The R7184A,B,G,P,U Electronic Oil Primary is used in residential oil-fired boilers, forced air furnaces, and water heaters. It controls fuel oil supply, senses flame, controls ignition spark, and notifies a remote alarm circuit in lockout. It can be used with both hydronic and forced air systems, and features delayed valve-on and burner motor-off delay functions.
This manual covers the R7184 series (A, B, G, P, U) electronic oil primary controls used in residential oil‑fired boilers, forced‑air furnaces, and water heaters. It describes the product’s features, safety warnings, and the required installation steps, including mounting, wiring color codes, and connection of thermostats and EnviraCOM™ devices.
The document also explains the control’s timing functions (valve‑on delay, burner‑motor‑off delay, lockout), diagnostic LED indications, and detailed troubleshooting procedures such as cad cell resistance checks, pump‑priming cycles, and reset operations. Electrical ratings, environmental limits, and approval information are listed in the specifications section.
| Input Voltage | 102 to 132 Vac, 120 Vac nominal |
|---|---|
| Input Frequency | 60 Hz |
| Burner Relay Contact Rating | 120 Vac, 10 A full load (FLA) |
| Valve‑on Delay | 15 seconds |
| Burner‑motor‑off Delay | 0, 2, 4 or 6 minutes (field selectable) |
| Lockout Time | 15, 30 or 45 seconds (factory‑programmed) |
| Operating Ambient Temperature | -40°F to +150°F (40°C to +66°C) |
Press and hold the reset button for at least 30 seconds until the LED flashes, then the unit returns to idle mode.
The valve‑on delay is fixed at 15 seconds. The burner‑motor‑off delay can be set to 0, 2, 4, or 6 minutes using the DIP switches.
During run mode, press and release the reset button; the diagnostic LED flashes a pattern that indicates the resistance range.
The valve terminal is identified by a violet wire.