Freeze Stat Wiring Diagram

If unit wiring diagram is not available or low ambient pressure switch s11 is wired in series with does not show the low ambient kit refer to appropriate outdoor fan relay or compressor contactor single stage wiring diagram in figures 3 through 13 for wiring or speed units. Read these instructions thoroughly before attempting. Refrigeration controllersfreeze stats part number setpoint range output capillary length differential feet meters f c comments l480b1239 20 f to 60 f 1 spdt 20 ft 61 m 10 f 56 c l480g1044 20 f to 60 f 1 spst 20 ft 61 m 15 f 8 c manual reset l482a1004 15 f to 55 f 2 spst one no one nc.
freeze stat wiring diagram

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Usually the freezestat is attached on the leaving side of the heating coil.

Freeze stat wiring diagram. But there are so many brands and types of freeze stats it is important that you understand them and how they are wired into the circuit to function properly. The freeze stat is easy to understand on paper because it is nothing more than a switch that will open if the air moving across the water coil should drop below a given setpoint. Installation instructions freeze stat kit 71 2 81 2 10 and 121 2 ton rooftop and packaged ac and 71 2 10 ton heat pump 92 42556 01 00 these instructions are intended as an aid to qualified service personnel for proper installation adjust ment and operation of this kit. This video is for the mechanical thermostat.

Rooftop units with water coils should always have freezestats even if using a waterglycol mixture. A freeze stat is a temperature sensing device for hvac that monitors a heat exchanger to prevent its coils from freezingfreeze stats can be used on both refrigerant to air and refrigerant to liquid type heat exchangers and serve different purposes with similar goals for each. In this video we have explained the wiring connection of thermostat in the refrigerator. Air handler water coil freeze stat the hvac air handler freeze stat is a low temperature limit control and it is used mainly in commercial systems in the ductwork on economizers or in air handlers just before any coil especially water coils.

Freeze protection at a low cost used to limit or control temperature in air conditioning systems or refrigerated enclosures applications include freezer cabinets display cases beverage coolers milk cooling tanks and cooling coils. You should use a freezestat to protect your water coils from freezing. Typically the heating coil would be upstream of the cooling coil. Description of assembled.

It can be avoided by correctly installing and commissioning a freeze stat. A freeze up of a hydronic coil in a buildings air system can create a nasty incident with expensive repercussions. How does a freezestat work. It is a safety and protection control to prevent extremely cold air from reaching the hot water or chilled water coils inside the air handler where the.

Following points we have covered.