Steel Rail Installation; Roof Curb Assembly And Installation - Daikin Rebel DPS Series Installation And Maintenance Manual

Steel Rail Installation

Rebel units may be mounted directly on steel support beams.
Verify that the structure has the ability to properly support the
weight of the unit. Support must be around the entire perimeter
of the air handling section with the base of the unit centered
and completely supported.
Local installers have the discretion, if they wish, to support
the condenser section or allow it to be cantilever-mounted
on Rebels DPS 003 – 015. Rebel units DPS 016 – 028 must
be supported for the entire base perimeter including the
condenser section.
Daikin does allow welding of the base of the unit directly to the
structural steel supports.
IM-1125-13 • REBEL ROOFTOPS

Roof Curb Assembly and Installation

Mold can cause personal injury . Some materials such as gypsum
wall board can promote mold growth when damp. Such materials must be
protected from moisture that can enter units during maintenance or normal
operation.
Locate the roof curb and unit on a portion of the roof that can
support the weight of the unit. The unit must be supported to
prevent bending or twisting of the machine.
If building construction allows sound and vibration into
the occupied space, locate the unit over a non-critical
area . It is the responsibility of the system designer to
make adequate provisions for noise and vibration in the
occupied space .
Install the curb and unit level to allow the condensate drain to
flow properly and allow service access doors to open and close
without binding.
The gasketed top surface of the curb seals against the unit
when it is set on the curb. These flanges must not support
the total weight of the duct work. See
page 15 for details on duct connections. It is critical that
the condensate drain side of the unit be no higher than the
opposite side .
Assembly Instructions
Assembly of a typical roof curb is shown in
on page 8 and Figure 4 on page
1 . Set curbing parts A thru G per dimensions shown over roof
opening or on a level surface. Note location of supply air
opening. Check alignment of all mating screw holes.
2 . Screw curbing parts together using fasteners provided.
Leave all screws loose until curb is checked to be square.
3 . Square entire curbing assembly and securely tighten all
screws.
4 . Position curb assembly over roof openings. Curb must
be level within 0.25 inches from side to side and 1.50
inches over its length. Check that top surface of curb is
flat with no bowing or sagging.
5 . Weld curb assembly in place. Caulk all seams watertight.
Remove backing from 0.25 × 1.50 wide gasket and apply
to surfaces shown by crosshatching.
6 . Check that electrical connections are coordinated and
installed in accordance with all applicable local and NEC
codes.
6
Mechanical Installation
WARNING
Installing Ductwork on
Figure 2, Figure 3
9 .
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