Laars MagnaTherm MGH1600 Installation And Operation Instructions For Download

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LAARS Heating Systems

Page 6

Models 3500 and 4000

Manual

Gas Valve

(hidden behind main

gas valve)

Blower

Touch Screen

Air Intake and Filter

Main Power

Connections

Water Outlet

Water Inlet

Vent

Power Pack

Field

Electrical

Connections

Condensate

Trap

Heat Exchanger
Condensing Unit

Gas Supply

Rating Plate.

(on outside of panel)

Spark

Generator

Control Panel

Drain

Summary of Contents for MagnaTherm MGH1600

Page 1: ...nity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas sup...

Page 2: ...Drain Trap 25 6 E Suggested Piping Schematics 25 SECTION 7 Water Connections 7 A Water Quality 30 7 B Suggested Piping Schematics 30 7 C Piping Requirements 30 7 E Water Flow 32 7 D Condensate Drain...

Page 3: ...86 12 A 1 Responding to a Lockout Hold or Alert 86 12 A 2 Viewing the Lockout and Alert Histories 86 12 B Troubleshooting Table 88 12 C Diagnostic Tests and Input Output Indicators 97 12 D Lead Lag Di...

Page 4: ...LAARS Heating Systems...

Page 5: ...Model Nomenclature 1 2 3 4 5 6 7 8 9 10 11 12 13 M G SERIES M G USAGE H HYDRONIC V VOLUME WATER SIZE MBTU h 1 6 0 0 2 0 0 0 2 5 0 0 3 0 0 0 3 5 0 0 4 0 0 0 FUEL N NATURAL P PROPANE COUNTRY CODE X USA...

Page 6: ...domestic hot water use adjust the outlet control limit or use temperature limiting valves to obtain a maximum water temperature of 125 F 52 C WARNING The inlet gas pressure to the unit must not excee...

Page 7: ...disturbed as a result of servicing or repair these substances become airborne and if inhaled may be hazardous to your health Do not remove or replace RCF parts or attempt any service or repair work i...

Page 8: ...l models the Control Panel hinges forward for easy access to wiring and to the heat exchanger Touch Screen Heat Exchanger Condensing Unit Air Intake and Filter Water Outlet Water Inlet Vent Power Pack...

Page 9: ...Air Intake and Filter Water Outlet Main Power Connections Water Inlet Vent Power Pack Field Electrical Connections Condensate Trap Heat Exchanger Condensing Unit Gas Supply Manual Gas Valve Rating Pla...

Page 10: ...d main gas valve Blower Touch Screen Air Intake and Filter Main Power Connections Water Outlet Water Inlet Vent Power Pack Field Electrical Connections Condensate Trap Heat Exchanger Condensing Unit G...

Page 11: ...9 8 203 38 96 57 5 147 49 8 126 4 8 12 60 8 154 2 6 7 8 4 21 6 2000 29 3 75 79 8 203 38 96 57 5 147 49 8 126 4 8 12 60 8 154 2 6 7 8 4 21 6 2500 30 8 78 87 221 41 5 105 60 5 154 60 8 154 6 5 16 71 180...

Page 12: ...nts of the the Installation Kit box making sure that all parts are there and not damaged during shipping 1 Gromet Nylon 2 Box containing Outdoor Sensor 3 Box containing System Sensor 4 Tank Sensor 5 S...

Page 13: ...wer floors of the structure When this type of location is not available install a suitable drain pan adequately drained under the appliance The appliance is design certified by CSA International for i...

Page 14: ...exhaust vent pipe that is certified to ULC S636 Intake air pipe must be PVC or CPVC that complies with ANSI ASTM D1785 F441 ABS that complies with ANSI ASTM D1527 stainless steel or galvanized materi...

Page 15: ...s listed on the following tables have been tested and authorized to safely operate with this equipment Suppliers of stainless steel and polypropylene venting that are not listed on these tables are no...

