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Benchmark 750-3000 Boiler Installation & Startup Manual

SECTION 4 – INITIAL START-UP

OMM-0121_D

•

GF-205

•

5/9/2019

Technical Support

•

(800) 526-0288

•

Mon-Fri, 8 am - 5 pm EST Page 71 of 122

4.5 REASSEMBLY

Once the combustion calibration adjustments are properly set, the unit can be reassembled for
service operation.

Reassembly Instructions

1. Set the ON/OFF switch in the

OFF

position.

2. Disconnect AC power from the unit.

3. Shut off the gas supply to the unit.

4. Remove the manometer and barbed fittings and reinstall the NPT plug using a suitable

pipe thread compound.

5. Remove the combustion analyzer probe from the 1/4” vent hole in the exhaust manifold

and then replace the 1/4” NPT plug in the vent hole.

6. Replace all previously removed sheet metal enclosures on the unit.

This concludes reassembly of the unit after combustion calibration.

4.6 DUAL FUEL SWITCHOVER

Dual Fuel models contain a fuel selector switch, located on the Temperature Limit panel. The
location of this panel on BMK 1500 – 3000 units is shown in Figure 4-5, below; for the location
of this panel on BMK 750 and 1000 units see Figure 4-6a in Section 4.7.

Instructions for switching from one fuel to the other are in Sections 4.6.1 and 4.6.2.

PARTIAL FRONT VIEW WITH FRONT COVER REMOVED

Figure 4-5: Dual Fuel Switch Location – BMK 1500-3000 Shown

FUEL SELECTOR

SWITCH

C-MORE
CONTROLLER

«
...
69
70
71
72
73
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»

Содержание Benchmark Aerco OMM-0122

Страница 1: ...hmark Power Guide Applies to serial number G 19 0001 and above Disclaimer The information contained in this manual is subject to change without notice from AERCO International Inc AERCO makes no warra...

Страница 2: ...0 1000 Supply and Return Piping 21 2 6 2 BMK 1500 3000 Supply and Return Piping 21 2 7 PRESSURE RELIEF VALVE INSTALLATION 23 2 8 CONDENSATE DRAIN AND PIPING 24 2 9 GAS SUPPLY PIPING 26 2 9 1 Gas Suppl...

Страница 3: ...REQUIREMENTS 57 4 2 TOOLS INSTRUMENTS FOR COMBUSTION CALIBRATION 57 4 2 1 Required Tools Instrumentation 57 4 2 2 Installing Gas Supply Manometer 58 4 2 3 Accessing the Analyzer Probe Port 60 4 3 FUE...

Страница 4: ...ICK START CHART 100 6 3 BST IMPLEMENTATION INSTRUCTION 101 6 3 1 OPTION 1 Constant Setpoint With Direct Wired Header Sensor 101 6 3 2 OPTION 2 Constant Setpoint With Modbus Wired Header Sensor 102 6 3...

Страница 5: ...29 3 kW 2 000 000 586 kW 86 000 25 2 kW 1 860 000 545 kW BMK 2500 167 000 48 9 kW 2 500 000 732 kW 144 000 42 2 kW 2 395 000 702 kW BMK 3000 200 000 58 6 kW 3 000 000 879 kW 174 000 51 0 kW 2 874 000...

Страница 6: ...anagement Systems BLDG Bldg Building BST AERCO on board Boiler Sequencing Technology BTU British Thermal Unit A unit of energy approximately equal to the heat required to raise 1 pound 0 45 kg of wate...

Страница 7: ...ducts IP Internet Protocol ISO International Organization for Standardization Lbs Pounds 1 lb 0 45 kg LED Light Emitting Diode LN Low Nitrogen Oxide MA mA Milliampere 1 thousandth of an ampere MAX Max...

Страница 8: ...x FDX transmission of data based on the RS422 Standard RS485 or EIA 485 A standard for serial half duplex HDX transmission of data based on the RS485 Standard RTN Rtn Return SETPT Setpt Setpoint Tempe...

Страница 9: ...e installer and kept in a safe place for future reference WARNING Do not use matches candles flames or other sources of ignition to check for gas leaks Fluids under pressure may cause injury to person...

Страница 10: ...boilers in a location other than a boiler room provide a manually operated remote shutdown switch or circuit breaker marked for easy identification at a location readily accessible in the event of bo...

