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Bryan Boilers Triple-Flex 150 Installation And Operating Service Manual Download Page 32

 

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. 
 

 

Figure 34 Outdoor Reset Curve 

 

► ►

 CONFIGURE  

►

 SENSOR CONFIGURATION  

►

 (Sensor) S5 (J8-11) sensor  

►

 (Connector type) 10K NTC single 

non-safety  

►

 (Outdoor temperature source) S5 

(J8-11) sensor  

 

Figure 35 Outdoor Reset Sensor Configuration 

 

Note: 

Update the sensor name to ‘Outdoor Sensor’  by 
selecting a different sensor then reselecting the 
S5 (J8-11) sensor. 

 

► ►

 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. 

2.2.20 R

EMOTE 

S

ETPOINT 

(4 – 20 

M

A) 

► ►

 CONFIGURE 

►

 SENSOR CONFIGURATION 

►

 (Sensor) S2 (J8-6) sensor 

►

 (Connector type) 4-20mA 

►

 SAFETY VERIFICATION 2.2.9  

 

► ►

 CONFIGURE 

►

 CH - CENTRAL HEAT 

CONFIGURATION 

►

 (page) SETPOINT 

►

 (Setpoint Source) S2 (J8-6) 4-20mA 

►

 (4 mA water temperature) MIN 

►

 (20 mA water temperature) MAX 

26 

 

 

Summary of Contents for Triple-Flex 150

Page 1: ...Date 8 4 2010 Revision 0 Form 2396 Bryan Steam LLC Installation and Operating Service Manual Triple Flex High Efficiency Boilers ...

Page 2: ...TALLATION 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 com ...

Page 3: ...7 Flue Gas Venting System 6 1 7 1 Design Installation 6 1 7 2 Combustion Air and Venting Requirements for Canada 7 1 7 3 Marking Of Gas Vents 8 1 8 Before Placing Boiler In Operation 8 1 8 1 Hydrostatic Test Of Boilers And System 9 1 8 2 Test Of Gas Piping 9 Section 2 Start Up and Operation Triple Flex High Efficiency Boilers 10 2 1 Boiler Assembly 11 2 1 1 Triple Flex Front View 11 2 1 2 Triple F...

Page 4: ...ction 3 Care and Maintenance 50 3 1 Cleaning The Boiler And System New Systems 51 3 1 1 Pre Boil Out Flushing Of System 51 3 1 2 Boil Out Procedure 51 3 1 3 Draining The System 52 3 2 Replacement Boiler Installations Protection Against Corrosion And Sediment 52 3 3 Boiler Water Treatment 52 3 4 External Fire Side Cleaning 53 3 5 Suggested Maintenance Schedule 53 Section 4 Lead Lag 55 4 1 General D...

Page 5: ...3 Figure 8 Air Flow Switch 14 Figure 9 Pilot Spark Igniter Assembly 15 Figure 10 Triple Flex Left Flue Collector View 15 Figure 11 Triple Flex Right Flue Collector View 16 Figure 12 Home Page 16 Figure 13 Keyboard 17 Figure 14 Status Page 18 Figure 15 Configuration Menu Page 18 Figure 16 Sample Configuration Page 19 Figure 17 Change Parameter Dialog 20 Figure 18 Safety Parameter Verification 20 Fi...

Page 6: ...Date 8 4 2010 Revision 0 Form 2396 Figure 35 Outdoor Reset Sensor Configuration 26 Figure 36 Air Gas Ratio Tappings 35 vi Figure 37 LL Multi Boiler Field Wiring 58 ...

Page 7: ...Date 8 4 2010 Revision 0 Form 2396 1 Section 1 Installation Instructions Triple Flex High Efficiency Boilers ...

Page 8: ...ed accordingly Provisions must also be made for service accessibility and clearance for piping and electrical connections Do not obstruct combustion air and ventilation openings with piping or any other construction All boilers must be installed in a space that is large compared to the boiler NOTE These boilers should be installed in a room that is large compared to the size of the boiler They are...

Page 9: ...pe size as this connection to allow draining of the boiler 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 The condensate temperature should never exceed 212o F and the pH of the condensate should never be greater than 3 5 NO VALVE is...

