IEC Modular Hi-Rise Series Installation, Operation & Maintenance Manual page 8

Modular Hi-Rise Series Fan Coils
compensation is not included in the unit and must be
provided. Riser end caps, air vents, and/or flushing loops
must be provided at the jobsite by the installer.
Proper field riser installation and vertical positioning in the
unit should have a pipe run-out to the service valves which
are centered in the knockout access slots and that slope
down slightly away from the riser (see Figure 6). This prevents
condensation from running back to the riser and possible
damage from dripping at the bottom of a riser column.
Each job has specific requirements and satisfying those
requirements is the responsibility of the installer.
Riser to Unit Installation
Outer
Cabinet
Riser Stubout
Insulation
Riser Knockout
Slot
Figure 6
Before making the riser joints, the riser insulation must be
pulled back away from the joint and protected from heat
during the brazing process. Each riser joint must be in vertical
alignment. 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.
Riser
Unit insulation
Ball
Valve
Threaded
Fitting
Riser to Drain Installation
8
Riser Stubout
Insulation
Ball
Valve
Connection point to any factory
furnished and installed
components.
Figure 7
Ball
Valve
Back-up
Wrench
Figure 8
Unit Insulation
Drain Pan
Riser Knockout
Drain
Clamp
P-Trap
Figure 9
1. After the applicable Supply, Return, and Drain knockouts
have been removed, carefully position the unit so that
the riser ball valves penetrate into the unit through the
riser knockouts making sure the insulation penetrates
into the unit as shown in Figures 6, 7, and 9.
Flexible
Hose Kit
Ba e
Coil
Wrench
Swivel
Connection
Unit Wall
Riser
Clamp
Riser Stubout
8