PARTS & ACCESSORIES Model 7590 Gas Power Burner Control Description / Applications The Beckett GeniSys Gas Power Burner Control is a safety control designed for use on gas power burners. This control is intended for use in residential and light commercial gas heating applications. Applications may include boilers, furnaces, water heaters, space heating and commercial cooking equipment.
Contents Features........................................................................................ 3 Specifications............................................................................... 4 Electrical Ratings........................................................................... 4 Electrical Connections.................................................................... 4 Environmental Ratings................................................................... 4 Approvals...................
Features ◦◦ For use in Natural Gas or LP gas applications. ◦◦ Controls 120 Vac spark igniter, motor/blower and 24 Vac gas valve, 50/60 HZ ◦◦ Provides proof of flame through flame rectification using a separate flame rod ◦◦ Checks combustion air proving switch contacts (24 Vac) on 7590C and 7590D models to prove moving combustion air and guard against welded contacts.
Specifications Electrical Ratings Environmental Ratings ◦◦ Operating Temperature Range: -40°F to +175°F (-40°C to +79.4°C). ◦◦ Voltage: 120 volts 50/60 Hz (igniter, ◦◦ Relative Humidity Operating Range 5% ◦◦ Current Draw (run): 0.2 Amps (control Not intended for outdoor use unless mounted in appropriate enclosure. ◦◦ Main Valve Rating: 2.0 Amps Approvals motor) 24 volts (18-30 Vac) 50/60Hz (gas valve and air proving switch) only) ◦◦ Motor Relay Rating: 7.4 Amps (120V) ◦◦ Igniter Relay Rating: 1.
Figure 1 - Getting to know the control 1/4” Terminal Connections 6-Pin 24 V Connector Flame Sense Com Port (COM 1) Thermostat Terminals Status/Reset LED Button Air Pressure Switch Flame LED MV LED Figure 2 - Gas Conversion Burner Hookup Drawing Y/W W/R Y BK BR Air Pressure Switch BR W W W W Burner Motor W O L2 (IGN) Igniter L2 (MTR) Motor AP1 AP2 24V (1/4” QC) B 24V GROUND Igniter Transformer Burner Ground G L2 Thermal Switch L1 Limit B LWCO (If Required) B Gas Valve W V
Installation Professional Service Required Incorrect installation or misuse of this control could result in severe personal injury, death, or substantial property damage from explosion or fire. Read and understand this manual. This control must be installed, configured and put into operation only by a qualified individual or service agency that is: • Licensed or certified to install and provide technical service to gas heating systems. • Experienced with all applicable codes, standards and ordinances.
No User Serviceable Parts • Do not open control. • Do not attempt to replace any components. Mounting The control should be mounted in accordance with the burner manufacturer’s or appliance manufacturer’s instructions. If this is a replacement application, mount the control in the same location as the existing control. The 7590 control is designed to mount on a 4” x 4” junction box on the burner. Avoid mounting locations where water could drip on the control.
Wiring must comply with all national and local codes. Wiring must follow appliance and burner manufacturer’s instructions. Follow the appropriate hook up drawing for the application in which the control is being installed. The ignition cable length should be 3 feet or less, or meet igniter manufacturer’s specified length. Avoid placing the ignition cable in direct contact with metal surfaces as reduced spark voltage could result. Use plastic or ceramic standoffs if necessary.
that help provide status and diagnostic information. Reference Figure 1. The three LEDs are Status, Flame, and MV (main valve). The LEDs use 4 modes; On, Off, Slow Flash, Fast Flash. ◦◦ The air pressure switch fails to close after the motor/blower starts If the control is programmed for 3 trials for ignition, the control will lockout after the 3rd unsuccessful attempt.
The 7590D and T models can be configured to automatically allow an ignition retry once every 1-8 hours (selectable using the diagnostic tool or by factory configuration). This configuration may help by allowing periodic ignition retries until the gas supply is restored. The ignition retries will only happen if there is power to the burner and there is a call for heat from the thermostat or controller. The control will not allow retry if the lockout was caused by a failed gas valve relay check.
will shut off and the main gas valve will remain open. status of air proving switch. If switch is closed, (indicating the pressure switch is stuck) control will enter lockout. ◦◦ Multiple ignition trials may be needed to ◦◦ If the air proving switch is open, the establish gas flow on new installations or if burner has been out of use. If control locks out, push Status/Reset button to restart ignition sequence. motor will start.
LED Key: = OFF = ON = FLASHING For below charts, “Troubleshooting” & “Troubleshooting Sequence” sections. Table 3 - Normal LED Sequence LED LED STATE CONTROL STATE All LEDs off No call for heat or no power to appliance FLAME MV STATUS Note: On a call for heat, after the motor/blower starts, the air proving switch must close before pre-purge or trial for ignition timers can start. The Status LED may turn on momentarily while waiting for the air pressure switch to close.
Troubleshooting Check LEDs First - Find the box on the left that matches the LED display you are seeing. When all three LEDs are on continuously and the burner is lit, the system is operating normally. The troubleshooting information is intended as a guide and may not cover all possibilities in every application. Table 5 - Troubleshooting FLAME MV STATUS FLAME MV STATUS FLAME MV STATUS FLAME MV STATUS If the red Status LED is off: ▪▪ No power to the control.
Table 5 (continued) FLAME MV STATUS FLAME MV STATUS FLAME MV STATUS FLAME MV STATUS If the Status and MV LEDs are on continuously and the Flame LED is flashing ▪▪ The flame signal is weak ▪▪ Try to improve flame signal strength by following steps in the Troubleshooting Sequence under “Is the yellow Flame LED on?” If the red Status and yellow Flame LEDs are both flashing ▪▪ The control is sensing flame when no flame should be present. ▪▪ The control enters a hold state, this is not a lockout.
Troubleshooting Sequence Start with gas supply off and set thermostat or controller to call for heat. Is the red Status LED on? NO MV STATUS ▪▪ No power to the module. ▪▪ Check to make sure thermostat or controller is calling for heat and limit is closed. ▪▪ See instructions in troubleshooting box “If the red Status LED is off”. YES ▪▪ If red Status LED is flashing slowly (1 time per second) control is in pre-purge, motor should be running.
Troubleshooting Sequence (continued) ► Turn the thermostat or controller off to end the call for heat. ► Turn on the gas supply. ► Turn the thermostat or controller back on to call for heat. The ignition sequence will start over. Repeat the steps above and proceed to lighting the burner. FLAME MV ▪▪ ▪▪ ▪▪ ▪▪ STATUS Does the burner light? NO ▪▪ ▪▪ ▪▪ ▪▪ ▪▪ ▪▪ YES ▪▪ ▪▪ ▪▪ Continued on next page 16 If burner fails to light, control will lockout or enter waiting period.
Is the yellow Flame LED on? NO MV STATUS ▪▪ Flame is not being proven, control will lockout or enter waiting period. ▪▪ With power off, check the electrical connections from the control to the flame rod. ▪▪ Make sure all connections are clean and free of corrosion or build up. ▪▪ Check the continuity of the ground wire and the sense wire. ▪▪ The control, electrode and flame sensor must have a common ground with the burner for proper operation.
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Limited Warranty Information The R. W. BECKETT CORPORATION (“Beckett”) warrants to persons who purchase its “Products” from Beckett for resale, or for incorporation into a product for resale (“Customers”), that its equipment is free from defects in material and workmanship. To qualify for warranty benefits, products must be installed by a qualified service agency in full compliance with all codes and authorities having jurisdiction, and used within the tolerances of Beckett’s defined product specifications.