Page 16: ...ce shall communicate with the outdoors in accordance with Method 1 or 2 See the following descriptions Where ducts are used they shall be of the same cross sectional area as the free area of the openi...

Page 17: ...personnel Refer to the applicable codes 3 D Venting WARNING Selection of improper vent materials for installations that are installed in closets or will be operated in high ambient temperature levels...

Page 18: ...lling this unit to use ULC S636 certified vent material consistent with the requirements as described in the Venting and Combustion Air section Class I venting systems are suitable for gas fired appli...

Page 19: ...rtified vent system into which the vent terminal screen can be installed Be sure to install and terminate both vent and combustion air pipes per the instructions in this section 3 E Locating the Vent...

Page 20: ...gulator vent outlet See note 4 3 feet 91 cm J Clearance to nonmechanical air supply Direct vent only 36 91cm inlet to building or the combustion air inlet Other than Direct vent 4 ft 1 2m below 36 inc...

Page 21: ...e unit is vented through the roof the vent must extend at least 3 feet 0 9 m above the point at which it penetrates the roof It must extend at least 2 feet 0 6 m higher than any portion of a building...

Page 22: ...ning connected to the common venting system placed in operation while the other appliances remaining connected to the common venting system are not in operation 1 Seal any unused openings in the commo...

Page 23: ...d vacuation 2 Inspecter de facon visuelle le syst me d vacuation pour d terminer la grosseur et l inclinaison horizontale qui conviennent et s assurer que le syst me est exempt d obstruction d trangle...

Page 24: ...ting shall be reduced at a rate of 4 percent for each 1000 ft 300 m above sea level This must be considered before selecting the equipment size 2 The gas pressure settings must match fuel type as show...

Page 25: ...61 2 067 2 469 3 068 4 026 Length ft 10 3 520 6 790 10 800 19 100 39 000 20 2 420 4 660 7 430 13 100 26 800 30 1 940 3 750 5 970 10 600 21 500 40 1 660 3 210 5 110 9 030 18 400 50 1 480 2 840 4 530 8...

Page 26: ...C 17 C 19 C 22 C Input Rate Headloss is for boiler only no piping Headloss is for boiler only no piping Lower flow rates may require flow switch adjustment SIZE Output Max Min 25 F Head loss Feet 30...

Page 27: ...Headloss Flow Rate Temp Rise Headloss LPM C m GPM F Ft LPM C m 0 525 11 1 10 1 177 17 41 0 670 9 4 12 5 0 575 14 10 1 177 21 43 9 670 12 13 4 7 719 13 9 10 0 220 21 46 0 833 11 7 14 0 719 17 11 0 220...

Page 28: ...onsult the glycol specifications or the glycol manufacturer for information about SECTION 6 Water Connection Boilers 6 A System Piping Hot Supply Connections NOTE This unit must be installed in a clos...

Page 29: ...rain must be installed to prevent the accumulation of condensate When Figure 9 Raised concrete platform Neutralizer kit is not included 6 E Suggested Piping Schematics Figure 10 on page 26 through Fig...

Page 30: ...ontrols Air vent 4 pipe dia max 4 pipe dia max 4 pipe dia max 4 pipe dia max Low temp radiant zone Space heating zone circuits Space heating zone circuit System pump Note This drawing is a schematic r...

Page 31: ...iler Low temp radiant zone Low temp radiant zone Air vent Water feed controls Expansion tank 4 pipe dia max Indirect DHW tank Anti scald mixing valve Domestic hot water out Cold water Note This drawin...

Page 32: ...radiant zone Space heating zone circuit Air vent Water feed controls Expansion tank Common piping must be sized for the combined water flow of all of the boilers 4 pipe dia max 4 pipe dia max 4 pipe...

Page 33: ...for the combined water flow of all the boilers High temp space heating zone circuit 4 pipe dia max 4 pipe dia max 4 pipe dia max Indirect DHW tank 4 pipe Dia Max Note Indirect pump must be sized for...

