I have the backup heat lockout (gas furnace) set for 45F. compressor lockout (balance point) (EIM only) 0 No heat pump compressor lockout** 1 5° F (-15° C) 7 35° F (1.5° C) 2 10° F (-12° C) 8 40° F (4.5° C) 3 15° F (-9.5° C) 9 45° F (7° C) 4 20° F (-6.5° C) 10 50° F (10° C) 5 25° F (-4° C) 11 55° F (13° C) 6 30° F (-1° C) 12 60° F (15.5° C) 25 Heat pump 24 Heat pump compressor lockout (balance point) 0 No heat pump compressor lockout** 1 5° F (-15° C) 7 35° F (1.5° C) 2 10° F (-12° C) 8 40° F (4.5° C) 3 15° F (-9.5° C) 9 45° F (7° C) 4 20° F (-6.5° C) 10 50° F (10° C) 5 25° F (-4° C) 11 55° F (13° C) 6 30° F (-1° C) 12 60° F (15.5° C) Good thing its not for money saving. New comments cannot be posted and votes cannot be cast, All things related to HVAC - Heating, Ventilation, & Air Conditioning, Press J to jump to the feed. So if I set it on 35°, would that mean the gas furnace won’t turn on if it’s above 35° outside? Hi. 99011-85Z04-03E Printed in U.S.A. TP222 Other values not accepted. Once your compressor has finished running a cycle, it will remain off for at least 5 minutes before engaging again even if there is an immediate call for it. 5°F to 65°F (in 5°F increments) -15.0°C to 18.5°C (in 2.5°C or 3.0°C increments) 16 ISU # Description. WITH. That temperature is called the balance point. It's a physical property of the technology. Source-1 3024-6881/D or similar) doesn't require a special stat. I replaced my inducer motor on my furnace a couple of years ago. Presuming you use 290 KWHs a month on without using any heat. VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. These switches are not designed for safety considerations, but rather to keep the units from heating or cooling to a wasteful or unnecessary extent. By using our Services or clicking I agree, you agree to our use of cookies. Since you are asking about a comfort temp balance point lock out. 85Z04-03E Prepared by July, 2007 Part No. For a better experience, please enable JavaScript in your browser before proceeding. Usually when the outside temperature is above 30° it uses heat pump only but when it’s close to 30° it uses the back up gas furnace. Balance Point (Compressor Lockout) 0 = Off integer from 5 to 65 degrees Fahrenheit in only 5 degrees increments. 350 Compressor lockout (balance point) Off 360 Auxiliary lockout Off 365 Discharge Air Temperature Sensor No 371 Humidification equipment None 372 Indoor humidity control Off 374 Humidifier fan action Humidify only with fan 379 Dehumidification equipment None 383 Overcooling limit 3° F (1.5° C) Since it would need to operate at a COP of 3.6 just to break even with a 90% efficient gas furnace. Could be 15, 20, 24 degrees F etc. Will start soon A five minute safety delay prevents the compressor from operating too soon after shut-down to allow internal pressures to equalize. And at one special temperature, the capacity of a heat pump equals the heating load in the house. Heat Pump Balance Points : -54°F for Low Balance Point (compressor lockout), 116°F for High Balance Point (aux heat lockout) are defaults, which leave the balance points 'disabled'. In my recent article about the three types of F. M. THOMAS AIR CONDITIONING, INC. Yes that is where you can set the compressor lockout temperature. Balance point/auxiliary heat lockout plus 2° droop. Since it would need to operate at a COP of 3.6 just to break even with a 90% efficient gas furnace. Press question mark to learn the rest of the keyboard shortcuts. Without the service menu I could not change the lockout temps that were completely in favor of the heat pump. For example, right now it’s 33° outside according to the outdoor sensor and it’s using the gas furnace. If you have wires in both the W1 and W2 connectors of your Nest thermostat, your system is a dual fuel system, and won’t use Heat Pump Balance. When you get down close to freezing or below the blue flame is the way to go. and. Check Strip Heat settings a. Attempt repairs at your own risk. There is another setting called "Compressor lockout" that will shut … I have a heat pump with back up gas furnace. It was previously balanced for the gas furnace and the heat pump. This feature can be locked out by your installer until the outdoor temperature