Страница 11: ...d on the floor level where the gas equipment is to be installed In addition the installing plumber or gasfitter shall observe that a battery operated or hard wired carbon monoxide detector with an ala...

Страница 12: ...ign or venting system components with the equipment the instructions provided by the manufacturer for installation of the equipment and the venting system shall include 1 Detailed instructions for the...

Страница 13: ...t from the FRONT ONLY NOTE AERCO is not responsible for lost or damaged freight Each unit has a Tip N Tell indicator on the outside of the crate This indicates if the unit has been turned on its side...

Страница 14: ...ted below for all models However if Local Building Codes require additional clearances these codes shall supersede AERCO s requirements The minimum acceptable clearances required are as follows Sides...

Страница 15: ...2019 Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 15 of 122 Figure 2 1a BMK 750 1000 Clearances Figure 2 1b BMK 1500 2000 Clearances NOTE Ensure that condensate assembly is not located o...

Страница 16: ...clear and free from all combustible materials and flammable vapors or liquids FOR MASSACHUSETTS ONLY For Massachusetts installations the unit must be installed by a plumber or gas fitter licensed wit...

Страница 17: ...el housekeeping pad to ensure proper condensate drainage The pad thickness must be BMK 750 1000 4 to 6 inch 10 2 to 15 2 cm BMK 1500 3000 4 to 8 inch 10 2 to 20 3 cm If anchoring the unit refer to Fig...

Страница 18: ...LATION OMM 0121_D GF 205 5 9 2019 Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 18 of 122 NOTES All holes are flush with the bottom surface of the frame All dimensions shown are in inches...

Страница 19: ...ed below WARNING When using the lifting tab and bar ensure there is no load placed on the gas train or blower Attaching the Lifting Bar BMK 750 1000 Instructions 1 Remove the lifting bar from its ship...

Страница 20: ...at exchanger as shown in Figure 2 3b Remove the front top panel from the unit to provide access to the lifting lugs Remove the four 4 lag screws securing the unit to the shipping skid Lift the unit of...

Страница 21: ...clean AERCO recommends using Loctite 7649 to prime the mating surfaces and then Loctite 567 as pipe dope Do NOT use Teflon tape Figure 2 4a BMK 750 1000 Supply and Return Locations 2 6 2 BMK 1500 3000...

Страница 22: ...9 2019 Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 22 of 122 Figure 2 4b BMK 1500 2000 and BMK 2500 3000 Supply and Return Locations CONDENSATE DRAIN EXHAUST MANIFOLD BMK 1500 2000 BMK...

Страница 23: ...be used on the threaded connections Any excess should be wiped off to avoid getting any joint compound into the valve body The relief valve must be piped to within 12 inches 30 5 cm of the floor to pr...

Страница 24: ...t must be level with or lower than the exhaust manifold drain port The base of the condensate trap must be supported to ensure that it is level horizontal The trap must be removable for routine mainte...

Страница 25: ...TRAP P N 24441 1 DIAM HOSE NOTE HOUSEKEEPING PAD MUST NOT EXTEND UNDER THE CONDENSATE ASSEMBLY 3 4 NPT NIPPLES UNION EXHAUST MANIFOLD T O FLOOR DRAIN TRAP INLET INTEGRAL ADAPTOR AND THUMBSCREW TOP COV...

Страница 26: ...ar of the unit Benchmark 1500 2000 2500 3000 Features a 2 inch 5 08 cm NATURAL GAS gas inlet connection on the top of the unit Benchmark 1500P 2000P 2500P and 3000P Propane Features a 1 inch 2 54 cm P...

Страница 27: ...ure to the unit must be sufficient to provide the volume of gas while maintaining gas pressure listed below while operating at maximum capacity TABLE 2 2 Minimum Gas Pressure Requirements Model Natura...

Страница 28: ...1 0 kPa BMK 2500 3000 150 000 3 180 000 44 932 4 0 W C 1 0 kPa A lock up style regulator MUST be used when gas supply pressure will exceed 14 W C 3 49 kPa 2 9 3 1 Massachusetts Installations Only For...

Страница 29: ...526 0288 Mon Fri 8 am 5 pm EST Page 29 of 122 Figure 2 7a BMK 750 1000 Manual Gas Shut Off Valve and Gas Regulator Figure 2 7b BMK 1500 3000 Manual Gas Shut Off Valve and Gas Regulator 1 MANUAL SHUTO...

