B065165 1 03_114 RBOX05 IM Issue 3 040620
GENERAL INFORMATION
Recess Box RBOX05 (fully recessed) / RBOX05 + RBOX02F (semi-recessed) ts these Rinnai Water Heaters:
INFINITY 32 ENVIRO PLUS HD210e INFINITY ENVIRO 32 INFINITY ENVIRO 26
REU-N3237W REU-N3237WC REU-KM3237WD REU-KM2635WD
INSTALLATION METHOD
1. Preparation of opening in brickwork:
Height 1020–1050mm, width 495–530mm, minimum depth for a fully recessed installation is 230mm and the
minimum depth for a semi-recessed installation is 140mm. (If the depth is less than 140mm the box is to be
installed with the semi-recessed frame RBOX02F).
The Rinnai Recessed box can either be tted as the brickwork is being laid using the fold out brick ties to
secure the box, or in an existing installation, cut an opening in the brickwork and x the box by drilling holes
in the sides and x in position with suitable ush headed masonry anchors.
2. Semi-Recessed installation using (RBOX02F). Assemble the frame components with screws supplied,
utilising the pre-drilled holes located in each corner of the frame components. Slide the assembled frame
onto the recess box from the rear and secure to the outer frame ange with screws supplied, utilising the pre-
drilled holes 2 of each are located on each side.
3. The gas, cold water inlet and hot water outlet pipes can be brought through the pipe entry holes in the bottom
panel of the box.
The Rinnai water heater serial number and model number on the data plate located on the left
hand side of the appliance, and MUST be copied to the sticker on the inside of the access panel.
The serial number is needed for any warranty or service work.
4. Secure the bracket with the 5mm stud inside the top of the recess box. Facing the stud to the front of the
recces box.
5. Each recess box is supplied with a right-angle bracket that has 3 small holes on the horizontal tab and a key-
way on the vertical tab. This bracket is to attach the appliance to the 5mm stud in the top of the recess box.
Remove the three screws located on the top of the water heater and use these to x the bracket to the top of
the water heater.
6. Hang the water heater on the top bracket over the stud in the top of the recess box and secure with a suitable
fastener.
7. Ensure the lower bracket is located on the 5mm stud on the back panel of the recess box and secure with a
suitable fastener.
8. When tting the front access panel use a screw driver to
bend out the tab retaining slots to 90° as shown in Fig. 1.
9. An approved weatherproof electrical GPO can be tted
either inside the recess box, or can be tted adjacent
to with the power lead brought through the gap at the
bottom of the access cover.
10. Follow the Testing and Commissioning Procedure contained in the Commissioning Instructions located in the
pouch behind the front panel of the water heater unit.
11. Seal all gaps inside the recess box with Silicon Sealant to prevent water from entering the wall cavity.
12. Tighten nuts to secure the appliance.
13. Ensure the warning sticker on the front panel is visible when the appliance is installed.
If you require any further information, please contact Rinnai.
Continuous Flow Water Heater
Recess Box RBOX5 / RBOX5+ RBOX02F Installation Instruction
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