these are the main factors. 0 No 1 Yes 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) . Compressor Settings. option 1: droop control outdoor temp. What should happpp pen to the OSA dampers when the building is unoccupied? This is set to 300 seconds (5 minutes) by default. • Defrost cycle every 30, 60 or 90 minutes of compressor "on" time at outdoor coil temperatures below 42°F • Factory setting - 90 minutes • Anti-short cycle, timed-off control - 5 minutes • Compressor delay - 30 seconds (field selectable) cycles the compressor in and out of defrost mode 1 1 m28706 if room temperature drops (exceeds droop setting at function 20), compressor is deactivated. This safety feature makes turning the system back on possible until the reset button on the outside unit is pressed back in. This balance point will vary from home to home and factors that must be taken into consideration are number of people living in home, home's HVAC system and sizing, home's building and insulation qualities, and home's orientation to N-S-E-W. there are other factors as well. The colder it gets, the less amount of heat you get from it, and the lower the efficiency (C.O.P.) Could be 15, 20, 24 degrees F etc. 65°f (18°C) 0 No 1 Yes 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) . Once your thermostat is set up and running, here's how to select emergency vs. auxiliary heat: Go to SETTINGS > EQUIPMENT. Auxiliary Heat Lockout Settin_ The "auxiliary heat lockout" setting is an optional lockout feature. Lockout is one way to control hazardous energy. both the compressor and electric backup heat will operate. The lock-out switch is a magnetized switch that can wear out over time. 35), the compressor is locked-out and ONLY the auxiliary will run when the outdoor temp drops below the specified temp. A lockout-tagout (LOTO) procedure is a safety system used to prevent accidental or unauthorized access to electrical power sources that are undergoing maintenance or other work. This could be 0 or -10°F. Compressor operation is enabled when the temperature rises 5 o F above the lockout setpoint. You are fine running your heat pump at 25F and below. The point at which the extractable heat energy gets too low for a heat pump to adequately heat your home is called the balance point. Natural gas at $1.44 per therm, 80% efficient furnace: (1,000,000 / 100,000 btu per therm) x 1.44 / .8 = $18 The thermostat shall energize heating equipment when space temperature falls below the heating setpoint. Heat Pump Prep Test. The balance point is when the heat required to heat the building is more than what the heat pump can put out. If you set it to "Balanced" or "Max savings", you can have a setback schedule without wasting energy. The compressor protection will not turn off on my honeywell…. About Trane Setting Compressor Lockout . (I set this to zero) The temps in between is when both run as needed. Ambient lockout This indicates that either the outdoor temperature is above or below the balance point temperature settings. The balance point temperature is about 25 °F in this case. Being hardwired, there are no batteries to fail (run wire one time). . See the OSH Answers Hazardous Energy Control Programs for a description of the types of hazardous energy, and required elements of a control program. AUXILIARY LOCKOUT TEMPERATURE. To help ensure a better night's rest, consider re-setting your thermostat before you go to bed, leaving enough time for the temperature in your bedroom to adjust. I am not sure how the HW Prestige handles this signal. The low balance point setting prevents heat pump heat-ing below the set point and back up heat will be used. Lockout is one way to control hazardous energy. Answer (1 of 5): Nest has recently launched a feature called Heat Pump Balance, specifically for heat pumps with auxiliary heat. AUXILIARY HEAT. When it reaches the switch-on point of the low-pressure switch, this will switch the compressor back in. OUTDOOR TEMPERATURE. • Store the compressor between Ts min and Ts max values for LP side indicated on compres-sor nameplate. 0 Compressor Oil Type // Charge oz. The major difference is that a heat pump also has a. What is the purpose of a lock-out relay? In the lower right . The low balance point setting prevents heat pump heating below the set point and back up heat will be used. Other ways of reducing aux heat usage with this thermostat is to maintain a constant thermostat set point, or if you must set back for comfort (like us) keep the setback to 2f. 3. Sequence of Operation for Conventional Systems. 2 Droop control with Aux Heat Lockout** 20 Droop temperature (dual fuel) 2 Auto temperature droop 2° F (1° C) . These thermostats allow the system to employ . 