NOTE: Weights listed are net weights for base unit only, options can change unit weights significantly. For option weights, please consult the printed catalog or your Reznor Representative.
Reznor® Series 100, Model B gas-fired gravity-vented unit heaters are designed for 80% thermal efficiency and are designed for use with natural or propane gas, as specified, in sizes from 25,000 to 400,000 BTUH input.
Model B unit heaters are designed for ceiling suspension with a centrifugal blower for air delivery. Sizes 25-100 are equipped with a direct drive blower motor with multi-speed taps capable of handling up to .50" w.c. of external static pressure. Sizes 125-400 are standardly equipped with a blower using an adjustable belt drive and motor capable of handling external static pressure up to .25" w.c. Optional motors and drives are available to increase the blower capability to handle up to .50"w.c. of external static pressure. Standard features on the Model B Series units include a manual match-lit pilot with 100% shutoff and a single-stage, 24-volt gas valve. A terminal strip connector facilitates field connection to a remote 24-volt thermostat for automatic operation. Each unit is provided with a fan control and all required limit safety controls, including an energy cutoff (ECO) device and a blocked vent switch.
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. (An open motor may be selected for a C.G.A. approved heater only when the heater will be equipped with a Reznor® field-installed blower cabinet.)
Notes:
Model B units for California require the addition of spark pilot Option AH2 or AH3.
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
Orifices for natural gas
Aluminized steel heat exchanger
Aluminized steel burner rack with stainless steel insert
Manual match-lit pilot with 100% shutoff
Single-stage combination gas valve
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
Reznor® Series 100, Model B gas-fired gravity-vented unit heaters are designed for 80% thermal efficiency and are designed for use with natural or propane gas, as specified, in sizes from 25,000 to 400,000 BTUH input.
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