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Update README.md
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README.md
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README.md
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@ -170,19 +170,14 @@ Temperature sensors used in a system, comment to disable
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#define T_cold_out; //cold side outlet sensor
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#define T_before_evaporator; //"before" and "after evaporator" sensors are required to control EEV, both "EEV_ONLY" and "full" schemes
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#define T_after_evaporator; //"before" and "after evaporator" sensors are required to control EEV, both "EEV_ONLY" and "full" schemes
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//#define T_separator_gas; //no longer used (PCB 1.3 MI +) artifact from experimental scheme with separator
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//#define T_separator_liquid; //no longer used (PCB 1.3 MI +) artifact from experimental scheme with separator
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//#define T_before_valve; //no longer used (PCB 1.3 MI +) artifact from experimental scheme with separator
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//#define T_suction; //no longer used (PCB 1.3 MI +) artifact from experimental scheme with separator
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#ifdef SETPOINT_TS1
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#define T_sensor_1; //T values from the additional sensor S1 are used as a "setpoint" in "pool" or "water tank heater" schemes
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#endif
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//!!!
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#define T_sensor_2; //additional sensor, any source, for example: outdoor temperature, in-case temperature, and so on
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//#define T_sensor_2; //additional sensor, any source, for example: outdoor temperature, in-case temperature, and so on
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#define T_crc; //if defined: enables crankcase T sensor and crankcase heater on relay 4
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//#define T_regenerator; //an additional sensor, the regenerator temperature sensor (inlet or outlet or housing) is used only to obtain a temperature data if necessary
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#define T_afrer_condenser; //after condenser (and before valve)
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//!!!#define T_before_condenser; //before condenser (discharge)
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#define T_before_condenser; //before condenser (discharge)
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#define T_hot_out; //hot side outlet
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//in full scheme Hot IN required! optional in "EEV_ONLY" scheme (see "EEV_ONLY" option),
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#define T_hot_in; //hot side inlet
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@ -196,23 +191,18 @@ Temperature limits
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#define T_SETPOINT_MIN 10.0; //min. "setpoint" temperature that an ordinary user can set, lower values are not recommended until antifreeze fluids at hot side are used.
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#define T_CRANKCASE_MIN 8.0; //compressor (crankcase) min. temperature, HP will not start if T lower
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#define T_CRANKCASE_MAX 110.0; //compressor (crankcase) max. temperature, overheating protection, HP will stop if T higher
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#define T_CRANKCASE_HEAT_THRESHOLD 16.0; //crankcase heater threshold: heater will be powered on if T lower
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#define T_WORKINGOK_CRANKCASE_MIN 25.0; //compressor temperature: additional check. HP will stop if T is lower than this value after 5 minutes of work. Do not set the value too large to ensure normal operation after long pauses.
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#define T_CRANKCASE_HEAT_THRESHOLD 16.0;//crankcase heater threshold: heater will be powered on if T lower
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#define T_WORKINGOK_CRANKCASE_MIN 25.0;//compressor temperature: additional check. HP will stop if T is lower than this value after 5 minutes of work. Do not set the value too large to ensure normal operation after long pauses.
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#define T_BEFORE_CONDENSER_MAX 108.0; //discharge MAX, system stops if discharge higher
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#define T_COLDREF_MIN -14.0; //suction min., HP stops if T lower, cold side (glycol) loop freeze protection and compressor protection against liquid
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#define T_BEFORE_EVAP_WORK_MIN -25.5; //!!!before evaporator (after valve) min. T; can be very low for a few minutes after startup, ex: capillary tube in some conditions; and for all systems: after long shut-off, lack of reagent, 1st starts, and many others
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#define T_COLD_MIN -15.5; //cold side (glycol) loop freeze protection: HP stops if inlet or outlet temperature lower
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#define T_HOT_MAX 50.0; //hot loop: HP stops if hot side inlet or outlet temperature higher than this threshold
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//#define T_REG_HEAT_THRESHOLD 17.0; //no longer used (PCB 1.3 MI +) artifact from experimental scheme with separator
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//#define T_HOTCIRCLE_DELTA_MIN 2.0; //not used since ~FW v1.6, "water heater with intermediate heat exchanger" scheme, where Ts1 == "sensor in water"; hot side CP will be switched on if "Ts1 - hot_out > T_HOTCIRCLE_DELTA_MIN"
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```
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Watts, cycles times (milliseconds)
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```c
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#define MAX_WATTS 1000.0 + 70.0 + 80.0 //power limit, watt, HP stops in case of exceeding, examples: installation1: compressor 165: 920 Watts, + 35 watts 25/4 circ. pump at 1st speed + 53 watts 25/4 circ. pump at 2nd speed
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// installation2: compressor unk: ~1000 + hot CP 70 + cold CP 80 = 1150 watts
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// installation3: and so on
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#define MAX_WATTS 1000.0 + 70.0 + 80.0 //power limit, watt, HP stops in case of exceeding, example: compressor: ~1000 + hot CP 70 + cold CP 80
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#define POWERON_PAUSE 300000 //after power on: wait 5 minutes before the start of HP (protected from power faults)
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#define MINCYCLE_POWEROFF 600000 //after a normal compressor stop: 10 minutes pause (max 99999 seconds)
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#define MINCYCLE_POWERON 3600000 //after compressor start: minimum compressor operation time, i.e. work time is not less than this value (or more, depending on the setpoint temperature) 60 minutes = 3.6 KK 120mins = 5.4 kK.
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@ -262,11 +252,13 @@ Remember that you'll see refrigeration system reaction on every step not immedia
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//#define EEV_DEBUG //debug, usefull during system fine tuning, works both with local serial and RS485_HUMAN
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```
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Communication addresses
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```c
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const char devID = 0x45; //used only if JSON communication, does not matter for modbus and Valden display https://github.com/OpenHP/
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const char hostID = 0x30; //used only if JSON communication, not used for modbus
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```
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And last option
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Last option
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```c
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#define MAX_SEQUENTIAL_ERRORS 15 //max cycles to wait auto-clean error, ex: T sensor appears, stop compressor after counter exceeded (millis_cycle * MAX_SEQUENTIAL_ERRORS)
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```
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