Friedrich Thermostat WRT1 User's Manual
Contents
1. ON configures 45 0 F 90 0 F the thermostat for heat pump systems You can adjust the 0 for cooling room temperature changeover valve display to rea 4 F to 4 F above or below the factory calibrated reading b for heating OFF configures changeover valve the thermostat for non heat pump systems 45 0 F 90 0 F NA The cooling swin The heating Ha setting is adjustable setting is adjustable from 0 2 F to from 0 2 F to 2 F For Example 2 F For Example A swing setting of A swing setting of 0 5 F will turn the 0 5 F will turn the cooling on at heating on at approximatel approximately 0 5 F 0 5 F above the i the setpoint setpoint and turn and turn the heat the cooling off at off at approximately approximatel 0 5 F above the 0 5 F below the setpoint setpoint Factory Default Settings 0 F 0 OFF 90 F NA 0 8 F 0 8 F Select OFF on HU configuration for Friedrich models with the following suffix A B C D or E The second stage will turn on at 2x the swing setting The second stage will turn off when 1x the swing is reached For example if the swing setting is 0 8 for heating and the thermostat is set at 70 F the first stage will turn on at approximately 69 2 F The second stage will turn on at 68 4 F The second stage will turn off at 69 2 F and the first will turn off at 70 8 F ESTABLISHING COMMUNICATION Establishing Communication between WRT1 and the Base Module2. Temperature Temperature Calibration Heat Pump Setpoint Limit This feature allows Select O for a When turned on This feature allows the installer to changeover valve the thermostat will you to set a change the that energizesin operate a heat maximum heat calibration of the cooling Seletb pump setpoint value The room temperature for a change over setpoint display For valve that Y will be first temperature cannot example if the energizes in aoe of heat amp be raised above this thermostat reads heating cool W will be value 70 and you would second stage heat like it to read 72 then select 2 LCD Will Show Adjustment Options Setpoint Limit This feature allows This step is used to The wine o The sm O you to set a for Vert l Pak configurations Coolin E Link Cooling Swing SYSTEM COOL Heating Swing Establish SYSTEM HEAT i connect WRT1 to often called cycle often called cycle minimum cool Base Module Refer rate differential rate differential setpoint value The to page 12 for or anticipation is or anticipation is sefpoint connection adjustable A adjustable A smaller temperature cannot instructions smaller swing swing setting will be lowered below setting will cause cause more aut this value more frequent cycles and a larger cycles and a larger swing setting vil swing setting will cause fewer cycles cause fewer cycles
3. buttons to select the desired room temperature A Note About Two Speed Fan When the fan switch is set to AUTO and the system is in HEAT or COOL the thermostat will switch from LOW fan to HIGH fan when the ambient temperature is 2x swing away from setpoint The thermostat will switch back to LOW fan at 1x swing away from setpoint INSTALLATION TIPS Wall locations The thermostat should be installed approximately 4 to 5 feet above the floor Select an area with average temperature and good air circulation Do not install thermostat in locations e Close to hot or cold air ducts e That are in direct sunlight e With an outside wall behind the thermostat e In areas that do not require conditioning e Where there are dead spots or drafts in corners or behind doors e Where there might be concealed chimneys or pipes Friedrich Tip Pick an installation location that is easy for the user to access The temperature of the location should be representative of the building BASE MODULE TIPS Base Module PTAC Installation Wireless Range Range between the WRT1 and the base module is up to 100 feet with no obstructions and up to 50 feet through standard building materials To optimize the range try placing the base module higher if in a basement or further away from large metal objects The base module is designed to be mounted behind the front grille of your Friedrich packaged terminal air conditioner PTA
4. BREE ER EE ESE EPS BHR Battery Installation Battery installation is optional if thermostat is hardwired e R amp C terminal connected to 24 VAC Class II power cael WIR 2A Insert 2 AA Alkaline batteries included SPECIFICATIONS amp CONTACT INFORMATION Specifications WRT1 Thermostat The display range of temperature 41 F to 95 F 5 C to 35 C The control range of temperature 44 F to 90 F 7 C to 32 C OGGAHNG Seeseeerectecosseuescasesese eoce 1 amp per terminal 1 5 amp maximum all terminals combined Display accuracy acencesacecnacceqseareaeesas 1 F 17 2 C Swing cycle rate or differential Heating is adjustable from 0 2 F to 2 0 F 17 67 C to 16 67 C Cooling is adjustable from 0 2 F to 2 0 F 17 67 C to 16 67 C Power SOUICE accent ence teens 18 to 30 VAC NEC Class II 50 60 Hz for hardwire common wire Battery power from 2 AA Alkaline batteries Operating ambient 32 F to 105 F 0 to 41 C Operating humidity 90 non condensing maximum Dimensions of thermostat 4 7 W x 4 4 H x 1 1 D Radio transmission frequency 916 MHz Base Module Load rating estcecaeteeenceeciececeeeneee 1 amp per terminal 1 5 amp maximum all terminals combined Power SOUICe 18 to 30 VAC NEC Class II
