Heating Green HG-122 Installation Manual
Contents
1. 77 F 3 77 F Minimum temperature change over time 5 90 minutes Off to 4 minutes 1 F 41 F to 122 F or Heat Off Cool Off 10 F to 140 F Blue EL Electro Luminescent Time to start vs temperature differential Modbus FCC Part 15 Pending C tick 5 years heating Wgr en 06 1002 0422102. buttons ADVANCED INSTALLER SETTINGS MENU Programmable Mode Sw6 ON Non programmable Mode Sw6 OFF LC 00 All buttons are unlocked LC 01 All buttons are locked except A v buttons LC 02 All buttons are locked LC 00 All buttons are unlocked LC 02 All buttons locked except A v buttons LC 03 PROG button is locked LC 04 All buttons are locked ADVANCED INSTALLER SETTINGS MENU Symbol Default a ee Heating Setpoint Limit Adjustable from 41 F 120 F CL Minimum Cooling aon Limit Adjustable from 43 F 122 CF F Fahrenheit CF C Celsius C1 Internal Sensor Calibration Adjustable 9 F in 0 2 F increments Time Format TC 12 12 Hour Time TC 24 Military Time TC 00 No time displayed in non programmable mode Temporary Hold Time for Programmable Mode 0 5 12 hours or OFF which holds to next event Advanced Fan Function 0 Fan Function rarm fan FO 0 No advanced fan function sacar ial FO 2 Constant fan during occupied mode 2 schedules per day constant fan in Day and auto fan in Night Fan must be set to ON for this function to work Fan Purge Adjustable from 0 5 minutes after any call ae oe FN Manual Changeover FN A Auto Changeover FN C Cooling Only FN H Heating Only TT OFF No Remote Sensor TT OA Outdoor Sensor TT RS Remote Indoor Sensor TT AU Indoor Remote Sensor Averaging with Internal Sensor Adaptive Recovery Progra
3. of the sensor Measure at the end of the wires that will connect to the thermostat Confirm the resistance value within 5 to the temperature where the sensor is mounted Disconnect power to the thermostat when wiring the sensor to the T and T terminals Strip only as much insulation off of the wires as necessary to provide a good contact with the terminals The sensor is not polarity specific so either sensor lead may be connected to either terminal on the thermostat OUTDOOR SENSOR INSTALLATION Mount the sensor on a vertical exterior surface below an overhang Choose a location protected from direct sunlight and exposure to excessive moisture Follow the same wiring and test procedures as installing an indoor sensor SENSOR CALIBRATION CHART Temperature Resistance Temperature Resistance F kO F kO 16 SPECIFICATIONS Input Voltage Relay Rating Operating Temperature Operating Relative Humidity Storage Temperature Size LCD Display Size Temperature Sensor Voltage Resistance Tolerance Stage Delays Timed Upstage Delay Short cycle Delay Display Resolution Control Range Outdoor Air Temperature Range Back Light Optimized Start Stop Method Communications Protocol Approvals Warranty 17 24 VAC 50 60 Hz 24 VAC 1Amp maximum per relay 32 F to 122 F 0 95 non condensing 32 F to 105 F 4 7116 W x 4 1 16 H x 7 8 D 2 3 4 W x 1 7 8 H 10K NTC type 3 20 30 VAC 10kO
4. the LCD will briefly show all available LCD icons software version then display the time and operating mode etc Program hold active Program Mon Tue Wed Thu Fri Sat Sun Day Current Start Stop program DayNight F PM Mode SET System Cooling Set or room mode E Heating temperature Fan Outside Air status TIMER O m m Outside air Auto Fan On temperature Modbus Override timer Keyboard inal activated communications or control oa active limit Commissioning is locked mode TESTING The HG 122 incorporates a number of time delays which can be disabled during testing by setting CD 1 in the Advanced Installer menu After exiting the menu a wrench icon will flash on the LCD This is to remind you that once testing is completed the time delays need to be re initiated by setting CD 0 in the Advanced Installer menu TESTING FAN OPERATION Pres the MODE button until the word OFF is displayed on the LCD Press the FAN button and the word Fan On will appear After a brief moment the internal fan relay will energize and the fan icon will appear and rotate TESTING CONVENTIONAL HEATING AND COOLING OPERATION Press the MODE button until Mode Heat appears on the LCD Use the a button and raise the setpoint a few degrees above the space temperature The heating relay will energize and the word Heat will change to Heating If the thermostat has been configured for multi stage operation raise the setpoint further and t
