HVAC. TADPT2 Thermostat Adaptor Sequence of Operation TECHNICAL BULLETIN Concept. Dip Switch and Dial Settings

Transcription

1 Date: 11/17/2017 Subject: Thermostat Adaptor Sequence of Operation Models: TADPT2 TADPT2 Thermostat Adaptor Sequence of Operation Concept The TADPT2 Thermostat adaptor enables you to control Samsung HVAC equipment with a simple 24VAC thermostat. Standard thermostats do not communicate with indoor units (RS485) but use simple relays to turn unitary devices / Due to this, predetermined settings were programmed into TADPT2 to send different signals to Samsung indoor units based on inputs from the 24VAC thermostat. Example When a signal is received for first stage cooling (Y1), dipswitch 2 on bank 1 (fan speed) is set to, dipswitch 2 on bank 3 (set temperature) is set to, TADPT2 will send the following commands to the IDU: POWER = MODE = COOL FAN = AUTO SET TEMPERATURE = 68 F Dip Switch and Dial Settings Bank 1 Bank 2 Bank 3 SW IDU 1 address IDU 2 address TB

2 Before installing thermostat adapter Set indoor unit s address with rotary dials in thermostat adapter that will be controlled (maximum 2) 1) Check the indoor unit s address with SNET Pro2 (if more than one indoor unit is on the system) 2) Adjust the rotary dials and match the indoor unit s address that you want to control 3) Central Control use must be enabled on indoor units being controlled by the thermostat adaptor. Please refer to the indoor unit installation manual for settings. RSW1, RSW2 : Address setting for matching with the first indoor unit to control. RSW3, RSW4 : Address setting for matching with the second indoor unit to control. Notice: Both sets of rotary switches must be set the same if only one indoor unit is being controlled (Figure 3.1) Figure 3.1 : When controlling one indoor unit with Thermostat adaptor. Figure 3.2 : When controlling two indoor units simultaneously with one Thermostat adaptor. TB

3 Dipswitch Settings (mandatory) The first dipswitch should be (up) for normal operation. Turn for firmware updating. Firmware update DIP SW1 in : In case of updating firmware, set this dip switch to. DIP SW1 Firmware update Disable (Default) Enable Set dipswitch depending on SAMSUN AC type (NASA or Non-NASA protocol) [ IMPORTANT ] If you set this SW incorrectly, the unit will not work or respond. Protocol setting to control SAMSUN AC DIP SW4 in : Set according to the SAMSUN communication type. DIP SW4 Type of SAMSUN Air Condi. oners Model numbers AM*********/AA, AC*********/AA DVM S, CAC Model numbers AR*********, AJ*********/AQN36VFUAM RAC, FJM **TADPT2 is not compatible with AR**JSALBWKNCV or AR**JSFLBWKNCV** Dipswitch Settings (optional) Fan speeds and delayed off settings Fan speed setting for terminal DIP SW2 in : Adjust the initial setting (fan speed) according to the following table. DIP SW2 In case of using Input Fan : Auto Fan : High (Default) If user wants to set a different fan speed such as Mid or Low, Connect the wires from the thermostat to 2(MID) or 1(LOW) connector in thermostat adaptor. Delayed Off DIP SW3 and SW4 in : After reaching thermostat set point, the unit will continue to run for a set period of time in order to improve efficiency. The period of time is set by adjusting SW3 and SW4 according to the following table. DIP SW3 DIP SW4 Delayed Off 1 minutes 3 minutes 4 minutes 0 minutes (No delay) TB

4 Dipswitch Settings (optional) Fan speed during Delayed Off (Thermo Off) DIP SW1 and SW2 in : Adjusts the initial setting (fan speed in thermo off for cooling and heating) according to the following table. DIP SW1 Fan speed in cooling thermo Off Set by Thermostat adaptor Low (Default) DIP SW2 Fan speed in heating thermo Off Set by Thermostat adaptor Low (Default) Heating options Two stage heating option when hydronic or Electric heater uses DIP SW3 and SW4 in : Adjusts the initial setting according to the following table DIP SW3 DIP SW4 Stage 1, 2 Heat sources option W1 (Stage 1 heat) energized : SAMSUN AC W2 (Stage 2 heat) energized : SAMSUN AC W1 (Stage 1 heat) energized : SAMSUN AC W2 (Stage 2 heat) energized : Turn on SAMSUN AC with Heat Mode *Note(1) W1 (Stage 1 heat) energized : Turn on SAMSUN AC with Fan Mode W2 (Stage 2 heat) energized : Turn on SAMSUN AC with Heat Mode *Note(1) (Default) (Default) W1 (Stage 1 heat) energized : Turn on SAMSUN AC with Heat Mode (Default) W2 (Stage 2 heat) energized : Turn on SAMSUN AC with Heat Mode (Default) (*Note(1) - Set temperature will be based on SW 3 in ) TB

