LL357D4
The Marvair LL357D4 lead/lag controller is a complete control package designed to operate a fully or partially redundant air conditioning system. It consists of a two-stage heat and cool digital thermostat and a solid state timer. The LL357D4 insures equal run time on both air conditioners while allowing the lag unit to assist upon demand.
Features
- Solid state timer with 3.5 or 7 day changeover
- Push button for manual changeover
- LED indicates power on and identifies lead unit
- Timing logic retention for up to one hour on power loss
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Downloadable Literature
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LL357D4 Product Data Sheet and Installation Instructions. 4.2011 (750k) (includes installation instructions)