HydroTherm VGA-175B Installation, Operation And Maintenance Manual Download Page 1 | Manualshive

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Summary of Contents for VGA-175B

Page 1: ...oiler 5 Step 2 Installing Steam Piping 6 Step 3 Installing Hydronic Components 7 Step 4 Venting Boiler 7 Step 5 Installing Testing Gas Piping 10 Step 6 Wiring Boiler 11 SECTION 3 START UP OPERATION Se...

Page 2: ...r local codes All electrical connections are to be made in accordance with Standard C S A C22 1 Canadian Electrical Code Part 1 and or local codes 31 NOTE SPILL ROLLOUT SWITCHES BOILER DIMENSIONS MODE...

Page 3: ...used Particular attention should be paid on all oil to gas con versions Soot may have accumulated in chimney and or degraded chimney liner Most utilities require complete chimney cleaning Others may...

Page 4: ...and locality NOTE Boiler is not for use in systems where water is replenished Minerals in the water can build up on the heat transfer surfaces and cause overheating and subsequent failure of the heat...

Page 5: ...each opening must have a minimum free area of one square inch per 1000 Btu hr of gas input NOTE Boiler employs atmospheric combustion Combustion air must not becontaminated with halogenated hydrocarb...

Page 6: ...3 All external piping must be supported by hangers not by the boiler or its accessories Proper steam piping practices must be followed at all times Maintain proper clearances between piping and combus...

Page 7: ...RELIEF _VALVE DISCHARGE J FIGURE 2 4 STEP 4 VENTING BOILER Install draft hood on boiler If the draft hood shroud has a hole near the relief opening for installing a spill switch mount draft hood so t...

Page 8: ...ntained The vent damper must be accessible for servicing and checking position indicator PRESSURE CONTROL CABLE BRACKET MOLEX CONNECTORS THERMOSTAT CONNECTION TRANSFORMER i PILOT CONTROL J THERMOSTAT...

Page 9: ...ing doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building Turn on clothes dryers and a...

Page 10: ...160 150 130 120 110 100 590 500 440 400 370 350 320 305 275 250 225 210 890 760 670 600 560 530 490 460 410 380 350 320 1 650 1 450 1 270 1 150 1 500 990 930 870 780 710 650 610 2 700 2 300 2 000 1 85...

Page 11: ...States only VGA 350B and 400B natural gas standing pilot units have a secondary pressuretrol lo cated to the right of the primary pressuretrol when fac ing the front of the boiler Connect wiring asse...

Page 12: ...erwise insulation may melt or degrade exposing bare wire NOTE Boiler transformer must not be used to power external accessories i e zone valves relays etc Otherwise transformer will be overloaded and...

Page 13: ...3 8600 e MV _ MV PV G ND 6 I 24 EN 24V _ SPAPJ 42 5702 REV 4 OPERATING SEQUENCE STEAM BOILERS EQUIPPED WITH VENT DAMPER CG 400 SERIES LWCO AND liD 1 MOTOR DRIVES VENT DAMPER TO CLOSED POSITION AND RE...

Page 14: ...NT DAMPER HI LIMIT CG 400 SERIES LWCO 1 MOTOR DRIVES VENT DAMPER TO CLOSED POSITION AND REMAINS CLOSED DURING STANDBY 2 STANDING PILOT REMAINS LIT 3 SENSING CIRCUIT IS CONTINUOUSLY MONITORED 4 THERMOS...

Page 15: ...FIGURE 2 17 WIRING DIAGRAM OPERATION SEQUENCE FOR BOILERS EQUIPPED WITH STANDING PILOT MCDONNELL MILLER LOW WATER CUT OFF SECOND PRESSURE CONTROL FOR VGA 350 VGA 400 N G OPERATING SEQUENCE FOR SREAM B...

Page 16: ...n Flue passages must be inspected by a qualified installer if this problem occurs prior to switch replacement SYSTEM START UP ADJUSTMENTS Safe lighting and other performance criteria were met with the...

Page 17: ...rclockwise to decrease gas flow decrease input In no case should final manifold pressure setting vary more than __ 3 from factory set pressures If rated input cannot be obtained with adjustment gas su...

Page 18: ...he top of the burners and enclosing the pilot 7 Find pilot Follow metal tube from gas control The pilot is J RESET BUTTON GAS CONTROL KNOB SHOWN IN OFF POSITION Honeywell VR8300 between the central bu...

Page 19: ...ructions replace dome and seal with furnace cement b If passageways need cleaning remove burners as described in paragraph 3 below Insert long handle bristle flue brush down between section tubes and...

Page 20: ...the body of the brass orifice see Figure 4 1 Size can also be checked by using a pin gauge 4 All orifices are screwed into the manifold and may be removed by using a 5 8 wrench or socket 5 Reverse pr...

Page 21: ...L H Base Ass y Side Panel L H Base Ass y Side Panel L H Base Ass y Side Panel L H Base Ass y Side Panel R H Base Ass y Side Panel R H Base Ass y Side Panel R H Base Ass y Side Panel R H Base Ass y Si...

Page 22: ...Pilot Ass y L P Q314ALB Pilot Ass y L P Q314ALB Pilot Ass y L P Q314ALB Pilot Orifice N G BCR18 Pilot Orifice L P BBR10 15 Thermocouple K16R 36 Thermocouple K16R 48 16 Manifold Manifold Manifold Manif...

Page 23: ...59 47 5O 30 31 46 45 44 32 27 34 33 26 52 51 21 13 7 10 J 15 12 14 11 2O 19 16 18 23...

Page 24: ...er Gauge 44 Nipple 3 4 X 6 45 Coupling 3 4 46 Pop Safety Valve 15 P S I 47 Flue Collector Flue Collector Flue Collector Flue Collector Flue Collector 48 5 16 18 X 6 Lg Cart Bolt 49 5 16 18 Hex Nut 50...

Page 25: ...1 54 55 Jacket Complete Jacket Complete Jacket Complete Jacket Complete Jacket Complete Manual Reset Spill Switch Rollout Switch Thermal Fuse PART NO BM 2676 BM 2677 BM 2678 BM 2679 BM 2680 58 2526 58...

Page 26: ...0M 58 Pilot Burner Assembly Q3451B1103 N G P ot Burner Assemb y L_ Pilot Orifice N G BCR18 Pilot Orifice LP BCRIO Transformer 4OVA Not Shown PART NO 02 1556 02 1554 02 1561 02 1555 02 1549 02 1550 BM...

Page 27: ...27...

Page 28: ...HydroTherm IN UNITED STATES 260 NORTH ELM ST WESTFIELD MA 01085 413 564 5515 FAX 413 568 9613 IN CANADA 7555 TRANMERE DRIVE MISSISSAUGA ONTARIO L5S 1L4 905 672 2991 FAX 905 672 2883...

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