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this specific 3-way mixing configuration is primarily engineered for water and glycol-based hydronic systems
the Emerson Alco 047505 should be mounted with the coil in an upright or vertical position
Precise Sensing: High-accuracy NTC thermistor assembly ensures the controller accurately tracks boiler temperature for safety limit and circulator control
Streamlined Installation: Low-profile plastic enclosure mounts directly to standard surfaces with minimal footprint
By connecting the sample line to the Gray (P2) port and leaving the Black (P1) port open to the atmosphere
Resideo R8246A1004/B Contactor 320735-701 this specific 3-way mixing configurationThe Resideo R8246A1004 B Quiet Electric Heat Contactor is a veterans choice for reliable 2 pole DPST switching in residential and light commercial electric heating systems. Engineered specifically for 24V HVAC control, this contactor is the industry standard solution for replacing over 50 competitive primaries, including the legacy R8330 Furnace Sequencer. Its specialized quiet operation design eliminates the loud mechanical "thump" typical of
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