Страница 30: ...must be installed on the electrical supply line in an easily accessible location to quickly and safely disconnect electrical service DO NOT attach the switch to sheet metal enclosures of the unit Afte...

Страница 31: ...de the Power Box on the front of the unit Remove the front panel to access the Power Box which is mounted in the upper part of the unit as shown in Figure 2 8a and 2 8b The internal connections inside...

Страница 32: ...gure 2 9a 2 9b and 2 9c does NOT remove power from the terminal blocks Figure 2 9a BMK 750 1000 Power Box Internal Components Figure 2 9b BMK 1500 2000 Power Box Internal Components 12V POWER SUPPLY F...

Страница 33: ...exception of the transformer shown in Figure 2 9a 2 9b and 2 9c all of the components in the Power Box are mounted on a DIN rail All electrical conduit and hardware must be installed so that it does...

Страница 34: ...assembly of the unit The location of the I O board is shown in Figure 2 10 The I O board terminal strip connections are shown in Figure 2 11 All field wiring is installed from the rear of the panel b...

Страница 35: ...nable disable feature which allows the boiler to be enabled or disabled based on the outdoor air temperature The factory default for the outdoor sensor is DISABLED To enable the sensor and or select a...

Страница 36: ...up to three ignition cycles If the current is insufficient by the third try the controller will shut down and display a fault message 2 11 5 ANALOG IN The two ANALOG IN terminals and are used when an...

Страница 37: ...ore Controller is Valve Position 0 10v and behaves as follows 0 10VDC must be selected for the voltage output used by the Controller to modulate the combustion blower via the I O Box terminals labeled...

Страница 38: ...located in the purge section of the start string It can be connected to the proving device end switch flow switch etc of an auxiliary piece of equipment started by the unit s auxiliary relay If the d...

Страница 39: ...et 42 7m or 0 8 W C 199 Pa Fittings as well as pipe lengths must be calculated as part of the equivalent length For a natural draft installation the draft must not exceed 0 25 W C 62 Pa These factors...

Страница 40: ...s see section 2 13 1 below If combustion air is not supplied through air ducts it must be supplied to the unit s through two permanent openings These two openings must have a free area of not less th...

Страница 41: ...ose a motorized valve as the boiler cycles on and off on demand The Pump Delay Timer feature allows the user to keep the pump running and keep the motorized valve open for up to 30 minutes after the b...

Страница 42: ...the entire boiler array is maximized When operated with the BST system the Manager controls its own isolation valve and sends signals to the Client units to open or close their isolation valves After...

Страница 43: ...intenance Guide OMM 0122 GF 206 Sequencing Isolation Valve Installation Instructions 1 Install the sequencing isolation valve in the boiler s hot water outlet pipe Figure 2 15 Figure 2 15 Sequencing I...

Страница 44: ...enchmark 750 3000 Boiler Installation Startup Manual SECTION 2 INSTALLATION OMM 0121_D GF 205 5 9 2019 Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 44 of 122 This page intentionally blank...

Страница 45: ...it without a full water level can seriously damage the unit and may result in injury to personnel or property damage This situation will void any warranty CAUTION All of the installation procedures in...

Страница 46: ...tatus indicator will light 2 The unit checks to ensure that the Proof of Closure POC switch in the downstream Safety Shut Off Valve SSOV is closed See Figure 3 1a through 3 1d for SSOV location Figure...

Страница 47: ...iated and the following events will occur a The Blower relay energizes and turns on the blower b The Air Fuel Valve rotates to the full open purge position and closes purge position switch The dial on...

Страница 48: ...Figure 3 2a BMK 750 1000 Air Fuel Valve in Purge Position Figure 3 2b BMK 1500 3000 Air Fuel Valve In Purge Position 4 Next the blower proof switch on the Air Fuel Valve Figure 3 3a and 3 3b closes Th...

Страница 49: ...ompletion of the purge cycle the C More Controller initiates an ignition cycle and the following events occur a The Air Fuel Valve rotates to the low fire Ignition Position position and closes the ign...

Страница 50: ...to the IGNITION TRIAL the C More Controller will abort the Ignition Cycle and shut down the boiler Refer to Section 5 Troubleshooting Guide in the Benchmark 750 3000 Operation and Maintenance Guide OM...