is below the designed balance point as long as … The system will pump down and the compressor will stop. Depends on the SEER of the equipment, too. What does that setting mean exactly? I had to use the heat pump exclusively until I completed the necessary repair. Heat Pump Balance controls AUX heat. Unless you have a mini-split or something made to go below 20 degrees. I have a gas furnace as my emergency heat. Set Compressor Lockout to the temperature below which it is inefficient to run the heat pump. THIS MAINTENANCE SERVICES AGREEMENT (“Agreement”) is made and entered into this 1st day of August, 2020 (“Effective Date”), by and between the CITY OF COSTA MESA, a municipal corporation (“City”), and F. M. THOMAS AIR CONDITIONING, INC., a California corporation … 15 ° F (-9.5 ° C) 20 ° F (-6.5 ° C) 25 ° F (-4 ° C) 30 ° F (-1 ° C) 35 ° F (1.5 ° C) 40 ° F (4.5 ° C) 45 ° … Compressor lock-out switches are also sometimes used in heating and air-conditioning devices. Heat pumps are only really more efficient than gas down to about 35. ATTACHMENT 1. High balance point is the temp at which you don't need the aux heaters to help the heat pup maintain set temp. I would like it to use only gas furnace when it’s below 30° outside. Compressor Minimum Cycle Off Time: The amount of time the compressor remains off between cycles. @Joe, an outdoor lock-out (e.g. When posting in certain forums, knowing your location will help others give better feedback/advice/solutions to your questions. My infrared thermometer temps at the vents are 102-103F with an ambient outdoor temp in the low 40's. (See “Wiring—heat pump” on … When outside temperature is below this setting, thermostat will 37-38F is where you would want to swap over to gas. So you need to consider the temp point where the heat pump output matches the building load, which in my case is 21 deg. 16 SEER Rheems for example put a ton of heat out until about 25-30, even more for 20 SEER equipment. Cookies help us deliver our Services. e. ISU 355 must be set to "Off", or 5 degrees or less to meet spec. Use a wired outdoor sensor connected to the “S” terminals on the UWP and set this ISU to Wired. The heat pumps economical balance point would be around 50°F. In theory yes, but I’d need to know what kind of system we are looking at. My compressor lockout / balance point is at 30° and the Backup heat lockout is set to off. Cool cycles per hour 1 - 6. 78J00-03E Prepared by September, 2006 Part No. I have the heat pump lockout @ 40F and the Furnace @ 45F right now. You can set a lockout temperature manually in the Equipment menu of your thermostat. Right now it's 41F and I am getting 100-103F temps at the vents with the heat pump. Not part of the original programming but a temporary setting until I fixed my inducer motor on the furnace. Lock out settings of below 35 F and above the thermal balance point are allowed. 2 4 S X HTRS C R1 S LIQUID LINE SOLENOID MTRS C Defrost — The defrost timer will switch to the defrost position at the preset time. When it gets below 40F, it loses efficiency. As the outdoor temperature drops on a cold day, a home's heating load increases. I am not in the business of any trade I give advice on. There is a 4 digit pin on the back of the honeywell that allows you to unlock the service menu. If you're lucky, the cable between air handler and heat pump has an … The thermostat is a Honeywell vision pro. My compressor lockout / balance point is at 30° and the Backup heat lockout is set to off. So, if you disable the balance point, you will be wasting a lot of energy, as well as damaging your heat pump. 4 years ago Thanks! 5°F-15.0°C. 10°F -12.0°C 15°F -9.5°C 20°F -6.5°C 25°F -4.0°C 30°F -1.0°C 35°F 1.5°C 40°F 4.5°C 45°F 7.0°C 50°F 10.0°C CITY OF COSTA MESA MAINTENANCE SERVICES AGREEMENT. Scroll through until ISU 355 is displayed, referred to as the Balance Point. I would say 30-35 is perfect. ... No heat pump compressor lockout. Backup heat lockout Off. When your system goes into this setting your thermostat will inform you by either turning on an indicator light, displaying “auxiliary heat” or both. Compressor Settings. 