Page 34: ...Install a diaphragm type expansion SECTION 7 Water Connections 7 A Water Quality Water heaters must be installed in water conditions of 15 gpg hardness or less with a pH range of 6 5 to 9 5 pH Values...

Page 35: ...sate is not covered by the warranty If installed indoors and there is an event such as a power outage component failure or other issue when freezing is likely the heater and system must be drained to...

Page 36: ...most always used It is advised that the unit be installed on a raised 4 concrete platform so that there is sufficient elevation for the condensate neutralizer below the included condensate trap See Fi...

Page 37: ...integrated 4 amp resettable fuse On three phase models a step down transformer which is protected using an appropriate din rail mounted circuit breaker generates 120 volt single 8 B Main Power Connec...

Page 38: ...control board TB1 15A through 20A They are fed 120 Volts internally from the main power feed The current rating of the contacts is 7 4 amps and an appropriately sized contactor must be supplied and in...

Page 39: ...re 17 Do not run any wiring to the right as this will restrict the opening ability of the Control Panel Field Electrical Connections At the front of the unit Available Electrical Raceway Available Kno...

Page 40: ...Single unit installations Power for Field Connections must be made at Terminal Board 1 at the front of the unit 15 thru 45 of TB1 See Figure 19 and Figure 20 For single unit installations the connecti...

Page 41: ...B 38MB2 C 39REMOTERESET 40REMOTE TOOLS 41 42 TODFEED 43 4 20MA 430 10VDC 4 20MA 44 0 10VDC CONN B CONN C 8 G Control Panel Layout Figure 20 Control Panel Layout 1 CA0099 VARI PRIME PRINTED CIRCUIT BOA...

Page 42: ...an be controlled and monitored with a Gateway BAS using the included Modbus ports Doc 4236 The Gateway Modbus Control H2354400 for BACnet MS TP BACnet IP Modbus TCP IP Metasys N2 and LonWorks Connect...

Page 43: ...nnections This commercial unit can be connected in Lead Lag up to a total of 8 units controllers One as the Lead control and up to 7 more as the Lag controllers For Lead Lag Connections COM2 A B and C...

Page 44: ...DISPLAY 7 DISPLAY 8 LWCO 2 120V N P1 P2 ADDITIONAL HIGH LIMIT BLOCKED FLUE BLOCKED INTAKE THERMAL CUTOUT FLOW SWITCH HIGH GAS MANUAL RESET HIGH LIMIT TO TB1 4C 120V N TO B4 PROBE 2 1 9 2 10 3 11 4 12...

Page 45: ...N WIRE FROM SHIELDED CABLE BL Y BL V W V OR OR W W BK W V W BK BR Y BR Y G W BK BK BK R BK Y W R W R W R GY BL BR R BR Y GY V GY BK R GY R FLAME ROD BK OR 2 1 3 4 TB1 39C TB1 40C TB1 42C TB1 43C TB1 4...

Page 46: ...RK GENERATOR 15 7 14 6 13 5 12 4 11 3 10 2 9 1 2 TO B4 PROBE TO TB1 4C 120V N MANUAL RESET HIGH LIMIT HIGH GAS FLOW SWITCH THERMAL CUTOUT BLOCKED FLUE BLOCKED INTAKE ADDITIONAL HIGH LIMIT P1 P2 LWCO 2...

Page 47: ...OLS VARIPRIME INSTALLED ON HYDRONIC UNITS ONLY USED ON SIZE 4 0 KBTU ONLY 2 TB1 38C TB1 37C TB1 36C BK V BR V BK O BR G BK BR R BK BR W Y J3 TB1 44C TB1 45C TB1 43C TB1 42C TB1 40C TB1 39C 4 3 1 2 BK...

