Mammoth 1F95-1277 Instructions Manual Download Page 7

7

OPERATING YOUR THERMOSTAT

Choose the Fan Setting (Auto or On)

Fan 

Auto

 is the most commonly selected setting and runs the 

fan only when the heating or cooling system is on .

Fan 

On

 selection runs the fan continuously for increased air 

circulation or to allow additional air cleaning .

Choose the System Setting

(Cool, Off, Heat, Emer, Auto)

Press the SYSTEM button to select:

Heat:

 Thermostat controls only the heating system .

Off:

 Heating and Cooling systems are off .

Cool:

 Thermostat controls only the cooling system .

Auto:

 Auto Changeover is used in areas where both heating 

and cooling may be required on the same day . 

AUTO

 allows 

the thermostat to automatically select heating or cooling 

depending on the indoor temperature and the selected heat 

and cool temperatures . When using 

AUTO

, be sure to set the 

Cooling temperatures more than 1° Fahrenheit higher than 

the heating temperature .

Emer:

 Setting is available only when the thermostat is config

-

ured in HP1 or HP2 mode .

Manual Operation for

Non-Programmable Mode

Press the SYSTEM button to select Heat or Cool and use

the   or   buttons to adjust the temperature to your

desired setting . After selecting your desired settings you can

also press the SYSTEM button to select 

AUTO

 to allow

the thermostat to automatically change between Heat and

Cool .

Manual Operation (Bypassing the Program)

Programmable Mode

Press   or   and the HOLD button and adjust the tempera-

ture wherever you like . This will override the program . The 

HOLD

 feature bypasses the program and allows you to adjust 

the temperature manually, as needed . Whatever temperature 

you set in 

HOLD

 will be maintained 24 hours a day, until you 

manually change the temperature or press 

Run Schedule

 to 

cancel 

HOLD

 and resume the programmed schedule .

Program Override (Temporary Override)

Press   or   buttons to adjust the temperature . This will 

override the temperature setting for a (default) four hour over-

ride period . The override period can be shortened by pressing 

 or lengthened by pressing   . Program Override period 

can range from 15 minutes to 7 days .

Example:

 If you turn up the heat during the morning program, 

it will be automatically lowered later, when the temporary hold 

period ends . To cancel the temporary setting at any time and 

return to the program, press 

Run Schedule

 .

If the SYSTEM button is pressed to select 

AUTO

 the

thermostat will change to Heat or Cool, whichever ran last . If

it switches to heat but you want cool, or it changes to cool but 

you want heat, press both   or   buttons simultaneously to 

change to the other mode .

IMPORTANT!

PROGRAMMING

 

Set Current Time and Day

1)  Press Menu key to enter installer menu . Then press

 

Set Time once to indicate hour & A or P designation in

 

clock display .

2)  Press and hold either the   or   touch key until you

 

reach the correct hour and A or P designation .

3)  Press Set Time again to display minutes only in clock

 display .

4)  Press and hold either the   or    touch keys until you 

 

reach the correct minutes .

5)  Press Set Time once again to display year .

6)  Press and hold either the   or   touch key until you

 

reach the correct year .

7)  Press Set Time once again to display month .

8)  Press and hold either the   or   touch key until you

 

reach the correct month .

9)  Press Set Time once again to display date of the month

 

along with day of the week at top row (which is auto-

 matic) .

10) Press and hold either the   or   touch key until you

 

reach the correct day of the month and day of the week

 

is automatically calculated and displayed at the top row .

11) Press Run Schedule once; now the display will show the

 

correct time and room temperature .

Automatic Daylight Saving Calculation

The Real Time Clock will adjust automatically for daylight sav-

ings time, in the following manner:

Increment one hour at 2 AM on the second Sunday of March 

and decrement one hour at 2 AM on the first Sunday of No

-

vember . (New DST effective 2007) .

The daylight saving feature can be enabled or disabled in 

installer configuration menu. Default is 

dS ON

 (enabled) .

After entering installer configuration mode, momentarily

press   or   touch key until the display indicates 

dS 

(in

actual temperature digits) and on (default – in clock digits) .

 and   keys will toggle display and operation from on to 

OFF .

