Date: Revision: Form: 8-4-2010 0 2396 Bryan Steam LLC Installation and Operating Service Manual Triple-Flex High Efficiency Boilers
Date: Revision: Form: 8-4-2010 0 2396 INSTALLATION AND OPERATION SERVICE MANUAL Triple-Flex 150, 200, 250, & 300 High Efficiency Boilers Bryan Steam LLC 783 North Chili Avenue * Peru, IN 46970 Phone 765.473.6651 • Fax 765.473.3074 E-mail: inquiry@bryansteam.com Internet: www.bryanboilers.
Date: Revision: Form: 8-4-2010 0 2396 Table of Contents Bryan Steam LLC ..............................................................................................................................i Installation and Operating Service Manual........................................................................................i Table of Contents ............................................................................................................................ iii Tables .........................
Date: 8-4-2010 Revision: 0 Form: 2396 2.2.11 Operation Page ............................................................................................................ 22 2.2.12 Annunciation Page....................................................................................................... 23 2.2.13 Modulation Configuration ............................................................................................. 23 2.2.14 Firing Rate Control Page ...............................................
Date: 8-4-2010 Revision: 0 Form: 2396 Tables Table 1 Minimum Clearance............................................................................................................ 2 Table 2 Electrical Requirements...................................................................................................... 4 Table 3 Boiler Draft.......................................................................................................................... 7 Table 4 Water Flow Switch Settings...............
Date: 8-4-2010 Revision: 0 Form: 2396 Figure 35 Outdoor Reset Sensor Configuration ............................................................................ 26 Figure 36 Air / Gas Ratio Tappings ............................................................................................... 35 Figure 37 LL / Multi-Boiler Field Wiring .........................................................................................
Date: 8-4-2010 Revision: 0 Form: 2396 Section 1 Installation Instructions– Triple-Flex High Efficiency Boilers 1
Date: 8-4-2010 Revision: 0 Form: 2396 1.2.1 MINIMUM CLEARANCES TO COMBUSTIBLE SURFACES Note: Please read and save for future reference the entire instruction manual before attempting installation of or starting the unit. Insurance and local or state regulatory codes may contain additional or more stringent requirements than those contained in this manual. Installation must conform to these codes and any other authority having jurisdiction.
Date: 8-4-2010 Revision: 0 Form: 2396 BE REMOVED after the boiler is set in-place on its concrete foundation before any piping/electrical connections are made. It is recommended that the plastic protective cover be left on as long as possible to reduce finish damage from the installation. 1.4.5 CONDENSATE DRAIN CONNECTION A 1” MPT connection is provided to drain the condensed products of combustion from a trap located beneath the boiler. This must be run to a drain using stainless steel or PVC piping.
Date: 8-4-2010 Revision: 0 Form: 2396 valve shall be tested for leaks. Model TF300/250 TF200/150 200 V – 240 V / 60 Hz / 3 Ph Blower Motor 3 (4.02) N/A KW (HP) Full Load 15.6 N/A Amps1 Service Fuse (3) 20 Amp N/A 400 V – 480V / 60 Hz / 3 Ph Blower Motor N/A N/A KW (HP) Full Load N/A N/A Amps1 Service Fuse N/A N/A 200 V – 240 V / 60 Hz / 1 Ph Blower Motor N/A 1.05 (1.41) KW (HP) Full Load N/A 6 Amps1 Service Fuse N/A (2) 7 Amp 1.4.
Date: 8-4-2010 Revision: 0 Form: 2396 interlocked with the boiler to prevent boiler operation if the dampers are closed. One Permanent Opening Method Combustion air openings must never be blocked or obstructed in any manner. One opening commencing within 12” of the top of the room shall be provided. The opening shall be directly to the outside or shall be ducted to the outside with a horizontal or vertical duct. The boiler room must be at a positive or neutral pressure relative to the outdoors.
