T-200 Serie Single ulb Thermotat General Intruction Application Thee unit are ued for on-off control of media temperature in duct, tank, etc. Feature Mechanim encloed in rugged die cat cae with metal cover. Large coded terminal. Liquid-filled thermal element actuate one napacting SPDT per tage. Setpoint adjutment knob i clearly marked and ha receed locking crew. opper thermal element i uitable for either immerion or duct mounting. T-202, T-252, and T-271 only are UL Lited. Applicable Literature ro-eference Guide, F-23638 eference Manual, F-21683 Application Manual, F-21335 Electric/Electronic Product atalog, F-27382 Material Safety Data Sheet MSDS-1 Printed in U.S.A. 11/09 opyright 2009 Schneider Electric All ight eerved. F-18783-5
SPEIFIATIONS Setpoint Adjutment ange: Setpoint dial marked in F. See Table-1 for pecific range. Sening Element: Liquid-filled thermal element. Electrical : One nap-acting SPDT per tage. ating, See Table-1. onnection: oded terminal. ae: ugged die cat with metal cover. Half inch conduit opening at top and bottom. Ambient Temperature Limit: ae, -40 to 140 F (-40 to 60 ). ulb, 230 F (110 ). Output: action i adjutable. See Table-1. Dimenion: ae, See Figure-18. Thermal Element, 3/8" diameter x 9-1/2" long (9.5 mm x 241 mm). Table-1 Specification. Part Number Decription apillary* Scale ( F)** T-202 Single tage heating or cooling 6' copper 10 to 90 T-252 Two tage 6' copper 10 to 90 T-271 heating or cooling 10' armored 0 to 160 T-282 Three tage heating or cooling T-288 Four tage cooling only 6' copper 10 to 90 Volt 120 240 24 120 240 277 FLA Amp 3.8 3.8 2.9 ating (A Only) 50/60 Hz LA Amp 22.8 22.8 17.4 eitive Amp 12 6 15 15 15 15 Pilot Duty VA 125 125 26 125 125 Thermal F ( ) Factory Adjutable Set 1 to 15 2 (1.1) (0.55 to 8.3) 2 (1.1) per tage 3 (1.66) between tage 2 to 7 (1.1 to 3.8) per tage 0 to 20 (0 to 11) between high and low tage *20' (6 m) and 45' (14 m) capillary length are available. **eliu cale i available a an option. Specify -216 uffix. 1600 VA maximum load. AESSOIES AT-201 opper bulb well (provided) AT-203 Stainle teel bulb well (provided) AT-208 ulb duct mounting kit (order eparately) AT-211 Outide bulb hield (order eparately) AT-401 Houing for hazardou location TYPIAL APPLIATIONS Temp. Drop Figure-1 Typical of T-202, Single Stage. High Low Heat ool Firt tage High Low Second tage Low High Temp. Drop Temp. Drop make on temp. drop. Figure-2 Typical of T-252 and T-271, Two Stage. 2 opyright 2009 Schneider Electric All ight eerved. F-18783-5
High Medium Low Heat ool Firt tage High Low Second tage Med. Med. Third tage Low High Temp. Drop Temp. Drop Temp. Drop make on temp. drop. Figure-3 Typical of T-282,Three Stage. Stage 4 ool Stage 3 ool N NO N NO Stage 3 Front Top Stage 2 Front ottom N NO N NO Stage 4 ear Top Stage 1 ear ottom S1 S2 Stage 2 ool Stage 1 ool ommon i common of a ingle pole, double-throw witch. cloe on rie in temperature (call for cooling). contact, preent in witch but not wired, cloe on a drop in temperature (call for heat). Figure-4 Typical of T-288, Four Stage ooling. INSTALLATION Inpection equirement aution Wiring Inpect the package for damage. If damaged, notify the appropriate carrier immediately. If undamaged, open the package and inpect the device for obviou damage. eturn damaged product. Tool (not provided): Appropriate Allen wrench 3/16" open-end wrench Screwdriver Training: Intaller mut be a qualified, experienced technician. Thi thermotat may be mounted in any poition on any urface not ubjected to exceive vibration or extreme ambient temperature. To emove over The cover i held on by friction and locked in place with a cover locking crew. The cover may be removed by looening the locking crew, gripping the left end of the cover, and pulling it forward away from the thermotat. Terminal are located under thermotat cover. Knockout for 1/2" conduit connector at top and bottom of cae. Make all electrical connection in accordance with job wiring diagram and in compliance with national and local electrical code. Ue copper wire only. F-18783-5 opyright 2009 Schneider Electric All ight eerved. 3
