Rinnai HD28E Operation & Installation Manual page 15

Wall mounting or floor mounting of the heat source is possible.
Wall mounting - drill holes in the wall in the desired location and mount the frame to the wall using suitable fixings.
A useful nominal height is 1500mm (height of the frame) from floor level. This is subject to site requirements, the
desired location of the flue terminal in reference to AS/NZS5601 (refer to page 10) and service accessibility. If
you are installing an internal plant, flue design and the associated wall or roof penetrations need to be considered
as the centre distance between the heaters varies depending on which heater is being installed. Refer to the
drawings and specifications section on page 17 for dimensional information.
Floor mounting - you will require the appropriate number of DDBASE supports to enable suitable floor mounting.
DDBASE requires some minor assembly using the brackets and fixings provided. Every module of either 2 or 3
heaters requires one DDBASE and it is recommended to assemble the DDBASE to the heat source module(s) prior
to joining the pipework. The heat source can also be installed in a back to back configuration using DDFJOINKIT.
Again if you are installing an internal plant, flue design and the associated wall or roof penetrations need to be
considered as the centre distance between the heaters varies depending on which heater is being installed. Refer
to the drawings and specifications section on page 17 for dimensional information.
When passing the flues through the mounting wall, it may be necessary to attach them to the
water heater before securing the water heater to the wall.
NOTE
Specifically engineered systems mounted on a skid base do not require any assembly of the heat source unless it
has been split purely for transport purposes. If this is the case the pipe connections will be marked up accordingly
to aid the assembly process.
Manifold Packs have a staging system consisting of either a Manifold Electronic Control System (MECS) or
Cascade System. MECS and Cascade are sophisticated electronic control systems that are supplied pre-wired
except for the module connections. Refer to the separate installation booklet supplied for full details on how to
connect each heater control.
Rinnai
INSTALLATION INSTRUCTIONS
Optional Base
(DDBASE)
15 Commercial Manifold Pack OIM