Honeywell TP9600 User's Manual
Contents
1. 6 7 8 SETPOINT BELOW SETPOINT A ABOVE SETPOINT DEVIATION IN SPACE TEMPERATURE DEGREES F C C3536 Fig 2 TP970C Space Temperature vs Branchline Pressure 44 TP970D MINIMUM THROTTLING RANGE BRANCHLINE PRESSURE PSI kPa 60 9 5F 2 8C 8 TP970D MAXIMUM 7 THROTTLING 40 6 RANGE 20F 11 1C 30 3 4 S S SETPOINT 10 nib y 75 5 2 5 YT 5 75 10 12 5 15 0 LE EAT T T 8 7 9 9 3 1 0 2 a 5 6 7 8 SETPOINT BELOW SETPOINT M ABOVE SETPOINT DEVIATION IN SPACE TEMPERATURE DEGREES F C C3537 Fig 3 TP970D Space Temperature Vs Branchline Pressure TP970C DIRECT M B ACTING HEATING COOLING VALVE VALVE 2 TO 5 PSI 9 TO 13 PSI 14 TO 34 kPa 62 TO 90 kPa SPRING SPRING VALVE OPEN 4 DEGREES F 2 2 DEGREES C ZERO ENERGY VALVE BAND CLOSED 72F 74F ap 20C 22C 24C THERMOSTAT SETTING TR 10 DEGREES F 5 6 DEGREES C C3538 Fig 4 Typical TP970C Operation Using Selected Spring Range Valve Operators TP970C DIRECT ACTING RP971A 3 PSI RANGE SET 10 PSI 68 9 kPa START RP971A 3 PSI SPAN SET 3 9 PSI 26 9 kPa START HEATING COOLING VALVE VALVE 3 TO 10 PSI 3 TO 10 PSI 21 TO 68 9 kPa 21 TO 68 9 kPa VALVE OPEN 4 DEGREES 2 2 anaes C ZERO ENERGY BAND VALVE CLOSED A 68F 72F 74F 76F 78F 20C 22C 24C THERMOSTAT SETTING TR 10 DEGREES F C3539 5 6 DEGREES C Fig 5 Typical TP972. ADHESIVE PAPER DOT ON THE THROTTLING PLATE Fig 17 Internal View of Thermostat M11384 Setpoint Indicator Adjustment Replacement NOTE Dual temperature thermostats require removal of only one of the bimetal assemblies Remove the setpoint indicator Fig 17 by prying it off the indicator post with a small screwdriver Remove the thermometer bimetal Fig 17 by lifting the plate to which the scaleplate is attached at the hex of the bimetal mounting post Bend the scaleplate locking tabs Fig 17 up and compress the scaleplate mounting posts Fig 17 together with the thumb and forefinger to free the scaleplate from the holding notches in the post Remove and replace setpoint indicator adjustment Fig 17 using caution not to damage or distort the bimetal sensing element s On models with DAY NITE temperature setpoint wheel located under the right sensing element see the NOZZLE THROTTLING PLATE and BIMETAL ASSEMBLY REPLACEMENT section for removal of the bimetal and DAY NITE scale prior to removing the setpoint indicator adjustment Reassemble in reverse order and recalibrate if required It is not necessary to re engage the scaleplate locking tabs Fig 17 in the holding notches of the scaleplate mounting posts as they are primarily for shipping purposes Nozzle Throttling Plate and Bimetal Assembly Replacement 1 2 15 Remove cover Remove the thermometer bimetal temperature indicator and scal
3. TP971B 2043 20 or 25 TP971B 1050 TP971B 2050 138 or 172 Includes 25 ft 7 6m Twin Tubing with 14004407 121 Cover TP971C 1009 TP971C 2009 DA 13 or 18 With Secondary Branch TP971C 1017 TP971C 2017 Heating 15 30 C 90 or 124 3 Pipe DAY Range TP971C 2025 DA 60 90 F 16 or 21 Cooling DAY Range 110 or 145 TP971C 2041 3 Pipe 20 or 25 TP971D 2007 DA Cooling 138 or 172 NITE Set Up 75 to 100F 2 Pipe TP971E 2004 RA Cooling 13 or 18 2 Pipe 90 or 124 All DAY NITE two temperature pilot bleed TP971C 1025 TP971C 1041 TP971D 1007 TP971E 1004 75 7134 1 4 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS Table 3 TP972A Thermostat Specifications Supply Air Degrees Old New ETT Right Pressure Throttling Model No Model No Bimetal Bimetal psi kPa Range Special Features TP972A 1002 TP972A 2002 60 90 F 13 Cooling or Adusabe TP972A 1010 TP972A 2010 mm 30 C 18 Heating 24R l TP972A 1028 TP972A 2028 60 90 F 90 or 124 1 1 5 6 C Universal Modernization Kit with Universal Window Cover TP972A 1036 TP972A 2036 60 90 F Energy Conservation Separate Setpoints Cooling 50 75 F Honeywell Thermostat Modernization Kit Heating with Universal Window Cover 78 90 F Separately Limited Control Range LCR Cooling Adjustable 60 72 F 2 10 F Heating 1 1 5 6 C 75 90 F Setpoint Stop at 75F Minimum Cooling 50 75 F 16 Cooling or
4. 1008 TP9633B 1007 OPERATION TP970A B and TP9600A B When using a TP970A or TP9600A Fig 1 in heating applications with a normally open valve a fall in temperature lowers Branchline Pressure BLP to the valve THis lower BLP provides proportional valve action matching the existing load requirements When a TP970B or TP9600B is used in a cooling application a rise in temperature causes the TP970B or TP9600B to lower BLP The energy conservation models limit control temperature to a maximum heating or minimum cooling of 72F 24C TP970A B OR TP9600A B SUPPLY C3535 1 Fig 1 TP970A B and TP9600A B Typical Operation TP970C and D The TP970C and D with wide throttling range Fig 2 and 3 allow use of heating and cooling valve assemblies with either selected spring ranges Fig 4 or ratio relays Fig 5 to achieve a ZEB range 75 7184 1 TP973A 2076 TP973B 2066 TP973A 2076 TP973B 2066 Various ZEB ranges heating control points and cooling control points are obtained by selecting the appropriate thermostat setpoint throttling range and spring range or ratio relays TP970C MINIMUM 11 THROTTLING RANGE T a 100 Y 80 u 80 2 70 10 5F 2 8C gt 9 P cot 8 Me 60 7 TP970C MAXIMUM uj 6 THROTTLING RANGE W 40 iai 5 20F 11 1C ba o 20 3 z 0 2 SETPOINT t 10 sl 125 10 75 5 25 25 5 75 10 125 15 0 8 7 6 5 4 3 2 1 1 2 3 4 5