Page 48: ...1 TITLE FRACTIONS 1 8 WIRE DIAGRAM MGT HIGH VOLTAGE PANEL 110V E23606 H H N N G C B A D G 20AMP BREAKER LINE LOAD 5 4 6 1 2 3 120V 24V Y W BK BL 4 AMP HV LV 5 6 3 2 1 4 3 2 1 4 5 6 TRANSFORMER PH1500...

Page 49: ...N DIAGRAM E23512 L1 L2 G BLOWER L1 BK L2 WIRE COLOR LEGEND BLACK BK BROWN BR RED R A B C D 4 PROPRIETARY TO LAARS HEATING SYSTEMS AND SHALL NOT BE 3 2 BY LAARS HEATING SYSTEMS DWG NO E23751 SH 1 RE SM...

Page 50: ...WHITE W THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN ARE PROPRIETARY TO LAARS HEATING SYSTEMS AND SHALL NOT BE REPRODUCED TRANSFERRED TO OTHER DOCUMENTS USED OR DISCLOSED TO OTHERS FOR MANUFACT...

Page 51: ...BK W R BK BK NOTE SEE WIRE DIAGRAM LABEL H2367000 AND DOCUMENT H2367100 OLOR LEGEND BK BR R O Y G BL D C B 4 3 2 THE INFORMATION CONTAINED HEREIN ARE RS HEATING SYSTEMS AND SHALL NOT BE FERRED TO OTH...

Page 52: ...0010 A B C D 1 2 3 4 4 3 2 1 SCALE NONE INTENDED SIZE SOFTWARE DWG NO B BY LAARS HEATING SYSTEMS CO XR 1 9 17 17 013N RELEASE CHECK DRAFT ECN CHANGE REV REVISIONS RR 1 9 17 E23 PURPOSE EXCEPT AS SPECI...

Page 53: ...LAARS HEATING SYSTEMS DWG NO E23603 SH 1 REV A CH 2 17 16 REVISIONS REV CHANGE APPR ENGR APPR ECN DRAFT CHECK UPDATED VFD CONNECTIONS A 16 017N AH 2 17 16 UNLESS OTHERWISE SPECIFIED PURPOSE EXCEPT AS...

Page 54: ...E 120V BLOCK FLUE INTAKE SWITCHES BK W GY R GY BL G G HIGH VOLTAGE WIRE C CHART 600 480 L1 P BR L2 V O L3 T Y WIRE CO LEGEN BK B BL BR B G GY O O R V V W Y Y T P NOTES SEE WIRE DIAGRAM LABEL H23655 AN...

Page 55: ...M PUMP BOILER PUMP J8 3 TB1 13 J8 6 J8 7 J8 11 J8 12 J4 2 J4 4 TB1 4A TB1 4A J4 6 J4 2 J4 4 J4 6 TB1 4A TB1 4A J6 3 R1 120V 120V 120V 120V 120V 120V FLOW SWITCH TB1 35C TB1 33C OUTLET WATER J8 8 J8 9...

Page 56: ...1 J8 12 J4 2 J4 4 TB1 4A TB1 4A J4 6 J4 2 J4 4 J4 6 TB1 4A TB1 4A J6 3 R1 120V 120V 120V 120V TB1 35C TB1 34C TB1 33C OUTLET WATER INLET WATER J8 8 J8 9 J8 4 J8 10 J8 5 3 2 4 1 STACK J9 4 J9 5 J9 6 3...

Page 57: ...3 J8 6 J8 7 J8 11 J8 12 J4 2 J4 4 TB1 4A TB1 4A J4 6 J4 2 J4 4 J4 6 TB1 4A TB1 4A J6 3 R1 120V 120V 120V 120V TB1 35C TB1 34C TB1 33C OUTLET WATER INLET WATER J8 8 J8 9 J8 4 J8 10 J8 5 3 2 4 1 STACK J...

