Weil-McLain EGH-105, EGH-125 manual Installation, Gas train assembly

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EGH-105 to EGH-125 Control Supplement

I

Place the boiler

Install gas train

Install vent/breeching

Figure 1

Gas train assembly

Installation

Refer to the EGH Manual. Read Section I and follow all of its guidelines. Complete the following steps of Section I of the EGH Manual:

Placing the boiler

Installation of optional water heaters, steam boilers only (including pages 13–14)

Hydrostatic pressure test

Installation of flue collector hood

Installation of (burner) drawer assembly and front access panel and back base channel

Jacket installation

Draft hood installation

Connect gas train assembly to burner manifold:

Apply pipe dope to 1" nipple for insertion into burner manifold coupling (Figure 1, item 1). Insert and tighten nipple.

Pipe lower half of ground joint union to the 1” nipple (Figure 1, item 2).

Knock out the jacket gas valve opening on the desired side of the boiler (may be routed through either right or left side).

Place gas train in position (either routed to the left, as shown, or to the right) and tighten the ground joint union loosely. Position the gas train assembly and tighten the union.

Connect vent lines (routed to outside per code requirements) to ¼" tubing vent connections on main gas valve and pilot gas pressure regulator (Figure 3, item 3).

Connect pilot gas tubing (1/8" aluminum) to adapter in pilot gas valve outlet (Figure 1, item 4).

Crimp connect two ¼" spade terminals (provided) to ends of pilot gas valve wires (Figure 1, item 5).

Install vent system and breeching per EGH Manual Section I. If optional vent damper is used, install vent damper (using Section I of this Supplement) before installing breeching.

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677-09

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Part Number 550-110-677/0299

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Contents Control Supplement Please read this page first Carton guide Boiler cartonsInstallation Gas train assemblyInstall optional vent damper if supplied Vent damper assembliesII Piping connections III Install boiler controls water boilersWater boiler connections IV Optional heaters steam boilers only III Install boiler controls steam boilersSteam boiler connections VI Wiring Gas pipingVI Wiring sequence of operation Call for heatWiring water boilers Water boiler wiringSchematic Wiring Diagram VI Wiring water boilers Control assembly water boilerCSD-1 control panel VI Wiring steam Gravity returnSchematic Wiring Diagram Control assembly steam, gravity return 13aCSD-1 control panel Pumped return Schematic Wiring Diagram Control assembly steam, pumped return Terminal strip VII Final adjustments Before proceeding To place boiler in operationVII Final adjustments operating instructions Operating instructionsViii Check-out procedure operation Viii Check-out procedure leak test Leak test procedureViii Check-out procedure troubleshooting Verify proper operation after servicingReplace pilot assembly TS-2 No Spark System boiler with vent damper does not work Not OK TS-3 Pilot lights Main valve will not come on from previous IX Service and maintenance Replacement parts water boilers Water boiler assemblyWater boiler replacement parts RV20VLReplacement parts steam boilers Steam boiler assemblySteam boiler replacement parts RV20VLWeil-McLain Blaine Street Michigan City,