5. 110 or 145 TP971A 1060 TP971A 2060 60 90 F Includes 14004406 901 Cover DAY Range TP971A 1078 No 60 90 F Adjustable 5 Replacement 50 75 F 25 F 2 8 13 9 C DAY 2 10 F 1 1 5 6 C NITE TP971A 1086 TP971A 2086 60 90 F 20 or 25 Adjustable TP971A 1094 TP971A 2094 DAY Range 138 or 172 2 10 F Includes 25 ft 7 6m Twin Tubing and 1 1 5 6 C 14004407 121 ce TP971A 1102 TP971A 2102 13 or 18 or 16 Convertastat Kit with Universal Window or 20 90 or Cover 124 or 110 or 145 All DAY NITE two temperature pilot bleed continued 3 75 7184 1 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS Table 2 TP971A E Thermostat Specifications continued Supply Air Degrees Old New Pressure Throttling Model No Model No Description psi kPa Range Special Features TP971A 2110 DA Heating 60 90 F 13 or 18 Adjustable 2 Quick Mount with 14004407 300 Cover 2 Pipe DAY Range 10 F 1 1 5 6 C TP971A 2128 90 or 124 Quick Mount with 14004407 121 Cover TP971A 2136 Quick Mount with 14004407 111 Cover TP971A 2144 Quick Mount with 14004406 300 Cover TP971A 2151 Quick Mount with 14004406 121 Cover TP971A 2169 Quick Mount with 14004406 111 Cover TP971B 2001 RA TP971B 2019 Heating 16 or 21 2 Pipe 110 or 145 TP971B 1027 TP971B 2027 15 30 C 13 or 18 DAY Range 90 or 124 TP971B 1001 TP971B 1019 TP971B 1035 TP971B 2035 60 90 F 16 or 21 Includes 14004406 901 Cover DAY Range 110 or 145 TP971B 1043
6. AND TP9600 SERIES PNEUMATIC THERMOSTATS Table 11 TP970 Series Thermostat Accessories Airhead Tube Spring assembly 6 inch main red LT Cable Assembly S O One pipe 8 ft 2 5m poly sheathing LT Modernization Fitting Universa LT Mounting Ring SS Flush 14004300 001 Setpoint Indicator Adjustment Knob Retainer Kit Used to prevent setpoint knob breakage on TP970 and TP973 thermostats with metal covers Kit contains two socket head screws an Allen key two round spacers and a bar The bar fits across the bottom of the thermostat to shield setpoint knob 14002430 001 Thermostat Heavy Duty Guard 14002424 002 Wall Box Aspirating with 8 ft 2 5m 5 32 in O D plastic tubing AK3970 Cover for Aspirating Wall Box LT Wall Box Deep SS O Two Pipe 8 ft 2 5m 5 32 in plastic tubing assembly modified 1985 L Wall Box Shallow S O O One Pipe 8 ft 2 5m copper tubing assembly modified 1985 One Pipe 8 ft 2 5m 5 32 in plastic tubing assembly modified 1985 Two Pipe 8 ft 2 5m copper tubing assembly modified 1985 Two Pipe 8 ft 2 5m 5 32 in plastic tubing assembly modified 1985 po Wall Plates 14002053 001 Mounting Plate Assembly Before 1985 this was a metal plate requiring an airhead Now it is plastic and includes tube connection barbs Steel Stiffener Plate for stronger support of 14002053 001 75 7134 1 22 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS T
7. Heating 21 Heating 110 or 145 TP972A 1093 No Replacement 78 90 F 13 Cooling or Limited Control Range LCR Cooling 18 Heating TP972A 1101 No Replacement 60 72 F 90 or 124 Universal Limited Control Range LCR Heating Modernization Kit TP972A 1119 No Replacement 78 90 F 13 Cooling or Limited Control Range LCR Cooling 18 Heating pee 1127 No Replacement 55 65 F 90 or 124 Universal Limited Control Range LCR Heating Modernization Kit d 1143 TP972A 2143 D A 60 90 F 14 Heating or Separately Specifically for replacing Johnson 19 Cooling Adjustable Cooling Heating Thermostats 97 or 131 2 10 F TP972A 1150 TP972A 2150 S TP972A 1168 TP972A 2168 TP972A 1176 TP972A 2176 TP972A 1044 TP972A 2044 TP972A 1051 No Replacement TP972A 1077 No Replacement TP972A 1085 No Replacement 15 30 C Cooling 13 Cooling or 1 1 5 6 C Energy Conservation Separate Setpoints 12 24 Heating 18 Heating 90 or 124 RA 60 90 F 16 Cooling or Cooling 21 Heating 50 75 F 110 or 145 RA Heating 20 Cooling or 25 Heating 138 or 172 13 Cooling or Includes 14004406 901 Cover Separate 18 Heating Setpoints 60 90 F 90 or 124 Includes Universal Window Cover TP972A 1184 TP972A 2184 TP972A 2192 ha TP972A 2200 14 Cooling or 19 Heating 97 or 131 All single temperature twO pipe two element automatic changeover and cooling heatin
8. and replace the cover TP972A and TP9620A 1 With 13 psi 90 kPa main air pressure turn the DAY SUMMER left calibration screw Fig 15 until the gage reads 0 psi 0 kPa 2 Turn the calibration screw in the opposite direction until the gage reads 8 1 psi 55 7 kPa 3 With 18 psi 124 kPa main air pressure repeat Steps 1 and 2 using the NITE WINTER right calibration screw Fig 15 The TP972 and TP9620 are now calibrated 4 Remove the gage and replace the cover TP973A B and TP9630A B If the TP973A B and TP9630A B are not properly calibrated but the remainder of the system is operating properly turn the calibration screw until the TP973A B or TP9630A B performs as in Step 2 under CALIBRATION CHECK TP974A Field calibration of the TP974A is not recommended TP978A E If a TP978 thermostat is not properly calibrated but the remainder of the system is operating properly turn the calibration screw until the thermostat performs as in Step 2 under CALIBRATION CHECK TP979A C 1 2 Turn the calibration screw Fig 15 until the gage reads 0 psi 0 kPa Turn the calibration screw in the opposite direction until the gage reads 8 1 psi 55 7 kPa The thermostat is now calibrated The setpoint indicator and thermometer should be within 1 degree F 0 56 degree C of each other Remove the gage and gage adaptor and replace the cover Turn the setpoint indicator adjustment until the se
9. four Phillips head screws which fasten the restrictor block and filter Fig 19 to the back of the thermostat 2 Carefully remove the restrictor block assembly plate Ms TYPICAL restrictor filter gasket s PNEUMATIC 3 Replace the restrictor block and filter ASSEMBEY a Align the appropriate gasket over the corresponding holes in the thermostat GASKET b Insert the filter into the gasket until it bottoms c Position the restrictor block FILTER d Align the other gasket on the restrictor block e Position the plate f Replace screws and tighten cci A GASKET pase PLATE E m n SHS M12206 Fig 19 Restrictor Block and Filter Replacement 75 7134 1 16 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS Day Auto Lever Assembly Replacement Switchover Adjustment Spring Replacement 1 Remove the three Phillips head screws that fasten the 1 Using a screwdriver carefully remove the screw and lever mechanism to the back of the thermostat Fig switchover adjustment spring Fig 21 See PARTS 20 LIST in PARTS and ACCESSORIES section for 2 Lift off the cover plate and remove the lever with available springs attached seal 2 Replace the spring then carefully position and replace 3 Lift the spring from the post the screw 4 Install the replacement parts in reverse order 3 Calibrate the thermostat 5 Replace and tighten screws 14001992 001 16 21 PSI CHANGEOVER Fig 21 Switchover Adjustment Spring R