Date: 8-4-2010 Revision: 0 Form: 2396 specified. Where the louver and grille design and free area are not know, it shall be assumed that wood louvers have a 25 percent free area, and met louvers and grilles have 75 percent free area. Non-motorized louvers and grilles shall be fixed in the open position. BOCA, National Mechanical Code WARNING: Do not locate air intakes where petroleum distillates, CFC’s, detergents, volatile vapors or any other chemicals are present.
Date: 8-4-2010 Revision: 0 Form: 2396 Horizontal sections of the flue vent system must be pitched back towards the boiler at ¼ inch per foot to avoid condensate pooling and allow for proper drainage. Venting may be horizontal, through the wall installation or vertical, through the roof installation. The vent system, including terminus, must be sized in accordance with the flue gas flow(s) and pressure drop(s) per Table 3. Boiler Model Flue Gas Flow, ACFM @40%X SA o 200 F Comb Air Req.
Date: 8-4-2010 Revision: 0 Form: 2396 Combustion Air Supply Dampers, Louvers, and Grilles • The free area of the combustion air supply opening shall be calculated by subtracting the blockage area of all fixed louvers, grilles or screens from the gross area of the opening. Openings in a fixed louver, grille, or screen shall have no dimension smaller than ¼” (6 mm). No manually operated damper or manually operated adjustable louvers are permitted.
Date: 8-4-2010 Revision: 0 Form: 2396 1.8.1 HYDROSTATIC TEST OF BOILERS AND SYSTEM After completing the boiler and burner installation, the boiler connections, fittings, attachments and adjacent piping must be inspected for leaks by filling the unit with water. The pressure should be gradually increased to a pressure just below the setting of boiler safety relief valve(s). Remove the boiler tube access panels (see dimensional drawing in the boiler manual).
Date: 8-4-2010 Revision: 0 Form: 2396 Section 2 Start-Up and Operation Triple-Flex High Efficiency Boilers 10
Date: 8-4-2010 Revision: 0 Form: 2396 2.1.1 TRIPLE-FLEX FRONT VIEW WARNING: Improper servicing and start-up of this equipment may create a potential hazard to equipment, operators, or persons in the building. Only fully trained and qualified personnel should do servicing and start-up. WARNING: Before disconnecting or opening any fuel line, cleaning or replacing parts of any kind take the following precautions. Turn OFF the main fuel shutoff valves, including the pilot gas cock if applicable.
Date: 8-4-2010 Revision: 0 Form: 2396 the touch panel display. There is a soft switch (paragraph 2.2.11) provided with the SOLA hydronic control that will put the boiler into standby for an indefinite period of time. 2.1.2 TRIPLE-FLEX REAR VIEW WARNING: The boiler on / off switch will not turn off the 3 phase high voltage power to the motor. 7. The boiler lockout reset button is a push button used to reset the hydronic control after a boiler failure. 8.
Date: 8-4-2010 Revision: 0 Form: 2396 1. Main gas inlet connection. This connection is a 2” male national pipe thread. 2. Condensate Drain Connection. This connection is a 1” male national pipe thread. For installation details refer to paragraph 1.4.5. 3. This jacket access panel will permit access to the majority of the boiler devices. 4. These jacket access panels will permit access to the flue collector. There is no practical reason for the removal of these panels. 5.
Date: 8-4-2010 Revision: 0 Form: 2396 port is also used to record the furnace pressure. 15. Boiler water flow switch. The boiler water flow switch is adjustable within the parameters listed in the table. NOTE: The low fire displacement final adjustment should be made at low fire only. 3. Main gas pressure regulating and shutoff valve actuator. The pressure regulating actuator provides slow opening fast closing safety shutoff and air/gas ratio control.
Date: 8-4-2010 Revision: 0 Form: 2396 block. Control circuit transformer. 24 volt ac transformer. 12 volt dc power supply. SOLA hydronic and flame supervision control. 25. Repeat cycle timer. This timer will ensure that a forced shut down and pre-start safety check is performed at least once in a 24 hour period. This timer has been incorporated into the SOLA control for newer boilers. 26. Gas limiting orifice valve. This valve is used to increase or decrease the gas / air ratio for combustion.
