Des Champs Technologies | 2 Nikki Lane | Natural Bridge Station, VA 24579
| Ph: 540-228-1967
Page | 2
RLC IOM Aug 31 17
Positive-Pressure Application
The Series RLC maximum operating positive pressure
is 3.0 inches wc. If the positive pressure is expected to
be greater, then a P-Series
Air-Trap
for up to 12 inches
wc or an engineered
Air-Trap
for any positive pressure
above 12 inches wc should be used.
.
Always connect the drain line leaving the drain pan
directly to a trap to ensure proper drainage of water
while simultaneously preventing unwanted air from
entering or leaving the HVAC equipment.
Important:
If there is a possibility of items such as
screws, gravel, etc. falling into the drain line then install
a strainer screen, as shown in Figure 1 over the drain
inlet prior to operation of the HVAC unit and before
installing the trap. An integral Union-Strainer™(also
available from Des Champs Technologies LLC, see
Figure 5)
may also be inserted in the drain line
upstream of the
Air-Trap
.
1. Install the RLC-SERIES
Air-Trap
vertically with
the embossed arrowhead pointing upward
(see Fig. 4). This is a requirement for proper
movement of the internal float valve component.
2. Install the trap in accordance with manufacturer’s
instructions and with all applicable local or national
plumbing, drainage, and mechanical codes.
3.
NEVER CONNECT CONDENSATE DRAIN
DIRECTLY TO A SANITARY DRAIN LINE.
4. Connect only to a storm drain or a condensate
drain line. This product is to control flow of
condensate produced by HVAC equipment and is
not
to be used on kitchen sinks, showers, or in
any application where a fan is not creating a
negative or positive pressure.
Operation in Vertical, Positive Pressure Mode
The RLC
Air-Trap
operates dry when no water
removal is required and wet when it is required. When
dry, essentially no air exits the HVAC unit. When
removing water, the water exits the unit, but essentially
no air exits the unit through the drain connection.
Install the
Air-Trap
in a vertical orientation.
With no
production of condensate within the AHU, the positive
pressure that exists within the unit plenum that
contains the drain line forces the ball valve downward
onto the valve seat. With the production of water, the
ball rises from the seat when the net buoyancy force
upward equals or exceeds the net downward force
created by air pressure. See view in
Figure 3
.
The RLC SERIES
Air-Trap
accomplishes the
following:
•
Reduces sludge buildup that normally
accumulates in standard P-traps
•
Prevents freezing of trap during cold periods
since during periods of no water removal there
is no water in the trap. If, for some reason,
water is flowing from the unit during freezing
temperatures, and the trap is located within this
freezing temperature region, then the trap will
require thermal protection.
•
RLC-Series
Air-Trap
requires no water head to
cause the trap to operate. Simply come out of
the plenum with the condensate line and go
down into the
Air-Trap
. Come out of the trap
and go horizontally with your drain line. The
height, x, requirement then becomes the height
of the trap plus two street elbows which totals 6
inches.
See
Figure 2.
•
Eliminates air escaping from an HVAC unit that
would result when a standard P-Trap
experiences a “dry-out” condition.
•
Note: If there is a possibility of a syphoning
effect (suction pressure) at the exit point of the
Air-Trap
then it is necessary to install a vertical
vent pipe as close as possible to the bottom of
the trap (see
Figure 4
).
CAUTION
Failure to provide adequate
drainage piping may result in
water damage to equipment or
building.
Place stainless steel filter
screen, Figure 1, over drain
inlet
or install a
Union-Strainer™, see Figure 5
upstream of the trap.
Figure 1: Strainer Screen
Figure 2: RLC-Series
Air-Trap
Installed Vertically for
Positive Pressure Application
X