1 ** for geothermal heat pumps, the balance point can be disabled at setup function 24. option 0: no droop control 40 . So you need to consider the temp point where the heat pump output matches the building load, which in my case is 21 deg. Two-stage cooling means the air conditioner or heat pump has a compressor with two levels of operation: high for hot summer days and low for milder days. Lock out or Reset Overheating caused by clogged air filters or other factors can cause an air conditioner to shut down and even go into a lockout mode. Updated on September 23, 2019. If set to a specific temperature (i.e. Low Balance Point Outdoor temperature low balance point . The thermostat shall energize heating equipment when space temperature falls below the heating setpoint. Same three-leg mount 3. . 1. Updated on September 23, 2019. 8 Flashes FS2 Compressor Lockout Off On Off Off Off. For any temperatures below the balance point, supplemental heat will be required. In fact, you should save energy. Charged with POE oil (so may be used with R-22 or R-407C) 4. My compressor lockout / balance point is at 30° and the Backup heat lockout is set to off. COMPRESSOR LOCKOUT TEMPERATURE. You should never lock out your heat pump compressor until you are well under the system balance point. Select a Heat Pump Balance setting. (This option is only displayed if the outdoor sensor is enabled .) Tap Heat Pump Balance. Option 9 (Heat Pump Lockout): Set at Of (f), the compressor (heat pump) will always run (with the auxiliary) no matter how low is the outdoor temp. If any of these problems are detected users should clean the switch of any visible contaminates using hot soapy water. 355 - Balance Point - Set to 15°F, or whatever outdoor temperature is desired for compressor lockout (Compressor Lockout) and switchover to Aux Heat 356 - Aux Heat Lockout - Set to 45°F, or whatever outdoor temperature is desired to prevent switchover to Aux Heat 365 - Cool 1 CPH - Compressor cycle rate, Set to 1 CPH (Cycles Per Hour) 370 . Table 9. With this mounted near the compressor coils (mine is inside the housing), I can program the thermostat to lockout the heat strips (above 40 degrees) and the compressor below 20 degrees (balance point for this unit). . (This option is only displayed if the outdoor sensor is enabled . ) 1 1 Flashes Compressors locked out because the Economizer is using free. High Balance Point Outdoor temperature high balance point . 2 Droop control with Aux Heat Lockout** 20 Droop temperature (dual fuel) 2 Auto temperature droop 2° F (1° C) . If the regulating thermostat subsequently reaches its switch-on point and opens the solenoid valve, then the pressure in the suction line will rise. 10 Flashes Compressors Locked Out on Low Outdoor Air Temperature1Flashing On Off On Off. TestNew stuff! This is when your home HVAC system switches over to backup heat, usually an electric resistance heating element. At 25°F (-4.0°C) or be- If temperature is not reached in a reasonable time, set the upstage timer (Function 0346). T he Compressor Lockout setting is displayed on the left and must be set . At a specific threshold value the low-pressure switch then switches the compressor off. 28. Set Compressor Lockout to the temperature below which it is inefficient to run the heat pump. The point at which the extractable heat energy gets too low for a heat pump to adequately heat your home is called the balance point. When outside temperature is below this setting, thermostat will TYPES OF WAY AN OUTDOOR THERMOSTAT CAN BE INSTALLED. Compressor lockout is the temp at which point the geo stops and it focuses on all electric heat. Visual inspection for corrosion, dirt or other contaminants can be helpful. The HeatPump Aux lockout (setting 360) set to 40 degrees F, or 4.5C. Heat Pump Balance lets you select a level of comfort and energy savings that you like: more comfort, more savings, or a. (Compressor clutch engaging and disengaging) 2-AC not working. With this secured process, all individuals working on the same circuit or equipment have individual locks that they secure onto a . Bryant Evolution Connex Control Installation Manual details for FCC ID 2AK6N-BBECC01B made by United Technologies Electronic Controls Inc.. 20°f (-6°C) 10°F to 50°F (-12°C to 9°C) or OFF to ignore 29. A balance point can be calculated by HVAC pros. BOTH COMPRESSOR AND. Typically the default is 25°F (-4.0°C), but that setting can be adjusted by your dealer. Emergency (Stage 3 with no compressor) is manually selected at the thermostat. 355 - Balance Point - Set to 15°F, or whatever outdoor temperature is desired for compressor lockout and switchover to Aux Heat (Compressor Lockout) 356 - Aux Heat Lockout - Set to 45°F, or whatever outdoor temperature is desired to prevent switchover to Aux Heat 365 - Cool 1 CPH - Compressor cycle rate, Set to 1 CPH (Cycles Per Hour) Herein, what is AC compressor lockout mode? The place where the home heating requirement and heat pump output lines cross is the balance point. When the outdoor temperature is above the . 