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18
ENG
“ultimateSAM - user” +03U0070EF - rel. 3.0 - 20201120
3. DRAIN CONNECTIONS
3.1 Installing P-traps on header drains
A condensate trap should be installed on the ¾” pipe connection provided
on the bottom of each header. The connection is ¾” male NPT for North
American markets and ¾” Gas for the other regions (for the SA0 single-pipe:
½“ GAS or ½“ NPT). Given the minimal pressure inside the header, a P-trap is
generally suitable for the header drains. The fittings and pipe for the P-trap
(shown in Fig.3.a) are not included with the ultimateSAM distributor.
If P-traps are used on the drains, the seal height should be sufficient such
that the water column creates a pressure at least 500 Pa (50 mm or 2” H2O)
greater than the static pressure in the header. (Refer to the design manual
for more information on static pressure of the header.) While a seal height
of 150mm (6”) is adequate for most installations where the condensate trap
drains into a sump inside the duct, check the design manual for details on
the back pressure generated by distributor being installed.
Note : Check local requirements regarding the minimum
recommended seal height and drop height for the installation.
SAB/SAT Models
Drop
Height
Seal Height
Fig. 3.a
SA0 Models
Drop
Height
Seal Height
Fig. 3.b
Note: The fittings and pipe for the condensate drain shown in Fig.3.a
and 3.b are not included with the ultimateSAM distributor.
If the P-trap empties outside the duct or AHU as shown in Fig.3.a, the seal
height and drop height must allow for the static pressure inside the duct
or AHU in addition to the static pressure in the header. If the space limits
the seal height for the condensate drain, a different type of trap, e.g., F&T
(float and thermostatic) trap could be used, or a distributor having a lower
backpressure could be selected.
3.2 Trap, strainer, and separator kits
for distributor inlets connected to
pressurized steam supplies
For installations in which the ultimateSAM distributor is supplied with
pressurized steam, a trap and strainer are required at the inlet of the control
valve. A variety of trap and strainer kits are available as accessories. (Fig.3.b-c)
1
3
4
2
Fig. 3.c
2
3
4
1
Fig. 3.d
 Actuator
 Valve
 Y Strainer/Filter

Float and Thermostatic trap
The system for identifying trap, strainer, and drain accessories is shown in
Table 3.a.
Note: Not all of the possible combinations shown on the table are
available.