Installation guide

Page 46 • DRI-STEEM GTS Humidifier Installation, Operation, and Maintenance Manual
Rapid-sorb pitch requirements
• When installing Rapid-sorb with the header outside a horizontal
airflow duct, consider the following pitch issues:
– For 1½" (DN40) dispersion tubes, use a fastener of sufficient
length to accommodate the 1/8"/ft (1%) pitch requirements
toward the ¾" pipe thread (DN20) header drain fitting.
– For 2" (DN50) dispersion tubes, the bracket can be mounted
flush to the ductwork. The 1/8"/ft (1%) pitch typically can be
accomplished in the length of the hose cuffs used to connect
the tubes to the header.
• See the table below and the drawings on the following pages for
pitch requirements.
Table 46-1:
Pitch of interconnecting piping, dispersion tubes, and headers for Rapid-sorb evaporative dispersion units
Airflow
Type of
interconnecting piping
Diameter of
interconnecting piping
Pitch of
interconnecting piping
Pitch of
dispersion tubes
Pitch of
header
Horizontal
Vapor hose 1½" (DN40), 2" (DN50)
2"/ft (15%)
toward
Rapid-sorb
Vertically
plumb
1/8"/ft (1%)
toward
condensate
drain
Tubing or pipe
1½" (DN40), 2" (DN50),
3" (DN80), 4" (DN100),
5" (DN125), 6" (DN150)
1/8"/ft (1%)
toward
Rapid-sorb
Vertical
Vapor hose 1½" (DN40), 2" (DN50)
2"/ft (15%)
toward
Rapid-sorb 2"/ft
toward
header
1/8"/ft (1%)
toward
condensate
drain
Tubing or pipe
1½" (DN40), 2" (DN50),
3" (DN80), 4" (DN100),
5" (DN125), 6" (DN150)
1/8"/ft (1%)
toward
Rapid-sorb
Dispersion:
Rapid-sorb
Installation