Date: 8-4-2010 Revision: 0 Form: 2396 Actual length and width are 3⁄8” less than trade size shown. Filters meet UL Class 2 flame retardance requirements. Maximum temperature is 180° F. 2.2.2 HOME PAGE Make sure a screen similar to Figure 12 appears after the system is completely powered up. The directional map shown before each page description in this manual will start with this 2.1.8 TRIPLE-FLEX RIGHT FLUE COLLECTOR VIEW symbol . Pressing this symbol will return you to the home page.
Date: 8-4-2010 Revision: 0 Form: 2396 2.2.4 KEYBOARD NOTE: The boiler name may be cut off on the Home page when all boilers are present for the hydronic system. The Home page also includes a System Analysis button that allows the user to view status information on a system-wide (that is, multiple boiler) basis. The user can choose which status information to compare from the boilers in the system. Pressing the Setup button on the Home page displays miscellaneous display setup and diagnostic functions. 2.
Date: 8-4-2010 Revision: 0 Form: 2396 2.2.5 STATUS PAGE Details: Used to view boiler detail status information. ► History: Used to view R7910 history. Modulation: Used to toggle between two different status displays: modulation, and setpoints. 2.2.6 CONFIGURATION PAGE ► ►CONFIGURE Figure 14 Status Page The status page (Figure 14) is displayed when a boiler is selected on the Home page.
Date: 8-4-2010 Revision: 0 Form: 2396 applicable for the functional group on the page (Figure 16). for a parameter that has a lower access level than the access level achieved by an earlier password entry for any configuration group (as long as the user stays in the configuration pages). The user only needs to enter a password once until a parameter that has a higher access level is selected. The user enters the password from a keyboard as shown in Figure 13.
Date: 8-4-2010 Revision: 0 Form: 2396 validates all password entry attempts with the boiler, but doesn’t conduct the validation itself. The boiler has sole responsibility to accept a password entry. There are two classes of parameters. Non-Safety: Non-safety parameters can be changed without placing the boiler in a dangerous state. These parameters typically do not require a password to modify.
Date: 8-4-2010 Revision: 0 Form: 2396 A verification step is required for each safety parameter block that is changed. The verification steps do not have to be completed immediately; the user can traverse between parameter groups before the verifications are done. If the user is logged in with the appropriate password and has changed a safety configuration parameter, a verify button is enabled that allows the user to conduct verification sessions.
Date: 8-4-2010 Revision: 0 Form: 2396 button turns red (Figure 22). On all other pages and when the user is looking at a different boiler, a notification dialog box displays indicating which boiler just locked out. Figure 23 History Dialog The lockout history can be displayed for each boiler. The state information about each lockout is displayed along with the date/time that the lockout occurred.
Date: 8-4-2010 Revision: 0 Form: 2396 annunciation information, and switch between heating loops (Central Heat and Domestic Hot Water), as shown in Figure 25. If a password is required to change any of the settings on this page, the user can press the Login button to enter the password. 2.2.13 MODULATION CONFIGURATION ► ► CONFIGURE ► MODULATION CONFIGURATION 2.2.
Date: 8-4-2010 Revision: 0 Form: 2396 the user to manually control the firing rate while the boiler is firing. The third option can be selected to change the rpm of the blower while the boiler is off or in standby. The manual firing rate can be changed by pressing the clear button and entering the new value or by using the up and down arrows. To accept the new value press the ok button and the boiler will change the firing rate to the new value.
Date: 8-4-2010 Revision: 0 Form: 2396 calibrated. When the screen is touched in a spot and unexpected results occur this is a good indication that the display needs to be calibrated. To calibrate the touch screen select the ‘Calibrate’ button and follow the on screen directions. Try using a stylus of some kind if the problem persists. The eraser end of a pencil or the blunt end of a pen can be used as a good stylus. 2.2.19 OUTDOOR RESET ► ► CONFIGURE ► OUTDOOR RESET ► (page) CENTRAL HEAT 2.2.
