Radian Series Inverter/Charger GS7048E GS3548E Operator’s Manual
About OutBack Power Technologies OutBack Power Technologies is a leader in advanced energy conversion technology. OutBack products include true sine wave inverter/chargers, maximum power point tracking charge controllers, and system communication components, as well as circuit breakers, batteries, accessories, and assembled systems.
Table of Contents Introduction ................................................................................................. 5 Audience ................................................................................................................................................................................. 5 Symbols Used ........................................................................................................................................................................
Table of Contents Multiple-Inverter Installations (Stacking) ...............................................................................................................................36 Parallel Stacking (Dual-Stack and Larger) .................................................................................................................................................37 Three-Phase Stacking (Three Inverters) ............................................................................................
Table of Contents List of Tables Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Table 8 Table 9 Table 10 Table 11 Table 12 Table 13 Table 14 Table 15 Table 16 Table 17 Table 18 Summary of Input Modes ............................................................................................................. 21 Charge Currents for Radian Models .......................................................................................... 27 Offset Interaction with AC Source ..........................
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Introduction Audience This manual provides instructions for setup and operation of the product. It does not cover installation. The manual is intended to be used by anyone required to operate the Radian Series Inverter/Charger. Operators must be familiar with all the safety regulations pertaining to operating power equipment of this type as required by local code. Operators are advised to have basic electrical knowledge and a complete understanding of this equipment’s features and functions.
Introduction Welcome to OutBack Power Technologies Thank you for purchasing the OutBack Radian Series Inverter/Charger. It is designed to offer a complete power conversion system between batteries and AC power. As part of an OutBack Grid/Hybrid™ system, it can provide off-grid power, grid backup power, or grid-interactive service which sells excess renewable energy back to the utility.
Introduction Figure 1 Radian Series Inverter/Charger GS7048E 7000 watts (7 kW) continuous power at 48 Vdc 16.3 kVA peak surge capacity Modular internal design allows low idle consumption and high efficiency at high or low power operation GS3548E 3500 watts (3.5 kW) continuous power at 48 Vdc 8.2 kVA peak surge capacity NOTE: This product has a settable AC output range. In this book, many references to the output refer to the entire range.
Introduction Inverter Controls The Radian inverter has no external controls. It can operate normally without an external control or interface. Basic modes and settings are pre-programmed at the factory. (See page 67 for default settings.) However, certain external devices can be used to operate or program the Radian. On/Off Switch The inverter can be equipped with a switch to turn it on and off. This switch is not sold as an inverter accessory; a common toggle switch can be used.
Commissioning Functional Test WARNING: Shock Hazard and Equipment Damage It is necessary to remove the inverter cover to perform these tests. The components are close together and carry hazardous voltages. Use appropriate care to avoid the risk of electric shock or equipment damage. Pre-startup Procedures 1. 2. 3. 4. 5. Ensure all DC and AC overcurrent devices are opened, disconnected, or turned off. Double-check all wiring connections. Confirm that the total load does not exceed the inverter’s wattage.
Commissioning Metal pads are located at these locations. In commissioning, AC voltages can be measured at this series of test points. Figure 3 AC Test Points 4. Using a DVM or voltmeter, verify 230 Vac (or appropriate voltage) between the “L” and “N” OUT terminals. (See Figure 3 for AC test points.) The inverter is working correctly if the AC output reads within 10% of 230 Vac or the programmed output voltage. 5. Proceed past the items below to Step 6 on the next page.
Commissioning 5. Using the system display, temporarily bring each slave out of Silent mode by raising the Power Save Level of the master. (See page 39.) As each slave is activated, it will click and create an audible hum. Confirm that the system display shows no fault messages. Confirm that the output voltages are still correct. Individual slave voltage readings are not necessary since all slave inverters are in parallel. When this test is finished, return the master to its previous settings.
Commissioning Firmware Updates IMPORTANT: All inverters will shut down during firmware updates. If loads need to be run while updating the firmware, bypass the inverter with a maintenance bypass switch. Communication cables must remain connected and DC power must remain on. Interrupted communication will cause the update to fail and the inverter(s) may not work afterward. Inverters automatically update one at a time beginning with Port 1. Each requires about 5 minutes.
Operation Inverter Functionality The inverter is capable of being used for many applications. Some of the inverter’s operations occur automatically. Others are conditional or must be enabled manually before they will operate. Most of the inverter’s individual operations and functions can be programmed using the system display. This allows customization or fine tuning of the inverter’s performance. The Radian inverter has two sets of input connections, which are labeled Grid and Gen.