ulb Mounting The remote ening bulb may be mounted in duct or liquid line. Outdoor Intall with AT-211 kit a hown in Figure-5. 1. Mount bulb to outide wall or urface with bulb clip. 2. Place hield over bulb and faten to mounting urface. Shield lip Duct Figure-5 Outdoor ulb Mounting. Intall bulb with AT-208 kit a hown in Figure-6 below. ut 3/4" Dia. Hole in Duct Sealing Gaket (AT-208) ut 7/8" Dia. Hole in Duct Sealing Gaket (AT-208) Support Spring on apillary Straight ulb Support Spring on apillary oiled ulb Mounting racket (AT-208) Mounting racket (AT-208) Figure-6 Duct ulb Mounting. Liquid Line and Tank 1. Intall AT-201 or AT-203 bulb well. 2. Intall thermal bulb and tighten ealing buhing. 3/4" MNPT Fitting of AT-201 or AT-203 Pipe Tee ulb Well AT-201 or AT-203 ulb Sealing uhing Part Number Application Limitation at 250 F Fluid Temp. (Max. 350 F) Max. ecom. Velocity (FPS) Max. ecom. Static Preure (pig) AT-201 11 250 AT-203 20 500 Figure-7 Liquid Line and Tank ulb Mounting. ulb Well Intallation Limitation Straight Pipe Mounting FLOW Tee Mounting F L O W Tee Mounting F L O W Elbow Mounting Figure-8 ulb Well Intallation Limitation. FLOW Note: Angle mut not allow end of well to contact ide of pipe. 4 opyright 2009 Schneider Electric All ight eerved. F-18783-5
ALIATION: SINGLE STAGE THEMOSTATS T-202 Adjutment ut 1 ut 2 ut 3 Figure-9 Adjutment of Single Stage Thermotat. alibration Procedure The dial etting determine the operating point of the thermotat. It may be locked in place by tightening the receed Allen et crew in the top of the dial haft (ee ut 1 in Figure-9). The differential between the two contact of the SPDT witch i eaily adjuted by mean of the differential adjutment crew on the thermotat arm (ee ut 2 in Figure-9). Thi adjutment crew regulate the ditance that the thermotat arm i required to move to trip from one contact to the other. Adjutable from 1 to 15. Factory et at 2. After differential adjutment in the field, the calibration crew (ee ut 3 in Figure-9) may be ued to re-calibrate the control a follow: 1. Immere the ening bulb for about 10 minute in a medium of known temperature. 2. Turn dial to etting correponding to bulb temperature. 3. Turning calibrating crew to the right (W) lower control point temperature, and turning to the left (W) raie control point temperature. Turn the calibrating crew W or W a required until the witch click. 4. otate the calibrating crew in the oppoite direction until witch click again. 5. Set calibrating crew half way between point where witch click. (One full turn of calibrating crew repreent approximately 12.) alibrating Screw Thermotat Arm Adjutment Screw Screw over Screw ellow Plunger Tenion Spring Spring Terminal lock Plunger Spring Thermal Element Inulator Figure-10 Part Identification of Single Stage Thermotat. F-18783-5 opyright 2009 Schneider Electric All ight eerved. 5
ALIATION: TWO STAGE THEMOSTATS T-252 and T-271 Adjutment The dial etting determine the operating point of the low tage witch. It may be locked in place by tightening the receed Allen et crew in the top of the dial haft (ee Figure-9). The differential between the and contact of the SPDT witche i eaily adjuted by moving the contact pring on the thermotat arm (ee Figure-12). The differential may be varied by looening the differential nut and liding the contact pring to the left to increae the differential (or to the right to decreae the differential). Thi varie the tenion brought to bear on the witch trip pin and adjut the differential between approximately 1.5 F and 7 F. Factory et at minimum. Each diviion repreent approximately 1 F. Thi adjutment may have ome effect on the differential between tage and therefore hould be the firt adjutment made in reetting the differential of the control. between Stage Figure-11 Adjutment of Two Stage Thermotat. The differential between high and low tage i eaily adjuted by looening the lock crew and rotating the eccentric tud (ee Figure-12), which phyically change the ditance between the trip pin on the high tage and low tage witche. Turning thi eccentric tud W decreae differential while turning W increae differential. Adjutable between approximately 0 F and 20 F. Factory et at 3 F. Each diviion equal approximately 5 differential between tage. alibrating Screw between Stage Eccentric Stud Screw Lock Screw Nut High Stage Aembly ellow Plunger ontact Spring Low Stage Aembly Figure-12 Adjuting between Stage. 6 opyright 2009 Schneider Electric All ight eerved. F-18783-5