Date: 8-4-2010 Revision: 0 Form: 2396 (Figure 34). The normal reset curve is shown in green and the time of day is red. ► ► CONFIGURE ► CH - CENTRAL HEAT CONFIGURATION ► (page) CENTRAL HEAT ► (Outdoor Reset) ENABLED Note: y1 is the maximum water setpoint value found in ‘CH – Central heat Configuration’ on the ‘Setpoint’ page. 2.2.
Date: 8-4-2010 Revision: 0 Form: 2396 Setpoint source 2.2.21 CENTRAL HEAT CONFIGURATION ► Setpoint Time of day setpoint ► CONFIGURE ► CH - CENTRAL HEAT CONFIGURATION Off hysteresis On hysteresis 4 mA water temperature 20 mA water temperature Local S2 (J8-6) 4-20mA Setpoint for normal Central Heat modulation: 50 °F to 190 °F Setpoint when Time Of Day switch is on. 50 °F to 190 °F Differential above setpoint when boiler is turned off. 2 °F to 5 °F Differential from setpoint when boiler is turned on.
Date: 8-4-2010 Revision: 0 Form: 2396 Model Front TF150 TF200 TF250 TF300 55.5 62.1 77.7 77.7 Decibel Readings Tube Rear Side 58.0 59.5 65.1 66.3 82.8 82.7 82.8 82.7 Right Side 58.5 65.4 82.8 82.
Date: 8-4-2010 Revision: 0 Form: 2396 13 2.2.23 MODBUS COMMUNICATION 14 The hydronic control Global Modbus port is a 3pin connector that interfaces to the following RS485 signals: 15 16 17 Table 7 Modbus Terminals Signal Data + Data Common Terminal a b c 18 19 20-26 27 28 29 30 Modbus connections can be made at the display (Figure 3 item 5) or the hydronic control (Figure 7 item 24).
Date: 8-4-2010 Revision: 0 Form: 2396 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70-74 75 76 77 78 79 80 81 82-89 90 91 92 93 94 95 96 Illegal Modbus read was attempted Safety processor brown-out reset occurred Application processor watchdog reset occurred Application processor brown-out reset occurred Safety processor watchdog reset occurred Alarm was reset by the user at the control Burner control firing rate was > absolute max rate Burner control firing rate was < absolute min rate Burner contr
Date: 8-4-2010 Revision: 0 Form: 2396 129 130 131 132 133 134 135 136 137 138 139 140 141145 146 147 148 149 150156 157 158 159 160 161 162 163 164 165 166 167170 171 172 173 174 175182 183 184 185 186 187 188 189 190203 Slow start ramp setting of zero will result in no modulation rate change RESERVED CH demand source was invalid CH P-gain was invalid CH I-gain was invalid CH D-gain was invalid CH OFF hysteresis was invalid CH ON hysteresis was invalid CH sensor type was invalid CH hysteresis step time wa
Date: 8-4-2010 Revision: 0 Form: 2396 263271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 RESERVED 297 Abnormal Recycle: Pressure sensor fault Abnormal Recycle: Safety relay drive test failed Abnormal Recycle: Demand off during Pilot Flame Establishing Period Abnormal Recycle: LCI off during Drive to Purge Rate Abnormal Recycle: LCI off during Measured Purge Time Abnormal Recycle: LCI off during Drive to Lightoff Rate Abnormal Recycle: LCI off durin
Date: 8-4-2010 Revision: 0 Form: 2396 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 Abnormal Recycle: Safety Relay off after 10 seconds of RUN Abnormal Recycle: Hardware flame bias Abnormal Recycle: Hardware static flame Abnormal Recycle: Hardware flame current invalid Abnormal Recycle: Hardware flame rod short Abnormal Recycle: Hardware invalid power Abnormal Recycle: Hardware invalid AC line Abnormal Recycle: Hardware SLO flame ripple Abnorma
Date: 8-4-2010 Revision: 0 Form: 2396 469 470 471 472 473 474 475 476 477 478 479 480 483 484 485 486 487 488 489 490 491 492 493 494 495 496 Internal error: EEPROM days count address was invalid Internal error: EEPROM hours count address was invalid Internal error: Lockout record EEPROM index was invalid Internal error: Request to write PM status was invalid Internal error: PM parameter address was invalid Internal error: PM safety parameter address was invalid Internal error: Invalid record in lockout
Date: 8-4-2010 Revision: 0 Form: 2396 The regulating gas valve is a 1:1 differential pressure air / gas ratio controller. This means that the control adjusts the same pressure difference on the gas side as it senses on the airside. The airside pressure is the difference between the pressure in the burner housing and the pressure downstream of the furnace section. The gas side pressure is the difference between the pressure upstream and downstream of the gas limiting orifice valve.