Страница 51: ...oad These levels are Factory preset as follows TABLE 3 1a Start Stop Levels NATURAL GAS BMK 750 BMK 1000 BMK 1500 BMK 2000 BMK 2500 BMK 3000 Start Level 22 22 24 24 24 20 Stop Level 18 18 16 18 16 14...

Страница 52: ...40 246 000 72 1 kW 297 000 87 0 kW 33 30 50 369 000 108 1 kW 443 000 126 9 kW 49 44 60 465 000 136 3 kW 564 000 165 3 kW 62 56 70 554 000 162 4 kW 660 000 193 4 kW 74 66 80 637 000 186 7 kW 789 000 2...

Страница 53: ...Stop Level 76 000 22 3 kW 5 0 20 127 000 37 2 kW 8 5 30 366 000 107 2 kW 24 4 40 629 000 184 3 kW 41 9 50 822 000 240 9 kW 54 7 60 977 000 286 2 kW 65 0 70 1 119 000 327 9 kW 74 5 80 1 255 000 367 7 k...

Страница 54: ...8 Stop Level 100 000 29 3 kW 5 7 20 143 000 41 9 kW 11 30 388 000 113 7 kW 23 40 759 000 222 4 kW 37 50 1 069 000 313 2 kW 51 60 1 283 000 375 9 kW 61 70 1 476 000 432 5 kW 74 80 1 675 000 490 1 kW 83...

Страница 55: ...NERGY INPUT OF FULL CAPACITY 16 Stop Level 167 000 48 9 kW 6 7 30 430 000 126 0 kW 17 40 770 000 225 7 kW 31 50 1 070 000 422 0 kW 43 60 1 440 000 422 0 kW 58 70 1 815 000 531 9 kW 73 80 2 030 000 594...

Страница 56: ...ENERGY INPUT OF FULL CAPACITY 14 Stop Level 200 000 58 6 kW 6 7 30 520 000 152 kW 17 40 880 000 258 kW 29 50 1 270 000 372 kW 42 60 1 680 000 492 kW 56 70 2 100 000 615 kW 70 80 2 390 000 700 kW 80 9...

Страница 57: ...AERCO factory trained start up and service personnel After performing the start up procedures below it will be necessary to perform the procedures in Section 5 Safety Device Testing below to complete...

Страница 58: ...eam side of the SSOV during Combustion Calibration in Section 4 4 below install the 16 W C 4 0 kPa manometer s as described in the following steps Gas Supply Manometer Installation Instructions 1 Turn...

Страница 59: ...c BMK 2500 1 4 Inch Gas Plug Location NATURAL GAS INLET SSOV TO AIR FUEL VALVE LEAK DETECTION BALL VALVE 1 4 NPT PLUG Install manometer here for Combustion Calibration HIGH GAS PRESSURE SWITCH LOW GAS...

Страница 60: ...4 2a and 4 2b Prepare the port for the combustion analyzer probe as follows Analyzer Probe Port Access Instructions 1 Refer to Figure 4 2a or 4 2b and remove the 1 4 NPT plug from the exhaust manifold...

Страница 61: ...e installer operator to switch between natural gas and propane gas onsite as needed Both fuel types require different combustion calibration values and so care should be taken to ensure the appropriat...

Страница 62: ...art of initial start up is necessary due to changes in the local altitude gas BTU content gas supply piping and supply regulators Combustion Calibration Test Data sheets are shipped with each unit The...

Страница 63: ...eter is attached and functioning properly 9 Set the ON OFF switch to the ON position 10 Press the MENU key on the front panel of the C More Controller until COMBUSTION CAL MENU appears on the display...

Страница 64: ...e that the nitrogen oxide NOx and carbon monoxide CO readings do not exceed the values shown in Table 4 2 If your target NOx value is 9 ppm or less use the values in the Ultra Low NOx columns If you a...

Страница 65: ...e combustion calibration control functions will be used to adjust the oxygen level at valve position percentages described in the steps below These instructions assume that the inlet air temperature i...

Страница 66: ...6 2 0 2 20 ppm 100 ppm 40 6 3 0 2 30 6 0 0 2 20 ppm 50 ppm 30 6 3 0 2 20 5 8 0 2 20 ppm 50 ppm 16 6 0 0 2 16 6 0 0 2 20 ppm 50 ppm BMK 3000 70 5 1 0 2 85 5 4 0 2 20 ppm 100 ppm 50 6 1 0 2 65 5 5 0 2 2...

