Carrier 33CS Installation, Start-up, And Operating Instructions Manual

[Page 1] Carrier 33CS

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 111 Catalog No. 533-317 Printed in U.S.A. Form 33CS-12SI Pg 1 1204 12-97 Replaces: New Book 1 4 Tab ...

[Page 2] Carrier 33CS

2 1. Turn off all power to unit. 2. If an existing thermostat is being replaced: a. Remove existing thermostat from the wall. b. Disconnect wires from existing thermostat. Do not allow wires to fall back into the wall. As each wire is disconnected, r...

[Page 3] Carrier 33CS

3 Table 1 — Thermostat Wiring Terminations *Terminal C may not be used in all applications. †Used on Heat Pump applications only. Set Clock — The Set Clock button allows the user to change the time and day displayed on the thermostat. Press the...

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4 HEAT PUMP CONFIGURATION (Steps 3 and 4) — To set the thermostat for heat pump operation, Advanced Setup Step 3 must be configured to ON. Use the UP and DOWN AR- ROW buttons to configure the step. The default is OFF. Press the mode button to conti...

[Page 5] Carrier 33CS

5 Program Thermostat Schedules — Before program- ming the thermostat, plan the thermostat daily schedule. The schedule is divided into 7 days (Monday through Sunday). Each day has from 2 to 4 time periods (Occupied 1, Occu- pied 2, Occupied 3, Unoc...

[Page 6] Carrier 33CS

6 If only one occupied schedule is selected, the Occupied 2 and 3 schedules are skipped. If the start time is set later in the day than the stop time, the program will run from midnight of that day to the stop time and then from the start time to mid...

[Page 7] Carrier 33CS

7 Electric Heat — When the Electric Heat option in the ad- vanced set up is set to ON (configured by installer), the thermo- stat will turn on the fan immediately any time there is a heat demand. This feature should only be used on first stage elec...

[Page 8] Carrier 33CS

8 L L 2 3 L 1 L 1 L 3 L 2 A B C SITE POWER 24 VAC UNIT WITH TRANSFORMER ON L AND L 3 2 24 VAC UNIT WITH TRANSFORMER ON L AND L 2 1 110 VAC TIMECLOCK TRANSFORMER ISOLATION RELAY COIL THERMOSTAT THERMOSTAT THERMOSTAT CK1 CK2 CK1 CK1 CK2 CK2 NOTE: Addit...

[Page 9] Carrier 33CS

9 TROUBLESHOOTING Table 4 — Thermostat Troubleshooting PROBLEM SOLUTION Display on thermostat not illuminated. Check for 24 vac at the R terminal connection. Terminal R must be connected for proper thermostat operation. ‘‘Service Filter’’ i...

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[Page 12] Carrier 33CS

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. PC 111 Catalog No. 533-317 Printed in U.S.A. Form 33CS-12SI Pg 12 1204 12-97 Replaces: New Book 1 4 Tab...