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NORA Oilheat Technicians Manual

have a communications port that allows for data interchange between the control and other products, such as diagnostic tools, modems, zoning systems, and home automation. Wiring the Honeywell R7184 Currently there are four models of the R7184: A, B, P and U. On each model, the thermostat leads and cad cell leads connect to the appropriate terminals. R7184A • The black wire connects to the limit control • The white wire connects to all neutrals • The blue wire connects to the igniter or transformer • The orange wire connects to the burner motor R7184B The B model has a 15-second “valve-on delay” feature requiring the installation of an oil valve. This control has an added violet wire that connects to that valve. The other wire from the valve is connected to the neutrals. All other wiring is consistent with the A model. R7184P The P model has both a fixed 15-second “valve-on delay” and a “burner motor-off- delay” feature which may be field selected to 30 seconds, 2 minutes, 4 minutes or 8 minutes or fixed at 15 seconds. In addition to the violet wire for “valve on delay,” there is a red wire that connects to the limit control, while the black wire connects to constant power to achieve the “burner motor-off delay” feature. All other wiring is consistent with the B model. R7184U The U model has all of the features of the P models with selectable on and off delays, plus low voltage dry alarm contacts that are located above the thermostat terminals. On the U model you have the ability to adjust dip switches that enable or disable both the valve on delay and the “burner motor-off delay.” This makes the U model control the same as the A control. This way you only need to stock one control on your truck. All other wiring is consistent with the P model. Model designations and revisions Honeywell puts the model designations and revision information for the R7184 next to the control part number and/or prints it on the side of the control. Revisions are numerical and indicate which improvements or changes are included in the particular control. For example, Series 1 controls have different cad cell indicator ranges; Revision 2 changed the pump priming cycle from 45 seconds to 4 minutes and added the limited recycle. Some Chapter 11 Primary Controls Chapter 11—Primary Controls 11-21


NORA Oilheat Technicians Manual
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