NOTE − This thermostat will NOT automatically switch from heating to cooling, or vice versa; operator involve- ment is required. At the change of seasons, or to accomo- date abnormal seasonal temperature swings, you must manually select to the opposite conditioning (Heat or Cool) program.
FAN − Controlling the Fan Operation
Use the FAN button to select either continuous fan mode or auto fan mode.
To change from continuous to auto fan mode (or vice ver- sa), press the FAN button. Note whether a fan icon in the FAN box is present (indicating that the fan is running) or not (fan not running).
If continuous fan mode is enabled (ON displayed in FAN box − see figure 13), the fan will run continuously regard- less of whether the heating or cooling equipment is run- ning.
Using Fan ON
Heat Cool
MO
PM I0:I0 | ON |
|
AM | FAN |
|
PROG B | Prog | Day/Time |
|
| |
| SYSTEM |
|
ROOM |
|
|
67° | Fan | Hold |
| HEAT |
|
| Settings | Enter |
Figure 13
If auto fan mode is selected (AUTO displayed in FAN box − see figure 14), the fan will only run when the heating or cooling equipment is running.
| Using Fan Auto |
| |
|
| Heat | Cool |
MO |
| Prog | Day/Time |
PM I0:36 FAN | |||
AM |
|
|
|
PROG B | AUTO |
|
|
ROOM | SYSTEM |
|
|
COOL |
|
| |
72° |
| Fan | Hold |
|
| ||
|
| Settings Enter | |
Figure 14
SETTINGS − Filter/Maintenance Reminders
The 51M34 thermostat is designed to remind you when the filter needs changing or when routine maintenance is re- quired, as (and if) defined, by you. These optional remind- ers are not enabled until you activate them. To do so, press the Settings button (shown below the Fan button in figure
14)once or twice for the desired reminder as shown in fig- ure 15 and as described in table 1.
Reminder Settings Display
|
|
|
| For MAINT, |
|
| MAINT |
| |
OFF |
|
| press Settings | |
|
|
| ||
| FILTER |
| button 2 times | |
|
|
| For FILTER, | |
|
|
| ||
|
|
| ||
|
|
|
| press Settings |
|
|
|
| button 1 time |
|
|
|
|
|
Figure 15
The default setting for the reminders is OFF (disabled). Press Up/Down arrow buttons to select the desired re- minder intervals.
Table 1
Filter and Maintenance Reminders
Buttons to |
| Available Settings and |
Use | Reminder | How to Use |
|
|
|
Settings | FILTER | Total fan run time expressed in |
(1st press) |
| months (Off, 1, 3, 6, 12); for |
| ||
then Arrows |
| example, if fan runs 12 hours a |
to scroll |
| day, 1 month reminder displays |
selections |
| in 2 calendar months. |
|
|
|
Settings | MAINT | Elapsed chronological time in |
(2nd press) |
| months (Off, 6, 12). Use this, |
| ||
then Arrows |
| for example, to remind yourself |
to scroll |
| when to perform routine checks |
selections |
| or when to call a technician for |
|
| perodic preventive |
|
| maintenance. |
|
|
|
Enter |
| Stores settings. |
|
|
|
NOTE − The HOME screen will reappear about 15 seconds after the final arrow button press. OR, press ENTER at any time to store any changes and exit to the HOME screen.
After either programmed interval has elapsed, the remind- er will be displayed as shown in figure 16.
Reminders |
|
| |
| MAINT | ||
|
| ||
MO TU WE TH FR SA SU |
| ||
FILTER | |||
|
| ||
| PM I0:i2 |
| FAN | ||||
|
|
|
|
|
| SERVICE | |
| AM |
|
|
| |||
|
|
|
| AUTO | |||
| PROG |
|
|
|
| ||
|
|
|
|
| |||
| ROOM | SYSTEM | |||||
78° |
| HEAT | |||||
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
| Figure 16 |
|
|
| |
After the filter has been changed, reset the filter reminder by pressing the SETTINGS button for 4 seconds. The screen will blink for a few moments to indicate that the tim- er has been reset.
Page 5
51M34 SERIES 5/2