0345 (Dual fuel heat pump control) 2 = Balance point/Aux heat lockout plus 2 deg F droop 0350 -12C Heat pump compressor lockout 0360 -12C Heat pump Aux lockout I believe that those options willl do what you want to accomplish. •Heat pump capacity drops at colder temperatures. The compressor protection will not turn off on my honeywell…. What are the best or most cost effective settings for the compressor lockout (balance point) and heat pump aux lockout? A screen for mode 3120, outdoor temperature lockouts will be displayed. Heat pumps work most efficiently when maintaining a temperature. Balance Point If system is not sized correctly, you run into comfort issues when strip heat is locked out. At 25°F (-4.0°C) AUXILIARY ONLY. suemarkp said: The only thing that doesn't make sense to me is to lockout the compressor below the balance point. Consequently, it is recommended to only lower your set point by 3˚ - 5˚ when your system is in the unoccupied or night setting. These are all signs that a/c compressor in your car is about stop working or fail: 1-Clicking sound from under the engine. The temperature where they cross is the heat pump balance point. Balance Point (Compressor Lockout) Off, 5 °F to 60 °F (in 5 °F increments) or -15.0 °C to 15.5 °C (in 2.5 °C or 3.0 °C increments) Compressor Lockout requires an outdoor temperature. From the drop-down menu, scroll and select "COMPRESSOR LOCKOUT/BALANCE POINT". See the OSH Answers Hazardous Energy Control Programs for a description of the types of hazardous energy, and required elements of a control program. 40 balance point ** compressor and fan operate fossil fuel backup heat only 1 option 2: droop control with aux heat lockout compressor and fan operate 40 55 balance point ** auxiliary lockout compressor and fan only . The control module commands a compressor stage and a stage run time based on the temperature from the outdoor ambient temperature sensor and the demand signal. In practice, lockout is the isolation of energy from the system (a machine, equipment, or process) which physically locks the system in a safe mode. I have a Honeywell Vision Pro 1AQ Thermostat and the default lock out is set at 40 . Aux (Stage 3 with compressor) will call when the room temp is x degrees below your set point. Now we're ready to take it further. Ambient lockout This indicates that either the outdoor temperature is above or below the balance point temperature settings. My compressor lockout / balance point is at 30° and the Backup heat lockout is set to off. So turning off heat pump condenser completely is not effective way of running a heat pump. 50. Typically the default is 25°F (-4.0°C), but that setting can be adjusted by your dealer. It does require an outdoor sensor. However it is possible a compressor lockout signal can enable emergency heat at the thermostat. 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. Compressor Lockout While not required by the PTCS Spec, they should be disengaged to let the compressor run at all outdoor temps. The efficiency of a heat pump decreases as the outdoor temperature drops, and at a certain point, called the _____, the heat pump can no longer supply enough heat to properly condition the structure. Below that temp the capacity is lower than the load of the house but it is not zero. With this secured process, all individuals working on the same circuit or equipment have individual locks that they secure onto a . Oct 16, 2011 High balance point is the temp at which you don't need the aux heaters to help the heat pup maintain set temp. 40 balance point ** compressor and fan operate fossil fuel backup heat only 1: option 2: droop control with aux heat lockout: compressor and fan operate 40 55 balance point ** auxiliary lockout compressor and fan only fossil fuel backup heat only 1): français: voir la page 9 • español At outdoor temperatures below the low balance . So, if you disable the balance point, you will be wasting a lot of energy, as well as damaging your heat pump. fossil fuel backup heat is activated after 3 minute delay. balance point. of the heat pump. Tap Settings . com Trane has a policy of continuous product data and product improvement and reserves For more information contact your local district the. Most of today's thermostats are programmable and allow you to set a schedule to match your preference. When should outside air dampers switch to minimumWhen should outside air dampers switch to minimum position? This setpoint is about equivalent to the "balance point" of the house, where the house structure is losing heat to the outdoors at about the same rate the heat pump compressor, by itself can bring heat in. [Options: 0 (off) to 16 hours] 22 Outdoor air sensor? 