Date: 8-4-2010 Revision: 0 Form: 2396 seconds the purge timer will start and count to 30. After 30 seconds the fan speed is reduced to the light off rate. When the fan speed is with in +/- 3% of the firing rate for 3 seconds the ignition transformer and the pilot valve are energized. The pilot will light and can be observed from the observation port (Figure 5 item 4). After a duration of 5 seconds the ignition transformer will de-energize.
Date: 8-4-2010 Revision: 0 Form: 2396 for NOx, O2, and CO should be made at the maximum firing rate. No further adjustments are required of the gas limiting orifice valve. Return to the minimum low fire rate (paragraph 2.2.13) in increments of 500 rpm. For each increment verify combustion readings. Refer to trouble shooting (paragraph 0) for further help. WARNING: During pilot adjustment leave the manual main gas cock (Figure 7 item 4) closed.
Date: 8-4-2010 Revision: 0 Form: 2396 Gas Manifold Pressure (IWC) 4.4 3.6 4.0 2.0 Max RPM 60007000 51005500 35504200 27002850 Low Fire Gas Manifold Pressure (IWC) Min RPM .3 .3 .2 .2 12001600 12001600 800950 800950 cubic feet per hour). Consult the National Fuel Gas Code (ANSI Z223.1, NFPA 54) or the local gas utility for further information. Refer to Table 10 for correction factors for the gas pressure at the meter. Refer to Table 11 for the gas temperature correction factors.
Date: 8-4-2010 Revision: 0 Form: 2396 2.4 TROUBLESHOOTING To support the recommended Troubleshooting, the R7910 has an Alert File. Review the Alert history for possible trends that may have been occurring prior to the actual lockout.
Date: 8-4-2010 Revision: 0 Form: 2396 Code 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Description Internal fault: Safety relay test failed due to feedback ON Internal fault: Safety relay test failed due to safety relay OFF Internal fault: Safety relay test failed due to safety relay not OFF Internal fault: Safety relay test failed due to feedback not ON Internal fault: Safety RAM write Internal fault: Flame ripple and overflow Internal fault: Flame number of sample mismatch Internal fault: Fl
Date: 8-4-2010 Revision: 0 Form: 2396 Code 32-46 47 48 49 50 51 52 53 54-57 58 Description Internal fault: Safety Key 0 through 14 Flame Rod to ground leakage Static flame (not flickering) 24VAC voltage low/ high Modulation fault Pump fault Motor tachometer fault AC inputs phase reversed 63 RESERVED Internal fault: HFS shorted to IAS Internal Fault: Mux pin shorted Internal Fault: HFS shorted to LFS Anti short cycle Fan speed not proved LCI OFF 64 PII OFF 65 Interrupted Airflow Switch OFF Interrupt
Date: 8-4-2010 Revision: 0 Form: 2396 Code 68 Description ILK ON 69 Pilot test hold 70 Wait for leakage test completion RESERVED Demand Lost in Run 71-77 78 79 Outlet high limit 80 DHW high limit 81 Delta T limit 82 Stack limit 83-90 91 RESERVED Inlet sensor fault 92 93 94 95 Outlet sensor fault DHW sensor fault Header sensor fault Stack sensor fault Recommended Troubleshooting of Lockout Codes This lockout occurs when the interlock string is closed before the blower starts.
