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TSTATCCSEN01 Outdoor Temperature Sensor Installation Instructions NOTE: Read the entire instruction manual before starting the installation. This symbol → indicates a change since the last issue. SAFETY CONSIDERATIONS Read and follow manufacturer instructions carefully. Follow all local electrical codes during installation. All wiring must conform to local and national electrical codes. Improper wiring or installation may damage thermostat sensor. Recognize safety information. This is the safety-alert symbol . When you see this symbol on the equipment and in the instruction manual, be alert to the potential for personal injury. Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. INTRODUCTION The remote temperature sensor is an accessory for all Carrier thermostats, except the non-programmable AC versions. It allows the temperature at a remote location to be displayed on the thermostat.
PERFORMING THE INSTALLATION Once the mounting location has been selected, route the interconnecting wiring through the building between thermostat and outdoor sensor. The exit point from inside to outside will be the location of the outdoor sensor. The location of the wire nuts will be either inside or outside of wall depending on whether or not a box is used. Allow sufficient wire length for some excess on each end. IF AN OUTLET BOX IS USED: (See Fig. 1.) Drill a suitable hole in the building wall at selected sensor location. Route interconnecting wire through building wall. Remove rear knockout from electric box, route wire through box, and attach box to wall with supplied wood screws. Cut and strip wires to a reasonable length and connect with supplied wire nuts. Polarity is unimportant. Seal wires where they exit building with a suitable exterior caulk. Fasten cover to box with supplied sheet metal screws.
FIELD-SUPPLIED OUTLET BOX SENSOR EXTERIOR WALL
MOUNTING CONSIDERATIONS → This sensor CANNOT be field adjusted. Choose a location for the outdoor sensor after considering the following: 1) A wiring route must be planned between thermostat and location of outdoor sensor, prior to installation. 2) A sensor located in direct sunlight will not read properly while the sun is shining on it. 3) A high location under an eave is ideal because it is protected from sun, weather, and people. 4) The sensor can be mounted directly to a wall using provided screws and standoffs or can be used as a cover for a standard electric outlet box (not supplied). WIRING SELECTION: A pair of conductors must be selected to run between mounted sensor and thermostat. Conductors must be rated NEC Class 1. Thermostat and common bell wire have this rating.
METAL SCREWS
MOUNTING TO OUTLET BOX: A standard electrical box (not included) may be used with the sensor plate as its cover. This provides room inside box for wire nut connection between sensor wires and wiring run to the thermostat.
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Fig. 1—Mounting to Outlet Box
USING SENSOR PLATE: Attaching the plate directly to the outside wall simplifies mounting and requires less space, but the wire nut transitions to the thermostat wiring now need to be made within the wall. This may be difficult in some installations. Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 PC 101 Catalog No. 92-33TS-TA41C Printed in U.S.A. Form TSTAT-12SI Pg 1 9-96 Replaces: TSTAT-3SI Tab misc. misc.
IF PLATE IS ATTACHED DIRECTLY TO WALL: (See Fig. 2.) Drill a suitable hole through the wall at selected sensor location. Route sensor wires through wall, making sure they are accessible from the inside. Use provided spacers to stand off plate from wall. Mount the sensor plate loosely to wall with only 1 screw so that access to hole is preserved for application of caulking. Fill hole with a suitable exterior caulking compound. Then insert second screw and tighten both screws carefully. From inside, locate sensor wires and wires from thermostat. Cut and trim thermostat wires to an appropriate length and connect with supplied wire nuts. It may be advisable to retain thermostat wire with a clamp or wire staple ahead of wire nuts to prevent a pull on this wire from damaging the more delicate sensor connections.
SENSOR SPACERS
EXTERIOR WALL
WOOD SCREWS
Fig. 2—Mounting Directly to Wall
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THERMOSTAT CONNECTION: Turn OFF all power to system. The thermostat display will go blank. Open thermostat at rear hinge to access connector blocks. Route and connect wires at thermostat carefully to minimize amount of wire between wall and thermostat. Strip ends only 1/4 in. to prevent a possible short between wires at the thermostat. Attach wires to S1 and S2 terminals. Polarity is unimportant. Route wires behind thermostat so that hinge can close properly. When wiring is completed and thermostat closed, restore power to system. Refer to Homeowners manual for procedure to display remote temperature.
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TROUBLESHOOTING Table 1 shows a temperature ˚F/Ohm Ω relationship to aid in troubleshooting the outdoor sensor.
Copyright 1996 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231
To verify the sensor is good, disconnect both leads from the thermostat and use a digital multimeter to measure the resistance through the sensor. Find ohm reading in table and compare temperature reading from table to ambient temperature surrounding the sensor. (Accuracy should be +/- 5 to 10%.) Example: If 10.25k ohms are measured, this equals approximately 76˚F.
→Temperature/Ohm Relationship TEMP ˚F 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 102 104 106 108 110 112 114 116 118 120
OHMS Ω 34480 32630 30760 29220 27470 26020 24680 23320 22070 20910 19830 18820 17870 16920 16160 15260 14530 13790 13090 12480 11860 11270 10750 10250 9750 9300 8840 8432 8042 7668 7310 6993 6661 6368 6085 5811 5571 5313 5088 4869 4660 4450 4268 4091 3918 3750
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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 PC 101 Catalog No. 92-33TS-TA41C Printed in U.S.A. Form TSTAT-12SI Pg 2 9-96 Replaces: TSTAT-3SI Tab misc. misc.
