Manuals - Lochinvar
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1. 13 Revision Notes Back Cover Hazard definitions The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product A DANGER a indicates an imminently hazardous situation which if not avoided will result in death or serious A WARNING a a potentially hazardous situation which if not avoided could result in death or A CAUTION CAUTION indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury CAUTION used without the safety alert symbol indicates a potentially hazardous situation which if not CAUTION avoided may result in property damage NOTICE NOTICE indicates special instructions on installation operation or maintenance that are important but not related to personal injury or property damage SENNA s Ys TEM Multi Temperature Loop Control Loop Control Board Instructions 1 Introduction The information contained in this manual provides installation and operation instructions for the addition of the Multi Temperature Loop Control Board in conjunction with the Lochinvar Knight KB N L 81 286 Knight XL KB N L 400 801 Wall Mount WB N L 51 211 WH N L 55 399 and FTXL FTX 400 850 boilers When connected on the Cascade commu2. The MTLCB communicates with the boiler s SMART SYSTEM control for operation of the mixing valves and loop pumps to regulate each loop temperature The power supply required for the MTLCB is 120 V 60 Hz at less than 12 amps 2 Loop Temperature Sensors The loop temperature sensors measure the temperature of each loop Each sensor should be placed on the discharge side of the loop pump as shown in FIG s 2 1 and 2 2 on pages 5 and 6 of this manual Use only the three 3 NTC thermistor sensors supplied Ifa replacement sensor is needed order Lochinvar part number TST2032 For the best reading the sensor should be securely fastened to the pipe and insulated 3 Mixing Valves Field supplied The MTLCB is designed to control 24 VAC floating 3 way mixing valves with open and close signals These valves have an actuator motor time from full open to full close The time in seconds must be consistent across all 3 way valves installed For information on programming the mixing valve time into the boiler reference Section 4 Boiler Parameter Setup For 3 way valve requirements reference Table 2A Action Type Table 2A 3 Way Valve Requirements 3 Way Valve Requirements tem Description Control Signal 3 Point Open Close Com Floating Modulating Loop Pumps Field supplied The MTLCB provides 120 VAC power to operate three 3 loop pumps The maximum current rating for each pump cannot exceed 1 8 amps EWN
3. SENSOR AIR SEPARATOR EXPANSION TANK MAY SUBSTITUTE oo LOW LOSS HEADER CIRCULATOR L FLOW CHECK BALL VALVE m VALVE TYPICAL L NOT TO EXCEED 4 PIPE DIA OR MAX OF 12 APART DRAIN POINT Y STRAINER MIXING VALVE TYPICAL RECOMMENDED BOILER COLD CIRCULATOR ae UNION TYPICAL DRAIN lt TEMPERATURE PRESSURE B GAUGE BOILER INDIRECT DHW TANK IMG00654 NOTICE Please note that these illustrations are meant to show system piping concept only the installer is responsible for all equipment and detailing required by local codes NOTICE A system supply sensor MUST BE installed for proper boiler operation to occur 3 Wiring Requirements A WARNING ELECTRICAL SHOCK HAZARD For your safety turn off electrical power supply before making any electrical connections to avoid possible electric shock hazard Failure to do so can cause severe personal injury or death NOTICE Wiring must be N E C Class 1 If original wiring as supplied with boiler must be replaced use only type 105 C wire or equivalent Boiler must be electrically grounded as required by National Electrical Code ANSI NFPA 70 latest edition Label all wires prior to disconnection when A CAUTION P e servicing controls Wiring errors can cause improper and dangerous operation Installation must comply with 1 National Electrical Code and any other national state provincial or local codes or regula
