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ABOUT HEAT PUMPS...

 

 
A heat pump is a mechanical refrigeration system that operates in two 
modes, heating and cooling.  In cooling mode, the heat pump takes 
indoor heat and pumps it outside, just like a standard air conditioner.  
In heating mode, the process is reversed: the heat pump takes outside 
heat and pumps it inside.  Although it feels cold outside, the air still 
has heat in it that the heat pump can use as a source of heat.  The fact 
that the heat pump 

moves

 heat from one place to the other (as opposed 

to 

creating

 heat directly from electricity or gas) is the key to it's 

remarkable efficiency.  A heat pump usually produces 

over 3 times 

more heat per watt of electricity than standard electric heating.

 

 
While some heat pumps use outside air as their source of heat, others 
use the heat available under the ground or in a water well.  These are 
called air-source, ground-source, or water-source heat pumps, 
respectively. The RC-112 is capable of controlling all of these types of 
heat pumps.

 

 
The RC-112 controls two stages, or speeds on your heat pump, both in 
heating and in cooling mode. This results in quiet, efficient low speed 
operation under mild weather conditions, with added high-speed 
power when needed for harsher conditions.

 

 
In extremely cold conditions, the heat pump may require assistance 
from another source of heat, known as "auxiliary heating".  Auxiliary 
heating is less efficient than the heat pump, so it is best to use the heat 
pump instead of the auxiliary heat.

 

 
For normal and most efficient operation, the RC-112 should be in 
HEAT or AUTO mode so that it can properly control the auxiliary 
heat.  The heat pump is used first, auxiliary heat is used only if 
necessary.

 

 
In 

EMERGENCY HEAT

 mode, the RC-112 will turn the heat pump off 

and use the auxiliary heating only.  This mode may be used if the heat 
pump has failed. 

 

 

Summary of Contents for OMNISTAT RC-112B

Page 1: ...N I S T A T ELECTRONIC COMMUNICATING THERMOSTAT Owner s Manual RC 112B RC 112BZ Two Speed Heat Pump 3 Stage Heat 2 Stage Cool With Energy Efficient Control Document Number 13R00 5 May 2007 AUTO DAY CO...

Page 2: ...found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules This product generates and can radiate radio frequency energy Due to its low power design it is unlik...

Page 3: ...1 DESCRIPTION 1 MAINTENANCE 1 OPERATION 4 DISPLAY 7 FILTER REMINDER 9 ANTICIPATION 9 SETTING THE CURRENT TIME AND DAY 10 PROGRAMMING 11 SETTING TIME SCHEDULES 12 DAY NIGHT MODE 13 SYSTEM MODE 13 AUTO...

Page 4: ...ity of being controlled both locally and by remote control It offers programmability stand alone operation and robust communications with automation systems utility control systems and personal comput...

Page 5: ...nd or in a water well These are called air source ground source or water source heat pumps respectively The RC 112 is capable of controlling all of these types of heat pumps The RC 112 controls two st...

Page 6: ...r heat pumps should not be set back for periods of time less than 4 to 6 hours The RC 112 has microprocessor intelligence that continually monitors the performance of the heat pump and uses the auxili...

Page 7: ...t will guide you through normal operation of your thermostat 2 Hold Press the Hold key to set the system into Hold mode In Hold mode the thermostat will not change its settings by program When hold mo...

Page 8: ...the cooling system responds to maintain your desired cooling setting In Auto mode your thermostat will automatically switch between heat and cool to maintain your desired heating and cooling settings...

Page 9: ...8 Aux Heat Indicator The AUX HEAT indicator green glows when the auxiliary heat is on 9 Check Indicator The CHECK indicator red may be used to indicate a malfunction of the heat pump or for some other...

Page 10: ...gs 2 Time Display Shows the current time of day 3 DESIRED DESIRED is displayed when the temperature display shows the desired temperature setting 4 OUTSIDE OUTSIDE will be displayed when the temperatu...

Page 11: ...yed when in automatic changeover mode 8 HEAT HEAT is displayed when the system is in Heat mode EM HEAT is displayed when the Emergency Heat is on 9 FAN FAN is displayed when the fan is set to run cont...

Page 12: ...the need to turn the system on or off before the temperature is actually at the setting As humans we perceive temperature as a combination of heat in the air and heat radiated from the walls and surro...

Page 13: ...k 1 Use the arrow keys to change the hour 2 Press the Prog key to advance to minutes 3 Use the arrow keys to change minutes 4 Press the Prog key to advance to day of week 5 Use the arrow keys to set t...

Page 14: ...ly exit programming mode after 20 seconds of no key activity When programming a time for the Morning Day Evening or Night period the time will be increased or decreased in 15 minute increments If the...

Page 15: ...h 1 Use the arrow keys to change the scheduled time for the displayed period MORN DAY EVE or NITE 2 Press the Prog key to advance to the next item 3 Use the arrow keys to change the desired cool setti...

Page 16: ...can use the arrow keys to override the temperature settings or press the Hold key to prevent any future remote changes Follow the procedure shown in Programming Mode to change the programmed DAY and N...

Page 17: ...POWER OUTAGES The thermostat will restart the heating cooling system 3 to 8 minutes after the electricity comes back on All settings and programs are stored permanently and will not be affected by a p...

Page 18: ...ed to plan changes to the current schedule WEEKDAYS SATURDAYS SUNDAYS MORN 6 00 AM 8 00 AM 8 00 AM COOL 78 78 78 HEAT 70 70 70 DAY 8 00 AM COOL 85 85 85 HEAT 62 62 62 EVE 6 00 PM COOL 78 78 78 HEAT 70...

Page 19: ......

Page 20: ...n this warranty are the sole and exclusive remedies therefor In no event shall HAI be liable for incidental expenses or consequential loss or damages Any implied warranties including warranties of mer...

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