5. G 122 contains a simple factory Test Mode that can confirm relay outputs slide switch configuration along with a factory default reset TS 0 Factory Test Mode is OFF TS 1 Displays system configuration code based on slide switch settings for factory use only TS 2 Cycles each relay on and off in an endless loop Equipment should be disabled when performing this test TS 3 Resets software to factory defaults Press Fan button to initiate ADAPTIVE RECOVERY Adaptive Recovery is only available in programmable mode Sw6 ON and OS 1 The Adaptive Recovery function of the HG 122 permits the user to program a time that a desired set temperature is required The thermostat then calculates the most energy efficient time to bring on the equipment to reach the setpoint at the designated time This calculation involves a complex control algorithm that compares the space temperature deviation from setpoint and rate of recovery history RECO flashes on the LCD when Adaptive Recovery is active BASIC TROUBLESHOOTING No LCD display Thermostat can not be set for auto changeover Temperature display inaccurate Wrench icon flashes on LCD Outdoor temperature does not display Dashes appear on the LCD Heating or Cooling is flashing Lock icon flashes when trying to set a higher heating or lower cooling temperature Thermostat displays wrong temperature The fan continues to run after a heating or cooling ca
6. MP Switch Settings Swi ON Sw2 OFF Sw3 OFF Sw4 Reversing Valve Sw5 ON Sw6 User Preference Sw7 User Preference Sw8 OFF Heat Cool Multi stage Not Applicable Not Applicable Equipment Controls Fan OFF Non Programmable ON Programmable OFF 4 Schedules per Day ON 2 Schedules per Day 4 Minute Short Cycle Protection Heat Pump Single Stage Conventional Heat Pump OFF O ON B Thermostat Controls Fan OFF Non Programmable ON Programmable OFF 4 Schedules per Day ON 2 Schedules per Day 4 Minute Short Cycle Protection IMPORTANT If an outdoor sensor is used and High or Low Balance Point control is required set HB and LB in the Advanced Installer menu 7 TYPICAL SYSTEM WIRING DIAGRAMS 3 HEAT 2 COOL HEAT PUMP Switch Settings Swi ON Sw2 ON Sw3 OFF Sw4 Reversing Valve Sw5 ON Sw7 User Preference Sw8 OFF Heat Pump Multi stage Conventional Heat Pump OFF O ON B OFF Non Programmable ON Programmable OFF 4 Schedules per Day ON 2 Schedules per Day 4 Minute Short Cycle Protection IMPORTANT If an outdoor sensor is used and High or Low Balance Point control is required set HB and LB in the Advanced Installer menu 2 HEAT 1 COOL DUAL FUEL Switch Settings Sw1 ON Sw2 OFF Sw3 ON Sw4 Reversing Valve Sw5 ON S
7. STEM SWITCH FUNCTIONS Swi Equipment Type Switch 1 sets the equipment type For heat cool equipment set the switch to the OFF position factory default For heat pump equipment set the switch to the ON position Sw2 Equipment Stages Switch 2 sets the equipment stages For single stage equipment set the switch to the OFF position factory default For multi stage equipment set the switch to the ON position Sw3 Heat Pump Type Switch 3 is used to select conventional heat pump or dual fuel operation For conventional heat pump set the switch to the OFF position factory default For dual fuel operation set the switch to the ON position Sw4 Reversing Valve Switch 4 is used to select the heat pump reversing valve For O reversing valve energize in cooling set the switch to the OFF position factory default For B reversing valve energize in heating set the switch to the ON position Sw5 Fan Switch 5 is used to configure the fan operation For gas systems set the switch to OFF factory default For heat pump and electric systems set the switch to ON position Sw6 Thermostat Mode Switch 6 is used to set the thermostat mode For non programmable set the switch to the OFF position factory default For programmable set the switch to the ON position Sw7 Schedules OFF 4 schedules per day factory default ON 2 schedules per day Sw8 Compressor Delay OFF 4 minute short cycle protectio
8. ed Installer Settings HB OFF is the factory default high balance point setting and LB OFF is the factory default low balance point setting High balance point is adjustable from OFF to 32 F 122 F and low balance point is adjustable from OFF to 14 F 77 F When the outdoor temperature rises above the high balance point setting only first stage heat pump will be allowed to energize When the outdoor temperature falls below the low balance point setting only the auxiliary heat will be energized and the heat pump will be locked out Typical settings might be 30 F Low Balance Point and 55 F High Balance Point High and low balance point control can also be used in conventional heat pump applications The high balance point must be greater than the low balance point and there should be at least a 5 F spread between the two ACTIVATING THE BATTERY The HG 122 contains a 3 volt Lithium cell battery that maintains the time of day in the event of a power failure To activate the battery carefully remove the white tab Figure 4 0 REMOVE TAB FIGURE 4 SETTING THE SYSTEM SWITCHES The HG 122 contains a set of eight system switches located on the thermostat printed circuit board The switches are used to match the thermostat with the specific type of HVAC system and user preferences Refer to the system switch functions to properly configure the thermostat Figure 5 ON BEREEEEE FIGURE 5 SY