10. 0C Operation Using Ratio Relays TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS TP971A B D E and TP9610A B These thermostats provide a BLP proportional to the ambient temperature In a heating application with a normally open valve Fig 6 a fall in room temperature causes the thermostat to lower the BLP to the valve providing a proportional action matching the existing load requirement When the supply air pressure is 13 psi 90 kPa the thermostat controls at the normal DAY setting When the supply air is switched to 18 psi 124 kPa the thermostat controls at the reduced NITE setting Models with 16 or 21 psi 110 or 145 kPa pressure are available The TP971D is the same as the TP971A with the addition of NITE setup The TP971E is the same as the TP971B with the addition of NITE setup The manual reset lever protrudes through the DAY AUTO slot in the cover The lever is used to manually reset the thermostat from AUTO to DAY to restore day operation The lever automatically returns to the AUTO position when the supply air reaches DAY pressure TP971A OR MB TP9610A DAY 13 PSI 90 kPa NITE 18 PSI 124 kPa HOT WATER OR STEAM SUPPLY 3540 1 Fig 6 TP971A and TP9610A Typical Operation TP971C The TP971C can be used with a unit ventilator to control a heating valve outdoor and return air dampers and blower motor Fig 7 When supply air pressure is 13 psi 90 kPa the TP971C controls the valv
11. 1010 A1028 A1044 A2002 A2010 A2028 A2044 TP973B1009 B1017 B1025 B1108 14004447 003 Setpoint Cam Assembly TP971A C D TP972A1168 A2168 A2176 14004447 004 Setpoint Cam Assembly TP971B E TP972A1036 A1077 A1085 A1150 A1184 A2036 A2150 e 14004447 005 Setpoint Cam Assembly TP970B1044 TP972A1051 A1101 14004447 006 Setpoint Cam Assembly TP970A1061 A1087 A2087 ES 2 S E 14004447 007 Setpoint Cam Assembly TP972A1093 A1127 14004447 008 Setpoint Cam Assembly TP972A 1119 14004429 001 Setpoint Cam TP973A1035 A1043 A1050 A1068 A1076 A1084 A1092 A1100 A2068 A2076 A2084 A2092 A2100 14004429 002 Setpoint Cam TP973B1033 B1041 B1058 B1066 B1074 B1090 B2066 B2074 B2090 Screw No 4 3 16 pan head 14004460 001 Nozzle Throttling Plate Bimetal Assembly DA Left Side TP970A TP971A C D TP972A TP973A 14004460 002 Nozzle Throttling Plate Bimetal Assembly RA Left Side TP970B TP971B E TP972A TP973B 14004460 003 Nozzle Throttling Plate Bimetal Assembly DA Right Side TP971A C TP972A 14004460 004 Nozzle Throttling Plate Bimetal Assembly DA TP970C 14004460 005 Nozzle Throttling Plate Bimetal Assembly RA TP970D 8 14004460 006 Nozzle Throttling Plate Bimetal Assembly DA Right Side TP971D 14004460 007 Nozzle Throttling Plate Bimetal Assembly RA Right Side TP971E Antihum Spring Cone o Replace the Setpoint C
12. 70 AND TP9600 SERIES PNEUMATIC THERMOSTATS SPECIFICATIONS Maximum Safe Air Pressure 25 psi 172 kPa Maximum Safe Temperature 150F 66C See Tables 1 though 6 for additional specifications These tables represent the direct replacements of existing thermostats at the time of the introduction of the 2000 series of thermostats For replacement parts see PARTS and ACCESSORIES Table 1 TP970A D Thermostat LLL Table 1 TP970A D Thermostat Specifications O O Old Model No TP970A 1004 TP970A 1012 TP970A 1020 TP970A 1038 Model No TP970A 2004 TP970A 2012 TP970A 2020 TP970A 2038 axem onsen swan mI LL 60 90 F 4079 F 15 30 C 60 90 F 60 90 F Controls at 72 F Maximum 60 72 F 40 70 F 60 90 F 2 pan TP970A 1053 TP970A 2053 z GJ TP970A 1062 No Replacement TP970A 1087 TP970A 2087 TP970A 1095 TP970A 2095 TP970A 1103 TP970A 2103 TP970A 1111 TP970A 2111 TP970A 1129 TP970A 2129 TP970A 1137 TP970A 2137 TP970A 1145 TP970A 2145 TP970A 2152 TP970A 2160 TP970A 2178 TP970A 2186 TP970A 2194 TP970A 2202 TP970B 1002 TP970B 2002 RA 2 Pipe TP970B 1010 TP970B 2010 15 30 C TP970B 1028 TP970B 2028 60 90 F TP970B 1036 TP970B 2036 TP970B 1044 No 60 90 F Replacement Controls at 78 F Minimum All single temperature pilot bleed 75 7184 1 Supply Air Pressure psi kPa 18 124 Degrees Th
13. Honeywell TP970 and TP9600 Series Pneumatic Thermostats GENERAL The TP970 and TP9600 Series Pneumatic Thermostats are one two or three pipe proportioning thermostats with bimetal elements They are suitable for controlling dampers and or valves in HVAC systems APPLICATION TP970A D and TP9600A B The TP970 and TP9600 are single temperature pilot bleed two pipe thermostats The TP970A and TP9600A are used for heating Direct Acting DA the TP970B and the TP9600B for cooling Reverse Acting RA and the TP970C and D for heating cooling There are TP970A and B models with Limited Control Range LCR for energy conservation The TP970C and D have a wide throttling range capability allowing an adjustable Zero Energy Band ZEB between heating and cooling operations TP971A E and TP9610A B The TP971A E and TP9610A B are two temperature pilot bleed two pipe thermostats for DAY NITE operation with automatic switchover from mainline pressure The TP971C is a three pipe thermostat for unit ventilator DAY NITE application TP972A and TP9620A The TP972A and TP9620A are single temperature pilot bleed two pipe thermostats with cooling heating cycles and automatic switchover from mainline pressure The TP972A2143 is designed specifically for replacing Johnson cooling heating thermostats see SPECIFICATIONS section U S Registered Trademark Copyright 1997 Honeywell Inc All Rights Reserved SERVICE DATA