Operation accept grid power. The opposite is also true. However, if using the Gen Alert or AGS functions, the generator must use the Gen terminals. See page 43 (Gen Alert) and page 47 (AGS).) When multiple inverters are stacked together in parallel, the master inverter’s input mode is imposed on all slaves. The slave settings are not changed; they retain any mode that was previously programmed. However, the slave will ignore its own input mode and use that of the master.
Operation input. The Gen Input AC Limit sets the maximum draw for the Gen input. The Support function takes effect if the AC demand on either input exceeds the AC Limit setting. BENEFITS: Large inverter loads can be powered while staying connected to the AC input, even if the input is limited. The added battery power prevents overload of the input source, but the batteries are not in constant use.
Operation The grid-interactive function is integrally tied with Offset operation and with the battery charger. See pages 35 and 27 for more information on these items. BENEFITS: Excess power is returned to the utility grid. The inverter will offset the loads with excess renewable energy if it is available from the batteries. If the excess energy is greater than the AC demand (the load size), the excess will be sold to the utility grid.
Operation If the inverter stops selling or disconnects due to Grid Interface Protection, the MATE3 will show the reason. Sell Status messages are listed on page 61. Disconnect messages are listed on page 60. Often these messages will be the same. Due to varying requirements in different locations around the world, the grid-interactive settings are adjustable. However, this is only available to operators with installer-level access.
Operation Backup Failure The Backup mode is intended for systems that have utility grid available as the primary AC source. This source will pass through the Radian inverter’s transfer circuit and will power the loads unless utility power is lost. If utility grid power is lost, then the Radian inverter will supply energy to the loads from the battery bank. When the utility power returns, it will be used to power the loads again.
Operation Mini Grid mode is also incompatible with the Grid Use Time and Load Grid Transfer functions of the MATE3 system display. These functions do not have similar priorities to Mini Grid or HBX, but they do control the inverter’s connection and disconnection with the grid. Mini Grid should not be used with these functions. When deciding whether to use Mini Grid mode or HBX, the user should consider the aspects of each.
Operation NOTES: IMPORTANT: Setting DoD Volts too low will severely discharge the batteries. The battery bank may not have sufficient reserve to provide backup in the event of a grid failure. To prevent the loss of power, load use and the DoD Volts setting should be planned accordingly. If the renewable energy source is not greater than the size of the inverter loads, this mode will not work well over time. The renewable source must be capable of charging the batteries as well as running the loads.
Operation Table 1 Mode Summary Benefits Cautions Intended Charger Can use AC that may be Will pass irregular or unusable in other modes Can charge even with a poor generator or low-quality AC source low-quality power to the output; could damage sensitive loads Offset unavailable Source: Generator Loads: Nonsensitive devices Performs three-stage charge and goes silent as specified by settings.
Operation Description of Inverter Operations The items in this section are operations common to all Radian inverters. These are used in most or all of the input modes described in the preceding section. Some of the items in this section are functions which can be manually selected, enabled, or customized. Other items are general topics or applications for the inverter. These items may not have their own menus, but their activity can still be influenced or optimized by changing certain settings.
Operation Low Battery Cut-In: The recovery point from Low Battery Cut-Out. When the DC voltage rises above this point for 10 minutes, the error will clear and the inverter will resume functioning. This item is adjustable. Connecting an AC source for the Radian to charge the batteries will also clear a low battery error. Output Voltage: The AC output voltage can be adjusted.
Operation NOTE: Due to load characteristics, these increments are only approximate and may not function exactly as listed. The pulse duration and the delay both have a time period that is measured in AC cycles. These two items and the load detection threshold are adjustable. Search mode may not be useful in larger systems with loads that require continuous power (e.g., clocks, answering machines, fax machines). Search mode may cause nuisance shutdowns, or it may sleep so rarely that there is no benefit.
Operation The AC input current is used to power both loads and battery charging. The combined amount should not exceed the size of the AC overcurrent device or AC source. These devices should be sized appropriately during planning and installation of the inverter system. If multiple parallel inverters are installed with an AC source of limited amperage, the total combined amperage settings for all units must be less than the AC input circuit.
