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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
The Johnson Controls BKT287-1R is a professional-grade 12-inch DIN rail engineered for secure mounting of System 350 modules and associated HVACR control systems
Typically required when outdoor temperatures drop below 55°F
OEM Compatibility: Precision-fit dimensions for York
Precision Calibration: Factory-set to specific WC (water column) ratings for accurate dual pressure monitoring
leak-free braze joint for standard copper linesets
Viessmann 7839451 Ionization Electr. 321702-401 The Johnson Controls BKT287-1R isThe Viessmann 7839451 Ionization Electrode is a critical flame sensing component engineered for precise combustion monitoring in high efficiency condensing boilers. Designed specifically for the Vitodens 200 W (B2HA, B2HB series) and Vitodens 222 F (B2TB series), this electrode facilitates the ionization process required by the burner control unit to verify flame presence and modulate fuel flow. Maintaining a clean and properly gapped ionization rod