Market Forge Industries M24G Parts And Service Manual Download Page 9 | Manualshive

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AUGUST 29, 2014

9

M24G & M36G GAS BOILERS

WIRING DIAGRAM

SCHEMATIC DIAGRAM FOR NEW GENERATION BOILERS – 100K, 200K, 300K BTU

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Summary of Contents for M24G

Page 1: ... Avenue Burlington Vermont 05401 USA Telephone 802 658 6600 Fax 802 860 3732 www mfii com P N 14 0308 8 14 Superseding All Previous Parts Lists The Company reserves the right to make substitution in the event that items specified are not available ERRORS Descriptive and or typographic errors are subject to correction ...

Page 2: ...NTS 5 WATER CONTROL BOARD TESING PROCEDURE 6 WIRING DIAGRAM 8 ILLUSTRATED PART LIST 24 BOILER BASE CABINET 10 PRESSURE SWITCH BOX WITHOUT COVER 11 CONTROL BOX ASSEMBLY WITH AND WITHOUT COVER 12 PLUMBING LEFT SIDE GAS BOILER 24 13 FRONT VIEW GAS BOILER 24 200K 14 GAS TRAIN 200K BTU BOILER SHOWN 15 ...

Page 3: ... will not remain lighted No water in boiler Check to be sure water switch is on Check to be sure main water supply is on and the electrical supply to unit is on Main gas cock or supply line not open Open Pressure switch set too low Reset if continuity check shows to be defective replace No voltage to gas valve Check main fuse Gas valve defective Replace Boiler fails to build up any pres sure when ...

Page 4: ...adjust pressure control Pressure gauge reads incorrectly Replace Lime or debris on seat of valve Purge or replace Boiler builds up to pressure shuts down fails to come back on High limit switch set to low or operating pressure control switch set too high Follow instructions for readjusting Re place if defective Water does not enter boiler Main water supply off Turn on Power not reaching unit Check...

Page 5: ...SI 1kg cm 2 Check boiler pressure gauge The gas burners should cycle ON at 5 PSI and cycle OFF at 7 PSI 3 If boiler does not come on when pressure gauge reads 5 PSI and does not go off when pressure gauge reads 7 PSI proceed as follows WARNING Because power must be on to adjust pressure switches be sure to protect against electrical shock a Remove screw and lift front cover off control box b Hand ...

Page 6: ... is power at any of these terminals you will need to find the source and turn it off Remove Wires from Probe and Relay Switch Termi nals DO NOT remove wires from L 1 L2 terminals Tag wires and remove from probe and relay contact terminals including GND terminal Tag and remove wires from RESET terminals Connect jumper wire to both RESET terminals Turn Power On to Terminals L 1 L2 LED l should turn ...

Page 7: ...hat there is no power at the LO LlTE NC terminal and power at the HTR NO terminal Connect jumper wire to RESET terminals Remove jumper wire from LW 2 and GND termi nals LED 3 should turn off after a 3 second delay USE V O M to verify that there is power at the LO LlTE NC terminal and no power at the HTR NO terminal Connect jumper wire from LW 2 and GND termi nals LED 3 should remain off IMPORTANT ...

Page 8: ...AUGUST 29 2014 8 M24G M36G GAS BOILERS WIRING DIAGRAM WIRING DIAGRAM FOR NEW GENERATION BOILERS 100K 200K 300K BTU ...

Page 9: ...AUGUST 29 2014 9 M24G M36G GAS BOILERS WIRING DIAGRAM SCHEMATIC DIAGRAM FOR NEW GENERATION BOILERS 100K 200K 300K BTU ...

Page 10: ... 8936 Flue Inner Assembly 300k Boiler 4 08 5894 Market Forge Nameplate Logo 5 91 5795 Handle Front 6 94 5007 Panel Front Assembly 24 6 94 5006 Panel Front Assembly 36 7 10 0631 Leg 6 7 08 5206 Leg 8 7 08 5211 Leg 10 7 08 5208 Leg Flanged 6 7 10 0326 Caster 5 8 98 3968 Trim Edge 9 98 3978 Glass 10 98 3991 Gasket Adhesive 11 98 4010 Panel Side Single Panel 12 98 3995 Panel Rear Assembly 24 12 98 399...

Page 11: ...X WITHOUT COVER ITEM PART NO DESCRIPTION 1 94 5064 Box Pressure Switch 2 10 8410 Pressure Switch Hi Limit 3 10 8411 Pressure Switch Operating 4 98 3875 Switch Drain By Pass 5 08 7933 Manifold Pressure Switches 6 10 4804 Pressure Gauge 7 09 4844 Union Elbow 1 2 ...

Page 12: ...ON 1 08 6549 Switch Power 2 94 5127 Switch Manual Reset 3 10 5052 Light Red 4 08 6450 Transformer 120 240V 5 98 1680 Board Water Level Control 6 94 5022 Ignition Module 7 08 6472 Relay Tube 8 08 6475 Relay Base 9 98 3877 Relay Bracket 10 94 5003 Artwork Control Box 11 94 5066 Cover 12 94 5069 Terminal Strip ...

Page 13: ...ssembly 4 10 7955 Valve Safety 15 PSI 5 10 1058 Valve Cold Water Condenser 120V 6 10 1311 Valve Drain 120V 7 08 4822 Valve Boiler Feed 8 08 7959 Condenser 3 8 Hose 21 Long 9 98 3894 Copper Nozzle 10 98 3914 Comp Fitting 3 4 11 98 1401 Valve Check 12 10 0287 Hose Drain 3 4 13 10 4137 Clamp Hose 14 08 7974 Clamp Hose 15 98 3892 Condenser Thermostat 16 10 1152 Plug ...

Page 14: ...100K 200K Boilers 3 94 5034 Gas Manifold 300K Boilers 4 10 3661 Drain Valve Maunal 5 10 1311 Drain Valve Automatic 6 91 5112 Probe Plate Assy 7 10 7955 Safety Valve 8 10 4556 Air Vent 9 08 4991 Tee 3 4 Side Outlet 10 94 5065 Cover Pressure Switch Box 11 94 5010 Label Pressure Switch Box 12 94 5128 Gas Valve 120V Propane Kit 13 08 7970 Hose Water 20 14 98 3864 Flex Conduite ...

Page 15: ...sket Probe Plate 5 08 6399 Probe Lowest Probe 6 08 6398 Probe 7 08 6364 Probe 91 5112 KIT that includes items 3 4 5 and 6 8 91 8810 Cover Hand Hole 9 08 4415 Gasket Hand Hole 10 10 2414 Nut 11 10 2310 Washer 12 91 8811 Yoke 13 10 4754 Glass Sight Gauge 6 14 90 0039 Rubber Brass Washer Set 15 10 2728 Kit Complete Includes Valves Glass 16 98 3928 Elbow 1 2 Side Outlet 17 98 3944 Stud 1 4 20 18 98 39...

Page 16: ...RIPTION 1 08 7832 Tube Flex Gas Line 2 10 1154 Compression Coupling 3 98 3890 Pilot Tube 4 94 5099 Spark Pilot and Igniter 5 94 5129 Pilot Orifice Prop 6 94 5046 Burner 7 94 5052 Pilot Brkt 8 08 7119 Orifice Natural Gas Brass 30 8 08 7120 Orifice Propane 45 Black 9 08 7118 Orifice Hood ...

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