Страница 67: ...Press the MENU key on the front panel of the C More Controller until COMBUSTION CAL MENU appears on the display 11 Press the Up arrow key until SET Stdby V Out Standby Voltage setting appears Verify t...

Страница 68: ...e CO 750 1000 5 5 0 5 100 ppm 150 ppm 1500 2000 4 5 0 5 100 ppm 150 ppm 2500 5 0 0 4 100 ppm 150 ppm 3000 5 2 0 4 100 ppm 150 ppm 21 Next press the Down arrow key until CAL Voltage 100 is displayed 22...

Страница 69: ...level up to 1 higher than the listed calibration range Record the increased O2 value on the Combustion Calibration sheet 30 Repeat steps 21 through 25 for valve positions shown in Table 4 6 The oxygen...

Страница 70: ...ue designated as 16 NOTE If NOx readings exceed the target values in Table 4 6 increase the O2 level up to 1 higher than the listed calibration range shown in the table Record the increased O2 value o...

Страница 71: ...combustion analyzer probe from the 1 4 vent hole in the exhaust manifold and then replace the 1 4 NPT plug in the vent hole 6 Replace all previously removed sheet metal enclosures on the unit This co...

Страница 72: ...ing the CLEAR key 7 Set the ON OFF switch on the C More Controller to the ON position 8 Press the MENU key once SETUP MENU will be displayed 9 Press the arrow key once PASSWORD will be displayed 10 Pr...

Страница 73: ...essing the CLEAR key 7 Apply AC power to the boiler 8 Press the MENU key once SETUP MENU will be displayed 9 Press the arrow key once PASSWORD will be displayed 10 Press the CHANGE key PASSWORD will b...

Страница 74: ...ted The adjustable Temperature Limit switch is manually adjustable from 32 F 212 F 0 C 100 C This switch allows the boiler to restart once the temperature drops below the selected temperature setting...

Страница 75: ...isplay 3 Press the SET button again The current over temperature limit value stored in memory will be displayed Default 210 F 98 9 C 4 If the display does not show the required over temperature alarm...

Страница 76: ...chmark 750 3000 Boiler Installation Startup Manual SECTION 4 INITIAL START UP OMM 0121_D GF 205 5 9 2019 Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 76 of 122 This page intentionally bla...

Страница 77: ...as designed Operating controls and safety devices should be tested on a regular basis or following service or replacement All testing must conform to local codes such as ASME CSD 1 NOTES MANUAL and AU...

Страница 78: ...just the Air Fuel Valve position open between 25 and 30 7 While the unit is firing slowly close the external manual gas shut off valve not shown 8 The unit should shut down and display a GAS PRESSURE...

Страница 79: ...Figure 5 1b BMK 1500 2000 LOW Gas Pressure Test Components SSOV GAS INLET TO AIR FUEL VALVE LOW GAS PRESSURE LEAK DETECTION BALL VALVE shown closed HIGH GAS PRESSURE SWITCH LOW GAS PRESSURE SWITCH MA...

Страница 80: ...ug shown in Figure 5 2 and install a hose barb fitting in that location 3 Attach one end of the plastic tubing to the port or barb fitting and the other end to a 16 W C 0 4 0 kPa manometer 4 Apply the...

Страница 81: ...ppm 10 Take a reading of the inlet gas pressure If the inlet pressure is below the minimum calculated in step 4 above then increase the pressure to match the calculated minimum 11 Slowly turn the ind...

Страница 82: ...manometer installed in step 2 and record the gas pressure reading 8 Slowly increase the gas pressure using the adjustment screw on the SSOV while counting the number of turns you make 9 The FAULT ind...

Страница 83: ...on test completion close the ball valve and remove the manometer Replace the 1 4 NPT plug removed in step 2 Figure 5 3a BMK 750 1000 HIGH Gas Pressure Test Components Figure 5 3b BMK 1500 2000 HIGH Ga...

Страница 84: ...of the plastic tubing to the port or barb fitting and the other end to a 0 16 W C 0 4 0 kPa manometer 3 Apply the reading of the manifold pressure taken in Step 15 of section 4 4 1 natural gas units...

Страница 85: ...s Pressure Adjustment Screw to decrease the manifold pressure until it is at the maximum allowed 10 Press the RESET button on the High Gas Pressure switch see Figure 5 4 below 11 Slowly turn the indic...