14. L STOPS NITE WINTER TEMPERATURE SETTING SETPOINT INDICATOR ADJUSTMENT DAY AUTO LEVER TP971 ONLY NOTE NOT ALL ADJUSTMENTS ARE ON ALL THERMOSTATS Fig 15 Thermostat Front View Cover Off Showing Controls and Indicators C3946 3 TP970C and D 1 Set the throttling range to value specified on the job drawing 2 Check the mechanical throttling range by turning the setpoint indicator adjustment to determine the difference in setpoint indicator readings when BLP reads 3 psi 21 kPa and 13 psi 90 kPa It may be necessary to turn the calibration screw to obtain this measurement 3 Reset the throttling range to within 2 degrees F 1 1 degrees C of the specified throttling range for accurate control If either the throttling range adjustment or calibration screw were changed recalibrate the thermostat 4 See TP970A and B beginning at Step 1 for the balance of TP970C and D calibration TP971A E and TP971A B 1 With 13 psi 90 kPa main air pressure turn the DAY SUMMER left calibration screw Fig 15 until the gage reads 0 psi 0 kPa 2 Turn the calibration screw in the opposite direction until the gage reads 8 1 psi 55 7 kPa 3 With 18 psi 124 kPa main air pressure rotate the NITE WINTER setpoint dial until the setting agrees with the indicated temperature 4 Repeat Steps 1 and 2 using the NITE WINTER right calibration screw Fig 15 The TP971 is now calibrated 5 Remove the gage
15. Pipe 60 90 F 18 124 Adjustable Includes 25 ft 7 6m Twin Tubing with 2 109F 1400406 121 Cover TP970B 1077 TP970B 2077 1 1 5 6 C Convertastat Kit with Universal Window Cover mw C e P w e E E Quick Mount with 14004407 300 Cover Quick Mount with 14004407 121 Cover Quick Mount with 14004407 111 Cover Quick Mount with 14004406 300 Cover TP970B 2127 Quick Mount with 14004406 121 Cover TP970B 2135 Quick Mount with 14004406 111 Cover TP970C 1000 TP970C 2000 DA 2 Pipe Adjustable Wide Throttle Range Allows Zero Energy 5 25F Band ZEB TP970C 1018 2 8 13 9C Universal Zero Energy Band ZEB LUNA Modernization Kit TP970D 1008 TP970D 2000 RA 2 Pipe Wide Throttle Range Allows Zero Energy Band ZEB TP970D 1016 Universal Zero Energy Band ZEB T Modernization Kit All single temperature pilot bleed Table 2 TP971A E Thermostat Specifications Supply Air Degrees Old New Pressure Throttling Model No Model No Description psi kPa Range Special Features TP971A 1003 TP971A 2003 DA Heating 60 90 F 13 or 18 Adjustable 2 Pipe DAY Range 90 or 124 2 10 F TP971A 1011 TP971A 2011 15 30 C 1 1 5 6 C DAY Range TP971A 1029 TP971A 2029 60 90 F 16 or 21 DAY Range 110 or 145 TP971A 1037 TP971A 2037 13 or 18 16 or Universal Modernization Kit 21 90 or 124 Honeywell Thermostat Modernization Kit 110 or 145 with Universal Window Cover TP971A 1052 TP971A 2052 15 30 C 16 or 21 DAY Range
16. TER SUPPLY C3542 1 Fig 8 TP972A and TP9620A Typical Operation with a Normally Open Water Valve Assembly Models are available that limit the cooling setpoint to a minimum of 75 or 78F the heating setpoint to a maximum of 72 or 75F They work with 13 18 16 21 25 20 19 14 or 20 25 psi changeover Some models are DA for both cooling and heating TP973A B and TP9630A B A fall in temperature at the TP973A or TP9630A causes the TP973A or TP9630A to lower BLP providing proportional control of existing load requirements for heating Fig 9 A rise in temperature at the TP973B or TP9630B causes the TP973B or TP9630B to lower BLP providing proportional control of existing load requirements for cooling 75 7134 1 10 TP973A OR TP9630A HOT WATER OR STEAM SUPPLY C3543 1 Fig 9 TP973A and TP9630A Typical Operation One Pipe Using External Restriction TP974A The TP974A Sensor Fig 10 provides a pneumatic output signal of 3 to 15 psi 21 to 103 kPa in direct relation to the sensed temperature allowing direct and remote readout of the temperature An RP908 or RP920 Controller is used with the TP974A to convert the output into a usable signal to operate a pneumatic valve damper or other equipment RP920 TEMP GAGE C3544A TP974 Fig 10 TP974 Typical Operation TP978E NOTE To vary the ZEB between heating and cooling operation adjust the setpoints on the TP978E A fall in temperature withi
17. TP973A B and TP9630A B The TP973A B and TP9630A B are one or two pipe bleed type thermostats for heating or cooling applications TP974A The TP974A is a pneumatic space temperature sensor for either one or two pipe applications It is suitable as a remote temperature indicator or as the sensor for a receiver controller TP978A E The TP978 is a dual element bleed type thermostat used in dual one pipe applications suitable for use with variable volume systems These thermostats may be used to control separate heating and cooling actuators in sequence with a Zero Energy Band ZEB for energy conservation The heating setpoint is limited to 73F 23C maximum and the cooling setpoint is limited to 77F 25C minimum Heating and cooling are available in both DA and RA configurations Except for the TP978E there are no upgraded replacements for the TP978 TP979A E The TP979 contains two cooling heating DAY NITE thermostats They are one or two temperature two pipe thermostats for independent proportioning control of heating and cooling Contents eT Te T 1 Applicaton E 1 Tse eT 2 Opratiom iilii aaea aaa a rae aaa aada adaa a EE 8 Maintenance enn a a re EE on EEE EEE 11 Lee E TTL 11 9r zr Tt 11 Calibration DEERE E E nennen 12 Troubleshooting sess 14 eT T MEL 15 Parts and Accessories eee 18 AGCCESSONIOS icit ctii ro er Hed eec e b eh E Fede vv aia deg 21 75 7134 1 TP9