9. follows 1 Read and understand this Installation Manual and Operation Manual 2 Mount the HG 122 3 Set the 8 system switches to match the equipment application 4 Wire the optional remote temperature sensor s or devices 5 Power the thermostat 6 Set the Advanced Installer Setup options 7 Program and setup the HG 122 thermostat Refer to the Operation Manual for instructions 8 Test heating cooling and other functions INSTALLING THE THERMOSTAT DISASSEMBLY Insert a small coin dime in the release slot located on the bottom of the thermostat Gently twist the coin to release the thermostat from the subbase Avoid twisting the case as this may stress the LCD or bend the terminal connector pins Figure 1 THERMOSTAT LOCATION The HG 122 should be installed in a location that represents the ambient space temperature Do not install the thermostat in an area where drafts are present near the floor behind doors or on an external wall Avoid placing the thermostat in areas where the air movement is limited affected by direct sunlight or other areas not typical of the temperature in the space MOUNTING THE SUBBASE When mounting the HG 122 be aware that drafts may travel down wall cavities and enter the back of the thermostat through the control wire hole in the wall It is important to seal the hole to prevent any drafts that might affect the internal temperature FIGURE 1 INSTALLING THE THERMOSTAT Pull the cont
10. he second stage heating relay will energize A period will be displayed after the word Mode 13 TESTING Press the MODE button until Mode Cool appears on the LCD Use the v button and lower the setpoint a few degrees below the space temperature The cooling and fan relays will energize and the word Cool will change to Cooling If the thermostat has been configured for multi stage operation lower the setpoint further and the second stage cooling relay will energize A period will be displayed after the word Mode TESTING HEAT PUMP OPERATION When the HG 122 is configured for heat pump operation testing is the same as for a conventional heating and cooling system with the exception that the fan relay is energized on a call for both heating and cooling Emergency Heat mode is only active when the thermostat MODE button is set to emergency heat E Heat will be displayed on the LCD When the W2 relay is energized E Heating will be displayed on the LCD When the thermostat is in the heat pump mode the reversing valve is energized with a cooling call O or heating call B it will remain energized until there is an opposite call If after 30 minutes there is no call the reversing valve will de energize RESETTING THE TIME DELAYS After testing the thermostat change CD 1 to CD 0 in the Advanced Installer menu This will be confirmed when the flashing wrench icon no longer appears on the LCD FACTORY TEST MODE The H
11. ld normally be displayed Figure 6 FIGURE 6 11 T 32 S1 SENSOR TT TERMINAL FUNCTIONS INDOOR SENSOR WIRING When the HG 122 S1 is used as an indoor HEC a sensor the HG 122 can be configured to allow only the remote sensor to control the temperature TT RS or both the remote and onboard sensor can be used for temperature averaging TT AV An optional in line switch can also be used with the remote sensor to change the temperature sensing location from remote to onboard sensor The Advanced Installer menu setting must be TT RS to use this feature Figure 7 EERE HEA HG 122 S2 SENSOR HG 122 S2 SENSOR FIGURE 8 zc A i cal HG 122 S1 SENSOR po b OPTIONAL SWITCH FIGURE 7 USING MULTIPLE SENSORS FOR TEMPERATURE AVERAGING Multiple sensors can be connected to the T and T terminals if temperature averaging is required with or without the sensor in the thermostat The total value of remote sensors wired in series parallel must equal 10kO 77 F The onboard sensor is not part of the equation Figure 8 shows 2 HG 122 S2 sensors used for averaging 12 TESTING Testing ensures that the thermostat and the HVAC equipment operate properly Follow the detailed testing steps and refer to the Troubleshooting Guide in this manual if any problems are encountered When the HG 122 is powered
