VO \'u *40 * BO KÂ O AO 50 BO 70 BO * 1 ‘ * ‘ * jr 3 2.75" (70)' ~D Front View 1.5" (38)' 4.75" (121) Side View Specifications — Table A Model RaTeg7(;F) Contacts Range (°F) Max AC Volts Max AC Amps WTL-121 40-80 SPST 30 V 1 Amp GENERAL Note: Type WTL thermostats are designed for temperature control service only. Because they do not fail safe, they should not be used for temperature limiting duty. WARNING: Users should install adequate back-up controls and safety dev

Because they do not fail safe, they should not be used for temperature limiting duty. WARNING: Users should install adequate back-up controls and safety devices with their electric heating equipment. Where the consequences of failure may be severe, back-up controls are essential. Although the safety of the installation is the responsibility of the user, Chromalox will be glad to make equipment recommendations. WARNING: Not for use in hazardous environments as described in the National Electric

Do not mount adjacent to space around wires in the conduit with rock wool. a large magnetic contactor, as vibration and shock will cause thermostat to interact erratically – resulting in chattering of the contactor. WARNING: Do not twist or uncoil the coiled element on top of the case. The proper location of a heavy duty room thermostat is important to assure good performance. 1. Locate where air circulates freely. 2. Never install on or near outside wall. 3. Keep away from windows or doors. 4.

} MotorBlueBlueOptional ThermostatBuilt in or field installedOptional Disconnect SwitchBuilt in or field installedPower60 HzElements1O Element Wiring(Omit for 2 ElementHeaters) CutoutTerminalBlockT1T3T2L1L3L2BlackBlackFigure 4 208-277V 1O — 2.6 & 5 kW WIRING DIAGRAMS (cont’d.) TO T1TO T1TO T2TO T3TO T3TO T2{ TRANSFORMER COLOR CODE INDEXVOLTLEAD CLRSLEAD CLRSLEAD CLRSX2BLUBLUBLUBLUBLUX2WHTWHTWHTWHTWHTH2REDORBRBLK/REDGRAYELBLKBLK575YELBLKBLK480YELBLKBLK277YELBLKBLK240YELBLKBLK208X1X1H124V SEC.120V

2. Differential: 5.F. 3. Non-inductive Rating: 120V @ 25 Amperes 240V @ 25 Amperes 277V @ 22 Amperes LO HIOFFChromaloxR GENERAL The following procedure contains instructions for installing thermostat kits HVH-TK5 and HVH-TK6 in HVH-02 through HVH15 Heaters. ELECTRIC SHOCK HAZARD. Disconnect all power before installing thermostat kit. Failure to do so could result in personal injury or property damage. Thermostat kit must be installed by a qualified person in accordance with the National Electric

CAUTION: Users should install adequate back-up controls and safety devices with their electric heating equipment. Where the consequences of failure may be severe, back-up controls are essential. Although the safety of the installation is the responsibility of the user, Chromalox will be glad to make equipment recommendations. 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 s

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.

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

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

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