Page 10: ...N A Service Fuse N A N A 200 V 240 V 60 Hz 1 Ph Blower Motor KW HP N A 1 05 1 41 Full Load Amps1 N A 6 Service Fuse N A 2 7 Amp Table 2 Electrical Requirements Equipment Grounding The boiler must be grounded in accordance with the current American National Standard Electrical Code ANSI NFPA 70 1 6 COMBUSTION AIR SUPPLY Combustion Air For proper combustion it is necessary to provide the boiler room...

Page 11: ... in2 per 2000 BTU total input rating of the boiler s in the room One Permanent Opening Method 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 opening or duct shall have a minimum free area of 1 in2 3000 BTU hour of the total input ratting of all appliances...

Page 12: ... size of the opening s in walls for combustion air NFPA 54 National Fuel Gas Code ANSI Z223 1 ASME CSD 1 Controls and Safety Devices for Automatically Fired Boilers ASME Section VI Recommended Rules for Care and Operation of Heating Boilers BOCA National Mechanical Code WARNING Do not locate air intakes where petroleum distillates CFC s detergents volatile vapors or any other chemicals are present...

Page 13: ...hat have these products available 1 7 2 COMBUSTION AIR AND VENTING REQUIREMENTS FOR CANADA Canadian Standard CAN CSA B149 1 05 Natural gas and propane installation code specifies venting systems and air supply for appliances in Section 8 Paragraph 8 1 4 states Air supply shall be provided in accordance with Clause 8 4 when either an appliance or a combination of appliances has a total input exceed...

Page 14: ... the use of special vent that is certified A special venting system shall be installed in accordance with the terms of it s listing and the vent manufacturers certified installation manual A flue gas vent or a vent connector shall not be installed in either a duct or a shaft used for return air hot air ventilating air or combustion air An appliance that operates at a positive vent pressure shall n...

Page 15: ...imensional drawing in the boiler manual Inspect the tube to header joints to be certain that all tube fittings are sealed This is necessary because although the boiler is hydrostatically tested at the factory minor leaks in fittings and at attachments can develop from shipping vibration or from installation procedures It is often necessary to retighten such fittings after installation and after th...

Page 16: ...Date 8 4 2010 Revision 0 Form 2396 10 Section 2 Start Up and Operation Triple Flex High Efficiency Boilers ...

Page 17: ...e boiler dimensional for location dimensions A description of the major components follows For additional information refer to the manufactures literature provided in the boiler manual 2 1 1 TRIPLE FLEX FRONT VIEW Figure 3 Triple Flex Front View 1 The boiler cabinet door provides easy access to boiler and burner components This door should remain closed during normal operation to ensure proper flo...

Page 18: ... boiler s predefined parameters 10 The fuel on light will be amber in color and indicates that the boiler is firing and producing heated water 11 The boiler lockout light will be red in color and indicates that the boiler has failed The SOLA control will have additional information displayed on the touch panel display These failures will be explained in section 2 3 9 2 1 2 TRIPLE FLEX REAR VIEW Fi...

Page 19: ... Side View 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 ...

Page 20: ...ed with the main gas cock closed 8 Low pilot gas pressure switch Manual Reset 9 Pilot spark igniter assembly For further detail see Figure 9 10 Pilot gas solenoid valve 11 Flame scanner 12 Main gas manifold pressure test port 1 4 NPT 13 Main high gas pressure switch Manual Reset This switch should be set 1 of water column above the maximum gas manifold pressure 14 Pilot gas pressure test port 1 4 ...

Page 21: ...d be set 2 3 inches of water column below the minimum required supply gas pressure 28 Supply gas pressure test port 1 4 NPT 29 Air pressure sensing line connection 30 Air pressure sensing line connection 31 Gas pressure sensing line connection 32 Gas pressure sensing line connection 33 Burner internal temperature fuse This fuse senses the internal burner temperature and will open at a temperature ...

Page 22: ...ust the contrast as desired 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 symbol Pressing this symbol will return you to the home page Figure 12 Home Page On multi boiler applications each boiler in the hydronic system is represented on the Home pag...

Page 23: ...in progress The Back button returns the user to the previous page Two other icons may be noticed near the boiler name A bell will be displayed if the system is in lockout that reset will be required A padlock will be shown on screens that a password is needed to change the parameter An unlocked padlock indicates the password has been entered to change the parameter either the installer or OEM depe...

Page 24: ... for more details Diagnostic Used to view R7910 diagnostic information 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 15 Configuration Menu Page The configuration page allows the user to view and set parameters that define how ...

Page 25: ... required to enter a configuration password 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...