12. ll is satisfied Some buttons on the thermostat do not function Thermostat clock does not keep proper time Remove thermostat from subbase and check for 24 Volts across 24 and 24C Make sure the factory jumper is between R and 24 If no voltage check voltage at HVAC system terminals R and C If no voltage fault is equipment related If voltage fault could be in wiring In the Advanced Installer menu set FN A for auto changeover FN C is for cooling only FN H is for heating only FN is for manual heat cool changeover Air from the wall cavity may be leaking into the rear of the thermostat Seal holes in the wall to prevent air infiltration The temperature sensor might be folded back inside the thermostat and is not being exposed to the room temperature Carefully move the sensor head so that it is just behind the sensor opening in the case External influence from appliances lighting or drafts may be affecting temperature accuracy Move lamps or other sources of abnormal temperature influence away from the thermostat This is not a fault Commissioning mode is enabled and time delays are overridden Change CD 1 to CD 0 in the Advanced Installer menu Check wiring to outdoor sensor Make sure that TT OA in the Advanced Installer menu This is not a fault The thermostat is in the short cycle protection mode This prevents the equipment from running for 4 minutes after the therm
13. mmable Mode OS 0 OFF OS 1 ON High Balance Point Adjustable from OFF to 32 F 122 F Low Balance Point Adjustable from OFF to 14 F 77 F Modbus Address Adjustable from 1 99 ADVANCED INSTALLER SETTINGS MENU CD 0 OFF CD 1 All internal time delays are overridden This function must be reset to CD 0 to prevent equipment from short cycling TS 0 Test Mode OFF Do not change this function without reading the Factory Test Mode instructions on Page 27 TT TERMINAL FUNCTIONS The T and T terminals on the HG 122 are used for wiring either an indoor or an outdoor remote sensor Each configuration requires setup in the Advanced Installer menu REMOTE SENSORS There are two type of remote sensors The HG 122 S1 is a single sensor that can be used indoors or outdoors The HG 122 S2 contains two sensors A combination of both sensors can be used for indoor temperature averaging to simplify wiring OUTDOOR SENSOR WIRING DE og When the HG 122 S1 is used as an outdoor w1 sensor the HG 122 will display the a E e outside air temperature In the Advanced a T T Installer menu TT OA The outdoor sensor can also be used for high and low balance point control in dual fuel systems and conventional heat pumps Use separate 18 2 thermostat cable when wiring the sensor to the thermostat If the outdoor sensor fails or is not wired properly two dashes will appear on the LCD where the outside temperature wou
14. n factory default ON Disabled FACTORY DEFAULT SETTINGS OFF OFF OFF OFF 6 Thermostat Mode 7 Schedules 4 Schedules per Day 4 Schedules per Day 8 Compressor Delay 4 Minute Short Cycle Protection Enabled TYPICAL SYSTEM WIRING DIAGRAMS HEAT OR COOL ONLY Switch Settings Swi OFF Sw2 OFF Sw3 OFF Sw4 OFF Sw5 Equipment Type Sw6 User Preference Sw7 User Preference Sw8 Application Type In Advanced Installer Menu Set FN H for Heat Only or FN C for Cool Only 1 HEAT 1 COOL Heat Cool Single Stage Not Applicable Not Applicable OFF Equipment Controls Fan Gas ON Thermostat Control Fan Electric ON Programmable OFF 4 Schedules per Day ON 2 Schedules per Day OFF Cooling Only ON Heating Only OFF Non Programmable Switch Settings Sw1 OFF Sw2 OFF Sw3 OFF Sw4 OFF Sw5 OFF Sw6 User Preference Sw7 User Preference Sw8 OFF Heat Cool Single Stage Not Applicable Not Applicable Equipment Controls Fan OFF Non Programmable ON Programmable OFF 4 Schedules per Day ON 2 Schedules per Day 4 Minute Short Cycle Protection TYPICAL SYSTEM WIRING DIAGRAMS 2 HEAT 2 COOL Switch Settings Swi OFF Sw2 ON Sw3 OFF Sw4 OFF Sw5 OFF Sw6 User Preference Sw7 User Preference Sw8 OFF 2 HEAT 1 COOL HEAT PU
15. ostat calls This is not a fault HL and CL restrict the heating and cooling setpoints The limit values can be changed in the Advanced Installer menu The HG 122 can display in either Fahrenheit or Celsius Change CF C or F in the Advanced Installer menu The thermostat is set to Fan On Set thermostat to Auto Fan The fan purge mode is set to run the fan for a fixed period of time after the equipment shuts off Change the FP value in the Advanced Installer menu Lock values have been set Refer to LC settings in the Advanced Installer menu Make sure that the plastic tab on the internal fitted battery is removed so that the battery is operational REMOTE SENSOR INSTALLATION INSTRUCTIONS The HG 122 can use an indoor remote sensor or multiple sensors for temperature averaging or as an outdoor sensor for temperature display or a control function depending upon the thermostat configuration INDOOR SENSOR INSTALLATION Locate the sensor in the same manner as a thermostat Mount the sensor 18 away from any outside wall Do not install the sensor behind doors in corners or other dead air spaces Keep the sensor away from direct air flow supply registers or near sources of heat such as lamps and appliances The maximum wire length from the sensor to the thermostat is 300 feet Use a separate 18 2 thermostat cable for sensor wiring Prior to wiring the sensor to the thermostat use an ohm meter or multimeter to measure the resistance
