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The RM7896A1012, part of the Honeywell 7800 Series, is an advanced microprocessor-based module used for on-off primary control in heating systems. Operating at a voltage of 120 VAC, it is designed to handle a range of input frequencies from 50 to 60 Hz.
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| Manufacturer | Honeywell |
|---|---|
| Product Type | Microprocessor-based integrated on-off primary control module |
| Product Line | 7800 Series |
| Part Number | RM7896A1012 |
| Pilot Type | Intermittent |
| Voltage Rating | 120 VAC |
| Input Voltage Frequency | 50/60 Hz |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | 60°C |
| Minimum Storage Temperature | -40°C |
| Maximum Storage Temperature | 66°C |
| Humidity Range | 85% RH (non-condensing) |
| Power Dissipation | 10 W maximum |
| Postpurge Timing | 15 seconds |
| Fusing | 15A Fast Blow, Type SC or equivalent |
| Mounting Type | Plug-in module on Q7800A wiring subbase |
| Main Flame Establishing Period | Intermittent |
| Pilot Flame Establishing Period | 4 or 10 seconds |
The Honeywell RM7896A1012 model is a microprocessor-driven integrated control module designed for precise heating management. The device operates at 120 VAC and can handle input frequencies of either 50 Hz or 60 Hz. This module is functional within a wide temperature range, from a minimum of -40°C to a maximum of 60°C during operation; these specifications make it suitable for challenging environments.
When stored, the module can withstand temperatures as low as -40°C and up to 66°C, ensuring reliability in various climate conditions. It also supports operational humidity levels of up to 85% relative humidity, as long as there is no condensation present.
The RM7896A1012 features an intermittent pilot design that establishes its main flame in a similar intermittent manner. When initiating the pilot flame, the module can establish it in either 4 or 10 seconds, depending on the configuration. For power management, the device dissipates a maximum of 10 watts and incorporates a postpurge timing of 15 seconds, allowing for effective operation after the flame is extinguished. The fusing requirement for this control module is a 15A fast blow fuse of Type SC or its equivalent, ensuring safe operation under varying conditions. The module connects via a plug-in configuration on the Q7800A wiring subbase, simplifying installation and maintenance.