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.
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.
