Williams 4505621 Instruction Manual download pdf (Page 11)

Installation (cont.)

22. Check the vent or chimney performance by holding a

match near the edge of the drafthood as shown in Figure

12. If the flame is not pulled into the drafthood, the

chimney is not providing sufficient draft. This can allow

hazardous gases to escape the vent system. Find and

correct the causes of this malfunction.

23. Replace the grille on top of the furnace. The small clip

attached to the chain at the limit switch box should be

hung over a section of the grille so it can be used to

override the limit switch as described in the "Operating

the Furnace" section of this manual. Explain the

operation of the furnace to the homeowner and give

these instructions to the homeowner.

FIGURE 9

1 1/8" TO 1 I/4"

-- _N_ATOR

PROPER FLAME

ADJUSTMENT

PILOT

1/4"m _/8"

FIGURE 11 /_ [

FIGURE 12

FIGURE 10

DRAFTHOOD_. /- DRAFTHOOD

COLLAR \ /COLLAR GASKET

___

..... /

(OPEN SIDE ""'_I , - --_:'_-- " I

CHAMBER \

ASSEMBLY _

FLUE OUTLET

FLUE ---- I

OUTLET

o. .........

DRAFTHOODJ _- DRAFTHOOD

COLLAR

ASSEMBLY COLLAR GASKET

PLAN VIEW

-UFURNACE

TER CASING

I I I

_- COMBUSTION

CHAMBER

ASSEMBLY

-11-

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 19 20

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Williams 4505621 Instruction Manual Page 11

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