4. TPT_ 3 125 E SH3 OFFSET 26 E SH3 DIFF 3A VALUE TIME 26 EXIT S5ELECT HOME 24 hour pump in activity operation In the event there is not a call for heat in 24 hours the loop pump will operate for the time of the system pump delay setting To set time for SYS PUMP DELAY 1 While still on the Menu Selection Screen scroll down and select CIRCULATION PUMPS by pressing the NAVIGATION dial 2 In the CIRCULATION PUMPS Menu FIG 4 7 and FIG 4 8 select SYS PUMP DELAY scroll to the intended time value and press the RIGHT SELECT SAVE key Figure 4 7 System Pump Delay Screen Models KB Figure 4 8_System Pump Delay Screen FTXL KBX WB and WH Models STANDBY SHUTDOWN 7 SYSTEME DHU TANK reve EHE DERRY son OLER Dhu CIRCO GH PUMP DELAY z0 BY PUNE DELAY OB ELR ANTI SELEE 0 20 CAL PUMP DELAY 61 60 EXIT A ADJUST SAVE BLRANTT SETZE 00 20 E gas SYS PUMP TYPE CFH EAIT 5ELECT HOME 17 5 Basic Operation The MTLCB serves as the controlling device for up to three 3 individual loops branching off the system loop of a space heating system It will control each loop pump and mixing valve position in order to satisfy the set point for that loop By installing the sensors provided in kit on the pipe after the pump a mixed temperature is relayed to the boiler display Each thermostat input to the boiler should receive a loop temperature feedback for proper operation Using this input the MTLCB operates the 3
5. ER ss TEM Multi Temperature Loop Control Loop Control Board Instructions 2 Components and Hydronic Piping continue Figure 2 1 Single Boiler Multi Temperature LOOP PRESSURE SENSOR REDUCING VALVE TYPICAL TEMPERATURE TEMPERATURE TEMPERATURE LOOP 1 gt BACKFLOW PREVENTER 1 RE L K GAUGE N weg als UP I NN i i IIB MIXING VALVES WATER an l TYPICAL SENSOR m AIR SEPARATOR EXPANSION TANK MAY SUBSTITUTE LOW LOSS HEADER NOT TO EXCEED 4 PIPE DIA BALL VALVE OR MAX OF 12 APART TYPICAL Y STRAINER RECOMMENDED i BOILER DRAIN POINT T CIRCULATOR TYPICAL DOMESTIC HOT WATER HOT CIRCULATOR WATER FLOW CHECK OUT ANTI SCALD MIXING VALVE Da COLD T WATER se IN UNION TYPICAL TEMPERATURE PRESSURE DRAIN GAUGE Ir IMG00640 NOTICE Please note that these illustrations are meant to show system piping concept only the installer is responsible for all equipment and detailing required by local codes NOTICE A system supply sensor MUST BE installed for proper boiler operation to occur SYSTEM Loop Control Board Instructions Multi Temperature Loop Control 2 Components and Hydronic Piping Figure 2 2 Single Boiler Multi Temperature DHW Zoned PRESSURE LOOP TEMPERATURE TEMPERATURE REDUCING VALVE SENSOR LOOP 2 TYPICAL BACKFLOW e PREVENTER N PRESSURE A GAUGE me 6 dls UP ALAN LI LI MIXING VALVES WATER a TYPICAL
6. way valve to the correct position for mixed water supply The pump will run continuously with the valve positioning until the thermostat set point is met or a Protection Mode is active When demands of more than one loop are active the system set point is maintained at the highest space heat set point enabled All enabled loops are actively satisfied together with up to three 3 different set points mixing down for each set point temperature below the system NOTICE At the beginning of successful communication all 3 way valves will see a signal to close 125 of the time value entered in the General Setup Section FIG 4 3 and FIG 4 4 on page 10 Once a thermostat demand is enabled the pump will run for one 1 minute to stabilize loop temperature before opening to system water Note For smaller systems the use of Ramp Delay is recommended to prevent short cycling and extend runtime At this time the 3 way valve will adjust open to a calculated initial position based on the differential of the sensed temperature and set point The MTLCB will continue to raise the mixed temperature of the loop toward its individual set point while continuously relating to the loop s sensor input by a specific algorithm At the end of a loop demand cycle the pump powers off and the valve will move to the fully closed position 12 EN SYSTEM Multi Temperature Loop Control Loop Control Board Instructions Protections Initial
