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Honeywell Primary Combustion Controls

Honeywell RA890 Primary Controls

The RA890 control is the workhorse of the electronic combustion controls. From the old R180-190 devices to the latest model, this unit will replace all models using the same 10-screw subbase. When servicing these device, remember: the RA890F has a green reset button and uses a rectification signal, while the RA890G has a purple reset button and works with a U.V. minipeeper. For individual questions regarding the device you are replacing, contact our sales and engineering department for information. Our archives contain many of the old, original specs.

Part # S.S. Timing Flame Response Sensor  
RA890F1288 15 sec. 3.0 sec. Rectifying Call... Add to Order
RA890F1338 30 sec. 0.8 sec Rectifying Call... Add to Order
RA890F1346 30 sec. 3.0 sec. Rectifying Call... Add to Order
RA890G1229 15 sec. 0.8 sec Ultraviolet Call... Add to Order
RA890G1260 15 sec. 3.0 sec. Ultraviolet Call... Add to Order

Honeywell R4795A-D Primary Control

Upgrade to modular convenience! Directly mount the Honeywell R4795 primary control on RA890 subbases. The R4795A provides a plug-in prepurge card and flame signal amplifier.

NOTE: 208V and 220V controls are no longer U.L. approved. Consider conversion to 120V when replacing.

Relay

Part # Voltage  
R4795A1016 120Vac Call... Add to Order
R4795A1040 220Vac Call... Add to Order

Purge Timers

Part # Time  
ST71A1000 7 sec. Call... Add to Order
ST71A1018 30 sec. Call... Add to Order
ST71A1034 90 sec. Call... Add to Order

Amplifier

Part # Type Flame  
R7290A1001 Ultraviolet (purple) 3.0 sec. Call... Add to Order
RA890F1270 Rectifying (green) 3.0 sec. Call... Add to Order