Utica Boilers MGB Series II/MGC Series 安装指导

Fire, explosion, asphyxiation and electrical shock 

hazard.  Improper installation could result in death or 

serious injury.  Read this instruction and understand 

all requirements, including requirements of authority 

having jurisdiction, before beginning installation.  

Installation not complete until appliance operation 

is verifi ed per Installation, Operation & Maintenance 

Manual provided with boiler.

  

This kit is for both natural gas and LP versions.  Pilot is 

shipped for natural gas, a conversion package is included in 

this kit.
Following instructions for installation of Q3452 Spark Pilot 

Retrofi t Kit for Series 2 Boilers. 

Follow instructions to TURN OFF GAS TO APPLIANCE 

found on Operating Instructions label on boiler or in 

Installation, Operation & Maintenance Manual. Verify all 

electrical power to boiler is turned off.

Electrical shock hazard. Turn OFF electrical power 

supply at service panel.

  

Allow boiler to cool for 30 minutes before starting 

installation.

Burn hazard.  Verify heat exchanger and igniter 

have cooled or use appropriate personal protection 

equipment before removing pilot.

  

Remove front boiler door.

Disconnect spark cables from control board.

Disconnect pilot tube from gas valve. Loosen 

compression fi tting located on top of gas valve.

Locate current pilot assembly in front of base. See 

Figure 1.

Remove top burner door and burner tubes.              

Remove two pilot mounting screws holding pilot 

assembly in place. Remove entire pilot assembly. 

If this is LP Boiler, convert pilot to LP confi guration 

using enclosed pilot orifi ce.

This step is for 2 section boiler only. Remove pilot 

assembly from box.  Bend pilot tubing as shown in 

Figure 2 (tight 180º, then 90º back) in order to get it in 

between upper and lower burner doors.  

Natural Gas spark/standing pilot assembly

1 

Pilot Assembly Mounting Screws

2

Gas Valve Compression Fitting

1

LP Pilot Orifi ce

1

Burner 
Door

Pilot 

Mounting 

Screws

Burner 

Tubes

Lower 
Front 
Panel

 P/N 240009742 Rev. A  [08/2012]