7. B terminals A and B FIG 3 1 Connect the shield wires to one of the shield terminals on the Low Voltage Connection Board FIG 3 2 and the MTLCB FIG 3 1 LLO0SINI YO S O 3SN3 ANWA ONIAIM 3dVOSVO Loop Control Board Instructions PUMP FUSE ya1108 ROO ale O L AlddNS 7 IWYLNAN A 02L q13lIHs O ANI L YOSNIS dOO1 a 2 2 ZUOSNIS dOO D YOSN3S dOOT m EAS Ys TEM Multi Temperature Loop Control O 0000 O 0 0000600 NdO sn WOO NdO sn WOO NdO S10 WOO JAVA JA IVA JA IVA ONIXIN ONIXIN ONIXIN AVM AYME AYME L C Qd 1ddf1S 01313 Figure 3 1_Multi Temperature Loop Control Board MTLCB 3 Wiring Requirements Gd IddN S 071313 Loop Control Board Instructions Multi Temperature Loop Control 3 Wiring Requirements continuec Figure 3 2_Terminal Strip Connections to the Boiler s Low Voltage Connection Board Knight Knight XL shown below for illustration purposes IMG00103 LOW VOLTAGE CONNECTION BOARD ENABLE CONTACTS y 4 Boiler Parameters Setup Once the wiring requirements of all the MTLCB components are complete the next step is to adjust the following parameters through the boiler s display Cascade Address Loop Temperatur
8. In the event the sensed temperature continues to exceed the set point set point offset 2 F but within the set point 20 F for a given loop a Protection Mode is entered to stop excessive temperatures from being reached To prevent the loop temperature from exceeding this range the following stages are enacted l The pump active on the loop exceeding the set point temperatures is powered off 2 The mixing valve is adjusted from the current position plus 25 to the closed position 3 The pump is powered ON for two 2 minutes 4 Ifthe temperature has not dropped below the set point offset 2 F the pump is turned OFF The control will automatically reset the demand as active once the sensor input is below the set point offset 2 F Error Mode If the sensed temperature rises above set point 20 the display of the boiler will present the sensor input with an exclamation mark ex 128 F The following protection algorithm will begin to prevent a lockout of the loop 1 Ifrunning the pump will immediately power off and the 3 way valve is adjusted 125 in the closed direction 2 Once the close signal ends the pump is powered back on for two 2 minutes Within this time the sensed temperature must drop below set point offset or the pump will be powered off 3 Asa result the temperature will drop below set point offset and the error code ex 128 F is removed With the Initial and Erro
9. LCB I O Rev D Multi Temperature Loop Control MULTI TEMPERATURE LOOP CONTROL BOARD INSTRUCTIONS Models KB 81 286 KBXL 400 801 WB 51 211 FTX 400 850 and WH 55 399 This manual must only be used by a qualified heating installer service technician Read all instructions including this manual the Installation and Operation Manual and the Service Manual before installing Perform steps in the order given Failure to comply could result in severe personal injury death or substantial property y damage Lochinvar Save this manual for future reference ef High Efficiency Water Heaters Boilers and Pool Heaters 1 INTRODUCTION Zee 3 4 BOILER PARAMETERS SETUP 2 COMPONENTS AND HYDRONIC PIPING 4 6 Cascade Communication Setup 10 3 WIRING REQUIREMENTS To Access Cascade Address 10 Line Voltage Connections 7 3 Way Valve Selup 10 LOD SEMIS ONS ee a 7 24 Hour Pump In Activity Operation 11 Mixing ValVes nme ee er 7 To Set Time for SYS Pump Delay 11 Wiring of the Cascade 7 5 BASIC OPERATION 12 A o 12 Milla ee ee editadas 12 Error ModE enge ea 12 Forced Change
