Johnson Controls T-4002 Adjusting Instructions Download Page 8 | Manualshive

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8 T-4000 Technical Bulletin

Notes

Controls Group
507 E. Michigan Street
P.O. Box 423
Milwaukee, WI 53202

Printed in U.S.A.

Archived Document

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Summary of Contents for T-4002

Page 1: ...in test port fitting which accepts a hypodermic needle test probe and gage X 200 140 and G 2010 11 On older models the test port cap screw must be removed to accept a screw in test gage X 200 19 For these units a test port fitting T 4000 615 can be ordered All low volume output thermostats have hypodermic needle test points For units that require a screw in gage remember to replace the test port c...

Page 2: ...sure returns to 3 psig 6 The change in dial setting divided by the 10 psig 70 kPa change in master pressure 14 psig 4 psig 10 psig is the actual range of readjustment If this is not the desired range move the range of readjustment slider sensitivity slider in Fig 1a toward the control port to decrease or away from the control port to increase the range of readjustment Readjust the slider screw to ...

Page 3: ...roceed as follows 1 Remove the T 4054 from the mounting bracket and pull it away from the wall so the deadband adjusting screw on the back of the instrument is exposed see Fig 3 2 Turn the screw clockwise to increase or counter clockwise to decrease the deadband pressure until the gage reads the desired pressure Approximately one half turn will produce a 1 PSI 7 kPa change in deadband pressure 3 R...

Page 4: ...use the proper element and supply pressure for the particular application The T 4506 is furnished with DAY and NIGHT labels which can be applied to the appropriate element Day Set Point Adjustment See Fig 5 1 Insert the test gage 2 Furnish 15 psig supply pressure for day control lower dial 3 Note the ambient temperature in the space 4 Turn the lower set point dial to that temperature 5 Turn the lo...

Page 5: ...ture in the space 4 Turn the lower set point dial to that temperature 5 Turn the lower calibration screw on the heating element until the output pressure is at the mid spring range of the controlled device 6 Turn the lower set point dial to the desired heating set point 5 Turn the calibration screw on that element until the output pressure to the heating apparatus is at the mid spring range of the...

Page 6: ...e supply pressure to 15 psig and rotate the lower dial to produce approximately 5 psig 35 kPa on the output gage 4 Increase the supply pressure to 20 psig and rotate the upper dial to produce approximately 15 psig on the output gage 5 Set the supply pressure to the desired switchover point 6 Slowly turn the switchover adjusting screw see Fig 8 clockwise to increase or counterclockwise to decrease ...

Page 7: ...T 4000 Technical Bulletin 7 Notes Archived D ocum ent ...

Page 8: ...8 T 4000 Technical Bulletin Notes Controls Group 507 E Michigan Street P O Box 423 Milwaukee WI 53202 Printed in U S A Archived D ocum ent ...

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