Rheem 27 Owner's Manual And Installation Instructions page 68

FLUEING
16. A horizontal run of flue between two bends, where the bend closest to the flue terminal is orientated
upward, must have a gradient upward in the direction of the flue terminal.
The Adjustable Straight Length (PN 295127) may be required if a special length is required between
17.
offsets or changes in direction of the flue or to ensure the outer skin of the Horizontal Flue Terminal
extends a minimum of 75 mm from the face of the external wall.
The Adjustable Straight Length can be adjusted from 560 mm to 890 mm by pulling on its end to
increase its length or pushing on its end to decrease its length.
Fit a Trim Ring over the last section of flue prior to penetrating the wall.
18.
Once the flue is assembled and penetrating the wall, install the Horizontal Terminal and secure the
19.
termination to the flue using the sheet metal screws provided.
Note: If the flue terminal position is more than 1800 mm above a safe working surface, then suitable
equipment will be required to enable safe access to fit the flue terminal.
Alternatively, the flue terminal may be fitted to the flue
assembly prior to the assembly penetrating the wall.
Make a final adjustment to the Adjustable Straight
20.
Length, if required, to ensure the end of the outer skin of
the flue terminal extends a minimum of 75 mm from the
face of the external wall.
Firmly tighten the compression band on the
Adjustable Straight Length to prevent the pipe from
extending or compressing its length over time.
21. Apply an adequate bead of sealant around the flue assembly and exterior wall of the building, using a
general purpose silicone sealant suitable for outdoor application.
Failure to properly seal the flue penetration through the wall will result in long term damage due to
weather conditions.
Apply an adequate bead of sealant on the rear face of a Trim Ring, using a general purpose silicone
22.
sealant suitable for outdoor application.
Fit the Trim Ring over the flue terminal and press against the wall.
23. Apply an adequate bead of sealant around the flue assembly and interior wall of the building and on the
rear face of the Trim Ring, using a general purpose silicone sealant suitable for indoor application.
Press the Trim Ring against the wall.
24. Upon completion of the secondary flue installation, remove the warning label adhered to the top left
hand corner of the water heater's front panel.
Refer to "Connections – Electrical"
for the commissioning details of the water heater.
on page 74 electrical connection details and
68
"Commissioning" on page 86