HOLD − Using Temperature Hold Modes
When HOLD is displayed at the HOME screen, the ther- mostat is in a temperature hold condition. This means that the temperature program data is ignored and the thermo- stat functions much like a non−programmable thermostat.
Adjusting Temperature Setpoint in Hold Mode
The temperature setpoint represents the desired tempera- ture of the space around the thermostat. The default heat setpoint in hold mode is 70°F; the default cool setpoint in hold mode is 78°F.
To adjust the setpoint, press the UP or DOWN (YB) arrow buttons (see figure 8); the existing setpoint is displayed to the right of the actual room temperature. Each button press adjusts the setpoint up or down by 1 degree.
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80 | 70 | Fan | Hold | (DOOR |
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Figure 8
After the desired setpoint is reached, the HOME screen will reappear after about 15 seconds.
Permanent Hold Mode
At any time the program is running, from the HOME screen, set a permanent hold (program override) by press- ing the HOLD button (see figure 8). The thermostat now functions much like a non−programmable thermostat. Use the Up/Down arrow buttons to adjust the hold setpoint. To return to the program, press HOLD again.
Temporary
At any time the program is running, from the HOME screen, set a temporary
for 2 hours from the last button press, then returns to the program.
While in Temporary Hold, press HOLD once to switch to Permanent Hold (HOLD displays solid; PROG not dis- played); press HOLD again to return to the program (PROG displays; HOLD not displayed).
Temporary Hold Temperature Mode | ||||
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72 | 68 | Fan | Hold | (DOOR |
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Figure 9
PROG − Thermostat Programming
The 51M38 thermostat can be programmed to perform a set of both heating and cooling events for each day of the week. Each day can be programmed for 4 unique events per day, and each day can be different from any other day.
To Set Program Events and Temperatures
Figure 10 gives an example of how up to 7 different pro- grams can be set. Programs A and C reflect the desired warmth while the home IS occupied (72°); B allows less heating while the home is NOT occupied; D reflects a cool sleeping temperature.
NOTE − The example in figure 10 shows heat setpoints; a similar program may be set for cool setpoints.
Program Example
MONDAY PROGRAM: 72° |
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68° | A |
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64° |
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TUESDAY PROGRAM: 72° |
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68° | A | C |
64° | B | D |
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WEDNESDAY PROGRAM: 72° |
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68° | A | C |
64° | B | D |
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THURSDAY PROGRAM: 72° |
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68° | A |
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64° |
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FRIDAY PROGRAM: 72° |
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64° |
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SATURDAY PROGRAM: 72° |
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68° |
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64° |
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SUNDAY PROGRAM: 72° |
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68° |
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64° |
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Figure 10
NOTE − Pressing the ENTER button during the following programming steps, saves and exits to the HOME screen. To program events and temperatures, perform the follow- ing steps.
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505067M 7/13/05