Operation functions, all of which are operated by the MATE3 system display. (See page 47.) Another example is the MATE3’s AC INPUT hot key menu, which can order all inverters to disconnect when set to Drop. Generator Input A generator should be sized to provide enough power for all inverters, both for loads and for battery charging. The generator’s voltage and frequency must match the inverter’s acceptance settings.
Operation Battery Charging IMPORTANT: Battery charger settings need to be correct for a given battery type. Always follow battery manufacturer recommendations. Making incorrect settings, or leaving them at factory default settings, may cause the batteries to be undercharged or overcharged. Charge Current Batteries or battery banks usually have a recommended limit on the maximum current used for charging. Often this is calculated as a percentage or fraction of the battery capacity, represented by “C”.
Operation charging to a new voltage setting. A square indicates that the inverter has reached the setting (a horizontal dotted line). A triangle indicates that the inverter has stopped charging and is no longer using the previous set point. (The charging may have stopped for any of several reasons.) The battery voltage must drop to one of several low set points before the inverter resumes charging.
Operation Charging Steps The following items describe the operation and intended use for each individual charging step as shown in the graphs. Note that some charging cycles may not follow this exact sequence. These include cycles which were previously interrupted, and also customized charging. Each step describes how to defeat or customize the step if specialized charging is required. See page 31 for a description of multiple cycles when the charger is restarted after completion.
Operation period whenever the battery voltage decreases below this setting. (See page 31 for more information on how the timer works.) To skip this step: Setting Absorb Time to a very short duration will cause the charger to spend minimal time in Absorption once the Bulk stage is complete. Setting Absorb Time to zero will cause the charger to skip both the Bulk and Absorption stages and proceed directly to Float. This may not be desired if the intent is to skip Absorption but retain the Bulk stage.
Operation above that level. Often the timer will expire before the bulk and absorption stages are complete. If this happens, the charger will not enter Float but will go directly to Silent. The charger only spends time in Float stage if the timer is still running. Time limit: Float Time setting. The charger will go Silent once the timer has expired (if another stage is not still in progress.) The Float timer is reset to its maximum amount whenever the batteries decrease to the Re-Float Voltage setting.
Operation Cycle 1 Voltage AC Loss Absorption (c.v.) Absorption Set Point Float Set Point Cycle 4 Cycle 3 AC Loss AC Loss Absorption (c.v.) Float (c.c.) Float Timer (c.v.) Re-Float Set Point Re-Bulk Set Point Cycle 2 Silent Float (c.c.) Absorption (c.v.) Bulk (c.c.) Bulk (c.c.) Silent Float Timer (c.v.
Operation Equalization Equalization is a controlled overcharge that is part of regular battery maintenance. Equalization brings the batteries to a much higher voltage than usual and maintains this high voltage for a period of time. This has the result of removing inert compounds from the battery plates, and reducing stratification in the electrolyte. Equalization follows the same pattern as standard three-stage charging, as shown in the figures on page 28.
Operation If installed in a multiple-inverter system, only a single RTS is necessary. It must be plugged into the master inverter and will automatically control the charging of all slaves and all charge controllers. When charging, an inverter system with an RTS will increase or decrease the charge voltage by 5 mV per degree Celsius per battery cell. This setting affects the Absorption, Float, and Equalization set points. The Sell Voltage and Re-Float Voltage set points are not temperature compensated.
Operation Offset This operation is designed to use excess battery energy to power the loads when an AC source is present. This allows the system to take advantage of renewable energy sources, in effect “offsetting” dependence on the AC source. A renewable energy source will raise the battery voltage as it charges the batteries.
Operation Multiple-Inverter Installations (Stacking) Multiple inverters in a single system can support larger loads than a single inverter can handle. Installing inverters in this configuration is called “stacking”. Stacking inverters does not refer to physically placing one on top of another. It refers to how they are wired within the system and then programmed to coordinate activity. Stacking allows all units to work together as one system.
Operation the following message: An inverter firmware mismatch has been detected. Inverters X, Y, Z 2 are disabled. Visit www.outbackpower.com for current inverter firmware. Installing multiple inverters without stacking them (or stacking them incorrectly) will result in similar errors and shutdown. Although stacking allows greater capacity, the loads, wiring, and overcurrent devices must still be sized appropriately. Additional terminations or bus bars may be required.