10. e Settings 3 Way Valves Pumps Power ON the boiler and place into Shutdown Mode leaving the MTLCB powered OFF With the boiler in Shutdown Mode all calls for heat are disabled and the above parameters can be adjusted Cascade communication setup When the MTLCB is used with a single boiler the boiler must be programmed as a Cascade Leader by setting its Cascade address to 0 To access cascade address 1 While on the Menu Selection Screen select CONTROL MODES 2 In the Control Modes Menu FIG 4 1 and FIG 4 2 select CASCADE ADDRESS and set to 0 3 Press the RIGHT SELECT SAVE key 4 Press the HOME key to exit and download all parameters To adjust the set points for each space heat loop reference the Service Manual for a detailed explanation The 3 Way Mixing Valve Time can be accessed as shown below NOTICE Please note that the brackets denote screen status 3 way valve setup Press and hold the LEFT SELECT MENU key Enter the pass code 3 Scroll down and select TEMPERATURE SETTINGS 4 Scroll down and select 3 Way Valve Time by pressing the NAVIGATION dlal FIG 4 5 FIG 4 6 5 Scroll to the intended value 6 Press the RIGHT SELECT SAVE key de Exit one level 10 EITNERWSYSTEM Multi Temperature Loop Control Loop Control Board Instructions Once all the parameters have been adjusted for the application power ON the MTLCB TX and RX LED s will light u
11. nication bus to the boiler control the Multi Temperature Loop Control Board MTLCB will actively control the water temperature supplied up to three 3 loops The MTLCB will control the 3 way mixing valves and pumps for each of these loops and provide the actual loop temperatures to the boiler for display The MTLCB has been tested and is in compliance with the following standards CSA Standard C22 2 No 0 General Requirements Canadian Electrical Code Part II CSA Standard C22 2 No 24 Temperature Indicating amp Regulating Equipment ANSVUL 873 Temperature Indicating and Regulating Equipment ENYA s Ys TEM Multi Temperature Loop Control Loop Control Board Instructions 2 Components and Hydronic Piping Components The multi temperature loop control consists of four 4 major components in conjunction with the boiler system These components are as follows Multi Temperature Loop Control Board Loop Temperature Sensors Mixing Valves Loop Pumps In order for the system to work properly the components listed above must be installed correctly Reference the piping illustrations included in this section FIG s 2 1 and 2 2 for suggested guidelines in piping Please note that the piping illustrations NOTICE FIG s 2 1 and 2 2 are meant to show system piping concept only the installer is responsible for all equipment and detailing required by local codes 1 Multi Temperature Loop Control Board MTLCB
12. p to signify data is being sent and received from the boiler s control With successful communication the SH1 SH2 and SH3 temperatures can be read with a clockwise rotation of the NAVIGATION dial see FIG 4 3 amp FIG 4 4 If successful communication does not occur reference FIG 4 1 amp FIG 4 2 for set up of the Cascade address Figure 4 1 Cascade Screen Models KB KBX WB and WH Moo BUS INACTIVE MOD BUS TO 0 10 gt CASCADE ADDRESS 0 CASCADE TYPE LL EIT ADIUST SAVE Figure 4 2 Cascade Screen FTXL Models s TANDET SYSTEM DHU TANK BOILER 2 DHU CIRCO CASCADE STANDBY Pol x MEWU eJSCREEH SHOH Figure 4 3_SH1 SH2 and SH3 Screen Models KB KBX WB and WH SHUTDOUN HI LOOP TEMP 10 F SHz LOOP TEMP 140 F SHS LOOP TEMP 1S0 F MEHO 5ETFOINTS H Figure 4 4_SH1 SH2 and SH3 Screen FTXL Models STANDBY SYSTEM DHU TANEC 3 BOILER DHU CIRCE 3 5H1 SETFOINT 125 SH2 SETFOIHT 1253 F SHA SETFOIHT 125 F DALI SETFOIHT 128 F LIMITS s amp SCROLL HOME SENNA Ys Ys TEM Multi Temperature Loop Control Loop Control Board Instructions 4 Boiler Parameters Setup continued Figure 4 5_3 Way Valve Time Screen Models KB Figure 4 6_3 Way Valve Time Screen FTXL Models KBX WB and WH s TANDET SHUTDOWN SVSTEMC DHL TAME Src SEIFI 45 F SH3 OFFSET Tee BOILER DHW CIRCE SHS DIFF IF SH SETFT 125 E gt S WAY VALVE TIME 105 aie ee a q EXIT MADIUST SAVE SHS