5. V4 FRIEDRICH Model WRT1 Installation and Operation Instructions This manual covers the following models e WRT1 PTAC Wireless Remote Thermostat Base Module Power Type Description Battery Power Gas or Oil Heat Hardwire Common Wire Electric Furnace Heat Pump No Aux or Emergency Heat Hardwire Common Wire with Battery Backup Heat Pump with Electric Aux Heat Pump with Gas Aux Multi stage Systems Heat Only Systems Heat Only Systems Floor or Wall Furnaces Cool Only Systems High and Low Fan Speed Millivolt Emergency Heat Conventional Single Stage Furnace Geothermal A trained experienced technician must install this product Carefully read these instructions You could damage this product or cause a hazardous condition if you fail to follow these instructions Table of Contents Need Help Thermostat Quick Reference 2 Thermostat Operation 3 For assistance with this product please Installation Tips 4 call Friedrich Technical Assistance Center 5 at 877 599 5665 ext 261 between the 6 Base Module Tips hours of 8 00 AM 5 00 PM CST Thermostat Sub base Installation Base Module Sub base Installation T Wiring 8 9 Technician Setup 10 Technician Setup Menu 11 Establishing Communication 12 Mount Thermostat amp Battery Installation 13 Specification amp Contact Information 14 THERMOSTAT QUICK REFERENCE Getting to know your thermostat 4 LcD Low Battery In
6. 50 60 Hz Operating ambient _ 32 F to 150 F 0 to 65 C Operating humidity 90 non condensing maximum Contact Us f FRIEDRICH Friedrich Air Conditioning Co 10001 Reunion Place STE 500 San Antonio Texas 78216 Toll free 1 800 541 6645 Website www friedrich com Hours of Operation Monday Friday 8 AM 5 PM CT 94993001_00 B
7. compressor from short t cycling This feature will not allow the 1 SelectForC 1 i compressor to be turned on for 5 minutes with the jumper pin Reset button after it was last turned off I i i Using the jumper on the back of the thermostat selecting ON will not allow the compressor to be turned on for 5 minutes after the last time the N compressor was on Selecting OFF will remove this delay Electric Setup 3 Select delay ON or OFF Select ELEC Electric The thermostat operation with the jumper pin with this switch switch should be put in the ELEC position This setting allows the thermostat to operate the fan when the fan relay is connected to the G terminal Friedrich PTAC units will require ELEC fan relay Technician Setup Menu This thermostat has 3 different setup configurations To setup the thermostat for your particular application 1 Set the thermostat system switch to OFF 2 Press and hold L andL _ together for 3 seconds This 3 second delay is designed so that users do not accidentally access installer settings Tech Setup Options TECHNICIAN SETUP MENU Configure the installer options as desired using the table below Use L _ and to change settings Tap and together to move to the next step NOTE When you want to exit Tech Setup options move the system switch to HEAT or COOL P for PTAC configuration Room Heating Change Over Valve Selection
8. C Refer to the Friedrich PTAC Installation amp Operation Manual for instructions in removing the front grille Check clearance to ensure the fit of front grille after base module installation Ensure if mounting with screws that wires and lines are not damaged See below for a few suggested options to mount the base module Note For Friedrich Single Package Vertical Air Conditioners Vert l Pak install module on the outside of the unit in close proximity to the low voltage terminal board e Front Mount Inside PTAC Housing 2 Side Mount Inside PTAC Housing 3 Wall Mount Outside PTAC Housing Note _ It is recommended to use an adhesive tape instead of screws when mounting the Base Module inside the PTAC housing Friedrich Tip Caution Do not install the base module in locations Electrical Hazard e That are behind a chimney Failure to disconnect the e That require the signal to pass through power before beginning to significant metal or concrete blocks install this product can cause e Where temperature could exceed 150 F electrical shock or equipment e Where rain or snow or extreme hot or cold damage is possible THERMOSTAT SUB BASE INSTALLATION Caution Mercury Notice Electrical Hazard The WRT1 thermostat is Failure to disconnect the mercury free However if the power before beginning to product you are replacing install
9. Easy Two Step Communication Link Blue LED To set up the initial link between the Thermostat andthe Step 1 base module please follow the steps below LED Relay Indicators 1 Press and hold the base module button for 3 seconds The Blue LED will flash when ready to receive initial signal from WRT1 Base module must be powered by 24V Blue LED will be continuously on when 24V power is present 2 Set the thermostat system switch to OFF Press and hold and for 3 seconds Tap and together until LE is displayed Press and hold until LE flashes 3 times the Blue LED on the base module will stop flashing after communication has been established between base module and WRT1 Base Module Button Step 2 Note The Blue LED on the base module will be on when power is present The Blue LED will flash 3 times every time it receives a signal from WRT1 When a relay is onthe corresponding LED relay indicator will be on Note If the base module does not receive a signal from the WRT1 for 15 minutes it will turn off all relays until communication is reestablished The Blue LED on the base module will also turn off to show Communication has been lost MOUNT THERMOSTAT amp BATTERY INSTALLATION Mount Thermostat Align the 4 tabs on the subbase with corresponding slots on the back of the thermostat then push gently until the thermostat snaps in place AIO SYSTEM LENN HISH pou OFF HEAT FRIEDRICH
