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TRADELINE |
T834C |
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Heating-CoolingThermostat |
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Application |
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T834C Thermostats control 24 to 30 Vac single-stage heating-cooling systems. See Table 1 for specific models and applications.AnspdtmercuryswitchmakesRtoWonatemperaturefallforheating,andRtoYonatemperatureriseforcooling. See Fig. 1.
TABLE 1—THERMOSTAT MODELS AND APPLICATIONS.
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Heat |
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Model |
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Switching |
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Anticipator |
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See |
Number |
Application |
System |
Fan |
Range |
Comments |
Fig. |
T834C1137 For use in standard |
HEAT-OFF- ON-AUTO |
0.18 to 1.0A |
TRADELINE; Beige. |
3 |
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heating-cooling |
COOL |
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systems. |
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T834C1541 For use in gasor |
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SUPER TRADELINE; |
4 |
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oil-fired, or central |
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Beige. |
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electric heata systems. |
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T834C2267 For use in gasor |
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SUPER TRADELINE; |
5 |
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oil-fired, single-stage |
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Premier White. |
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heat pump or central |
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(Jumper included.) |
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electric heata systems. |
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T834C2309 For use in standard |
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0.3 to 1.2A |
TRADELINE; Beige. |
3 |
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heating-cooling |
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systems. |
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aIn electric heat applications without fan sequencers, jumper terminals 1 and 2 to control the fan from the thermostat during heating.
Fig. 1—Internal view of T834C.
Contact your local waste management authority for instructions regarding recycling and the proper disposal of this control, or of an old control containing mercury in a sealed tube.
If you have questions, call Honeywell Inc. at 1-800-468- 1502.
Installation
WHEN INSTALLING THIS PRODUCT...
1.Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition.
2.Check the ratings given in the Instructions and on the product to make sure the productis suitable foryour applica-
tion.
3.Installer must be a trained, experienced service technician.
4.After installation is complete, check out product operation as provided in these Instructions.
Recycling Notice
This control contains mercury in a sealed tube. Do not place control in the trash at the end of its useful life.
If this control is replacing a control that contains mercury in a sealed tube, do not place your old control in the trash.
CAUTION
Disconnect power supply before beginning installation to prevent electrical shock or equipment damage.
J. H. • Rev. 2-93 •
• ©Honeywell Inc. 1993 • Form Number 69-0434—5
LOCATION
Locate the thermostat about 5 ft. [1.5 m] above the floor on an inside wall in an area with good air circulation at average temperature.
Do not mount the thermostat where it can be affected by:
—drafts or dead spots behind doors or in corners.
—hot or cold air from ducts.
—radiant heat from the sun, fireplaces, or appliances.
—unheated(uncooled)areasbehindthethermostat,such as outside walls.
This thermostat is a precision instrument and was carefully adjusted at the factory. Handle it carefully.
MOUNTING AND WIRING
Disconnectpowersupplybeforebeginninginstallationto prevent electrical shock or equipment damage.
All wiring must comply with local codes and ordinances. The T834C can be mounted directly to a wall or vertical outlet box. Use Honeywell part no. 193121A (beige) or 202689A (gray) Mounting Plate Assembly (order separately) to mount on horizontal outlet box or cover marks left byoldthermostat.Ifmountingplateassemblyisused,review instructionsprovidedwithassemblybeforewiringandmount-
ing thermostat. To wire and mount thermostat:
1.In replacement applications, check the existing thermostat wires for cracked or frayed insulation. Replace any wires in poor condition. If the wire is plastered into the wall, makeaholenexttothewiresandloosenthewiressothatthey can be pushed back into the wall later.
2.In new installations, run wiring (if necessary) to the thermostat location.
3.Set the adjustable heat anticipator indicator to match the current draw of the primary heating control or as recommended by the equipment manufacturer (see Heat Anticipator Setting).
4.Connect the wires to the terminals on the back of the thermostat. See Figs. 3-5 for internal schematic and typical hookup diagrams. If using electric heat-compatible thermostat in central electric heat applications, jumper terminals 1 and 2 to control fan operation from the thermostat during heating. See Fig. 2.
Fig. 2—Jumpering thermostat terminals to control fan operation.
5.Remove thermostat cover by pulling outward on bottom edge until it snaps free of the thermostat base. Carefully remove and discard the foam plastic shipping insert. This insert protects the switch and bimetal assembly during shipping.
6.Push excess wire back through the hole and plug any opening with insulation to prevent drafts that may affect thermostat performance.
7.Fasten the thermostat to the wall or outlet box with a screw through the top mounting hole. Adjust the thermostat so that it is approximately level and fasten the second screw through the bottom mounting hole. Do not tighten.
8.Exactly level the thermostat using a spirit level or plumb line. Tighten the mounting screws.
Fig. 3—Internal schematic and typical hookup for T834C1137 and T834C2308 in a standard heating-cooling system.
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R |
L1 |
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FAN SWITCH |
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(HOT) |
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FAN RELAY |
L2 |
H1 |
ON |
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G |
1 |
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C1 |
AUTO |
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TEMP. FALL |
C1 |
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COMPRESSOR |
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ANTICIPATOR |
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CONTACTOR |
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Y |
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SYSTEM |
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SWITCH |
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H1 |
COOL |
HEAT |
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ANTICIPATOR |
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OFF |
OFF |
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HEAT |
COOL |
HEAT RELAY |
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W |
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1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. |
M1119A |
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