2
III. INSTALLATION
IMPORTANT:
DO NOT use a wrench on the valve body of
the drain. Tighten using wrench flats on top
of drain only. The valve body should never be
turned once it is installed. If it is turned, the
float arm may become restricted and will not
operate.
B. Install drain vertically to ensure proper float
operation.
C. Connections:
1. Inlet line
a. Inlet line should slope downwardly
to drain inlet to allow condensate to
flow into the drain by gravity.
b. Strainers to protect the drain from
undue particulate contamination
and isolation valves to permit quick
and easy drain servicing are useful
additions to the inlet line.
c. The inlet pipe to the drain should
not be smaller than the inlet con-
nection so that drainage is not
restricted (avoid piping “pockets”).
A. Preparation:
1. All Models: Remove inlet and drain
thread protectors.
2. Bottom Connection Models: Bushing
and compression fitting are shipped
loose in carton. Install these items
in fitting on top of drain before
installation. Refer to Figure 2.
2. Drain Line
While it is not always necessary, a drain
line is normally recommended in order
to keep condensate from spraying into
the area in front of the discharge port.
NOTE: In many cases condensate
contains oil. Check regulations in your
area for proper disposal methods for
oil contaminated condensate
a. Tubing (min. 3/8" O.D.) or piping
(min. 1/4") may be run from the
drain connection (1/4" FPT) to an
adequate sump or floor drain,
preferably below the level of the
drain.
b. Do not put a valve in the drain line
or obstruct the discharge of the
condensate in any way (such as
with severe bending of drain line).
c. Drain discharges condensate at
system pressure; the drain line
should be anchored to prevent
movement.
3. Vent Line
Vent lines are required on all bottom
connection drains and on top connec-
tion drains only where upward sloping
inlet lines form a water trap.
a. Bottom connection drains: Bottom
inlet connection drains must be
vented by running 1/4" O.D. tubing
from the compression fitting on
the top of the drain to a place in
the system where there is pressure
equal to the pressure in the device
being drained. See Figure 3.
b. Top connection drains: It is
normally not necessary to vent
top connection drains. See Figure
4. However, if an upward sloping
drain line is unavoidable, a vent line
is necessary. See Figure 5.
FIGURE 1
NEVER tighten by using wrench here
Use Wrench Flats to tighten
Bushing
FIGURE 2
Bottom Connection Models Only
Vent line connection 1/4"
Compression fitting
FIGURE 3
Installation of Bottom Connection Drains
1. Inlet Line
2. Drain Line
3. Vent Line
FIGURE 5
Installation for Top Connection drains with
upward sloping drain lines only
1. Vent line
2. Inlet Line
3. Drain Line
1
1
2
2
3
3
1
2
1
2
FIGURE 4
Normal Installation for Top
Connection Drains
1. Inlet Line
2. Drain Line