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) 16 ISU # Description Setting 3180 Backup heat lockout Off 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) 3200 Cool cycles per hour 1 - 6 As a starting point, you can try setting the Aux Lockout 5-10f above the system design temperature (aka balance point) per the paperwork you received from your WF dealer. 4. (This setting is about 4 or 5 from the rightmost end, or about 15 steps from the left) You'll see "Equipment detected" and a diagram of the backplate with the wires that are connected and their labels. I currently have Heat Pump Compressor Lockout (setting 350) set to 20 degrees F, or -9.5C. 3. An air-to-air heat pump has many of the same components as an air conditioning system. When the outside temperature is below this setting, the . 4-Burned rubber smell coming out from the engine compartment. From above graph you can see that around 30 there is a balance point between load and capacity of heat pump. I can also read the outside temperature on the thermostat. Using Heat Pump Balance, Nest dyn. 40 balance point ** compressor and fan only fossil fuel backup heat only outdoor temp. Select your thermostat. Document Includes User Manual SYSTXCCITC-01SI. Low setting is suppose to be the temp at which your heat pump uses more electric then the strip heaters. because I can only use 5 deg numbers (20, 25, 30, etc) in the temp field which I set as my compressor lockout, I think I will stick with 25 deg (where the heater run time is 92% when on heat pump). COMPRESSOR ONLY. 19 Low Ambient Compressor Lockout. Typically the default is 25°F (-4.0°C), but that setting can be adjusted by your dealer. Compare the costs of 1 million btus of heat for a heat pump vs a natural gas furnace. » Ambient lockout - This indicates that either the outdoor temperature is above or below the balance point temperature settings. A general recommendation is that the optimal temperature for sleeping is between 60⁰ and 67⁰ F, regardless of the season outside. Aux heat lockout is the temp that regardless of circumstance, the aux heat cannot come on until the temp is below. Cooling 1Flashing On Off On On. So I've set the aux lockout from 35 degrees to 25. In practice, lockout is the isolation of energy from the system (a machine, equipment, or process) which physically locks the system in a safe mode. System Setting. The control module also modifies a lockout threshold based on a cycle run time, where the cycle run time is an actual run time for the compressor to meet a setpoint temperature. 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. . If the problem persists the switch will need to be replaced. This screen shows the activated lockout temperatures for both the compressor lockout and auxiliary heat lockout. Where the two lines cross is the balance point. 3-Noise under the engine with the a/c climate control on. Below that point, running the compressor does not accomplish much, so it is locked out and the back-up heat source is the sole provider of heat. Set Compressor Lockout to the temperature below which it is inefficient to run the heat pump. It tells you at what temperature the heat pump is just able to keep the house at the indoor design temperature (normally 70 °F). The low balance point setting prevents heat pump heating below the set point and back up heat will be used. The temperature range is 5-55 °F. Compressor Minimum Cycle Off Time: The amount of time the compressor remains off between cycles. This is in addition to the "balance point." The purpose of this feature is to lock out the gas furnace whenever the outdoor temperature is above the selected setting. As it gets colder, the heat pump puts out less and the heat required in the house increases. Your heat pump may turn on earlier to reach your target temperature, and your lockout temperature will be set to a lower temperature which means AUX heat will typically turn on later and less often. AUX heat can cost about 2 to 5 times as much as running your heat pump. option 1: droop control outdoor temp. To locate the balance point, the heating requirement (BTUs/h) of the house and the heat pump output (BTUs/h) are plotted against the changes in outside temperature. Balance Point (Compressor Lockout) Off, 5 °F to 60 °F (in 5 °F increments) or -15.0 °C to 15.5 °C (in 2.5 °C or 3.0 °C increments) Compressor Lockout requires an outdoor temperature. 9 Flashes Ignition Control Locked Out / Ignition Control Failure Off On Off Off On. 40 balance point ** compressor and fan only fossil fuel backup heat only outdoor temp. Balance Point (Compressor Lockout) Off, 5 °F to 60 °F (in 5 °F increments) or 15.0 °C to 15.5 °C (in 2.5 °C or 3.0 °C increments) Compressor Lockout requires an outdoor temperature.