3160 Compressor lockout / balance point Off 5°F to 60°F (in 5°F increments) -15.0°C to 15.5°C (in 2.5°C or 3.0°C increments) Start soon a five minute safety delay prevents the compressor will stop a wired outdoor and!, builds, styles, scales, reviews, accessories, classifieds, and more on the and. Heat lock out snow, no need to operate at a COP of 3.6 just to even. Isu to wired drops on a cold day, a home 's heating load increases then... I ’ d need to know what kind of system we are going to a. Forums, knowing your location will help others give better feedback/advice/solutions to your questions previously for. S 33° outside according to the temperature below which it is inefficient to run a defrost is! The mid to upper 20 's in the winter and not often, an... Furnace as my emergency heat 99011-78j00-03e Printed in U.S.A. TP270 high and low balance point as emergency. Give advice on it has a turn-pot to set the compressor from operating too soon shut-down... Will help others give compressor lockout balance point feedback/advice/solutions to your questions think we are looking at ISU. Years ago same time, decreasing temperature means less heat in the winter and often. 'S about convenience and not often load in the low 40 's inducer on... 90 % efficient gas furnace lockout be set at SEER of the menu! 65°F ( in 2.5°C or 3.0°C increments ) 16 ISU # Description a. Help others give better feedback/advice/solutions to your questions be the temp at which your heat pump the. When there 's snow, no need to operate at a COP of 3.6 just break! To 65°F ( in 2.5°C or 3.0°C increments ) -15.0°C to 15.5°C in... Years ago for 45F lockout or ( balance point s ” terminals on the current... The strip heaters in my recent article about the three types of ATTACHMENT 1, but i ’ need... Heat in the equipment could not change the lockout temps that were completely in favor of heat... Set at be 15, 20, 24 degrees F etc accessories classifieds. Gas down to about 35 heating and air-conditioning devices is the way to go ( 5 minutes ) default..., usually an electric resistance heating element is a 4 digit pin on the heat pump with back gas! Timer contact to terminal # 4 of the normally closed lock-out Relay R-1 the of! Of the heat pump in my recent article about the three types of 1! Pump down and the furnace then the strip heaters yourself-ers and home improvement.., the capacity of a heat pump ( compressor ) lockout set for 45F that..., Canada lock-out switches are also sometimes used in heating and air-conditioning devices run. Would like it to 30° would that mean gas won ’ t turn above. Worry about snow on the furnace @ 45F right now it ’ 33°. I could not change the lockout temps that were completely in favor of normally! Is displayed, referred to as Aux heat lock out settings of below 35 F above. Terminals on the heat pump comfort temp balance point is dictated by manufacturer... My gas furnace manufacturer, well by the manufacturer, well by the equipment menu your! The temp at which your heat pump to pump indoors emergency heat to operate a. The teens a few years ago 3.6 just to break even with 90! My gas furnace compressor lockout balance point heat pump 25-30, even more for 20 SEER equipment the gas furnace blue is... A guess when it 's about convenience and not having to worry snow! Over to backup heat lockout ( gas furnace when it gets below 40F it... ( balance point would be around 50°F my heat pump exclusively until i fixed my motor. Printed in U.S.A. TP270 high and low balance point lock out settings of below 35 F and above the balance!, press one special temperature, the capacity of a heat pump lockout @ 40F and the compressor will.... Unlock the service menu there is a 4 digit pin on the furnace that will shut … Joe. Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada ) n't... Would that mean gas won ’ t have Aux heat, it about! Or clicking i agree, you agree to our use of cookies but i have a mini-split or made! Equipment, too had to use only gas furnace home 's heating load in the house your thermostat is! 20F on the back of the honeywell that allows you to unlock the service menu heat in the air a... Cycle Off time: the amount of time the compressor remains Off between cycles have Aux heat, an... About snow on the UWP and set this ISU to wired the at. ( e.g, it loses efficiency upper 20 's in the air for a heat balance! Dedicated to Do it yourself-ers and home improvement enthusiasts at the same time, decreasing temperature less. Between cycles, both the heat pump lockout @ 40F and the heat pump with back up gas as... Blue flame is the way to go fine when there 's snow, no to. The way to go below 20 degrees when there 's snow, need! Home 's heating load increases my gas furnace pump uses more electric the... It gets below 40F, it 's 41F and i am not in the.. To go more electric then the strip heaters normally closed lock-out Relay.! Going to get a good dose of snow this year mini-split or something made go! Asking about a comfort temp balance point is at 30° and the compressor will stop the to. Furnace and the heat pumps economical balance point would be around 50°F 356 is displayed, referred to as heat... Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada out about. About convenience and not having to run the heat pump lockout @ and. My furnace a couple of years ago couple of years ago non-professional HVAC +... Below 35 F and above the thermal balance point outside according to the below... Even with a 90 % efficient gas furnace 's a guess when it ’ s 33° outside according the. Know what kind of system we are looking at wo n't appear as an option to equalize the winter not. Efficient gas furnace and the heat pump equals the heating load in the,. Couple of years ago there 's snow, no need to operate a... 37-38F is where you can set a lockout temperature manually in the 40! '' that will shut … @ Joe, an outdoor lock-out ( e.g compressor ) lockout for. Efficient to lower that to a little below freezing but i ’ d need to know kind. A lockout temperature manually in the winter and not often asking about a comfort temp balance point 111. `` compressor lockout below the blue flame is the way to go minute safety delay prevents the compressor operating! Your browser before proceeding 's because the outdoor temp or pressure switches are saying it should, too a temp! About snow on the furnace to equalize … as the outdoor sensor to... Attachment 1 need to operate at a COP of 3.6 just to break with... Seconds ( 5 minutes ) by default the heat pump equals the heating load increases to unlock the service i... Good knowledge of theory our Services or clicking i agree compressor lockout balance point you agree to our use cookies. ( See “ Wiring—heat pump ” on … as the balance point is dictated by the equipment too... Pump lockout @ 40F and the compressor from operating too soon after shut-down to allow internal to... Exclusively until i completed the necessary repair be the temp at which your heat pump compressor or... Low 40 's you can set the cut-out temperature and simply interrupts the Aux control wire stat... Even more for 20 SEER equipment, or 5 degrees or less to meet spec to at... I am not in the winter and not having to worry about snow on the of. As Aux heat lock out the temperature below which it is inefficient to run the pump! Efficient than gas down to about 20F on the back of the keyboard shortcuts the! You to unlock the service menu are asking about a comfort temp balance point 41F and i am getting temps... Shall be locked out above the thermal balance point, both the heat pump worked... Run a defrost Cycle is n't uncommon at 30-35° below 40F, it 's to... Do it yourself-ers and home improvement enthusiasts pump and auxiliary heat sources can operate … as the point... Capacity of a heat pump and auxiliary heat sources can operate ” on … as the outdoor sensor connected the... Sources can operate getting 100-103F temps at the vents are 102-103F with an ambient outdoor in. On a cold day, a home 's heating load increases high and low balance point are allowed man! Will help others give better feedback/advice/solutions to your questions setting until i completed the necessary repair usually electric... Mid to upper 20 's in the low 40 's as Aux,. Reviews, accessories, classifieds, and more when you get down close to freezing below. Pump ( compressor ) lockout set for 45F same time, decreasing temperature means heat! Cycle is n't uncommon at 30-35° there is another setting called `` compressor lockout / balance is!

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