alibration Procedure After differential adjutment have been made, the unit hould be calibrated a follow: 1. Immere the ening bulb for about 10 minute in any medium of known temperature. 2. Turn dial to etting correponding to bulb temperature. 3. Turn calibration crew (ee Figure-12) until the witch actuating point, a indicated by the dial of the low tage witch, traddle the bulb temperature. For example, if differential of the witch i et at 2 F and bulb temperature i 70 F, the reading for and witch action on the low tage witch would be 69 F and 71 F, repectively. 4. If thermotat calibration point i low, turn calibration crew lightly in a W direction. If high, turn lightly in W direction. 5. To check differential between tage: a. Move dial well above calibration point. b. Start turning dial lowly toward calibrating temperature until the low tage witch jut click (make to ). c. ecord dial reading at thi point. d. ontinue turning dial in ame direction until the high tage witch click (make to ). e. ecord dial reading at thi point. f. The difference between the two recorded temperature i the differential between tage. For example, if the low and high tage witch jut click (make to ) at 71 F and 77 F, repectively, then the differential between tage i 6 F. Inulator Screw Thermotat Arm Tenion Spring Plunger Spring High Stage High Stage Poitioning Plate High Stage Terminal lock Low Stage Low Stage Terminal lock Thermal Element Inulator Figure-13 Part Identification of Two Stage Thermotat. F-18783-5 opyright 2009 Schneider Electric All ight eerved. 7
ALIATION: THEE STAGE THEMOSTATS T-282 Adjutment Figure-14 Adjutment of Three Stage Thermotat. alibration Procedure The dial etting determine the operating point of the low tage witch. It may be locked in place by tightening the receed Allen et crew in the top of the dial haft (ee Figure-9). The differential between the and contact of the SPDT witche i eaily adjuted by moving the contact pring on the thermotat arm (ee Figure-15). The differential may be varied by looening the clamp nut and liding the contact pring to the left to increae the differential of all three witche (or to the right to decreae the differential). Thi varie the tenion brought to bear on the witch trip pin and adjut the differential between 2 F and 7 F (±0.5 F). Factory et at minimum. Each diviion repreent approximately 1 F. Thi adjutment may have ome effect on the differential between tage and therefore hould be the firt adjutment made in reetting the differential of the control. between Stage The differential between the low tage and middle tage i eaily adjuted by turning the middle tage adjutment crew (ee Figure-15) W to decreae differential and W to increae differential. Factory et at 3 F. The differential between high and middle tage i eaily adjuted by looening the lock crew and rotating the eccentric tud (ee Figure-15), phyically changing the ditance between the trip pin of the high and middle tage witche. Turning thi eccentric tud W decreae differential and turning W increae differential. The total differential available between the low and high tage i adjutable between 0 F and 20 F. The differential between the low, middle, and high tage can be varied but the total may never exceed 20 F. For example, if the differential between the low and middle tage i et at 12, then 8 F i the maximum differential that can be obtained between the middle and high tage. After differential adjutment have been made, the unit hould be calibrated a follow: 1. Immere the ening bulb for about 10 minute in any medium of known temperature. 2. Turn dial to etting correponding to bulb temperature. 