Page 26: ...e changed setting is reflected on the screen and sent to the boiler when the OK button is pressed 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 Safety Safety parameters can be viewed the same way non safety parameters can be viewed If the user makes n...

Page 27: ...firm each safety parameter block If the user selects the No button the safety parameter block remains unconfirmed and the configuration menu page is displayed The boiler remains in an un configured state in this case Figure 19 Safety Parameter User Confirmation After all safety parameter blocks have been confirmed the user is asked to press and hold the reset button Figure 3 item 7 on the boiler t...

Page 28: ...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 Figure 24 Lockout History Page Use the following to clear a lockout and reset the boiler INFO BAR LOCKOUTS CLEAR LOCKOUT 2 2 11 OPERATION PAGE OPERATION Figure 25 Operation Page 22 The operation page displays the boil...

Page 29: ...e called up at any time from the operation page Figure 25 This page is very helpful for troubleshooting a lockout 67 ILK off All components for a given string are wired in series The first component that indicates off will be the safety device to check 2 2 13 MODULATION CONFIGURATION CONFIGURE MODULATION CONFIGURATION Figure 27 Modulation Configuration The modulation configuration page is used to ...

Page 30: ... firing rate Note The firing rate control should come from the factory set to Manual in Run with the manual firing rate value set to the light off rpm 2 2 15 ADVANCED SETUP 1234 SETUP ADVANCED SETUP Figure 29 Advanced Setup The advanced setup page displays many more options that can be changed by the user 2 2 16 SYSTEM TIME 1234 SETUP ADVANCED SETUP DATE TIME Figure 30 System Time Set the date and...

Page 31: ... as shown in paragraph Power up Validation 2 2 1 2 2 19 OUTDOOR RESET CONFIGURE OUTDOOR RESET page CENTRAL HEAT Figure 33 Outdoor Reset Max outdoor temp x2 When the outdoor temperature is equal or greater than this value the boiler setpoint will be set to the low water temperature Min outdoor temp x1 When the outdoor temperature is equal or less than this value the boiler setpoint will be set to t...

Page 32: ...name to Outdoor Sensor by selecting a different sensor then reselecting the S5 J8 11 sensor 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 20 REMOTE SETPOINT 4 20 MA CONFIGURE SENSOR CONFIGURATION Sensor S2 J8 6 sensor Connector type 4 20mA SAFETY VERIFICATIO...

Page 33: ...etpoint when boiler is turned off 2 F to 5 F On hysteresis Differential from setpoint when boiler is turned on 2 F to 30 F 4 mA water temperature 50 F to 190 F 20 mA water temperature 50 F to 190 F Figure 38 Central Heat Configuration Modulation Page Modulation sensor Outlet sensor Inlet sensor S5 J8 11 Modulation Rate Source Local P gain Gain applied for the P portion of the PID equation 0 400 I ...

Page 34: ... Revision 0 Form 2396 Decibel Readings Model Front Rear Tube Side Right Side TF150 55 5 58 0 59 5 58 5 TF200 62 1 65 1 66 3 65 4 TF250 77 7 82 8 82 7 82 8 TF300 77 7 82 8 82 7 82 8 28 Table 6 Sound Pressure Readings ...

Page 35: ...y group verification table was restored from factory defaults 15 Safety group verification table was updated 16 Invalid Parameter PCB was detected 17 Invalid Range PCB was detected 18 Alarm silence time exceeded maximum 19 Invalid safety group verification table was detected 20 26 RESERVED 27 Safety processor was reset 28 Application processor was reset 29 Burner switch was turned OFF 30 Burner sw...

Page 36: ... value was invalid 95 Slow start degrees value was invalid 96 Slow start was ended due to outlet sensor fault 97 Slow start was end due to reference setpoint fault 98 CH max modulation rate was invalid vs RPM 99 CH max modulation rate was absolute max rate 100 CH modulation range max minus min was too small 4 or 40 RPM 101 DHW max modulation rate was invalid vs RPM 102 DHW max modulation rate was ...

Page 37: ...alid 188 Lead Lag slave enable was invalid 189 Lead Lag hysteresis step time was invalid 190 203 RESERVED 204 Lead Lag master was suspended due to fault 205 Lead Lag slave was suspended due to fault 206 Lead Lag header temperature was invalid 207 Lead Lag was suspended due to no enabled Program Module installed 208 Lead Lag slave session has timed out 209 221 RESERVED 222 CH frost protection tempe...

