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The Q340A and Q390A thermocouples generate a thermoelectric current that senses a pilot flame on gas-fired heating systems
pre-calibrated for easy installation and customer use
Used as a freeze warning device
Controller with combined remote setpoint and sensor mounted on a wall
It senses for temperature
ZD6X22TZ/U No Image The Q340A and Q390A thermocouplesThis easy to wire damper includes a 24 volt motor used to control circulating air in HVAC systems. The ZD is a power close and spring open damper used when a normally open damper is required. It's typically used with TrueZONE and other electronic zoning systems.
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