Date: 8-4-2010 Revision: 0 Form: 2396 Code Description 96 Outdoor fault 97 Internal Fault: A2D mismatch. Internal Fault: Exceeded VSNSR voltage tolerance Internal Fault: Exceeded 28V voltage tolerance Pressure Sensor Fault 98 99 100 101104 105 106 107 108 109 110 111 112 113 114121 sensor Recommended Troubleshooting of Lockout Codes 2. Replace the stack sensor. 3. If previous steps are correct and fault persists, replace the module 1. Check wiring and correct any possible errors. 2.
Date: 8-4-2010 Revision: 0 Form: 2396 Code 122 123 124 125 126 127 128 129 130 131 132 133135 136 Description Lightoff rate proving failed Purge rate proving failed Recommended Troubleshooting of Lockout Codes 1. Check wiring and correct any potential wiring errors. 2. Check VFDs ability to change speeds. 3. Change the VFD 4. If the fault persists, replace the module.
Date: 8-4-2010 Revision: 0 Form: 2396 Code Description 152 Combustion pressure ON Combustion Pressure Off 153 154 155 156 157 Purge Fan switch On Purge fan switch OFF Combustion pressure Flame ON Combustion pressure Flame OFF and and 158 159 Main valve ON Main valve OFF 160 161 Ignition ON Ignition OFF 162 163 Pilot valve ON Pilot valve OFF 164 Block intake ON Recommended Troubleshooting of Lockout Codes 1. Check wiring and correct any potential wiring errors. 2.
Date: 8-4-2010 Revision: 0 Form: 2396 Code 165 Description Block intake OFF 166171 172 RESERVED 173 174 175 176 177 178 179183 184 185 186 187 188 189 190 191 192 193 194 195 Recommended Troubleshooting of Lockout Codes 1. Check wiring and correct any errors. 2. Inspect the Block Intake Switch to make sure it is working correctly. 3. Reset and sequence the module. 4. During Standby and Purge, measure the voltage across the switch. Supply voltage should be present.
Date: 8-4-2010 Revision: 0 Form: 2396 Code 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 Description Invalid ignition source setting Invalid interlock open response setting Invalid interlock start check setting Invalid LCI enable setting Invalid lightoff rate setting Invalid lightoff rate proving setting Invalid Main Flame Establishing Period time setting Invalid MFEP flame failure response setting Invalid NTC sensor type setting Invalid Outlet high limit resp
Date: 8-4-2010 Revision: 0 Form: 2396 Code 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 Description Invalid Stack limit response setting Unconfigured Delta T limit setpoint setting Unconfigured DHW high limit setpoint setting Unconfigured Outlet high limit setpoint setting Unconfigured Stack limit setpoint setting Invalid DHW demand source setting Invalid Flame threshold setting Invalid Outlet high limit setpoint setting Invalid DHW high limit setpoint setting In
Date: 8-4-2010 Revision: 0 Form: 2396 Code 241255 Description RESERVED Recommended Troubleshooting of Lockout Codes 49 Code
Date: 8-4-2010 Revision: 0 Form: 2396 Section 3 Care and Maintenance 50
Date: 8-4-2010 Revision: 0 Form: 2396 important to keep these fumes from air intakes that would distribute them throughout the building. WARNING: The boiler area should be kept free of combustible materials, gasoline and other flammable liquids. 3.1.2 BOIL OUT PROCEDURE The boil out of the boiler and system is neither difficult nor expensive. The chemicals needed for cleaning are readily available. Tri-sodium phosphate, and sodium hydroxide (lye) are the most commonly used chemicals.
Date: 8-4-2010 Revision: 0 Form: 2396 the tank. 3.1.3 DRAINING THE SYSTEM Install a strainer in the boiler return piping. A clean neutral hot water system should not be drained, except for an emergency or when unavoidable for servicing of equipment. See Section 3.3 for water treatment required when refilling. 3.3 BOILER WATER TREATMENT Purpose of water treatment 3.
