Pentair ETi 400 Guia De Instalacion página 9

Replacing Combustion Blower
10. Remove the four 5/16-18 hex nut from the blower
adapter and slide the blower outward through the
studs of the blower adapter, see Figure 3.
11. Remove and discard the blower gasket and
unscrew the four 4x10 MM torx screws.
12. Replace the blower adapter, install the new blower
adapter and secure it to the heat exchanger with
the four 4x10 MM torx screws.
13. Install the new blower gasket onto the blower
adapter. Be sure the gasket is aligned properly on
the blower adapter, see Figure 4.
14. Remove the short section of ¾" NPT pipe from the
blower and install it to the new blower using pipe
paste.
15. Remove the air orifice from the blower being
replaced and install it into the new blower and
secure it with the 10-16 screws.
16. Detach the air flow switch from the blower being
replaced and install it onto the new blower and
secure it with 6-32 screws.
17. Install the blower by sliding the flange holes through
the blower adapter studs. Secure the blower with
the four 5/16-18 hex nuts.
18. Reconnect the wires to the air flow switch and the
wires to the blower at the connector.
19. Install the new plastic tubing (included in the kit) to
the air flow switch, blower and gas valve, see
Figure 5.
Continue to next page.
(Continued)
ETi 400 High Efficiency Heater Combustion Blower Replacement Kit Installation Guide
Figure 3.
Figure 4.
Figure 5.
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