Страница 86: ...fault message is displayed and the FAULT indicator flashes 5 Place the unit in the MANUAL mode and raise the valve position above 30 6 Set the ON OFF switch to the ON position The READY light should...

Страница 87: ...rature switch setting to match the displayed OUTLET TEMPERATURE 3 Once the adjustable Over Temperature switch setting is approximately at or just below the actual outlet water temperature the unit sho...

Страница 88: ...pport 800 526 0288 Mon Fri 8 am 5 pm EST Page 88 of 122 Water Temperature Fault Test Instructions Figure 5 5b Temperature Limit Switch Location BMK 750 1000 Digital Over Temperature Limit Controller R...

Страница 89: ...position between 25 and 30 3 If there is a jumper across the REMOTE INTL K IN terminals remove one side of the jumper If the interlock is being controlled by an external device either open the interlo...

Страница 90: ...ay FLAME LOSS DURING IGN 7 Open the valve previously closed in step 3 and press the CLEAR button 8 Restart the unit and allow it to prove flame 9 Once flame is proven close the manual gas valve locate...

Страница 91: ...BLOCKED INLET SWITCHES These tests check the operation of the Blower Proof switch and Blocked Inlet switch shown in Figure 5 6a and 5 6b 5 8 1 Blower Proof Switch Test Figure 5 6a Bare Boiler Partial...

Страница 92: ...e switch setting indicator dial 0 3 in the Figure below COVER WITH LABEL COVER REMOVED Figure 5 7 Blower Proof Switch 4 Set the Controller s On Off switch to On and wait for the boiler to go into the...

Страница 93: ...ligator clip away from bare metal parts until step 4c 4 Complete the following with the boiler operating in MANUAL mode a Ramp the boiler up to 100 fire rate and then turn the main ON OFF switch on th...

Страница 94: ...it should fault and display SSOV SWITCH OPEN 7 Replace wire 148 and press the CLEAR button 8 Set the ON OFF switch to the ON position to start the unit 9 Remove the wire again when the unit reaches th...

Страница 95: ...in its start sequence then shut down and display PRG SWITCH OPEN DURING PURGE 7 Replace the wire on the Purge switch and depress the CLEAR button The unit should restart Figure 5 10a Air Fuel Valve Co...

Страница 96: ...Purge Switch Open During Purge Check Instructions Figure 5 11a Air Fuel Purge and Ignition Locations BMK 1500 3000 Figure 5 11b Air Fuel Purge and Ignition Locations BMK 750 1000 Purge Position Switch...

Страница 97: ...MANUAL mode and set the valve position between 25 and 30 3 Remove the Air Fuel Valve cover Figure 5 10a or 5 10b above by rotating the cover counterclockwise to unlock and lift up to remove 4 Remove o...

Страница 98: ...mark 750 3000 Boiler Installation Startup Manual SECTION 5 SAFETY DEVICE TESTING OMM 0121_D GF 205 5 9 2019 Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 98 of 122 This page intentionally...

Страница 99: ...One unit the BST network is defined as the Manager unit and all other units on the network are defined as Client units The Manager monitors the system Header Temperature and also monitors all Client...

Страница 100: ...orking properly as a BST system install the ProtoNode device f Make sure that the Modbus load and bias resistors are properly configured for the system to operate with the ProtoNode installed g Set th...

Страница 101: ...he plant s supply water header Shielded pair 18 22 AWG cable is recommended for header sensor wiring There is no polarity to be observed The ground for the shield is at the SHLD terminal in the I O th...

Страница 102: ...for the shield is at the SHLD terminal in the I O the Box The header sensor must be installed between 2 and 10 feet 0 61 and 3 1m downstream of the LAST boiler in the plant s supply water header There...

Страница 103: ...ream of the LAST boiler in the plant s supply water header Shielded pair 18 22 AWG cable is recommended for header sensor wiring There is no polarity to be observed The ground for the shield is at the...

Страница 104: ...m to Enabled 2 Go to the Boiler Sequencing Menu and set the BST Mode item to BST Client for now On MANAGER only 3 Go to the BST Setpoint item and enter the Failsafe Setpoint 4 Go to the BST Setup Menu...

Страница 105: ...rature Transmitter 3 Install a jumper wire between pins 1 and 2 of the Temperature Transmitter NOTES Polarity must be observed for the RS485 connections The ground for the shield is at the SHLD termin...