Page 38: ...r flow switch was off during Drive to Purge Rate 297 Abnormal Recycle Interrupted air flow switch was off during Measured Purge Time 298 Abnormal Recycle Interrupted air flow switch was off during Drive to Lightoff Rate 299 Abnormal Recycle Interrupted air flow switch was off during Pre Ignition test 300 Abnormal Recycle Interrupted air flow switch was off during Pre Ignition time 301 Abnormal Rec...

Page 39: ...Hardware HFS LCI shorted 350 Abnormal Recycle Hardware HFS LFS shorted 351 Abnormal Recycle Invalid zero crossing 352 Abnormal Recycle fault stack sensor 353 Abnormal Recycle stack limit 354 Abnormal Recycle delta T limit 355 Abnormal Recycle fault outlet sensor 356 Abnormal Recycle outlet high limit 357 Abnormal Recycle fault DHW sensor 358 Abnormal Recycle DHW high limit 359 Abnormal Recycle fau...

Page 40: ...y key bit 3 was incorrect 482 Internal error Safety key bit 4 was incorrect 483 Internal error Safety key bit 5 was incorrect 484 Internal error Safety key bit 6 was incorrect 485 Internal error Safety key bit 7 was incorrect 486 Internal error Safety key bit 8 was incorrect 487 Internal error Safety key bit 9 was incorrect 488 Internal error Safety key bit 10 was incorrect 489 Internal error Safe...

Page 41: ...wnstream of the furnace section The gas side pressure is the difference between the pressure upstream and downstream of the gas limiting orifice valve For the locations of the gas and air connections see Figure 39 Air to gas ratios are adjusted with the gas limiting orifice valve Figure 7 item 26 During the burner pre purge period when the gas valve is closed only the air pressure difference acts ...

Page 42: ... water the burner state will display driving to purge When the fan speed is within 3 of the firing rate for 3 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 o...

Page 43: ...the maximum modulation rate paragraph 2 2 13 is reached For each 500 rpm increment observe combustion readings and make adjustments to the gas limiting orifice Figure 7 item 26 if the O2 is not within 6 to 10 Final adjustments 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 paragra...

Page 44: ...the cubic feet per hour throughput of the unit seconds in time g clocked V gas of 3600 c c 1 3 ft hr ft CFH g V CFH c c To obtain the Btu per hour throughput of the unit use the following formula 3 ft Btu in fuel of value heating v v h h CFH Q If the meter is not calibrated for gas temperature and pressure correction factors must be applied to determine correct rate in SCFH standard cubic feet per...

Page 45: ...y parameters need verification and a device needs reset to complete verification 2 Configuration ended without verification re enter configuration verify safety parameters and reset device to complete verification 3 If fault repeats replace module L 3 Internal fault Hardware fault H 4 Internal fault Safety Relay key feedback error H 5 Internal fault Unstable power DCDC output H 6 Internal fault In...

Page 46: ...l fault Flame ripple and overflow H 21 Internal fault Flame number of sample mismatch H 22 Internal fault Flame bias out of range H 23 Internal fault Bias changed since heating cycle starts H 24 Internal fault Spark voltage stuck low or high H 25 Internal fault Spark voltage changed too much during flame sensing time H 26 Internal fault Static flame ripple H 27 Internal fault Flame rod shorted to ...

Page 47: ... Reset Module 2 If fault repeats replace module L 61 Anti short cycle H 62 Fan speed not proved Will not be a lockout fault Hold Only H 63 LCI OFF 1 Check wiring and correct any faults 2 Check Interlocks connected to the LCI to assure proper function 3 Reset and sequence the module monitor the LCI status 4 If code persists replace the module H 64 PII OFF 1 Check wiring and correct any faults 2 Che...

Page 48: ...t 1 Check wiring and correct any possible errors 2 Replace the DHW high limit 3 If previous steps are correct and fault persists replace the module H or L 81 Delta T limit 1 Check Inlet and Outlet sensors and pump circuits for proper operation 2 Recheck the Delta T Limit to confirm proper setting 3 If previous steps are correct and fault persists replace the module H or L 82 Stack limit 1 Check wi...

