Honeywell B, Service Data

Page 1: ... cooling heating cycles and automatic switchover from mainline pressure The TP972A2143 is designed specifically for replacing Johnson cooling heating thermostats see SPECIFICATIONS section 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 pi...

Page 2: ...ndow Cover TP970A 1095 TP970A 2095 40 70 F Universal Modernization Kit with Universal Window Cover TP970A 1103 TP970A 2103 60 90 F Includes 25 ft 7 6m Twin Tubing and 14004407 300 Cover TP970A 1111 TP970A 2111 Includes 25 ft 7 6m Twin Tubing and 14004407 121 Cover TP970A 1129 TP970A 2129 Includes 25 ft 7 6m Sheathed Tubing and 14004406 300 Cover TP970A 1137 TP970A 2137 Includes 25 ft 7 6m Sheathed...

Page 3: ... Range Allows Zero Energy Band ZEB TP970D 1016 No Replacement Universal Zero Energy Band ZEB Modernization Kit All single temperature pilot bleed Old Model No New Model No Description Setpoint Supply Air Pressure psi kPa Degrees Throttling Range Special Features TP971A 1003 TP971A 2003 DA Heating 2 Pipe 60 90 F DAY Range 13 or 18 90 or 124 Adjustable 2 10 F TP971A 1011 TP971A 2011 15 30 C DAY Rang...

Page 4: ...6 111 Cover TP971B 1001 TP971B 2001 RA TP971B 1019 TP971B 2019 Heating 2 Pipe 16 or 21 110 or 145 TP971B 1027 TP971B 2027 15 30 C DAY Range 13 or 18 90 or 124 TP971B 1035 TP971B 2035 60 90 F DAY Range 16 or 21 110 or 145 Includes 14004406 901 Cover TP971B 1043 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 ...

Page 5: ... F Cooling 13 Cooling or 18 Heating Limited Control Range LCR TP972A 1101 No Replacement 60 72 F Heating 90 or 124 Universal Limited Control Range LCR Modernization Kit TP972A 1119 No Replacement 78 90 F Cooling 13 Cooling or 18 Heating Limited Control Range LCR TP972A 1127 No Replacement 55 65 F Heating 90 or 124 Universal Limited Control Range LCR Modernization Kit TP972A 1143 TP972A 2143 D A R ...

Page 6: ...1 Cover TP973A 1117 No Replacement Includes 25 ft 7 6m Twin Tubing and TP973A 1126 No Replacement Blank Plastic Cover TP973A 1134 No Replacement TP973A 1142 No Replacement TP973A 1159 TP973A 2159 TP973A 1167 TP973A 2167 Includes 14004407 121 Cover TP973A 1175 TP973A 2175 Includes 14004407 300 Cover TP973A 1183 TP973A 2183 TP973B 1066 TP973B 2066 RA TP973B 1074 TP973B 2074 15 30 C TP973B 1090 TP973...

Page 7: ... Stop 73 F Heating 77 F Cooling TP978B 1004 No Replacement RA heating DA Cooling 77 90 F Cooling TP978C 1002 No Replacement DA Heating RA Cooling TP978D 1000 No Replacement RA Heating RA Cooling TP978E 1007 TP978E 2007 RA Right Side DA Left Side 68 82 F 0 18 1 1 4 F Includes Cover Special System Powered Thermostat for Carrier TP979A 1005 TP979A 2005 DA Heating DA Cooling 60 90 F 18 124 Adjustable ...

Page 8: ...perature 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 SUPPLY TP970A B OR TP9600A ...

Page 9: ...o 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 o...

Page 10: ...ing 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 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...

Page 11: ... NIGHT HEATING SETPOINT DAY COOLING SETPOINT VALVE OPEN 64F 66F 68F 70F 60F 62F 18C 20C 22C 16C 6 DEGREES F 3 3 DEGREES C NIGHT SETBACK NIGHT SETBACK ENERGY SAVINGS C3547 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 MAINTENANCE General See Figure 14 f...

Page 12: ...he 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 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 indica...

Page 13: ...indicated temperature 4 Repeat Steps 1 and 2 using the NITE WINTER right calibration screw Fig 15 The thermostat is now calibrated 5 Remove the gage and replace cover 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 setpoin...

