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> New honeywell RM7800L1087 from factory- controller
New honeywell RM7800L1087 from factory- controller
The self-checking valve proving system (VPS) verifies the effective closure of automatic safety shut-off valves. When a failing valve is detected, the VPS will go into automatic lockout status, generating an alarm while preventing burner start-up, thereby avoiding a potentially unsafe condition. VPS programming is integral to the device; meaning a separate module is not required to accomplish VPS — saving you time and money. Device VPS default is ‘Never’, meaning valve proving does not occur. Activation of the VPS logic as well as the programmable post purge is accomplished through user set-up. Flexibility in VPS set-up and post purge allows multiple uses for a single control, including replacing several legacy devices with minimal or no modifications. Additionally, with VPS, a vent valve is not required for a double block system, and thus reduces installation costs. Further, VPS is accepted by NFPA 85/86 and UL795 (pending) as an equivalent level of safety to a vent valve in a traditional double block and bleed system (where regulations permit). Further control enhancements include increasing history files for total cycles and hours to 1,000,000 while adding a LED fault code (blinkum) annunciation on safety shutdown, with 20 possible codes. The S7800A1142 enhanced keyboard display allows for programming the VPS and post purge as well as configuring of S7830 expanded annunciator terminals to match user system drawings, providing a valuable troubleshooting aid. A “Call Service†business card alpha/numeric feature, which is pass code protected, was added as well.
* Valve Proving Feature, Selectable To Occur at 5 Different Times
* Valve Proving Demand Selectable Input
* Post Purge Programmable between 0–600 seconds or 10–60 minutes
* Fault Code Annunciation via Keyboard Display (127 Possible Codes with 6 Historical Files) or Power LED
* Selectable Pilot Flame Establishing Period (PFEP) with Interrupted Pilot Valve
* Includes S7800A1142 Enhanced Keyboard Display Module (RM7800L only)
* Modulated High Fire/Low Fire Proven Purge, Pre ignition and Lockout Interlocks
* Selectable Gas Direct Spark Ignition Input
* Shutter Drive Output for Dynamic Self-Checking UV Flame Detectors
* Compatible with Existing Honeywell 7800 Series Flame Detectors, Amplifiers and Pre Purge Cards
* 1,000,000 Total Cycles and Total Hours History
Your typical applications for RM7800L1087 Programmer control with display for automatically fired gas, oil or combination fuel single power burner applications where pre purge and proof of closure are desirable with pre ignition and lockout interlocks and High/Low Fire Proven Purge. Programmable post purge and valve proving functions. Control has a shutter drive for dynamic self-check ultraviolet flame detector applications.
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