Operation Three-Phase Stacking (Three Inverters) In three-phase stacking, inverters are stacked to create three AC outputs in a wye configuration. The three outputs operate independently of each other. Each can run in independent Search mode if desired, although this does not normally occur when three-phase loads are connected. Each output is 120° out of phase from the others. Any two outputs produce 400 Vac between them. (This voltage is nominal and may vary with output settings.
Operation Power Save Each inverter consumes approximately 30 watts of idle power while it remains on, even if it is not actively inverting or charging. The Power Save function allows the option to put part of a parallel system into a quiescent state known as Silent mode. This mode minimizes the idle consumption. The inverters will come on again when the loads require power. (The term “Silent” is also used in an unrelated context during battery charging. See page 30.
Operation depending on the inverter’s stacking designation. Master Power Save Level appears on an inverter which is set as master (the default setting). In a stacked system, this selection should only appear on the inverter using Port 1 of the communications manager. The range of rank numbers is 0 to 31. The default value is 0. The master is normally left at this value. This heading also appears on an inverter which is set as the B phase or C phase master. The range of rank numbers is 0 to 31.
Operation Additional Notes for the Radian GS7048E: The GS7048A has two modules. The modules are controlled individually. The Power Save function will activate one module at a time, making an additional 3.5 kW of power available for every load increase of approximately 2.5 kW. Figure 13 shows a system of four GS7048E inverters (the master and three slaves) in a parallel system with a common load bus. The labels at the top indicate the ranking of each unit.
Operation In Table 4, instead of loads, the number on the far left of each line shows the master increased by one rank. (This example is otherwise the same as Figure 13.) The last line of the table shows the master increased to 3, which is the same as the rank of the highest slave. However, this only activates the first of the three slaves. The master would need to be set to rank 7 to activate all slaves.
Operation Auxiliary Terminals The Radian inverter has two sets of terminals which can respond to different criteria and control many operations. The 12V AUX terminals provide a 12 Vdc output that can deliver up to 0.7 Adc to control external loads. The RELAY AUX terminals are “dry” relay contacts rated up to 10 amps (at 250 Vac or 30 Vdc). Each set of terminals has its own set of programmed criteria. Each has identical options available.
Operation examples are illustrated in the Radian Series Inverter/Charger Installation Manual. The AUX output will activate to start the generator when the battery voltage falls to a low set point for a settable delay. The AUX output is deactivated, shutting off the generator, once the battery voltage rises to a high voltage setting for a settable delay period. Settable parameters include: Low and high DC voltage On and off delay Gen Alert control logic is located in the inverter.
Operation GT Limits activates the AUX output as an alert that the utility grid does not meet Grid Interface Protection parameters for the grid-interactive function (see page 15). It can activate a light or alarm to show that the grid-interactive function has shut down and that there may be problems with the grid. The AUX output will cycle on and off if grid parameters are met and the reconnection timer is counting down.
Operation Table 5 Name Aux Mode Functions Triggers Purpose Start Stop Settable Points Load Shed Operates designated loads normally; turns off loads in severe conditions High Vdc Gen Alert Starts generator to charge batteries Low Vdc High Vdc Low & high Vdc On & Off delay Fault Signals that the Radian shut down due to error Error present Error cleared None Vent Fan Runs fan to vent batteries while charging High Vdc Below high Vdc High Vdc Off delay Cool
Operation System Display-Based Functions A system display such as the OutBack MATE3 can provide functions not available in the inverter. These functions are briefly described to provide a better idea of overall system capabilities. The system display must be present for these functions to operate. If a function is set up (or already in operation) but the system display is removed, the function will not operate.
Operation This mode has similar priorities to the Mini Grid input mode contained within the Radian inverter. Either mode may achieve similar results, but they are not identical. See page 18 for the advantages and disadvantages of each mode. Grid Use Time The inverter system is capable of connecting to, or disconnecting from, the utility grid based on time of day. It can also be programmed to connect at different times on weekdays and on weekends.
Metering MATE3 Screens The MATE3 system display can monitor the GS inverter and other networked OutBack devices. From the MATE3 Home screen, the Inverter “soft” key accesses the screens for monitoring the inverter. (See the MATE3 owner’s manual for more information.) 52.0 V 231 V Inverter Soft Key Figure 14 Home Screen Inverter Screens The Inverter soft key opens a series of screens showing the inverter operating mode, battery voltage, and status of several AC operations.