Summary of Contents for 1F95-1277

Page 1: ...d in household trash Do not touch any spilled mercury Wearing non absorbent gloves clean up any spilled mercury and place in a sealed container For proper disposal of a product containing mercury or a sealed container of spilled mercury place it in a suitable shipping container Refer to www thermostat recycle org for location to send the product containing mercury Save these instructions for futur...

Page 2: ...ing existing mounting holes and the holes drilled are too large and do not allow you to tighten base snugly use plastic screw anchors to secure the base 4 Fasten base snugly to wall using mounting holes shown in Figure 1 and two mounting screws Leveling is for appearance only and will not affect thermostat operation 5 Connect wires to terminal block on base using appropriate wiring schematic see d...

Page 3: ...rature Limit and Keypad Lockout when limited range is activated and locked Displays only Temperature Limit when limited range is activated 2 Indicates period of day being programmed 3 RUN SCHEDULE run program button 4 SET TIME button or HOLD temperature button 5 Displays Change Filter when the system has run for the programmed filter time period as a reminder to change or clean your filter 6 COPY ...

Page 4: ...Anticipation cycle rate auxiliary This item is only to appear if HP 1 or HP 2 is selected above 10 10 8 CL OFF On Selects Compressor Lockout 11 11 9 dL On OFF Selects Continuous Display backlight intensity 12 12 10 dL LO HI Selects Backlight Intensity 13 13 11 0 4 LO to 4 HI Selects Adjustable Ambient Temperature Display range 4 LO to 4 HI 14 14 12 F C Selects F C Display temperature units in Fahr...

Page 5: ...nuously running during the periods of high demand Periods of high demand will nor mally occur during the late afternoon and early evening on the hottest days of the summer As demand lessens the adjustments to setpoint temperature are reversed until setpoint temperature returns to normal and Cool Savings no longer flashes 1 This control can be configured for MS2 Multi Stage System 2 heat 2 cool HP1...

Page 6: ...etting Heat Off Cool or Auto INSTALLER CONFIGURATION MENU 23 24 Select Fast Second Stage ON or OFF In the run mode with the fast Heat feature enabled FA Heat On if the Heat setpoint temperature is manually raised by 3 F 2 C or more above the actual temperature using the second stage will energize immediately With FA OFF second stage will not energize until the setpoint tempera ture is 1 F or more ...

Page 7: ...rogram Override period can range from 15 minutes to 7 days Example If you turn up the heat during the morning program it will be automatically lowered later when the temporary hold period ends To cancel the temporary setting at any time and return to the program press Run Schedule If the SYSTEM button is pressed to select AUTO the thermostat will change to Heat or Cool whichever ran last If it swi...

Page 8: ...an running continuously or Auto To return to FAN On Prog press Run Schedule Programming Tip Copy Program When programming your thermostat you may copy the pro gram from one day to another day or group of days using the Copy key In 7 day programming mode a day can be copied to another day or all six other days In 5 1 1 day programming mode the weekday Mon Fri program can be copied into Sat and Sun ...

Page 9: ...s with the times and temperatures you want Keep the following guidelines in mind when planning your program In Heating lower temperatures will save energy In Cooling higher temperatures will save energy If you plan on using Auto Changeover do not program the heating higher than the cooling Worksheet for Re Programming 5 1 1 and 7 Day Program Cooling Program Wake Up Leave For Work Return Home Go To...

Page 10: ...the local sensor is fixed In normal operation of the thermostat the current tempera ture displayed will be the weighted average of the local sensor and the remote sensor using the formula local sensor weight x local sensor temperature remote sensor weight x remote sensor temperature local sensor weight remote sensor weight Example Local sensor temperature is 80 and the remote sensor is 70 If weigh...

Page 11: ...on or place of purchase for a replacement If the thermostat clicks contact the furnace manufacturer or a HVAC service person to verify the heating is operating correctly No Cool 1 Cooling system requires service or thermostat requires replacement Same as diagnostic for No Heat condition except set the thermostat to COOL and lower the setpoint below the room temperature There may be up to a five mi...

Page 12: ...h Temtrol Venmar CES and Ventrol CES Group LLC is a subsidiary of Nortek Inc a glob al diversified company whose many market leading brands deliver broad capabilities and a wide array of innovative technology driven products and solutions for lifestyle improvements at home and at work www mammoth inc com CESGroup has a policy of continuous product improvement and reserves the right to change desig...

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