low voltage 120 vac - lochinvar, llc

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TERMINAL STRIP TERMINAL STRIP 16 15 13 12 11 10 9 6 5 3 2 1 39 36 35 33 32 31 30 29 26 25 23 22 21 20 19 OUTLET SENSOR (S9) OUTLET SENSOR (S1) FLUE SENSOR FLUE SENSOR (S10) 120VAC NEUTRAL ON/OFF SWITCH GAS VALVE (LARGE) GAS VALVE (SMALL) CONTACTOR BOILER PUMP CONTACTOR DHW PUMP CONTACTOR BLOWER BLOWER 1 2 3 BAS (AS APPLICABLE) FLUE DAMPER TRANSFORMER 1 2 3 TRANSFORMER FLUE DAMPER TEST SWITCH LWCO PROBE LWCO RESET GPS1 GPS2 BLOCKED FLUE SWITCH BLOCKED DRAIN SWITCH ALARM CONTACTS CONTACTS TANK THERMOSTAT LOUVER PROVING AUX SWITCH 1 AUX SWITCH 2 ENABLE R W FLAME SENSE 1 FLAME SENSE 2 SPARK GENERATOR SPARK ROD SHIELD SHIELD A B BAS OPTION RATE OUT BOILER PUMP OUT SENSOR SENSOR TANK SENSOR OUTDOOR SENSOR BMS IN PUMP IN SHIELD SHIELD A B CASCADE INLET SENSOR GROUND 1 2 5 BLOWER BOX DEPICTS OPTIONAL ITEMS BOX DEPICTS DUAL SENSOR SINGLE HOUSING HIGH VOLTAGE LOW VOLTAGE 120 VAC "X5" BLOCK WIRING IS MODEL DEPENDENT AIR VALVE PRESS. SWITCH BLOWER AIR VALVE HIGH LIMIT SWITCH M M DISCONNECT POWER BEFORE SERVICING BOILER PUMP DHW PUMP 5.0 A 3.15 A F2 LARGE GAS LARGE GAS SMALL GAS SMALL GAS USB INTERFACE X11 WIFI DONGLE USB CABLE SW1 LG CON BRD OPTIONAL ETHERNET CABLE OPTIONAL USB/WIFI EXTENSION CABLE BAS E GND BAS BOARD (AS APPLICABLE) SHIELDED CABLE FROM X4 TO J12 OR J23 AS APPLICABLE Notes: 1. All wiring must be installed in accordance with: local, state, provincial and national code requirements per either N.E.C. in USA or C.S.A. in Canada. 2. If any original equipment wire as supplied with the appliance must be replaced, it must be replaced with wire having same wire gauge (AWG) and rated for a minimum of 105°C. Exceptions: Replacement high voltage spark lead and shielded cables must be purchased from the factory. Use of a non-approved spark lead or shielded cables can lead to operational problems which could result in non-repairable damage to the integrated controller or other components. 3. Actual connector block locations may vary from those shown on diagrams. Refer to actual components for proper connector block locations when using diagrams to troubleshoot unit. LADDER DIAGRAM 100266646 REV B

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100266646_2000507238_REV B6 5
26 25
OUTLET SENSOR (S9)
OUTLET SENSOR (S1)
OPTIONAL ETHERNET CABLE
SHIELDED CABLE FROM X4 TO J12 OR J23 AS APPLICABLE
Notes: 1. All wiring must be installed in accordance with: local, state, provincial and national code requirements per either N.E.C. in USA or C.S.A. in Canada. 2. If any original equipment wire as supplied with the appliance must be replaced, it must be replaced with wire having same wire gauge (AWG) and rated for a minimum of 105°C. Exceptions: Replacement high voltage spark lead and shielded cables must be purchased from the factory. Use of a non-approved spark lead or shielded cables can lead to operational problems which could result in non-repairable damage to the integrated controller or other components. 3. Actual connector block locations may vary from those shown on diagrams. Refer to actual components for proper connector block locations when using diagrams to troubleshoot unit. LADDER DIAGRAM
100266646 REV B