18. able 12 TP970 Series Thermostat Covers Satin Chrome Part Number 14004406 XXX BC ME NEM MEN Window Insert ver Tiene ves honz ves ene ven pe None 300 800 Honeywell sepoi Thermometer ee L S ee ean xq a af E E E ase oe ee ES SY SS aone aone EUER R RE 60 70 80 9 ear 50 90 114 xr range Cool range Honeywell 60 90 F 60 70 80 9 coal ean reme e SS eE Raus pec iure ewe e ipei Tl e COOLER 123 WARMER Honeywell L 60 70 80 9 15 30 C 330 60 70 80 9 60 90 P o Honeywell When ordering use complete part number including three digit suffix 114004406 008 Cover also suitable for vertical mounting 23 75 7184 1 Table 13 TP970 Series Thermostat Covers Beige Plastic Part Number 14004407 XXX Open Closed X Open Closed Window Mounting Mounting Insert Vert Horiz Vert Horiz Vert Horiz Vert Horiz Mounting Mounting None 300 400 T 800 Honeywell f A i Setpoint Thermometer __ Oo o ERN 15 30 C 15 30 C 110 210 60 90 F 60 90 F 111 311 511 ll 60 70 80 9 15 30 C 60 90 F 113 ee Honeywell E 60 70 80 9 60 90 F 121 Honeywell L 60 70 80 9 When ordering use complete part number including three digit suffix 14004406 008 Cover also suitable for vertical mounting 14004407 XXX Covers are pai
19. am Assembly and Nozzle Throttling Plate Bimetal Assembly together tlf there is no antihum spring or cone there is an adhesive paper dot on the throttling plate continued 19 75 7134 1 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS Table 8 TP970 TP974 and TP9600 TP9630 Thermostat Repair Parts and Assemblies continued 14002051 001 Pneumatic Assembly TP970 TP973 Includes 10B and 10C below 14002102 004 Pneumatic Assembly TP974A Includes 10B and 10C below Tab and Screw TP974A Ea O lt N 1 10A 14004419 001 Gasket Restrictor block included with 14002374 XXX 1 TP973A B 4002374 005 Restrictor Block Assembly 0 005 restrictor 3 pipe TP971C 10D 4002374 001 Restrictor Block Assembly 0 005 restrictor 2 pipe TP970A D TP971A B D E TP972A 1 Restrictor Block Assembly 0 007 restrictor 2 pipe TP974A Switchover Spring Assembly silver 16 to 21 psi 110 to 145 kPa Switchover Spring Assembly gold 13 to 18 psi 90 to 124 kPa Switchover Spring Assembly blue 20 to 25 psi 140 to 175 kPa DAY AUTO Lever Assembly T Screw No 4 40 x 5 8 an head included with 14002374 XXX 12 Wall Plate Assembly with setscrews 14003454 001 2 Replace the Setpoint Cam Assembly and Nozzle Throttling Plate Bimetal Assembly together o 0 10E OF 1 tlf there is no antihum spring or cone there is an adhesive paper dot on the throttling plate TP978E See Figu
20. e and damper at the normal DAY setpoint When supply air pressure is 18 psi 125 kPa the TP971C closes the outdoor air damper and switches the blower from constant to automatic operation The TP971C then cycles the unit at reduced night setpoint Models with 18 or 21 psi 125 or 145 kPa pressure are available The manual reset lever protrudes through the DAY AUTO slot in the cover The lever may be used to manually reset the TP971C from AUTO to DAY to restore DAY operation including outdoor air damper operation The reset lever automatically returns to the AUTO position when the supply air reaches DAY pressure 75 7184 1 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS DISCHARGE AIR HEATING COIL 120V AC 50 60 HZ 13 18 PSI 90 124 kPa OUTDOOR AIR WA q RETURN AIR N C Fig 7 TP971C Typical Operation N O C3541 TP972A and TP9620A The standard TP972Aand TP9620A is RA for cooling and DA for heating A rise in temperature at the TP972Aand TP9620A with main air pressure at 13 psi 90 kPa causes the TP972Aand TP9620A to lower BLP opening the valve to control the temperature with chilled water A fall in temperature at the TP972Aand TP9620A with main air pressure at 18 psi 124 kPa causes the TP972Aand TP9620A to lower BLP opening the valve to control the temperature with hot water Fig 8 TP972A OR TP9620A 13 PSI 90 kPa RA 18 PSI 124 kPa DA HOT WATER CHILLED WA
21. e paper dot on the throttling plate across the hinge between the two rivets so that the dot is directly below the A in MAX printed on the bimetal If there is no antihum spring or cone Stick an adhesive paper dot on the throttling the adhesive paper dot has fallen off of plate as described above the throttling plate Air leak in restrictor block and filter Use a bubble solution to locate the leak and assembly repair it Replace the restrictor block assembly and filter Install Stiffener Plate 14004609 001 on the backplate Oil or moisture in lines Replace the restrictor block assembly and filter Also ensure that the air supply to the thermostat is dry and clean Slow response Inadequate air flow caused by a Replace restrictor block assembly and or partially clogged restrictor block filter assembly and or filter cartridge Thermostat instability System gain is too high Move throttling range adjustment toward MAX position and then recalibrate Inaccurate readings Inaccurate calibration Recalibrate thermostat Backplate over tightened Install Stiffener Plate 14004609 001 on the backplate Thermostat not switching Pressure at thermostat is incorrect Readjust compressed airline to proper over at changeover pressure switching pressure Switchover pressure in thermostat is Turn switchover adjustment screw to incorrectly calibrated recalibrate pressure for proper switching Branch line plug leaking Install Plug 14002172 Cann
22. eplacement c CAUTION THIS PIN IS FREE TO DROP OUT WHEN LEVER IS RELEASED M12205 Fig 20 DAY AUTO Lever Assembly Replacement 17 75 7184 1 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS PARTS AND ACCESSORIES Parts List TP970 TP974 and TP9600 TP9630 See Figures 22 and 23 and Table 8 for TP970 TP974 and TP9600 TP9630 Thermostat repair parts and assemblies A REPLACE THE SETPOINT CAM ASSEMBLY AND NOZZLE THROTTLING PLATE AND BIMETAL ASSEMBLY TOGETHER A IF THERE IS NO ANTIHUM SPRING CONE THERE IS AN ADHESIVE PAPER DOT ON THE THROTTLING PLATE M12210 A REPLACE THE SETPOINT CAM ASSEMBLY AND NOZZLE THROTTLING PLATE AND Fig 23 Dual Element Thermostat Exploded View 1 BIMETAL ASSEMBLY TOGETHER x Showing Repair Parts and Assemblies e A IF THERE IS NO ANTIHUM SPRING CONE THERE IS AN ADHESIVE PAPER DOT ON M12209 THE THROTTLING PLATE Fig 22 Single Element Thermostat Exploded View Showing Repair Parts and Assemblies 75 7184 1 18 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS Table 8 TP970 TP974 and TP9600 TP9630 Thermostat Repair Parts and Assemblies Bushing TP973 14004447 001 Setpoint Cam Assembly TP970A1004 A1012 A1020 A1038 A1046 A1053 A1095 A2004 A2012 A2020 A2038 A2053 A2095 TP970C TP972A1143 A2143 TP973A1001 A1019 A1127 14004447 002 Setpoint Cam Assembly TP970B1002 B1010 B1028 B1036 B2002 B2010 B2028 B2036 TP970D TP972A1002 A