Metering Charge displays the kilowatts and AC amperage consumed for the inverter to charge the battery bank. This line also shows the present charging stage. Load displays kilowatts and AC amperage consumed by devices on the inverter’s output. It can be the same as Invert. Buy displays the kilowatts and AC amperage brought into the inverter’s input for both charging and loads. This is usually a total of Charge and Load. Battery displays the uncompensated battery voltage.
Troubleshooting Basic Troubleshooting Table 6 is organized in order of common symptoms, with a series of possible causes. Each cause also shows possible troubleshooting remedies, including system display checks where appropriate. Metal pads are located at these locations. In troubleshooting, AC voltages can be measured at this series of test points. Figure 17 AC Test Points WARNING: Shock Hazard During an error shutdown, the inverter’s output terminals are not live.
Troubleshooting Table 6 Symptom One or more inverters will not invert while others do (in multi-inverter system). Will not connect to the AC source. Troubleshooting Possible Cause Possible Remedy Unit is slave and is in Power Save mode. MATE3 system display only: Check Power Save levels in the Inverter Stacking menu and test with loads. Determine if the inverter comes on at the appropriate levels. (If this setting was intentional, then no action is required.) No AC input.
Troubleshooting Table 6 Symptom Low charge rate. Possible Cause Possible Remedy Charge complete or nearly complete. Check the DC voltage and charging stage using the MATE3, if present. Confirm with DC voltmeter. MATE3’s DC meter reads significantly higher than actual battery voltage. Check the DC voltage on the inverter’s DC terminals. If different from the MATE3 reading, the inverter could be damaged. Otherwise, check the DC voltage on batteries with a voltmeter.
Troubleshooting Table 6 Symptom Possible Cause Possible Remedy Grid-tied function has been manually disabled. MATE3 system display only: Check the Grid-Tie Enable setting in the Grid-Tie Sell menu. Confirm it is set to Y. Grid Tied mode not in use on the appropriate input. MATE3 system display only: Check the Inverter part of the Settings menu to see if Grid Tied mode is in use. Confirm that it has been selected for the correct Radian input terminals.
Troubleshooting Table 6 Symptom Inverter clicks repeatedly. AC output voltage rises or drops to unusual levels with every click. Unit reads AC input, even though no source is present. Possible Cause Possible Remedy Inverter’s output has been connected to its input. Voltage shifts are the result of trying to match its own voltage. Disconnect the wires from the inverter’s AC input or AC output terminals, or both. If the problem immediately disappears, it is an external wiring issue.
Troubleshooting Table 6 Symptom Advanced Generator Start (AGS) fails to activate when conditions are met (or starts when conditions are not met). AGS or Gen Alert functions start the generator, but the inverter does not accept the power and shuts off the generator again. Troubleshooting Possible Cause Possible Remedy MATE3 system display only: AGS function does not work if another valid input is present. Check both inputs for a second AC source (utility grid).
Troubleshooting Error Messages An error is caused by a critical fault. In most cases when this occurs, the unit will shut down. The MATE3 system display will show an event and a specific error message. This screen is viewed using the MATE3 Home screen’s soft keys. (See the MATE3 manual for more instructions.) One or more messages will display Y (yes). If a message says N (no), it is not the cause of the error.
Troubleshooting Warning Messages A warning message is caused by a non-critical fault. When this occurs, the unit will not shut down, but the MATE3 system display will show an event and a specific warning message. This screen is viewed using the MATE3 Home screen’s soft keys. (See the MATE3 manual for more instructions.) One or more messages will display Y (yes). If a message says N (no), it is not the cause of the warning.
Troubleshooting Table 8 Warning Troubleshooting Message Definition Possible Remedy Fan Failure The inverter’s internal cooling fan is not operating properly. Lack of cooling may result in derated inverter output wattage. Turn the battery disconnect off, and then on, to determine if the fan self-tests. After this test, contact OutBack Technical Support for the next step. (The next step will depend on the results of the test.
Troubleshooting Disconnect Messages Disconnect messages explain why the inverter has disconnected from an AC source after previously being connected. The unit returns to inverting mode if turned on. This screen is viewed using the AC INPUT hot key on the MATE3. One or more messages will display Y (yes). If a message says N (no), it is not the cause of the disconnection. The MATE3 system display may generate a concurrent event and warning message following the disconnection. (See page 58.