Page 49: ...ake sure that the flame detector is wired to the correct terminal 3 Make sure the F G wires are protected from stray noise pickup 4 Reset and sequence the module if code reappears replace the flame detector 5 Reset and sequence the module if code reappears replace the module H or L 106 Flame lost in MFEP L 107 Flame lost early in run L 108 Flame lost in run L 109 Ignition failed 1 Check pilot valv...

Page 50: ...n H 133 135 RESERVED 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 136 Interrupted Airflow Switch failed to close 1 Check wiring and correct any possible wiring errors 2 Check Interrupted Airflow switch es to assure proper function 3 Verify voltage through the airflow switch to the IAS input ...

Page 51: ...rect any errors 3 Inspect the Purge Fan switch J6 terminal 3 and its connections Make sure the switch is working correctly and is not jumpered or welded 4 Reset and sequence the relay module 5 If the fault persists replace the relay module H or L 156 Combustion pressure and Flame ON H or L 157 Combustion pressure and Flame OFF OEM Specific 1 Check that flame is not present in the combustion chambe...

Page 52: ...Pilot relay ON at safe start check L 178 Safety relay ON at safe start check Internal Fault 1 Reset Module 2 If fault repeats replace module L 179 183 RESERVED 184 Invalid BLOWER HSI output setting L 185 Invalid Delta T limit enable setting L 186 Invalid Delta T limit response setting L 187 Invalid DHW high limit enable setting L 188 Invalid DHW high limit response setting L 189 Invalid Flame sens...

Page 53: ...response setting L 204 Invalid NTC sensor type setting L 205 Invalid Outlet high limit response setting L 206 Invalid Pilot Flame Establishing Period setting L 207 Invalid PII enable setting L 208 Invalid pilot test hold setting L 209 Invalid Pilot type setting L 210 Invalid Postpurge time setting L 211 Invalid Power up with lockout setting L 212 Invalid Preignition time setting L 213 Invalid Prep...

Page 54: ...tlet high limit setpoint setting L 227 Invalid DHW high limit setpoint setting L 228 Invalid Stack limit setpoint setting L 229 Invalid Modulation output setting L 230 Invalid CH demand source setting L 231 Invalid Delta T limit delay setting L 232 Invalid Pressure sensor type setting L 233 Invalid IAS closed response setting L 234 Invalid Outlet high limit enable setting L 235 Invalid Outlet conn...

Page 55: ...Date 8 4 2010 Revision 0 Form 2396 49 Code Description Recommended Troubleshooting of Lockout Codes Code 241 255 RESERVED ...

Page 56: ...Date 8 4 2010 Revision 0 Form 2396 50 Section 3 Care and Maintenance ...

Page 57: ...bling the odorant used in natural gas It is important to keep these fumes from air intakes that would distribute them throughout the building 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 Be certain the chemic...

Page 58: ...connection to the tank Install a strainer in the boiler return piping 3 3 BOILER WATER TREATMENT Purpose of water treatment Water treatment is required for satisfactory operation of the boiler It must be devised to prevent depositing of scale and corrosion from acids oxygen and other such harmful elements that may be in the water supply A qualified water treatment chemist should be consulted and t...

Page 59: ...lso inspect the interior of the flue collector Brush or vacuum the soot from all surfaces Be sure to cover Triple Flex burner with a protective cover during cleaning to prevent soot from falling onto it If the buildup of soot is appreciable the flue gas venting system must be thoroughly inspected internally as well and cleaned as necessary WARNING If soot or condensation is apparent a boiler servi...

Page 60: ...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 54 3 The boiler pressure vessel and piping should be checked annually ...

Page 61: ...Date 8 4 2010 Revision 0 Form 2396 55 Section 4 Lead Lag ...

Page 62: ...tage 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 The LL master PID operates using a percent rate that is 0 is ...

Page 63: ...ing Lead boiler The Lead boiler is the Sola that is the first stage to fire among those stages which are in the equalize runtime Lead Lag group If a boiler is in the Use first group it may fire before the Lead boiler fires First boiler A Sola may be assigned to any of 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 wi...

Page 64: ...Date 8 4 2010 Revision 0 Form 2396 4 3 SYSTEM WIRING HOOKUP Figure 40 LL Multi Boiler Field Wiring 58 ...

Page 65: ...figurable actions 1 Disable No backup will 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 When burner demand is off and no bur...

Page 66: ...ve changes relate to pump control frost protection and also are available to 3rd party non Sola LL master devices The generic LL slave is updated to operate as shown by the diagram below Frost protection requests The frost protection in this status register will be set or cleared to match the status generated by the frost protection detection functions Firing for local frost protection This provid...