23. eplate as previously described if applicable Unscrew center holding screw TP978 or thermometer mounting post using Thermostat Tool CCT735A MQT7354 Remove the Phillips head screw and the defective assembly Fig 18 Replace with new assembly being sure the rubber O ring if used is properly aligned around the nozzle opening in the recess on the bottom of the aluminum block Insert spring cone if used into new assembly from the bottom Reassemble the thermostat Check that the antihum spring or cone if used is properly positioned so that the spring just touches the throttling plate and the base of the spring larger end is seated properly in the recess of the spring mounting hole Fig 17 Calibrate the thermostat 75 7184 1 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS NOZZLE THROTTLING PLATE AND BIMETAL ASSEMBLY SCREW TYPICAL oi SETPOINT CAM ASSEMBLY TYPICAL N PNEUMATIC ASSEMBLY BOTTOM VIEW OF d BIMETAL ASSEMBLY THROTTLING P 7 PLATE AND L2 ANTIHUM BIMETAL a SPRING IF THERE IS NO ANTIHUM SPRING CONE THERE IS AN ASSEMBLY OR CONE ADHESIVE PAPER DOT ON THE THROTTLING PLATE M12208 Fig 18 Nozzle Throttling Plate Bimetal Assembly Replacement Restrictor Block and Filter Replacement QI Se N CAUTION en S When replacing these parts use extreme caution to prevent dirt dust or chips from entering various chambers and openings of the thermostat 1 Remove the
24. g 5 75 7184 1 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS Table 4 TP973A and B Thermostat LLL Table4 TP973A and B Thermostat Specifications O O Z Supply Air Degrees Old New Pressure Throttling Model No Model No psi kPa Range Special Features TP973A 1068 60 90 18 124 Adjustable Universal Modernization Kit with Universal 2 109F Window Cover TP973A 1076 dl 1 1 5 6 C TP973A 1092 60 90 F Honeywell Thermostat Modernization Kit with Universal Window Cover TP973A 1100 Includes 14004406 901 Cover TP973A 1117 Includes 25 ft 7 6m Twin Tubing and TP973A 1126 Blank Plastic Cover TP973A 1134 TP973A 1142 TP973A 1159 TP973A 1167 Includes 14004407 121 Cover TP973A 1175 Includes 14004407 300 Cover TP973A 1183 TP973B 1066 TP973B 1074 TP973B 1090 TP973B 1108 TP973B 1116 TP973B 1124 TP973B 1132 TP973B 1140 TP973B 1157 TP973B 2157 All one or two pipe bleed type 60 90 F Includes 1400406 901 Cover 60 90 F Includes 14004407 121 Cover Includes 14004407 300 Cover Includes 25 ft 7 6m Twin Tubing and 14004407 121 Cover 75 7134 1 6 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS Table 5 TP974A TP978A E TP979A E Thermostat Specifications Old New Model No Model No TP974A 1000 TP974A 2000 TP978A 1006 No Replacement TP978B 1004 No Replacement DA Cooling TP978C 1002 No DA Heating DA 1 or 2 Pipe Sensor Bleed Type DA Heating DA Cooling RA
25. heated by excessive handling during calibration 3 Calibration of the TP974 is not recommended 4 To check calibration or to recalibrate the Limited Control Range LCR thermostats the space temperature must be 78F 26C or above for cooling applications and 72 or 68F 22 or 20C or below for heating applications depending on the model TP972A1119 and TP972A1127 are 68F 20C The setpoint limitation is nonadjustable 5 To check calibration or to recalibrate the TP978 ZEB thermostats measure actual room temperature with a test thermometer The 75F 24C limit is nonadjustable Calibration Check 1 Turn the setpoint indicator adjustment down DA or up RA until the setpoint indicator reads 5 degrees F 2 8 degrees C below DA or above RA room temperature The BLP at the thermostat should build up within 30 seconds 2 Turn the setpoint indicator adjustment up DA or down RA slowly The thermostat should begin to bleed off audibly between 1 and 3 degrees F 0 56 and 1 7 degrees C below DA or above RA room temperature Thermometers 1 Measure the ambient temperature with an accurate thermometer Compare the thermometer reading with the thermostat thermometer reading 2 If the difference is more than 1 degree F 0 56 degree C use the Thermometer Calibration Tool MQT970 to twist the thermostat thermometer calibration bobbin Fig 15 until the thermostat thermometer reading is correct Calibration Set Up For A
26. heating Replacement RA Cooling TP978D 1000 No RA Heating Replacement RA Cooling RA Right Side DA Left Side TP978E 1007 TP978E 2007 TP979A 1005 TP979A 2005 TP979B 1003 TP979B 2003 RA Heating RA Cooling DA Heating DA Cooling DA Heating or Cooling RA Heating or Cooling DA Heating DA Cooling TP979C 1001 TP979C 2001 TP979D 1009 TP979D 2009 TP979E 1006 TP979E 2006 DA Heating RA Cooling 50 100 F 10 38 C Range 60 73 F Heating 77 90 F Cooling Supply Air Pressure psi kPa 18 124 3 15 21 103 Output 18 124 Degrees Throttling Range Special Features Sensor for use with RP908 amp RP920 Controller ZEB Energy Conservation Setpoint Stop 73 F Heating 77 F Cooling Includes Cover Special System Powered Thermostat for Carrier 0 18 1 18 124 Adjustable 2 10 F 1 1 5 6 C 13 90 Day 18 124 Nite Day Nite Heat with night set down Cool with night set up 75 7184 1 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS Table 6 TP9600 Thermostat Specifications Single Temperature Two Pipe TP970A 2004 TP970B 2002 TP970A 2004 TP970B 2002 Day Night Two Pipe TP9610A 1006 TP9610B 1005 TP9613A 1000 TP9613B 1009 TP971A 2003 TP971B 2001 TP971A 2003 TP971B 2001 Heating Cooling Two Pipe TP9620A 1005 TP9623B 1009 TP972A 2002 TP972B 2002 Single Temperature One or Two Pipe TP9630A 1004 TP9630B 1003 TP9633A
