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7. Turn the assembled stack and jacket top, rightside
up. The jacket top will be trapped between the
brackets and the top of the stack. Place the stack
over the inner stack adapter panel flanged hole
and lower the louvered jacket top panel back into
its original position. Reinstall the four (4) #10 flat-
head screws removed in step 1 above.
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1. Shut-off main electrical power switch to boiler.
2. Turn heater manual switch located in upper control
panel to the "OFF" position.
3. Shut-off gas supply and water supply to the boiler.
4. Mount drafthood on top of boiler as shown in Fig.
12. Drafthood should be positioned with the vent
sensor located on the front right side as shown.
5. Remove plastic plug from left side of boiler jacket
and install plastic grommet provided.
6. Route flue sensor wire harness through the grom-
met installed in Step 5.
7. Remove door and locate wire from roll-out sensor
to high limit with the male/female connector.
8. Disconnect male/female connector and attach to
the 2 wires from drafthood vent sensor harness.
Fig. 10: Indoor Installation—Models 181-401 & 182-400
Fig. 11: Boiler Before Drafthood Installation—Models
181-401 & 182-400
Fig. 12: Boiler After Drafthood Installation—Models
181-401 & 182-400
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Locate and assemble as shown in Fig. 13. Secure with
screws supplied in envelope in carton.