Page 58: ...TIONS TT ANALOG OUTDOOR SYSTEM DHW PUMP SYSTEM PUMP BOILER PUMP J8 3 TB1 13 J8 6 J8 7 J8 11 J8 12 J4 2 J4 4 TB1 4A TB1 4A J4 6 J4 2 J4 4 J4 6 TB1 4A TB1 4A J6 3 R1 120V 120V 120V 120V 120V FLOW SWITCH...

Page 59: ...30 REMOTE RESET MB2 COM 2 DHW SENSOR PUMP 0 10V J10 3 MB2 C MB2 A DISPLAY 6 J10 6 4 20 ma 0 110VDC 43 44 45 0 10VDC J10 5 4 20 ma VARIPRIME ONLY R3 J10 8 J10 1 MB2 B VTB 3 3 VTB 3 4 120 NEUTRAL VARIP...

Page 60: ...CTIONS TT ANALOG OUTDOOR SYSTEM DHW PUMP SYSTEM PUMP BOILER PUMP J8 3 TB1 13 J8 6 J8 7 J8 11 J8 12 J4 2 J4 4 TB1 4A TB1 4A J4 6 VFD 16 VFD 17 J4 2 J4 4 J4 6 TB1 4A TB1 4A J6 3 R1 120V 120V 120V 120V 1...

Page 61: ...FEED J10 2 J6 8 J6 7 ALARM 27 28 26 25 24 23 22 21 TB1 4A 20 19 18 17 15 16 FIELD CONNECTIONS TT ANALOG OUTDOOR SYSTEM DHW PUMP SYSTEM PUMP BOILER PUMP J8 3 TB1 13 J8 6 J8 7 J8 11 J8 12 J4 2 J4 4 TB1...

Page 62: ...al operation the Touch Screen will automatically present this Home screen See Menu 1 Menu 1 Home Screen Figure 38 To access the Touch Screen Figure 40 With Front Doors Open Color Status Control Icon B...

Page 63: ...aller Password Setup and parameter changes made when the system is installed and some diagnostic and troubleshooting functions The installer level password is lnt lower case LNT User Level no password...

Page 64: ...change a parameter that is related to safety the system will present a warning which looks like this Menu 6 Parameter Safety Warning Press OK to continue The system will ask you to login before you ma...

Page 65: ...rify the entries in those groups in the same way Do this until the following screen shows Menu 8 Safety Parameter Reset 6 When the process is complete the system will tell you to reset the control sys...

Page 66: ...uts used by the system Details Allows you to check the status of all of the setup parameters on the control system 9 F Configuring Parameters In this section we will give you a quick explanation of ho...

Page 67: ...and Alert logs will be incorrect The display has a removable battery CR2032 to store time date lockout and alerts in the event of a power failure To set the clock 1 Start at the home screen Menu 14 H...

Page 68: ...g software date codes model numbers and program name as well as giving the installer access to re name the boiler and to change the modbus addresses for lead lag operation 9 H 2 CH Central Heat Config...

Page 69: ...ect water heaters that are used with boiler MGH systems 9 H 5 Warm Weather Shutdown Configuration Connect the outdoor reset sensor as descibed in Section 8 D From this menu you will be able to enable...

Page 70: ...nce the system has been installed the Pump Configuration menu will allow the installer to adjust Pump control Overrun time and Demand control for the various pumps in the system 9 H 10 Statistics Conf...

Page 71: ...quired pressures listed in Table 23 without turning on the Main valve With a call for heat enabled the unit will start the normal sequence of operation to light the pilot only Once pilot pressure has...

Page 72: ...that as the heating demand increases the Lead Lag system puts more units on line As the heating demand is reduced the Lead Lag system shuts off some of the units The signal from the System sensor is...

Page 73: ...or death When the Run sequence is initiated the unit with the least amount of runtime will fire If the heating demand increases so that the firing rate of that first unit rises to your unit configurat...

Page 74: ...lave Enable You will be prompted to sign in This can be done by pressing the LOCK symbol at the top right type in LNT and press OK Then you can select Slave Enable Select Enable Slave for built in Lea...

