 63, 65, 66, & 84 (found in first set of digitis of serial number)
Download File
241.7 kB
Option - Installation - Valve Kit - M8, U8, U9
Replacement kit for propane valve with serial number code M8, U8, or U9
Download File
127.1 kB
Conversion Info - Install Re-Designed Burner Rack Support
Installation instructions for re-designed burner rack support included in replacement heat exchanger for Models F, B, FE, & BE
Download File
65.7 kB
Field Service - Replacement of Discontinued Relays
Installation for kits designed to replace relays no longer available from suppliers. Applies to all Reznor units using obsolete relays.
Download File
340.4 kB
Français
Unité manuel d'installation - F et B
Installation, opération et entretien - Modèles F et B
Download File
2.3 MB

Other Files
1 File

Other Files


English
Warranty Statement
Reznor equipment limited warranty statement
Download File
175.7 kB