Page 14: ...lock assembly and filter Also ensure that the air supply to the thermostat is dry and clean Slow response Inadequate air flow caused by a partially clogged restrictor block assembly and or filter cartridge Replace restrictor block assembly and or filter Thermostat instability System gain is too high Move throttling range adjustment toward MAX position and then recalibrate Inaccurate readings Inacc...

Page 15: ...aleplate is attached at the hex of the bimetal mounting post 3 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 4 Remove and replace setpoint indicator adjustment Fig 17 using caution not to damage or distort the bimetal sensing element s On models with DAY...

Page 16: ...extreme caution to prevent dirt dust or chips from entering various chambers and openings of the thermostat 1 Remove the 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 restrictor filter gasket s 3 Replace the restrictor block and filter a Align the appropriate gasket over the corresp...

Page 17: ...ed seal 3 Lift the spring from the post 4 Install the replacement parts in reverse order 5 Replace and tighten screws M12137 14001992 001 16 21 PSI CHANGEOVER SPRING SCREW Fig 20 DAY AUTO Lever Assembly Replacement Switchover Adjustment Spring Replacement 1 Using a screwdriver carefully remove the screw and switchover adjustment spring Fig 21 See PARTS LIST in PARTS and ACCESSORIES section for ava...

Page 18: ...SEMBLY TOGETHER IF THERE IS NO ANTIHUM SPRING CONE THERE IS AN ADHESIVE PAPER DOT ON THE THROTTLING PLATE 1 1 2 10F 10E 10 BOTTOM VIEW OF 1 5 6 6 10A 1A 1B 1C 1D 7 8 9 10 10B 10 10C 10D 11 12 2 3 4 1 M12209 2 REPLACE THE SETPOINT CAM ASSEMBLY AND NOZZLE THROTTLING PLATE AND BIMETAL ASSEMBLY TOGETHER IF THERE IS NO ANTIHUM SPRING CONE THERE IS AN ADHESIVE PAPER DOT ON THE THROTTLING PLATE 1 1 1 2 F...

Page 19: ...embly TP971B E TP972A1036 A1077 A1085 A1150 A1184 A2036 A2150 14004447 005 Setpoint Cam Assembly TP970B1044 TP972A1051 A1101 14004447 006 Setpoint Cam Assembly TP970A1061 A1087 A2087 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 ...

Page 20: ...P972A TP973A B 14002374 005 Restrictor Block Assembly 0 005 restrictor 3 pipe TP971C 14002374 006 Restrictor Block Assembly 0 007 restrictor 2 pipe TP974A 10E 14002373 001 Switchover Spring Assembly silver 16 to 21 psi 110 to 145 kPa 14002373 002 Switchover Spring Assembly gold 13 to 18 psi 90 to 124 kPa 14003923 001 Switchover Spring Assembly blue 20 to 25 psi 140 to 175 kPa 10F 14002372 001 DAY ...

Page 21: ...0 X X 14002387 007 Right side R A 77 90 60 70 80 90 HEAT M B1 COOL M B2 60 70 80 90 3 2 1 M12221 TP979A E See Figure 25 and Table 10 for TP979A E Thermostat repair parts and assemblies Key No Part No Description 1 14004057 001 Mounting Plate Assembly 2 14004058 001 Manifold Assembly 3 TP979A Requires two TP970A2004 TP979B Requires two TP970B2002 TP979C Requires one TP970A2004 and one TP970B2002 TP...

Page 22: ... 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 Wall Box Deep 14001494 001 One Pipe 8 ft 2 5m copper tubing assembly 14001494 002 T...

Page 23: ... Unit Vert Horiz Vert Horiz Vert Horiz Vert Horiz None 300 400 800 Setpoint Thermometer 15 30 C 15 30 C 110 210 310 60 90 F 60 90 F 111 211 311 511 611 711 40 70 F 40 70 F 112 Heat range Cool range 60 90 F 60 90 F 114 15 30 C 120 320 60 90 F 121 321 40 70 F 122 COOLER WARMER 123 15 30 C 330 60 90 F When ordering use complete part number including three digit suffix 14004406 008 Cover also suitable...

Page 24: ... Concealed Concealed TP9630A Visible and adjustable Visible TP9630B Visible and adjustable Visible TP9633A Concealed Concealed TP9633B Concealed Concealed Table 13 TP970 Series Thermostat Covers Beige Plastic 14004407 XXX Covers are paintable See HP970 72 and TP970 74 Pneumatic Sensors Humidistats and Thermostats Installation Instructions 95 5597 for painting information Part Number 14004407 XXX H...