Date: 8-4-2010 Revision: 0 Form: 2396 not less than four times a year, and possibly more frequently as the local water conditions may indicate. All water introduced into the boiler should be softened and should include an oxygen scavenger like sodium sulfite. This is required to remove dissolved oxygen from the water. Dissolved oxygen will cause severe boiler tube corrosion. WARNING: If soot or condensation is apparent, a boiler service technician should be consulted.
Date: 8-4-2010 Revision: 0 Form: 2396 inspected at least annually. Any accumulation of soot or debris should be thoroughly cleaned out. 2. If the yearly inspection of the boiler tube surfaces reveals a build-up of soot (carbon), the tubes surfaces should be thoroughly brushed. Failure to do so may result in fire or asphyxiation hazards. 3. The boiler pressure vessel and piping should be checked annually.
Date: 8-4-2010 Revision: 0 Form: 2396 Section 4 Lead Lag 55
Date: 8-4-2010 Revision: 0 Form: 2396 There are parameters that are available to set the features for Lead Lag. The LL master turns the first stage on and eventually turns the last stage off using the same criteria as for any modulation control loop. When the operating point reaches the Setpoint minus the On hysteresis, then the first Sola is turned on. When the operating point reaches the Setpoint plus the Off hysteresis then the last slave Sola (or all slave Solas) are turned off.
Date: 8-4-2010 Revision: 0 Form: 2396 three groups: "Use First", "Equalize Runtime", or "Use Last". If one or more Solas are in the "Use First" category, then one of these (the one with the lowest sequence number) will always be the first boiler to fire. If there is no Sola in the "Use First" category and one or more are in the "Equalize Runtime" category, then the First boiler is also the Lead boiler.
Date: 8-4-2010 Revision: 0 Form: 2396 4.
Date: 8-4-2010 Revision: 0 Form: 2396 be used (a)Lead Outlet - Outlet temperature of the lead boiler will be used as the backup during firing (i) Slave Outlet Average - Average of the outlet temperatures of all slave boilers that are firing will be used as a backup (b) If the sensor chosen by the above parameter is faulty then the backup sensor provided may be used.
Date: 8-4-2010 Revision: 0 Form: 2396 diagram below: Baseload common (i) “BL” for baseload (ii)User selection 0 – 100 % (d)Use existing timeout, Done button, and Next button functionality to enter these parameters. (e)User selections will be selected by MMI. (i) The local display does not adhere to the PCB (OEM parameter selections used by S7999).
Date: 8-4-2010 Revision: 0 Form: 2396 algorithm. (Any Solas set to Use First will precede any that are set to Equalize Run time.) If set to Use Last, then this burner will be used only after all Use First and Equalize Runtime Solas have been brought online. parameters that enable and disable its operation. • Periodic data polling - The LL master uses polling to discover new slave Sola devices and to periodically refresh the information it has about a known slave Sola devices.
Date: 8-4-2010 Revision: 0 Form: 2396 off all slaves and enters an idle or standby condition. discover what happened in a subsequent status response). The LL master also sends this message to a slave that is OnLeave. (This ensures that if the slave is firing when it returns to LL master control, it will stay that way until the master has decided whether to use it; or conversely, if the slave stops firing for some reason that it will not start up again until the LL master has requested this.
Date: 8-4-2010 Revision: 0 Form: 2396 INVALID RESPONSE OR NO RESPONSE momentary communication problems and to act on these if they are excessive. • StatusReadFaultCounter: Used to tolerate momentary communication problems and to act on these if they are excessive. • AbnormalFaultCounter: Used to tolerate momentary abnormality • StagingOrder: Used to record the stage-on order, for use by the sequencer when it needs to drop a stage.
Date: 8-4-2010 Revision: 0 Form: 2396 New occurrences of CH demand is inhibited. DHW demand is not affected. LL CH DEMAND SWITCH: DISABLE, STAT, ENVIRONCOM REMOTE STAT The inputs that can function as the CH demand switch are: STAT, EnvironCOM Remote Stat. If the CH demand switch value is Disable, the LL master does not respond to CH demand.