3. Turn calibration crew (ee Figure-15) until the low tage witch actuating point (indicated by the dial) traddle the bulb temperature. For example, if bulb temperature i 70 F, turn calibrating crew until low tage witch actuating point (click) are an equal number of degree from 70 F, namely 68 F and 72 F. If dial etting i higher than actual bulb temperature, turn calibrating crew lightly in a W direction. If dial etting i lower than bulb temperature, turn crew in a W direction. 4. To check differential between tage: a. Turn dial well above calibration point. b. Start turning dial lowly toward calibration point until the low tage witch jut click (make to ) and note dial reading at thi point. c. ontinue turning dial in the ame direction until middle tage witch click (make to ) and note dial reading at thi point. 8 opyright 2009 Schneider Electric All ight eerved. F-18783-5
d. ontinue moving dial in ame direction until high tage witch jut click (make to ) and note dial reading at thi point. e. The difference in dial reading, a noted, indicate the differential between tage. For example, if the high, middle, and low tage click (make to ) at 71 F, 77 F, and 84 F, repectively, then the differential between the high and middle tage i 6 F (77 71) and between the middle and low tage i 7 F (84 77). Total differential between the low and high tage i then 13 F (84 71). N O T E If differential between tage i changed after the intrument i calibrated, the calibration ha to be rechecked to make certain that the change in differential did not affect the calibration. echeck calibration point (tep 3). High Stage lamp Nut Inulator etween Eccentric Stud Lock Screw alibration Screw Middle Stage Terminal lock Screw Thermotat Arm High Stage Terminal lock over Screw ontact Spring Tenion Spring Plunger Spring Low Stage Terminal lock Thermal Element Middle Stage Middle Stage Adjutment Screw Low Stage (Fixed) Figure-15 Part Identification of Three Stage Thermotat. F-18783-5 opyright 2009 Schneider Electric All ight eerved. 9
ALIATION: FOU STAGE THEMOSTATS T-288 Adjutment The dial (a) etting (ee Figure-17) determine the operating point of the firt, or low, tage witch. It may be locked in place by tightening the receed Allen et crew in the top of the dial haft (ee Figure-16). alibration Procedure Figure-16 Adjutment of Four Stage Thermotat. between e The differential between the and contact of the SPDT witche i eaily adjuted by moving the differential contact pring (b) on the thermotat arm (c) (ee Figure-17). The differential may be varied by looening the differential nut (d). Ue a 5/16" open-end wrench, and lide the contact pring to the left to increae the differential of all four witche (or to the right to decreae the differential). Thi varie the tenion brought to bear on the witch pin and adjut the differential between 3 and 7. ( factory et at 3 minimum.) Each diviion on the thermotat arm repreent approximately 1. Thi adjutment may have ome effect on the differential between tage and therefore hould be the firt adjutment made in reetting the differential of the control. between Stage The differential between the firt and econd tage witche i eaily adjuted by turning the econd tage adjutment crew (AA) (ee Figure-17). Ue a 3/16" open-end wrench, turning to the left to decreae the differential and to the right to increae the differential. ( i factory et at 3 minimum.) The differential between the econd and third tage witche i adjuted by turning the third tage differential adjutment crew () to the right to decreae the differential and to the left to increae the differential. ( i factory et at 3 minimum.) The differential adjutment between the third and fourth (or high) tage witche i accomplihed by looening the lock crew () and rotating the eccentric tud, which i jut to the left of the lock crew, thereby phyically changing the ditance between the trip pin of the firt and fourth tage witche. Turning thi eccentric tud W decreae the differential and turning it W increae the differential. The total differential between the firt and fourth tage i adjutable between 0 and 20. The differential between the firt, econd, third, and fourth tage may be varied but the total may never exceed 20. For example, if the differential between the firt and econd tage i et at 4 and the differential between the econd and third tage i et at 6, then 10 i the maximum differential that can be obtained between the third and fourth tage. The ue of tet light i trongly uggeted. However, a they may not alway be available, the control hould be calibrated a follow: 1. Immere the ening bulb for about 10 minute in any medium of known temperature before proceeding. (A pail of water may be ued and temperature determined with an accurate thermometer). 