16. rol wires through the large opening in the thermostat subbase Next level and mount the subbase on the wall using the supplied anchors and screws Do not over tighten the mounting screws as the subbase may warp causing the improper seating of the thermostat connecting pins to MOUNTING the terminal blocks HOLES SS Use a properly sized screwdriver and land each 0 B wire to its dedicated terminal Do not over tighten the terminal screws Check to ensure that all wires are landed correctly and dressed properly to prevent any shorts refer to the Typical System Wiring Diagrams in the manual Figure 2 FIGURE 2 Refer to Typical System Wiring Diagrams in this manual TERMINAL DESIGNATIONS Based on the HG 122 slide switch configurations some terminals have multiple output functions Figure 3 FACTORY JUMPER wi SN power Coms Aux W2 Y2 OIBY1G R 24 240B AT T RR eee FIGURE 3 TERMINAL G A T Auxiliary Input Terminal T Auxiliary Input Terminal TERMINAL e R a a a CO oTo i SPECIAL INSTRUCTIONS FOR DUAL FUEL APPLICATIONS When the HG 122 is used with dual fuel systems an outdoor sensor is recommended for balance point control Model HG 122 S1 The sensor is wired to the TT terminals on the thermostat In the Advanced Installer Settings set TT OA This configures the thermostat to receive the outdoor temperature information High and low balance point settings are set in the Advanc
17. w6 User Preference Sw7 User Preference Sw8 OFF Heat Pump Single Stage Dual Fuel ie ai B OFF Non Programmable ON Programmable OFF 4 Schedules per Day ON 2 Schedules per Day ON ema Controls Fan 4 Minute Short Cycle Protection IMPORTANT An outdoor sensor is used for High or Low Balance Point Set HB and LB in the Advanced Installer menu TYPICAL SYSTEM WIRING DIAGRAMS 3 HEAT 2 COOL DUAL FUEL Switch Settings Swi ON Sw2 ON Sw3 ON Sw4 Reversing Valve Sw5 ON Sw6 User Preference Sw7 User Preference Sw8 OFF IMPORTANT If an outdoor sensor is used and High or Low Balance Point control is required set HB and LB in the Advanced Installer menu ENTERING THE ADVANCED INSTALLER SETTINGS MENU The HG 122 contains factory defaults for all Advanced Installer Settings Depending upon the user and equipment application To enter the Advanced Installer Settings menu push the O RIDE button once then hold it down 15 seconds until the LCD displays LC which is the first menu item You can move forward or backwards Heat Pump Multi stage Dual Fuel OFF O ON B Thermostat Controls Fan OFF Non Programmable ON Programmable OFF 4 Schedules per Day ON 2 Schedules per Day 4 Minute Short Cycle Protection some settings may need to be changed through the menu by pressing the O RIDE or PROG
18. whratirs Installation Manual Comfort System HG 122 Universal Thermostat Version 3 0 INTRODUCTION This manual should not be left with the owner as it contains installer setup functions which if not correctly set may cause damage to the HVAC equipment or seriously affect performance The HG 122 thermostat is intuitive reliable and easy to install Using a common sense approach to the installation will ensure this product is installed properly and to the customer s satisfaction Please take time to read and understand this manual so that installation and testing is performed in an efficient manner This manual is to be used in conjunction with the supplied User Manual Although great care has been taken in the preparation of this manual Heating Green takes no responsibility for errors or omissions contained herein It is the responsibility of the installer to ensure that this thermostat and the equipment connected to it operate in a safe and efficient manner Due to ongoing product improvements Heating Green reserves the right to change the specifications of the HG 122 thermostat or its components without notice All rights reserved Heating Green 2010 Intellectual rights apply GETTING STARTED As with any HVAC project careful installation is the key to a successful outcome Time taken during the installation process will be rewarded with fewer call backs The steps required to install the HG 122 thermostat are as
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