Date: 8-4-2010 Revision: 0 Form: 2396 following sources of demand. All sources that are currently calling for heat will be true (multiple items may be true at the same time) except when WWSD is active, then CH demand is inhibited. These are used to detect turn-on and turn-off conditions. The difference between operating point and setpoint determines the LL master's firing rate CH Demand CH Frost demand – true if any slave is calling for CH frost protection and Frost protection enable is true. 4.7.
Date: 8-4-2010 Revision: 0 Form: 2396 None • LL CH ODR boost step: degrees or None • LL CH ODR boost recovery step time:mm:ss or None that way until the 4- 20mA signal is stable again. LL CH 20MA WATER TEMPERATURE OR NONE TEMPERATURE: The outdoor reset function requires the outdoor temperature. This temperature may be obtained from either a local sensor or a LL slave as described earlier.
Date: 8-4-2010 Revision: 0 Form: 2396 algorithms are used. Additionally: of step 1 are no longer true (demand has decreased) then it clears the flag.
Date: 8-4-2010 Revision: 0 Form: 2396 Lead Lag burner demand will be present when Frost protection burner demand is true, as described in the section on Frost protection. For the CH, and DHW demand sources, Lead Lag burner demand will be true when one of these is true and also setpoint demand from the hysteresis block is true. each slave. Some rate allocation algorithms may specify the use of this parameter, and that the slave base load settings are ignored. 4.7.
Date: 8-4-2010 Revision: 0 Form: 2396 For the Parallel common-base limited the minimum modulation rate provides the underflow threshold. the LL master is not asking for less heat than this, then the underflow rate is 0%. If it is at this location and the LL master is asking for 10% less than the threshold value, then the underflow rate is -10%. If the last stage is 5% above the threshold then the underflow rate is 5%.
Date: 8-4-2010 Revision: 0 Form: 2396 4.7.10 BURNER DEMAND If so then the stager: Changes the SlaveState to Suspend- Stage, resets and starts its StagerTimer, sets the StagerTimeLimit to T_StagerSuspend. This allows additional time for the slave to reach its firing condition. The stager checks the Master’s LL burner demand.
Date: 8-4-2010 Revision: 0 Form: 2396 Stager can execute an AddStage or DropStage request. amount greater than or equal to Add-stage error threshold Add Stage Methods When the Add-stage condition is false then AddStage- DetectTimerN is set to zero. (If the condition is true then AddStageDetectTimerN is not zeroed and thus allowed to run.) If this timer reaches or exceeds LLAdd- stage detection timeN then AddStageRequestN is true.
Date: 8-4-2010 Revision: 0 Form: 2396 DropStageDetectTimerN is set to zero. (If the condition is true then DropStageDetectTimerN is not zeroed and thus allowed to run.) If this timer reaches or exceeds Dropstage detection timeN then DropStageRequestN is true. that: Drop-Stage detection time is used with DropStageDetectTimer In the descriptions below, the relevant parameter is referred to as LL – Drop Stage detection timeN}.
Date: 8-4-2010 Revision: 0 Form: 2396 hysteresis is ignored if one or more lag boilers are firing. • If LDSE is enabled: The Burner Off threshold provided by LL off hysteresis is ignored also for the lead boiler when it is firing solo (i.e. when no lag boilers are firing). • If LDSE is disabled: When the lead is firing solo and the operating point reaches the Burner Off threshold specified by LL off hysteresis turns off LL master burner demand (and thus the lead boiler). modulation rate.
Date: 8-4-2010 Revision: 0 Form: 2396 a sequence number greater than this number is used, or — If no boiler has a greater sequence number, then the one that has the smallest sequence number is used (wrap around). assigning an ordering number and that the lowest numbers are the first to be added. • Any Available slaves that have a mode of Use First will have the lowest ordering numbers.
Date: 8-4-2010 Revision: 0 Form: 2396 3 will be first if there is no 1 or 2. StagingOrder numbers of all Firing boilers. If only one Firing boiler is found, or none are found, then this selection function returns a value that indicates no boiler may be dropped. Otherwise it returns an identifier for the boiler having the highest StagingOrder number.