13. r Mode Protections the valve is fully closed to reduce the loop temperature by preventing continued hot water supply from the system If the temperature sensed is not reduced within the steps listed above the MTLCB will lockout this loop until temperatures below set point offset are reached During these scenarios ensure the physical movement of the 3 way valve in the event the system needs to be repaired 5 Basic Operation continued Forced Change It is necessary for the MTLCB to sense a temperature change of 2 F within the time of a call for heat and the initial position of the 3 way valve This is a two fold protection where the MTLCB protects the loop from continued normal operation when it cannot calculate the sensitivity of the valve movement needed As a secondary operation the sequence below protects the loop when the loop temperature sensor is connected to the MTLCB but not installed properly not installed or malfunctioning 1 With a call for heat the pump turns on 2 The3 way valve movesto the initial open position after the pump is on for one 1 minute 3 If after three 3 minutes the initial position does not create a 2 F change in sensed temperature the 3 way valve is moved to the closed position 4 After two 2 minutes of closure the 3 way valve is opened to the initial position 5 Repeat Steps 3 and 4 6 Once the 3 way valve is moved to the closed position the loop is locked out for the d
14. tions 2 In Canada CSA C22 1 Canadian Electrical Code Part 1 and any local codes Line voltage connections 1 Connect 120 VAC power wiring to the line voltage terminal strip in the junction box as shown in FIG 3 1 on page 8 2 Wire the loop pumps provided by the installer as shown in FIG 3 1 NOTICE The loop pump connections provide 120 VAC power to the pumps at a maximum current rating of 1 8 amps for each pump EITERWSYSTEM Multi Temperature Loop Control Loop Control Board Instructions Loop sensors ll Install the kit provided loop temperature sensors see FIG s 2 1 and 2 2 Route the sensor wires through a knockout on the side of the MTLCB FIG 3 1 Connect the loop temperature sensors to the SEN1 SEN2 and SEN3 terminals on the MTLCB Mixing valves l 2 Install the mixing valves as shown in FIG s 2 1 and 2 2 Route the mixing valve wires through a knockout on the right side of the MTLCB FIG 3 1 Connect the mixing valve wires to terminals MV1 MV2 and MV3 on the MTLCB Wiring of the cascade Communication between the boiler and the MTLCB IS accomplished using shielded 2 wire twisted pair communication cable Try to keep the cable as short as possible l Connect one end of the twisted pair wires to Cascade terminals A and B on the Low Voltage Connection Board of the boiler see FIG 3 2 on page 9 Connect the other end of the twisted pair wires to MTLC
15. uration of the call for heat 7 The lockout continues for 30 minutes after the call for heat has ended 8 After 30 minutes the next call for heat will begin at Step 1 Please note the first two 2 steps are normal operation and at Step 3 if a 2 F change in temperature is not sensed the protection process will begin If at any point a 2 F change is sensed normal operation will resume SMART Multi Temperature Loop Control SYSTEM Loop Control Board Instructions 13 s m Revision Notes Revision A ECO C08954 initial release Revision B ECO C 10236 reflects the update of the control image in Figure 3 1 on page 8 Revision C ECO 011814 reflects edits made to place the check valves on the outlet side of a the pump on both piping diagrams Lochinvar Revision D ECO C15810 reflects the addition V High Efficiency Water Heaters Boilers and Pool Heaters of FTXL models and screens 300 Maddox Simpson Parkway Lebanon TN 37090 LCB I O Rev D 615 889 8900 Fax 615 547 1000 07 14 www Lochinvar com
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