4 I sic, pit ¡тшшт booie SALES REFERENCE (Supersedes PK428-4) PK428-5 161-048628-001 DATE OCTOBER, 1987 Chromalox General Purpose Industrial Thermostat Catalog Number PIT with Rain-Tight Enclosure Catalog Number PIT-EP with Explosion-Proof Enclosure Type PIT (rain-tight) a UL Listed Not a fail-safe device Type PIT-EP (explosion-proof) Specifications — Tabie A Catalog Number (RainTight; Catalog Number (Explosion Proof) Temp. Range (°F) Sensitive Buib with 10' Capillary V' &3. Nomi

Applications – Automatically controls room temperature by turning electric air heaters on and off. Can be used to control the air heaters directly, within thermostat rating. For higher ratings use thermostat with magnetic contactor. Place thermostat on inside wall, away from undue heating or cooling influences, about 4 feet above the floor. NOTICE: Type WCRT thermostats are designed for temperature control service only. Because they do not fail safe, they should not be used for temperature limit

Turning in lowers indicated reading. 5. Check adjustment by allowing temperature to stabilize and comparing readings. Repeat above steps if necessary. 6. Replace instrument cover and knob. Adjusting Single Switch Types (BCT-800 and 820E) 1. Remove knob and instrument cover, 2. Move the adjustment pointer up scale beyond the indicating pointer. This permits checking the set point by moving the lever arm upward with a finger or tool simulating thermal assembly movement. 3. Connect test ligh

4 I sec, вот Inumber зоот REFERENCE PK451 161-058028-001 DATE DECEMBER, 1986 Chromalox Indicating Thermostat Control — Model BCT Model Numbers are listed below Model BCT-800 Figure 1 Specifications — Table A Thermal Element Dual Temp. Range Model Number Bulb end Cap Material Cep Length (FT) Bulb (IN) Dla. Length -40° to 1 20°F -40° to 50°C BCT-800-4BC BCT-802-4BC" Copper 6 % 6Й BCT-800-4BS BCT-802-4BS* Stainless Steel 6 % 6Й 0°F to 250 °F - 20° to 120°C BCT-B00-6BC ВСТ-Э

Principle of Operation — Control action of these thermostats is provided through the principle of liquid volume change. With a variation in temperature, the liquid in the sensing bulb expands or contracts, causing a bellows to actuate the switching mechanism. Note: In Inverse-Action Thermostats, contacts close on temperature rise. Housing — The control housing and cover assembly is of heavy- gage sheet metal on NEMA-I models. Moisture resistant (LT) models have housing and cover assembly made of

Typ. Capillary2 / "21324 / "3322 / "932DialStopPostConnect LoadHereShaft ShownIn "Off" Position(Without Calibrated Cap) Connect PowerSupply Here/ "1116Calibration CapWhite NylonUniversal CouplerSet Screw LockFigure 1 Sensing Bulb Temperature Approx. Capillary Max. Range Dia. Length Length A.C. Rating Model (°F) Style (In.) (In.) (Ft.) (Amps) AR-115EP 7 AR-115AEP 0 – 100 5 0.375 43/8 2 AR-115CEP 12 AR-214EP 7 30 Amp AR-214DEP 4 0.250 55/32 15 120-277 VAC AR-215EP 60 – 250 7 AR-215AEP 5 0.375 4 2

Specifications — Model PCN Temperature Range (°F) Volts Max Amps. Capillary Length (Ft.) Stock GNIT-5 360946 30 to 220 120/240 25 5 S GNIT-12 360954 30 to 220 120/240 25 12 S Other temperature ranges available. Contact your local Chromalox Sales office. GENERAL FIRE/EXPLOSION HAZARD. This thermostat is not intended for use in hazardous atmospheres where flammable vapors, gases, liquids or other combustible atmospheres are present as defined in the National Electrical Code. Failure to comply can

Minimum capillary tube bending diameter is 1/2” I.D. (see Figure 4). Figure 3 (Sensing Bulb) 1” Do Not Bend or Kink Crimped End 1/2” Rod Figure 4 (Capillary Tube) C. Any deformations of bulb or capillary that result in leakage of fluid from control renders control inoperative. D. Avoid passing control capillary tube through zones whose temperature is in excess of controlled process temperature. Erratic control or destruction of control function may result. WIRING ELECTRIC SHOCK HAZARD. Disconect

never above 150°F. 1. Thermostat must be mounted in a vertical position only. 2. Use sheet metal or wood screws through the four 7/32” diameter mounting holes in baseplate to mount control (see Figure 2). 3. For controlling platen or die temperatures, insert entire sensing bulb into drilled holes selected for snug slip fit. The longer, more sensitive Style 9 bulbs should be used for controlling air temperatures or pipe line heating. 4. NOTICE: A. Bending or deforming sensing bulb will alter cont

Figure 3 (Sensing Bulb) Figure 4 (Capillary Tube) 1” 1/2” Rod Do Not Bend or Kink Crimped End D. Avoid passing control capillary tube through zones whose temperature is in excess of controlled process temperature. Erratic control or destruction of control function may result. WIRING 6. Connect wires according to wiring diagrams (Figures 8 thru 12). Note: Electrical connections should be made with gener- ELECTRIC SHOCK HAZARD. Disconect all power to ous loops of wire — approximately 6” per lead.