Specifications

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Oil Primaries

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R7284B,U Interrupted Electronic Oil Primary

The R7284B,P,U,G Electronic Oil Primary is a line voltage, safety

rated, interrupted and intermittent ignition oil primary control for

residential oil fired burners used in boilers, forced air furnaces and

water heaters. The R7284B,P,U,G used with a cad cell flame sensor

operates an oil burner, spark igniter, and optional oil valve. The

control works with a low voltage and optional high voltage

thermostat. The primary controls fuel oil, senses flame, controls

ignition spark (either interrupted or intermittent) and notifies

through the EnviraCOM™ bus a remote alarm circuit when in

lockout.

The R7284 Series of Oil Primary Controls can be used with both

hydronic and forced air systems. When used with hydronic

systems, line voltage switching Aquastat® Controllers normally

provide for the starting and stopping of the combustion

sequences. With forced air systems, both mechanical and

electronic low voltage thermostats control the starting and

stopping of the combustion process.

Dimensions, Approximate: 4 5/32 in. long x 4 11/32 in. wide x 2 1/2 in.

high (105.4 mm long x 110.5 mm wide x 63.5 mm high)

Ignition Type: Interrupted and Intermittent

Temperature Range: -40 F to +147 F (-40 C to +64 C)

Mounting Bracket: Junction box on main burner

Electrical Rating, Contacts

Full Load: 7.4 A @ 120 Vac; 3.7 a @ 240 Vac

Locked Rotor: 44.4 A @ 120 Vac; 22.2 A @ 240 Vac

Approvals:

Underwriters Laboratories, Inc. UL and cUL Component Recognized

R7184A,B,U Interrupted Electronic Oil Primary

Line voltage, safety rated, control for residential oil fired burners

used in boilers, forced air furnaces and water heaters. When used

with a cad cell flame sensor, operates an oil burner and optional oil

valve. Can be used with both hydronic and forced air systems.

• Compatible with hydronic and forced air applications.

• Patented cad cell resistance readout.

• Available in 15-, 30-, and 45-second lockout times.

• Safe start check.

• Indicator light monitors burner flame status and system lockout.

• Uses proven flame detection and monitoring systems.

• Optional valve-on delay, blower-off delay models: 15 second, or

selectable 0 or 15 second valve-on delay.

• Zero time or selectable 0-, 2-, 4-, 6-minute blower-off delay.

• Oil valve control.

• Compatible with power venters without integral timers.

• Oil-resistant plastic cover for electronics.

Dimensions, Approximate: 4 5/32 in. long x 4 11/32 in. wide x 2 1/2 in.

high (105.4 mm long x 110.5 mm wide x 63.5 mm high)

Ignition Type: Interrupted

Temperature Range: -40 F to +147 F (-40 C to +64 C)

Electrical Connections: Burner motor, oil valve, ignition, cad cell, limit,

thermostat, alarm

Electrical Rating, Contacts

Full Load: 7.4 A @ 120 Vac; 3.7 a @ 240 Vac

Locked Rotor: 44.4 A @ 120 Vac; 22.2 A @ 240 Vac

Approvals:

Underwriters Laboratories, Inc. UL and cUL Component Recognized

Product Number Electrical Connections

Timing, Safety

Switch Description

R7284B1024 Burner motor, oil valve, ignition, cad cell,

limit, thermostat, alarm

15 sec. Electronic Oil Primary with 15 seconds lock out timing

R7284U1004 Burner motor, oil valve, ignition, cad cell,

limit, thermostat, alarm

Settable 15, 30

or 45 sec.

Electronic Oil Primary with selectable 15, 30 or 45 second lock out timing,

selectable valve and blower delays, and two line LCD display

Product Number

Lead Length Alarm Load Ratings

Timing, Safety

Switch Mounting Bracket(inch) (mm) (Pilot Duty) (Resistive)

R7184A1026 10 in. 254 mm — — 15 sec. Junction box on main burner

R7184A1034 10 in. 254 mm — — 30 sec. Mounts on standard 4 x 4 in. junction box

R7184A1042 10 in. 254 mm — — 45 sec. Mounts on standard 4 x 4 in. junction box

R7184B1024 10 in. 152 mm — — 15 sec. Junction box on main burner

R7184U1004 10 in. 254 mm 2 A @ 30 Vac 2A @ 30 Vac 15 sec. Junction box on main burner

R7184U1012 10 in. 254 mm 2 A @ 30 Vac 2A @ 30 Vac 30 sec. Junction box on main burner

R7184U1020 10 in. 254 mm 2 A @ 30 Vac 2A @ 30 Vac 45 sec. Mounts on standard 4 x 4 in. junction box

Summary of content (3 pages)

PAGE 1
Oil Primaries R7284B,U Interrupted Electronic Oil Primary The R7284B,P,U,G Electronic Oil Primary is a line voltage, safety rated, interrupted and intermittent ignition oil primary control for residential oil fired burners used in boilers, forced air furnaces and water heaters. The R7284B,P,U,G used with a cad cell flame sensor operates an oil burner, spark igniter, and optional oil valve. The control works with a low voltage and optional high voltage thermostat.
PAGE 2
Oil Primaries Electrical Rating, Contacts Full Load: 7.4 A @ 120 Vac; 3.7 a @ 240 Vac Locked Rotor: 44.4 A @ 120 Vac; 22.2 A @ 240 Vac Approvals: Canadian Standards Association: CSA Certified; File no. LR95329-1 Underwriters Laboratories, Inc. UL Component Recognized; File no. MP268, Vol. 35 Sec. 1,3 Includes 45 sec. With LED for lockout indication, and manual trip lever on safety switch to assure burner shutdown during servicing. — * R8184G4025 45 sec.
PAGE 3
Oil Primaries RA116; RA117 Protectorelay® Controls One-piece, stack-mounted oil burner primary controls that cycle the burner on and shut down the burner on flame loss or system malfunction. • Combine a Protectorelay® unit for cycling the burner and a Pyrostat® flame detector for sensing temperature changes of flue gases up to 1000 F (556 C). • Manual reset of safety switch required after ignition failure completely shuts off main burner.