Weil-McLain EVERGREEN PRO EVG-220 User Manual

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Part number 550-100-211/0122

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 (continued)

Figure93 Accessing burner, ignition electrode, ame

sense rod and inspection glass assembly

(EVG 220 shown)

LEGEND— Figure93PARTSAandB

A Boiler interior assembled view (Model EVG220 shown;

component locations vary with other models)

B Boiler interior exploded view, showing heat exchanger

cover plate (item6) blower, burner assembly, burner access

cover seal (item13), ignitor, ame sense rod, and sight

glass.

1 Inlet air silencer

2 Blower assembly

3 Gas valve

4 Burner access cover

5 Venturi assembly

6 Heat exchanger cover plate

7 Ignition electrode assembly

8 Flame sense rod

9 Heat exchanger cover plate retainer nuts (6) M6 hex

10 Burner cover retainer screws, M4 Phillips with captive

washers

11 Burner

12 Burner gasket

13 Burner access cover seal

14 Burner gasket sealing surface

15 Burner sealing surface (lower surface of burner ange)

c. Make sure there are no signs of overheating or of ue

gas leakage.

If visual inspection of the heat exchanger indicates

the need, follow the procedures in “Cleaning

the heat exchanger FLUE SIDE or accessing the

burner, when required” on page111 to remove

the heat exchanger cover plate and fully inspect

and clean the interior. Obtain replacement parts

for any components that may be damaged or that

show signs of leakage.



1. Reinstall the burner.

a. Insert a new burner gasket (item12) into the heat exchanger

cover plate (item4).

b. Insert the burner into position.

c. Insert the burner access cover seal into the heat exchanger

cover plate.

d. Place the burner access cover (item4) into position and

secure the four screws (item10).

2. Reinstall ignition electrode assembly and gasket, making

sure that it is correctly positioned. Tighten the two (2) screws

securely.

a. Re-attach igniter cable and ground wire to the ignition

electrode assembly.

3. Reinstall ame sense rod assembly and gasket, making sure that

it is correctly positioned. Tighten the two (2) screws securely.

a. Re-attach the wire to the ame sense rod.

4. Reinstall the burner access panel and air baffle (see

Figure92,page96). Tighten screws securely.

220 /29 9/3 00 /39 9 

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Weil-McLain EVERGREEN PRO EVG-220 Gas Boiler Evergreen High Efficiency Gas Boiler

User Manual - Page 98