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Upgrading the hex hose coupler, Removing the hex hose coupler, Replacing the hex hose coupler – HP 403349-003 User Manual

Page 132

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Upgrading procedures 132

12.

Using a T-25 Torx driver, insert and tighten three screws on each side of the bottom cover plate.

13.

Turn the HEX unit right-side up, so it is sitting on the bottom cover plate.

14.

Replace the heat exchanger unit ("

Replacing the heat exchanger unit with couplers

" on page

63

).

15.

Replace the air deflector plate ("

Replacing the air deflector plate

" on page

34

).

16.

Replace the fan unit ("

Replacing the fan unit

" on page

52

).

Upgrading the HEX hose coupler

The HEX hose coupler is a component of the HEX unit with ball valves that connects the HEX unit to the

main water lines.
The following tools are required for installation:

Adjustable wrench

Knife

T-25 Torx driver

Removing the HEX hose coupler

NOTE:

For this procedure, remove the fan unit seated directly behind the heat exchanger unit

you will remove.

1.

Remove the fan unit ("

Removing the fan unit

" on page

51

).

2.

Remove the air deflector plate ("

Removing the air deflector plate

" on page

33

).

3.

Remove the heat exchanger unit ("

Removing the heat exchanger unit with couplers

" on page

59

).

Replacing the HEX hose coupler

1.

Verify that the ball valves inside the HEX unit and the ball valves on the hose assemblies are closed,
with the handles perpendicular to the valves.