5 Dipswitch Settings (optional) Set temperature and emergency output settings Set Temperature Setting DIP SW2 and SW3 in : Adjusts the initial Set temperature setting according to the following table. DIP SW2 Set Temperature in cooling Y1 / Y2 : 23.3 C (74 F) / 20.0 C (68 F) Y1 / Y2 : 20.0 C (68 F) / 17.7 C (64 F) DIP SW3 Set Temperature in heating W1 / W2 : 28.3 C (83 F) / 30.0 C (86 F) W1 / W2 : 26.1 C (79 F) / 28.3 C (83 F) Emergency Output DIP SW1 in : Adjust the initial setting (+/- 24 VAC output) according to the following table. DIP SW3 output No output during error occurs output will be activate & system operates with fan mode when error occurs during system operate with heating mode (W1/W2) Basic dip switch setting (example) On Off Fan Speed : High (with input) No delayed off Fan speed low during thermo-off Two stage heating with Samsung AC Cooling set temperature Y1 : 68 F / Y2: 64 F Heating set temperature W1 : 79 F / W2: 83 F NASA protocol TB

6 Wire terminals Y1 Y2 W1 W R C TR TC Dry Dry RX+ RX- No Connector 1 Y Y2 W1 W R C TR TC Dry Contact RS485 Stage 1 cooling input Stage 2 cooling input Stage 1 heating input Stage 2 heating input Description Low Fan input when thermostat has multiple Fan input. Mid Fan input when thermostat has multiple Fan input. High Fan input when thermostat has multiple Fan input. Fan 24VAC output 24VAC (out) to Thermostat Common (out) to Thermostat 24VAC (In) from Transformer Common (In) from Transformer Turn unit / with dry contact Communication port to control indoor unit Connect wires RX+ to F1, RX- to F2 in indoor unit s terminal Basic wiring: 1 stage cooling, 1 stage heating, fan Heat Stage 1 Cool Stage 1 The thermostat adapter must be connected to F1/F2 terminals. **Do not connect to F3/F4** Y1 Y2 W1 W W2 W1 Y2 Y1 Thermostat Terminals C R F2 F1 Indoor Fan + - R C TR TC Dry Dry RX+ RX- Field Provided 24VAC Transformer TB

7 Basic wiring: 2 stage cooling, 2 stage heating, fan Heat Stage 2 Heat Stage 1 Cool Stage 2 Cool Stage 1 The thermostat adapter must be connected to F1/F2 terminals. **Do not connect to F3/F4** Y1 Y2 W1 W W2 W1 Y2 Y1 Thermostat Terminals C R F2 F1 Indoor Fan + - R C TR TC Dry Dry RX+ RX- Basic wiring: 2 stage cooling and heating with dedicated fan speed Indoor Fan High Indoor Fan Mid Indoor Fan Low Heat Stage 2 Heat Stage 1 Cool Stage 2 Cool Stage 1 Field Provided 24VAC Transformer The thermostat adapter must be connected to F1/F2 terminals. **Do not connect to F3/F4** Y1 Y2 W1 W W2 W1 Y2 Y1 Thermostat Terminals C R F2 F1 + - R C TR TC Dry Dry RX+ RX- Field Provided 24VAC TB Transformer 7

8 1. Cooling Operation Start/Stand By Start/Stand By Cooling with Thermostat No Cooling with Thermostat No Room vs Set temp is small gap. Room temp > Set temp Yes Y1 and Activate in TS Y1/Y2/ Room temp > Set temp Yes Y1,Y2 and Activate in TS Room vs Set temp is wide gap. Y1, Energized In Y1,Y2 Energized In Cooling Set temp 68 F, Fan High RS485 Signal Cooling Set temp 64 F, Fan High End End *Y1 and Y2 activation determined by thermostat settings Fan Speed: High (with input) No delayed off Fan speed low during thermo-off Two stage heating with Samsung AC Cooling set temperature Y1: 68 F / Y2: 64 F Heating set temperature W1: 79 F / W2: 83 F Note: Regardless of the thermostat set temperature, the indoor unit will not have a lower set temp than what is specified with the dip switch settings. Temperature sensed from the indoor unit return air sensor may be different than what the thermostat is sensing and displayed. TB

9 2. Heating Operation Start/Stand By Start/Stand By Cooling with TS No Cooling with TS No Room vs Set temp. is small gap. Room temp < Set temp Yes W1 and Activate in TS W1/W2/ Room temp > Set temp Yes W1,W2 and Activate in TS Room vs Set temp. is wide gap. W1, Energized In W1,W2 Energized In Heating Set temp 79 F, Fan High RS485 Signal Heating Set temp 83 F, Fan High End End *W1 and W2 activation determined by thermostat settings Fan Speed: High (with input) No delayed off Fan speed low during thermo-off Two stage heating with Samsung AC Cooling set temperature Y1: 68 F / Y2: 64 F Heating set temperature W1: 79 F / W2: 83 F Note: Regardless of the thermostat set temperature, the indoor unit will not have a lower set temp than what is specified with the dip switch settings. Temperature sensed from the indoor unit return air sensor may be different than what the thermostat is sensing and displayed. TB