27. ine pressure DA Turn the switchover adjustment screw an additional 1 8 to 1 4 turn clockwise Switchover is calibrated e TP972A and TP9620A Cooling RA Heating DA 1 Ensure that main line pressure is set to low 13 psi pressure requirement 2 Turn the setpoint indicator adjustment until the setpoint indicator reads 5 degrees F 2 8 degrees C below actual temperature 3 BLD gage should read 0 psi 0 kPa If it does not turn the switchover adjustment screw Fig 16 clockwise until it does 4 Turn the switchover adjustment screw counterclockwise until the pressure begins to increase This indicates switchover Allow the gage to go to full main line pressure 5 Turn the switchover adjustment screw counterclockwise until pressure decreases to 0 psi switchover point Turn the switchover adjustment screw an additional 1 8 to 1 4 turn clockwise Switchover is calibrated BACK PLATE SCREWS 4 THERMOSTAT MULTISTAGE FILTER SWITCHOVER ADJUSTMENT SCREW DAYIUTO 7 LEVER Fig 16 Back View of Thermostat Showing Switchover Adjustment Screw and DAY AUTO Lever M12211 75 7184 1 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS TROUBLESHOOTING See Table 7 for troubleshooting procedures Table 7 TP970 Series Thermostat Troubleshooting Procedures Excessive noise If there is an antihum spring it is not Reposition spring to touch throttling plate touching the throttling plate Stick an adhesiv
28. ll Thermostats 1 Start with the main air pressure at the recommended setting 2 Remove the thermostat cover 3 All thermostats except the TP978E Install Gage 305965 0 to 30 psi 0 to 207 kPa with Gage Adapter 3151614 Fig 14 into the branchline pressure gage tap except TP978E TP978E Install a 0 to 30 psi 0 to 207 kPa gage in the branchline remote from the TP978E 4 Turn the setpoint indicator adjustment until the setpoint indicator reads the existing temperature TP970A B and TP9600A B 1 Set throttling range to value specified on the job drawing 2 Turn the calibration screw Fig 15 until the gage reads 0 psi 0 kPa 75 7134 1 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS 12 3 Turn the calibration screw in the opposite direction until the gage reads 8 1 psi 55 7 kPa 4 The TP970 and TP9600 are now calibrated The setpoint indicator and thermometer should be within 1 degree F 0 56 degree C of each other 5 Remove the gage and gage adaptor and replace the cover 6 Turn the setpoint indicator adjustment until the setpoint indicator is at the desired setting THROTTLING RANGE SCALE 2 GAGE TAP DAY SUMMER ANTIHUM THROTTLING 7 N SPRING 2 PLATE 2 y L THERMOMETER A F HR CALIBRATION V S ENEG Seen NITE WINTER SCALEPLATE e EYER TEMPERATURE POLS OE 60 INDICATOR CALIBRATION SETPOINT SCREW INDICATOR DAY SUMMER NITE WINTER SETPOINT DIA
29. n the cooling range at the TP978E causes the TP978E to increase the BLP of the cooling element This action proportionally closes the normally open cooling valve Fig 11 to maintain the temperature set on the high range portion of the TP978E The normally open heating valve is held closed by the high BLP on the DA side of the TP978E A continued fall in temperature into the heating range at the TP978E lowers the BLP of the heating element This action proportionally opens the normally open heating valve to maintain the temperature set on the low range portion of the TP978E TP978E RESTRICTORS 0 005 COOLING VALVE TP978A Typical Operation HEATING VALVE Fig 11 C3545 TP979A E The TP979 thermostats provide independent control of heating and cooling with dual thermostats and separate setpoints and branch lines This enables ZEB operation without selected actuator springs or ratio relays Fig 12 TP979C DA RA HEATING VALVE COOLING VALVE PNEUMATIC PNEUMATIC OPERATOR WITH OPERATOR WITH 4 TO 11 PSI CA 4 TO 11 PSI 28 to 76 kPa m 28 to 76 kPa N O SPRING RANGE SPRING RANGE VALVE OPEN ZERO ENERGY BAND VALVE CLOSED 18C 20C 22C 24C 26C HEATING COOLING SETPOINT SETPOINT 0 Fig 12 TP979 Typical Operation The TP979D and E models provide automatic night setback of setpoint for heating and setup for cooling Figure 13 shows potential energy savings with night setback opera
30. ntable See HP970 72 and Table 14 TP9600 Series Thermostat Covers Installation Instructions 95 5597 for painting information Model Setpoint Thermometer lt gt TP9633A Fig 26 TP9600 Series Thermostat DS Honeywell Home and Building Control Home and Building Control Honeywell Inc Honeywell Limited Honeywell Limit e Honeywell Plaza 155 Gordon Baker Road P O Box 524 North York Ontario Minneapolis MN 55408 0524 M2H 3N7 paper containing at least 1096 amp Printed in U S A on recycled 75 7134 1 R F Rev 12 97 post consumer paper fibers www honeywell com
31. ot calibrate thermostat Oil or moisture in lines Replace the restrictor block assembly and filter Also ensure that the air supply to the thermostat is dry and clean If these solutions fail replace the thermostat 75 7184 1 14 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS REPAIR Thermometer Replacement NOTE The following procedure requires a 1 4 in 6 mm 1 nut driver and a small screwdriver Insert the blade of a small screwdriver under the bimetal Fig 17 and pry up Older style thermostats have a locking ring Insert the blade between the ring and white nylon bushing and pry the ring from the thermometer bimetal mounting post Remove the bimetal and bushing by lifting the top of the plate to which the scaleplate is attached near the hex of the bimetal mounting post N CAUTION The new bimetal can be easily distorted if extreme care is not used when handling it 3 Press the new bimetal and bushing into the thermometer post using a 1 4 in 6 mm nut driver over the bobbin Allow the bimetal to cool down to the ambient temperature after handling Slowly rotate the bushing until the thermometer pointer is aligned with the existing ambient temperature on the scaleplate ANTIHUM SPRING CONE BIMETAL 60 SETPOINT INDICATOR EA E EEEI VET SCALEPLATE MOUNTING POSTS AL SCALEPLATE E LOCKING TABS BELL SETPOINT INDICATOR ADJUSTMENT Ar THERE IS NO ANTIHUM SPRING CONE THERE IS AN