Page 75: ...fig Central Heat CH Config Central Heat CH Config Setpoint CH Config Setpoint CH Config Setpoint CH Config Setpoint CH Config Setpoint CH Config Setpoint CH Config Setpoint CH Config Modulation CH Con...

Page 76: ...100 CH LL Slave CH DHW LL Slave DHW CH DHW Arrow Points to Loop with Higher Priority Arrow Points to Loop with Higher Priority Shutdown Immediately 95F Shutdown Immediately Disabled 35F 140F 10 0 0 10...

Page 77: ...me Shutdown Immediately Shutdown Immediately Disabled 65 65F 40F 150F 0 Disabled 0 100 Enable Disable DHW CH Enabled CH DHW DHW CH Enable Disable Drop After Priority Time 240 min or 4 Hrs Boost During...

Page 78: ...ead Lag Master Config Adv Settings Modulation Lead Lag Master Config Adv Settings Modulation Lead Lag Master Config Adv Settings Modulation 10 0 0 100 0 100 5F 20 2F 30F 0 100 210F 10F 50F 210F 0F 30F...

Page 79: ...ee Figure 21 on page 38 For additional information on purchasing and setting up Modbus and other communication protocols contact your manufacturers representative Starting at the Home Screen tap onto...

Page 80: ...t at 100 10 VDC or 20 mA 5 Once the Main Gas valve is energized the PCB will maintain pump output at 100 for 60 seconds to allow the system to stabilize Once the 60 sec ond timer has expired the PCB w...

Page 81: ...enu 26 Status Summary Screen 5 From the Configuration menu select the line Burner Control Ignition Menu 27 Configuration Menu 6 Once there select Pilot Test Hold and turn this feature ON This feature...

Page 82: ...only active when the boiler is in Run mode To setup high fire select maximum modulation then Start Test buttons Wait for the boiler to enter run and the fan speed to reach the maximum RPM Using a com...

Page 83: ...al 9 0 0 2 25 lower than high fire CO2 0 5 to 1 2 wc Propane 10 0 0 2 25 lower than high fire CO2 0 5 to 1 2 wc 3 500 Natural 9 0 0 2 25 lower than high fire CO2 0 5 to 1 2 wc Propane 10 0 0 2 25 lowe...

Page 84: ...devices WARNING Do not use this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and an...

Page 85: ...etup must be checked before the unit is put into operation Problems such as failure to start rough ignition strong exhaust odors etc can be due to improper setup Damage to the boiler resulting from im...

Page 86: ...l and clean with alcohol Apply new sealing material and reassemble 11 Once a year the items listed below should be inspected by a qualified service technician 11 B Maintenance Notes Use only genuine M...

Page 87: ...etermined to be defective install a new spark assembly in the reverse order replacing the gasket if necessary 11 B 5 Flame Sensor The flame sensor is a single rod system The minimum flame signal that...

Page 88: ...es of the heat exchanger tubes 7 Once the tubes have been brushed clean rinse the tubes and combustion chamber with a small amount of water to rinse all of the debris out of the bottom of the flue col...

Page 89: ...of the date and time settings The battery is a CR2032 coin type battery and has an expected service life of 6 years If the battery needs to be replaced there is a battery cover on the back of the touc...

Page 90: ...control system is waiting for a condition to be satisfied No Reset is required to recover from an alert The system maintains a history of the 15 most recent alerts Sometimes it can be helpful to chec...

Page 91: ...curances Press Alerts to bring up a list of the last 15 Alerts and Silence Alarm in the event of a lockout condition By silencing the alarm the audible alert has been disabled However the Lockout is s...

Page 92: ...dule 2 Waiting for safety data verification L 1 Device in Configuration mode and safety parameters need verification and a device needs reset to complete verification 2 Configuration ended without ver...

Page 93: ...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...