Страница 106: ...t free and ungrounded Step 3 Configure ALL C More Units On ALL Boilers 1 Go to the Configuration menu and set the BST Menu item to Enabled 2 Go to the Boiler Sequencing Menu and set the BST Mode item...

Страница 107: ...on the P 1 Harness Via the terminal block labeled Header Temp sensor in the I O Box NOTES The header sensor must be installed between 2 and 10 feet 0 61 and 3 1m downstream of the LAST boiler in the...

Страница 108: ...d set the BST Menu item to Enabled 2 Go to the Boiler Sequencing Menu and set the BST Mode item to BST Client for now On MANAGER only 3 Go to the BST Setpoint item and enter the Failsafe Setpoint 4 Go...

Страница 109: ...he Temperature Transmitter 3 Install a jumper wire between pins 1 and 2 of the Temperature Transmitter NOTES Polarity must be observed for the RS485 connections The ground for the shield is at the SHL...

Страница 110: ...ft free and ungrounded Step 3 Configure ALL C More Units On ALL Boilers 1 Go to the Configuration menu and set the BST Menu item to Enabled 2 Go to the Boiler Sequencing Menu and set the BST Mode item...

Страница 111: ...nits 2 Using Shielded pair 18 22 AWG cable connect the Modbus Header Temperature Sensor P N 24410 to pins 2 and 3 of the Temperature Transmitter 3 Install a jumper wire between pins 1 and 2 of the Tem...

Страница 112: ...and set the BST Mode item to BST Client for now On MANAGER only 3 Go to the BST Setpoint item and enter the Failsafe Setpoint 4 Go to the BST Setup Menu item and set to Enabled 5 Go to the BST Setpoi...

Страница 113: ...ts and Pin A of the Temperature Transmitter to the RS485 terminal on the I O Box of any of the Boiler units 2 Using Shielded pair 18 22 AWG cable connect the Modbus Header Temperature Sensor P N 24410...

Страница 114: ...Menu and set the BST Mode item to BST Client for now On MANAGER only 3 Go to the BST Setpoint item and enter the failsafe Setpoint 4 Go to the BST Setup Menu item and set to Enabled 5 Go to the BST S...

Страница 115: ...E DRAWINGS OMM 0121_D GF 205 5 9 2019 Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 115 of 122 Appendix A Dimensional and Clearance Drawings Benchmark 750 1000 Dimension Drawing AP A 891 r...

Страница 116: ...allation Startup Manual APPENDIX A DIMENSIONAL AND CLEARANCE DRAWINGS OMM 0121_D GF 205 5 9 2019 Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 116 of 122 Benchmark 750 1000 Single Unit Cle...

Страница 117: ...tallation Startup Manual APPENDIX A DIMENSIONAL AND CLEARANCE DRAWINGS OMM 0121_D GF 205 5 9 2019 Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 117 of 122 Benchmark 750 1000 Zero Side Clea...

Страница 118: ...stallation Startup Manual APPENDIX A DIMENSIONAL AND CLEARANCE DRAWINGS OMM 0121_D GF 205 5 9 2019 Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 118 of 122 Benchmark 1500 2000 Dimension Dr...

Страница 119: ...stallation Startup Manual APPENDIX A DIMENSIONAL AND CLEARANCE DRAWINGS OMM 0121_D GF 205 5 9 2019 Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 119 of 122 Benchmark 1500 2000 Clearance Dr...

Страница 120: ...stallation Startup Manual APPENDIX A DIMENSIONAL AND CLEARANCE DRAWINGS OMM 0121_D GF 205 5 9 2019 Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 120 of 122 Benchmark 2500 3000 Dimension Dr...

Страница 121: ...stallation Startup Manual APPENDIX A DIMENSIONAL AND CLEARANCE DRAWINGS OMM 0121_D GF 205 5 9 2019 Technical Support 800 526 0288 Mon Fri 8 am 5 pm EST Page 121 of 122 Benchmark 2500 3000 Clearance Dr...

Страница 122: ...achusetts Section 2 12 1 DIR 18 55 Changed Air Inlet Temp Sensor part number from 61024 to 123449 in Section 2 11 2 Reference PIR 1542 DIR 18 61 Updated Blower Proof Switch Test Section 5 8 1 DIR 18 6...

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