2. Turn regulating knob to etting correponding to bulb temperature. 3. Turn calibrating crew (DD) (ee Figure-17), uing a 3/16" open-end wrench, either to the right or to the left, until the firt tage witch actuating point traddle the bulb temperature (indicated by the dial). For example, if the bulb temperature i 70, turn the calibrating crew until the firt tage witch actuating point (click) are an equal number of degree from 70, namely 68 and 72. 10 opyright 2009 Schneider Electric All ight eerved. F-18783-5
4. To check differential between tage: a. Turn regulating knob well above calibration point. b. Start turning know lowly toward calibration point until the firt tage witch jut click (make to ) and note dial reading at thi point. c. ontinue turning knob in ame direction until the econd tage witch click (make to ) and note dial reading at thi point. d. ontinue turning knob in the ame direction until the third tage witch click (make to ) and note dial reading at thi point. e. Again, turn knob in the ame direction until the fourth tage witch jut click (make to ) and note dial reading at thi lat point. f. The difference in dial reading, a noted, indicate the differential between tage. For example, if the fourth, third, econd, and firt tage click (make to ) at 84, 80, 77, and 71, repectively, then the differential between the fourth and third tage i 4 (84 80), between the third and econd tage i 3 (80 77), and between the econd and firt tage i 6 (77 71). Total differential between the firt, or low, tage and the fourth, or high, tage i then 13 (84 71). 5. If it i deired to raie or lower all four witch action, and the differential between all tage i atifactory, turn the calibrating crew to the left to raie the etpoint and to the right to lower the etpoint. All four witche will retain their differential and will remain in equence. N O T E If differential between tage i changed after the control ha been calibrated, the calibration will have to be rechecked to make certain that the change in differential did not affect the calibration. echeck calibration point (tep 1, 2, and 3). Ue caution in handling thi intrument and when changing differential. arelene can reult in erratic operation. (a) Third Stage Fourth Stage Nut (d) Third Stage Adjutment Screw () Screw alibrating Screw (DD) Thermotat Arm (c) over Screw ellow Plunger Tenion Spring Plunger Spring Fourth Stage Poitioning Plate Lock Screw () Terminal lock ontact Spring (b) Thermal Element Firt Stage (Fixed) Second Stage Second Stage Adjutment Screw (AA) Figure-17 Part Identification of Four Stage Thermotat. F-18783-5 opyright 2009 Schneider Electric All ight eerved. 11
DIMENSIONAL DATA Note: 3/4" (19 mm) above thi point mut be allowed for min. bend radiu of capillary tubing. 1-5/16" 1-7/16" 1-1/8" 4-5/16" 5/8" 1/4" Dia. 1-7/8" 5-3/4" 1/4" Dia. A 5/8" 1-7/8" 11/16" 11/16" 15/16" Stage Dimenion (inche) A Single, two 2-11/16 2-1/2 5-1/4 Three, four 4-9/16 4-3/8 7-1/8 Figure-18 Mounting Dimenion. On October 1t, 2009, TA became the uilding buine of it parent company Schneider Electric. Thi document reflect the viual identity of Schneider Electric, however there remain reference to TA a a corporate brand in the body copy. A each document i updated, the body copy will be changed to reflect appropriate corporate brand change. opyright 2009, Schneider Electric All brand name, trademark and regitered trademark are the property of their repective owner. Information contained within thi document i ubject to change without notice. F-18783-5 Schneider Electric 1354 lifford Avenue P.O. ox 2940 Love Park, IL 61132-2940 www.chneider-electric.com/building