IEC Modular Hi-Rise Series Installation, Operation & Maintenance Manual page 16

Modular Hi-Rise Series Fan Coils
or gain. All of the risers including the riser stubouts should
be properly covered with insulation. Internally mounted
chilled water piping and valves are located over the drain
pan and need not be insulated.
Any fireproofing requirements where risers or piping
penetrate floors or walls are the responsibility of the
installer. This work should be done only after all pressure
testing is completed. The fireproofing method used must
accommodate pipe expansion and contraction and the
piping must be protected from abrasion and chemical attack.
The pipe insulation also must be maintained to prevent
sweating and must be protected from wear or erosion at the
joint between the insulation and the fireproofing material.
When no risers are ordered for the Mega Modular unit, it is
the responsibility of the installer to make sure that a field
supplied isolation ball valve is installed between each supply
and return piping connection to the unit. Flare fittings are
factory provided to allow connection between the ball valves
and the hoses.
Variations in floor-to-floor dimensions may require field work
such as cutting off or extending the risers. This operation is
the responsibility of the installer. The riser joint filler material
must be selected to withstand the total operating pressure
(both static and pumping head) to which the system will be
subjected. Low temperature lead alloy solders such as "50/50"
and "60/40" are normally not suitable.
Chilled water and hot water risers should never be piped
to drain down into the condensate riser. Extensive water
damage can occur due to drain overflow. Drain chilled and
hot water risers to a remote location away from the unit such
as sink, room and floor drains.
All installations should be made in compliance with all
governing codes and ordinances. Compliance with all
codes is the responsibility of the installing contractor.
Unit Knockout Locations (Typical)
SIDE VIEW
Side Supply Air
Knockout
(1 per side)
Figure 21
TOP VIEW
Electrical
Knockouts
Figure 22
Supply Air Installation
Figure 23
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Optional
Supply
Plenum
Mega Mod
Cabinet
Top Supply
Air Knockout
Knockout Tab
(10 places)
Duct Break
(4 places)
Knockout Tab
Trim Line
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