Troubleshooting Sell Status Sell Status messages describe conditions relating to the inverter’s grid-interactive mode. This screen is viewed using the MATE3 Home screen’s soft keys. (See the MATE3 manual for more instructions.) One or more messages will display Y (yes). If a message says N (no), it is not the cause of the disconnection. If the inverter has stopped selling or charging unexpectedly, this screen may identify the reason.
Troubleshooting NOTES: 62 900-0145-01-01 Rev B
Specifications Electrical Specifications NOTE: Items qualified with “default” can be manually changed using the system display. Table 13 Electrical Specifications for Radian Models Specification GS7048E GS3548E Continuous Output Power at 25°C 7000 VA 3500 VA Continuous AC Output Current at 25°C 30.4 Aac 15.
Specifications Table 13 Electrical Specifications for Radian Models Specification GS7048E GS3548E DC Input Maximum Current (surge) 406.5 Adc 203.3 Adc DC Input Maximum Current (short-circuit) 8975 Adc 4488 Adc Battery Charger Maximum AC Input 30 Aac at 230 Vac 15 Aac at 230 Vac Battery Charger Maximum DC Output 100 Adc 50 adc DC Output Voltage Range (charging) 44 to 68 Vdc 44 to 68 Vdc Auxiliary Output 0.7 Adc at 12 Vdc 0.
Specifications Temperature Derating All Radian inverters can deliver their full rated wattage at temperatures up to 25°C (77°F). The Radian maximum wattage is rated less in higher temperatures. Above 25°C, the GS7048E is derated by a factor of 70 VA for every increase of 1°C. The GS3548E is derated by 35 VA per 1°C. Figure 18 is a graph of wattage over temperature, showing the decrease in rated wattage with increased temperature.
Specifications the inverter exports power to a utility source. The OutBack inverter/charger models listed in this document are validated through compliance testing. The following specifications refer to exporting power to a simulated utility source of less than 1% voltage total harmonic distortion (THD). The THD of the root mean square (RMS) current is less than 5%. The output of the Radian inverter exceeds the minimum power factor of 0.85 with a typical power factor of 0.96 or better.
Specifications Firmware Revision This manual applies to inverter models GS7048E and GS3548E with Revision 001.005.xxx or higher. Updates to the Radian’s firmware are periodically available. These can be downloaded from the OutBack website www.outbackpower.com. See page 12. Default Settings and Ranges NOTE: Some items are retained at the present setting even when the inverter is reset to factory defaults. These items are noted with the letter “X” in the Item column.
Specifications Table 17 Field Radian Inverter Settings Item Default 230 Vac Minimum Maximum 200 Vac This selection is inoperative 260 Vac AC Output Output Voltage AC Coupled Mode Low Battery Cut-Out Voltage Cut-In Voltage 42.0 Vdc 50.0 Vdc 36.0 Vdc 40.0 Vdc 48.0 Vdc 56.0 Vdc Battery Charger Absorb Voltage (Absorb) Time Float Voltage (Float) Time Re-Float Voltage Re-Bulk Voltage 57.6 Vdc 1.0 hours 54.4 Vdc 1.0 hours 54.4 Vdc 49.6 Vdc 44.0 Vdc 0.0 hours 44.0 Vdc 0.0 hours 44.0 Vdc 44.
Specifications Table 17 Field Item Inverter Stacking Power Save Ranking Radian Inverter Settings Default Stack Mode Master Minimum Maximum Master, Slave, B Phase Master, C Phase Master Mode = Master: Master Power Save Level 0 0 31 Mode = Slave: Slave Power Save Level 1 1 31 Mode = B Phase Master Master Power Save Level 0 0 31 Mode = C Phase Master: Master Power Save Level 0 0 31 Grid-Tie Sell Module Control Calibrate Grid-Tie Enable Y 52.0 Vdc Sell Voltage Y or N 44.
Specifications Definitions The following is a list of initials, terms, and definitions used in conjunction with this product.
Index 12V AUX ................................................................................43 Silent ................................................................................30 Steps.......................................................................... 29, 31 Commissioning .................................................................... 9 Cool Fan ................................................................................44 A D Absorption Stage.....................................
Index GT Limits ...............................................................................45 GT Warnings ........................................................................59 R H Regulatory............................................................................65 Relay AUX .............................................................................43 Remote System Display ...................................................70 Remote Temperature Sensor (RTS) ......................
Index V W Vent Fan Control ................................................................44 Warning Symbol .................................................................. 5 Warnings ..............................................................................58 Website ..........................................................................
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