Honeywell T8401C manual

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Table of contents for the manual

  • Page 1

    ® U.S. Regi stered T rademar k Copyright © 2002 Honeywell • • All Righ ts Reserved INSTALLATION INSTRUCTIONS 69- 1480- 1 T8400C and T8401C Electronic Thermostats The T8400 C and T8401C Th ermost ats p rovide single- stage, non-progr ammable temp erature contr ol for 24V heating-cooling systems with manua l changeover fr om heat to cool. Heati[...]

  • Page 2

    T8400C AND T8401C ELECTRONIC THERMOSTAT S 69-1480-1 2 Fig. 1. T ypical locati on of thermost at . Mounting Decorator Cover Pl ate and W allplate to W all IMPORTANT Level only fo r appearance. T he thermostat func- tions norm ally eve n when not lev el. NOTE: Only SUPER TRADELIN E® models have the cover plate. Mount decor ator cover pl ate (SUPER T[...]

  • Page 3

    T8400C AND T8401C E LECTRONIC THERMOSTATS 3 69-1480-1 Fig. 3. Rest rict wiring to shaded area. Fig. 4. Wir ing connecti ons. Fig. 5. T8400C/ T8401C heat-c ool wiring dia gram in single tr ansformer s ystem with gas heat/ electric cooling. Fig. 6. T8400 C/T8401C heat-c ool wiring diagram in oil h eating/electric cooling sy stem. Oil primary ha s its[...]

  • Page 4

    T8400C AND T8401C ELECTRONIC THERMOSTAT S 69-1480-1 4 Slide the FAN switch in the bottom left corner of the thermostat to select the desired fan s etting. SYSTEM Switch System swi tch setti ngs contr ol thermos tat op eratio n as follows: Cool: The thermo stat controls the coo ling system. Off: Both heati ng and cool ing are of f. Heat: The the rmo[...]

  • Page 5

    T8400C AND T8401C E LECTRONIC THERMOSTATS 5 69-1480-1 3. Press the s key . Factory information is displa yed. A typical example is s hown, but informati on dis- played varies by model. This info rmation is for fac- tory use o nly . 4. Press the s key again to display °C or °F . 5. Press the t key to change th e °C or °F indic ation. 6. Press th[...]

  • Page 6

    69-1480-1 G .H . Rev . 2-02 www .honeyw ell.com/yourho me Automation and Control Solu tions Honeywell Honeywell Limit ed-Honeywell Limi tée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55 422 Scarborough, Ontar io M1V 4Z9[...]