Page 67: ...bdivided into the following functions Overall control The LL master has 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 Slave control the LL master sends each active slave a command and also performs a slave status read for each kn...

Page 68: ...ff in standby This message is used to abort the startup of a slave that is not yet firing because demand went away just before it was firing but to keep it on if it actually is firing the LL master will 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...

Page 69: ...is stored in an empty position in the table However if the slave is in the table then the message is stored as usual this is the normal case INVALID RESPONSE OR NO RESPONSE When a Sola responds to a data poll with an improperly formatted message or it does not respond then the slave status table is checked and If the polled slave device is in the table then the Data Poll Fault is noted If this cau...

Page 70: ... becomes false When warm weather shutdown is true then New occurrences of CH demand is inhibited DHW demand is not affected Frost protection LL master frost protection is enabled with Frost protection enable Disable Enable The need for frost protection is actually detected independently by each slave which notifies the master whether frost detection occurred in CH frost detection and or its DHW fr...

Page 71: ...individual definitions Modulation Each demand source has one or more setpoints that may be active and an operation sensor 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 4 7 5 MODULATION SENSOR LL MODULATION SENSOR S5 The LL master s modulation sensor uses the S5 sensor connector J8 terminal 11 and ...

Page 72: ...ture degrees or None LL CH ODR boost time mm ss or None LL CH ODR boost max setpoint degrees or None LL CH ODR boost step degrees or None LL CH ODR boost recovery step time mm ss or None 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 If the outdoor temperature is invalid and unknown then no ...

Page 73: ...h might include excess Whenever the rate allocator completes an execution pass and detects that both conditions of step 1 are no longer true demand has decreased then it clears the flag Whenever the rate allocator completes an execution pass and detects both conditions of step 1 are true and it also detects that the total rate potentially absorbed by the system the commands have not yet been sent ...

Page 74: ...the same value without having to set each slave Some rate allocation algorithms may specify the use of this parameter and that the slave base load settings are ignored RATE ALLOCATION METHOD PARALLEL COMMONBASE LIMITED This selects the rate allocation method This performs three purposes it determines how the LL master allocates firing rate to each active stage the modulating stage and last stage a...

Page 75: ...ow threshold Stager The Stager is an internal program that determines when slave Solas should turn on as the need for heat increases and when they should turn off as the need for heat decreases In all cases The first burner turns on due to the combination of heat demand call for heat and setpoint demand operating point falls below the setpoint minus the on hysteresis The last burner or all burners...

Page 76: ...es the StagerState to InterstageDelay If the boiler s SlaveState is still AddStage then The stager checks to see if the StagerTimer has reached the StagerTimeLimit 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 STAGERSTATE ADDSTAGESUSP...

Page 77: ...he 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 RATE THRESHOLD For rate based staging a stage is added based on the rate of the modulating stage ADD STAGE CONDITION The modulating burner is at a...

Page 78: ...ue then DropStageDetectTimerN is not zeroed and thus allowed to run If this timer reaches or exceeds Dropstage detection timeN then DropStageRequestN is true RATE THRESHOLD For rate based staging a stage is dropped based on the rate of the last stage DROP STAGE CONDITION The modulating burner s is at a rate that is at or below the minimum modulation rate plus a rate offset Examples rate offset 20 ...

Page 79: ...bove are considered by the method in this case the operating point temperature Thus dropping the lead does not depend on exceeding this temperature for a period of time nor does it require the lead to be at minimum modulation rate When LDSE is enabled and the lead is firing solo then simply reaching the drop stage threshold causes a dropstage event that causes the lead to turn off and rf3259 which...

Page 80: ...um is incremented and then new lead boiler is the one that is a slave in Equalize Runtime mode that is responding to the LL master i e not OnLeave or Recovering but it might be Firing and has a sequence number equal to LeadBoilerSeqNum or If no boiler has this then the closest one with a sequence number greater than this number is used or If no boiler has a greater sequence number then the one tha...

Page 81: ... MODE USE FIRST EQUALIZE RUNTIME USE LAST If set to Use First then this slave Sola will be used prior to using other slave Solas with other values If this parameter is set to Equalize Runtime then this slave Sola will be staged according to a run time equalization Any Solas set to Use First will precede any that are set to Equalize Runtime If this parameter is set to Use Last then this slave Sola ...

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