10. Module to a PTAC refer to the Friedrich PTAC or Vert l PAK Installation and Operation Manual to enable remote thermostat operation WIRING Power supply Jumper not supplied to connect GL and GH terminals The thermostat must be set to O or B to match the changeover valve O is cool changeover valve B is heat changeover valve gt PPD The Aux Heat Relay is energized as the second stage of heat Friedrich PTAC 1H 1C system 2 speed fan Friedrich PTAC 1H 1C system 1 speed fan RIOS eE jix E gt BS HEAT RELAY RELAY i ran row merar cH mep el FAN HIGH RELAY JEN COMPRESSOR eo ema WIS Ne teat acter emee WO TY tanner Note h Friedrich PT AC units with single sped fan op eration a umpr not sufted should b installed Btween G Land B Friedrich PTAC and Vert l PAK Heat Pump system 2 speed fan R I0 St W J tS eer AUX H mohi s RELAY p4 a EST s 1p A VALVE rt e e E ETETE GREER tee oe amp i i ie i TECHNICIAN SETUP wee eT T Fahrenheit Celsius Displa _ Fahrenheit Celsius Display I n Select F or C with the jumper pin on the back of the thermostat Important The RESET button must be pressed after changing any switch or jumper pin setting Batteries must be installed for this operation inte cee ee ee aa ee Compressor Short Cycle Delay 2 The compressor short cycle delay M e protects the
11. dicator Indicates the current Replace batteries when ALTO SYSTEM indicator is shown a 3 room temperature pa j n Hig COOL OFF HEAT System operation indicators ON will display when the COOL or HEAT is on Displays the user selectable setpoint temperature E S E 5 E 2 5 5 E EE EEEE N 1 will appear in the display when the auxiliary heat is active Fan Switch System Switch DOA Setpoint Buttons Important A The low battery indicator is displayed when the AA battery power is low If the user fails to replace the battery within 21 days the thermostat display will only show the low battery indicator as a final warning before the thermostat becomes inoperable Easy to use controls THERMOSTAT OPERATION Caution When the battery icon Pr appears replace your AA batteries immediately Failure to do so may result in your heating amp cooling system becoming inoperable 7 FRIEDRICH o LCD Display See page 2 for details about this display read out Fan Switch AUTO will cycle the fan on only when the heating or cooling system is on Select LOW or HIGH for the fan to run continuously at the selected speed System Switch Selects the operation mode of your HVAC system Selecting HEAT turns on the heat mode Selecting COOL turns on the air conditioning mode Selecting OFF turns both heating and cooling off 4 Temperature Setpoint Buttons Press the or
12. reen wire may not be connected to the G terminal 2 Loosen the terminal block screws Insert wires then retighten terminal block screws Terminal Designations on Base Module WIRING Warning All components of the control system and the thermostat installation must conform to Class Il circuits per the NEC Code Wire specifications Use shielded or non shielded 18 22 gauge thermostat wire This thermostat is shipped from the factory to operate a conventional heating and cooling system This thermostat will also operate a heat pump system See the heat pump configuration step on page 9 of this manual to configure the thermostat for heat pump applications 1 Heat 1 Cool Terminal Conventional System 24 VAC Transformer power Transformer common Energized in heating Energized in cooling Fan relay Low Fan relay High First stage of heat First stage of cool Terminal Designations on Ri 1 Heat 1 Cool eal Conventional System 24 VAC Transformer power Transformer common 1 Heat 1 Cool Heat Pump System 24 VAC Transformer power Transformer common Heat pump changeover valve energized in heating Heat pump changeover valve energized in cooling Fan relay Low Fan relay High Second stage of heat First stage of heat amp cool Master Thermostat 1 Heat 1 Cool Heat Pump System 24 VAC Transformer power Transformer common Connecting to a PTAC When connecting the Base
13. this product can cause contains mercury dispose of it electrical shock or equipment properly Your local waste damage management authority can give you instructions on recycling and proper disposal For vertical mount put one screw top and one screw bottom For horizontal mount put one screw left and one screw right L 1 C Horizontal mount Horizontal mount Prerica mount Friedrich Ti The thermostat can be hardwired to a 24V power supply however it is not required Batter ies should be checked annually if 24V power is not connected BASE MODULE SUB BASE INSTALLATION Wiring Note Note Wire the base module s sub base To connect the base module to the same way you would wire a master thermostat refer to the hardwired thermostat subbase directions on page 11 of this manual For vertical mount put SI vere oai one screw top and one 7 screw bottom K For horizontal mount put one screw left and one screw right L ra Horizontal mount Horizontal mount Prerica mount Note When mounting to a PTAC ensure screws will not damage wires or coils The sub base may be mounted using adhesive tape such as double sided tape or hook and loop strips when drilling is not practical Wiring 1 If you are replacing a thermostat make note of the terminal connections on the thermostat that is being replaced In some cases the wiring connections will not be color coded For example the g
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