Page 94: ...Level Switch H 1 Reset the low gas pressure valve and the high gas pressure valve 2 Check for power at all Safety Components 3 Check wiring and correct any faults 4 Check all safety interlocks connect...

Page 95: ...ps are correct and fault persists replace the module 92 Outlet sensor fault H 1 Check wiring and correct any possible errors 2 Replace the Outlet sensor 3 If previous steps are correct and fault persi...

Page 96: ...ition transformer electrode flame detector flame detector siting or flame rod position 5 If steps 1 through 4 are correct and the fault persists replace the module 107 Flame lost early in run L 108 Fl...

Page 97: ...lity to change speeds 3 Change the VFD 4 If the fault persists replace the module 130 Fan speed failed during ignition H or L 1 Check wiring and correct any potential wiring errors 2 Check the VFDs Va...

Page 98: ...kup 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 157 Combustion pressure and flame OFF L 158 Main v...

Page 99: ...it Control Input enable setting L 200 Invalid lightoff rate setting L 201 Invalid lightoff rate proving setting L 202 Invalid MFEP Main Flame Establishing Period time setting L 203 Invalid MFEP Main F...

Page 100: ...er high limit setpoint setting L 228 Invalid Stack limit setpoint setting L 229 Invalid Modulation output setting L 230 Invalid CH Central Heat demand source setting L 231 Invalid Delta T limit delay...

Page 101: ...uts displayed The Burner Control I O button leads to Menu 39 Menu 39 Burner Control I O Screen A green dot indicates a function that is on 2 Press the Digital I O button to see parameters with the fun...

Page 102: ...of burner cycles etc Menu 45 Statistics Configuration Screen 12 F Analysis The control system includes an Analysis branch that can display the behavior over a period of time for several different para...

Page 103: ...w switch gas pressure switches LWCO and High Limit aquastats are completed the unit will start the blower and begin the ignition sequence The unit is equipped with a low and high fire air pressure swi...

Page 104: ...21 8 9 D 14 23 SHOWN FOR REF ONLY 2 A AC DISTRIBUTION BOX G SECTION 13 Replacement Parts Use only genuine Manufacturer replacement parts 13 A General Information To order or purchase parts contact you...

Page 105: ...p left 20N3035 20N3035 30N3057 30N3057 40N3035 40N3035 24 Bracket pressure switch 20N3053 20N3053 20N3053 20N3053 20N3053 20N3053 25 Cover field connections 17J3025 17J3025 17J3025 17J3025 17J3025 17J...

Page 106: ...LAARS Heating Systems Page 102 1 13 12 4 3 5 13 2 15 Final Assembly DETAIL A 9 10 8 DETAIL Final Assembly...

Page 107: ...J3025 17J3025 17J3025 17J3025 17J3025 26 Gasket 75 x 06 x 2 feet R2074402 R2074402 R2074402 R2074402 R2074402 R2074402 Final Assembly 1600 2000 2500 3000 3500 4000 Item Description Part No Part No Par...

Page 108: ...2022200 V2022200 27 Pilot regulator V2022100 V2022100 28 Compression fitting 1 4 tube x 1 4NPT P0004100 P0004100 29 Pilot tube 40N6025 40N6025 30 Valve Gas Dungs V2021200 V2022300 NAT V2021200 PROP 31...

Page 109: ...ater Heaters Page 105 A 12 10 1 2 2 3 6 16 8 7 11 13 15 14 4 9 5 A 12 10 1 2 2 3 6 16 8 7 11 13 15 14 4 9 5 W2014100 20N3060 17 Spark Generator 17 DETAIL 16N5074 13 B 4 Blower Burner Assembly Part Num...

Page 110: ...Part No Part No 1 Burner L2019900 L2019900 2 Gasket burner S2124100 S2124100 Item Description Part No Part No Part No Part No Part No Part No 1 Heat Exchanger Assembly R16N2070 R20N2070 R30N2070 R30N2...