32. re 24 and Table 9 for TP978E Thermostat repair parts and assemblies The TP978A D Thermostats have not been replaced M12207 Fig 24 TP978E Exploded View 75 7184 1 20 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS Table 9 TP978E Thermostat Repair Parts and Assemblies Moe FATE ETE TET sorta runt RE LL CLAU o Sere Wo x76 pan heed pep esse SSCS PT LXI eezseros Nozzle Trotina Plat Bimel Assembly OA Ie TF J 2098 004 Nozze Tiroting Piate Bimetal Assembly RA let FTF 4002098005 nozzle Tivotins Plate Bimetar Assembly 0A rohy LLLI 05885005 Base and Cam Assemby LLLI a002098 007 Mounting Piate Assembly 02587 0085 fiersa Rasos XT LLL oesseroe Right side pA rroo Po 2587 007 right side RA 7736 TP979A E Table 10 TP979A E Thermostat Repair Parts and Assemblies Ne rano naan No Description 3 TP979C Requires one TP970A2004 and one TP970B2002 See Figure 25 and Table 10 for TP979A E Thermostat repair parts and assemblies TP979D Requires one TP9712003 and one TP971D2007 TP979E Requires one TP971B2001 and one TP971E2004 Accessories See TP970 TP974 and HP970 Series Fittings Installation Instructions 95 7134 for illustrations or further information on the following pneumatic fittings M12221 Fig 25 TP979 Exploded View 21 75 7184 1 TP970
33. rottling Range Adjustable 2 10 F 1 1 5 6 C Special Features Universal Modernization Kit with Universal Window Cover Honeywell Thermostat Modernization Kit with Universal Window Cover Limited Control Range LCR Universal Modernization Kit with Universal Window Cover Universal Modernization Kit with Universal Window Cover Includes 25 ft 7 6m Twin Tubing and 14004407 300 ce Includes 25 ft 7 6m Twin Tubing and 14004407 121 Cover Includes 25 ft 7 6m Sheathed Tubing and 14004406 300 Cover Includes 25 ft 7 6m Sheathed Tubing and 14004406 121 Cover Convertastat Kit with Universal Window Cover Replacement for 2 pipe only Johnson T4002 amp T4100 Powers TH192 Robertshaw TP2211 amp TP2212 Quick Mount with 14004407 300 Cover Quick Mount with 14004407 121 Cover Quick Mount with 14004407 111 Cover Quick Mount with 14004406 300 Cover Quick Mount with 14004406 121 Cover Quick Mount with 14004406 111 Cover Universal Modernization Kit with Universal Window Cover Honeywell Thermostat Modernization Kit with Universal Window Cover Limited Control Range LCR continued TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS Table 1 TP970A D Thermostat LLL Table 1 TP970A D Thermostat Specifications continued continued Supply Air Degrees Old New Pressure Throttling Model No Model No Description psi kPa Range Special Features TP970B 1069 TP970B 2069 RA 2
34. tion VALVE OPEN NIGHT SETBACK ENERGY SAVINGS VALVE CLOSED 60F 62F 64F 66F 68F 70F 16C 18C 20C 22C 6 DEGREES F M 3 3 DEGREES C NIGHT NIGHT SETBACK DAY HEATING COOLING 3547 SETPOINT SETPOINT Fig 13 Night Setback Operation TP979 Covers Both metal and plastic covers are available offering a wide selection of windows See Tables 11 and 12 in the ACCESSORIES section for more information TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS MAINTENANCE General See Figure 14 for tools necessary to calibrate TP970 and TP9600 Series thermostats THERMOSTAT TOOL TEST THERMOMETER 15 20 25 10 30 GAGE DIGITAL RELATIVE HUMIDITY INDICATOR PEN C3929 Fig 14 TP970 and TP9600 Series Thermostat Calibration Tools Cleaning Remove the thermostat cover and clean or dust the thermostat using a soft brush or air hose In extremely dirty or dusty environments clean the thermostats more frequently DO NOT use a high pressure air hose to remove dust Use only a soft brush to clean the throttling plate nozzle assembly No lubrication is necessary 75 7184 1 Calibration NOTES 1 The antihum spring Fig 15 must be free Be sure the spring just touches the throttling plate and is not wedged against it does not apply to all TP970C and D or any TP970 series starting with 2000 i e TP972A2143 and TP9600 series 2 The thermostats are very sensitive and should not be
35. tpoint indicator is at the desired setting TP979D and E 1 With 13 psi 90 kPa main line pressure turn the DAY SUMMER left calibration screw Fig 15 until the gage reads 0 psi 0 kPa Turn the calibration screw in the opposite direction until the gage reads 8 1 psi 55 7 kPa With 18 psi 124 kPa main air pressure rotate the night setpoint dial until the setting agrees with the indicated temperature Repeat Steps 1 and 2 using the NITE WINTER right calibration screw Fig 15 The thermostat is now calibrated Remove the gage and replace cover 13 TP970 AND TP9600 SERIES PNEUMATIC THERMOSTATS Switchover Calibration Switchover allows for normal supply line fluctuations TP971A E and TP9610A B 1 Ensure that main line pressure is set to low 13 psi pressure requirement 2 Turn the setpoint indicator adjustment until the setpoint indicator reads 5 degrees F 2 8 degrees C below actual temperature 3 BLP gage should read 0 psi 0 kPa RA or 13 psi 90 kPa DA If it does not turn switchover adjustment screw Fig 16 clockwise until it does 4 Turn the switchover adjustment screw counterclockwise until the pressure begins to increase RA or decrease DA This indicates switchover Allow the gage to go to full line pressure RA or 0 psi 0 kPa DA Turn the switchover adjustment screw counterclockwise until pressure decreases to 0 psi 0 kPa RA or increases to full main l
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