Page 111: ...o 1 Heat Exchanger Assembly R16N2070 R20N2070 R30N2070 R30N2070 R40N2070 R40N2070 2 Plate rear panel gas pipe 20N3034 30N3034 30N3034 30N3034 30N3034 30N3034 3 Door right 20N3100 20N3100 30N3100 30N31...

Page 112: ...E0013000 RE0 Flow switch paddle E2255800 E2255800 E2255800 E22 4 Well immersion 1 2 NPT RE2058300 RE2058300 RE2058300 RE2 5 Sensor water temperature duplex RE2319900 RE2319900 RE2319900 RE2 6 Coupling...

Page 113: ...MagnaTherm Boilers and Water Heaters Page 109 1 2 3 12 10 7 9 8 14 13 4 5 6 AC DISTRIBUTION BOX ASSEMBLY PART NUMBERS MODEL1600 13 B 8 AC Distribution Box Assemblies and Part Numbers Model 1600...

Page 114: ...LAARS Heating Systems Page 110 6 3 2 1 2 8 13 12 17 16 10 AC DISTRIBUTION BOX ASSEMBLY PART NUMBERS AND BLOWER MODEL 2000 13 B 9 AC Distribution Box Assembly and Blower Part Numbers Model 2000...

Page 115: ...8 D T L P C N I Z C N U 6 1 8 3 T U N 0 0 1 3 0 0 0 F 6 1 6 1 16 16 F2037700 WASHER THICK FLAT 3 8 STEEL ZINC PLATED 13 16 OD 7 6 L E E T S S S E L N I A T S L 2 1 X 8 W E R C S 0 0 9 6 0 0 2 F 2 2 5...

Page 116: ...Heating Systems Page 112 28 26 38 39 26 23 27 16 31 23 20 5 35 11 10 29 7 25 34 37 1 24 9 12 13 14 3 3 4 36 2 17 19 26 39 39 9 6 6 21 17 18 22 30 32 15 8 33 Gas Train Assembly Models 1600 2000 2500 an...

Page 117: ...5086 30N6027 30N6027 17 Nipple 1 8 x2 P0011300 P0011300 P0011300 P0011300 18 Elbow 1 8 P2008900 P2008900 P2008900 P2008900 19 Nipple 1 8 P0011100 P0011100 P0011100 P0011100 20 Nipple tee weldment 30N6...

Page 118: ...l 1 70 236 PIPE PLUG MA 1 W2000300 VALVE MANUA 2 S2123500 WASHER SEA 2 P2089600 ADAPTER FEMALE 1 P2089300 ADAPTER 1 4 TUB 1 40N6040 GAS TRA 1 40N6031 GAS TRAIN 1 V2022300 VALVE 18 23 24 16 22 14 13 12...

Page 119: ...90700 P2090700 25 Nipple 3 8 x2 P2089000 P2089000 26 Ball valve 3 8 V2022200 V2022200 27 Pilot regulator V2022100 V2022100 28 Compression fitting 1 4 tube x 1 4NPT P0004100 P0004100 29 Pilot tube 40N6...

Page 120: ...h E2344901 E2362000 E2363400 E2362301 E2362300 E2362300 10 Pressure switch E2362200 N A N A N A E2362302 E2362302 11 Outlet box not shown E2350900 E2350900 E2350900 E2350900 E2350900 E2350900 12 Space...

Page 121: ...MagnaTherm Boilers and Water Heaters Page 117 Notes...

Page 122: ...LAARS Heating Systems Page 118 Notes...

Page 123: ...MagnaTherm Boilers and Water Heaters Page 119 Notes...

Page 124: ...rk All marks have a white outline If the mark MUST rev the PMS 300 mark white outline H2359200J Customer Service and Product Support 800 900 9276 Fax 800 559 1583 Headquarters 20 Industrial Way Roches...

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Laars MagnaTherm MGH1600, Installation And Operation Instructions For

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