IM 1287-4 • REBEL APPLIED ROOFTOP 62 www.DaikinApplied.com
Unit Operation
Steam Supply Line Connection
shows the pipe connection sizes.
Table 13: Humidifier Connections Sizes
Number
of tubes
Tube
Steam
Steam
inlet size
Drain
outlet size
4
Insulated
A
tmospheric
4" oD
1/2" Npt
4
Insulated
p
ressureizeD
(sKD)
1-1/2" Npt
1/2" Npt
4
u
NiNsulAteD
A
tmospheric
4" oD
1/2" Npt
4
u
NiNsulAteD
p
ressureizeD
(sKD)
1-1/2" Npt
1/2" Npt
6
Insulated
A
tmospheric
5" oD
1/2" Npt
6
Insulated
p
ressureizeD
(sKD)
1-1/2" Npt
1/2" Npt
6
u
NiNsulAteD
A
tmospheric
5" oD
1/2" Npt
6
u
NiNsulAteD
p
ressureizeD
(sKD)
1-1/2" Npt
1/2" Npt
8
Insulated
A
tmospheric
5" oD
1/2" Npt
8
Insulated
p
ressureizeD
(sKD)
1-1/2" Npt
1/2" Npt
8
u
NiNsulAteD
A
tmospheric
5" oD
1/2" Npt
8
u
NiNsulAteD
p
ressureizeD
(sKD)
1-1/2" Npt
1/2" Npt
10
Insulated
A
tmospheric
5" oD
1/2" Npt
10
Insulated
p
ressureizeD
(sKD)
1-1/2" Npt
1/2" Npt
10
u
NiNsulAteD
A
tmospheric
5" oD
1/2" Npt
10
u
NiNsulAteD
p
ressureizeD
(sKD)
1-1/2" Npt
1/2" Npt
12
Insulated
A
tmospheric
5" oD
1/2" Npt
12
Insulated
p
ressureizeD
(sKD)
1-1/2" Npt
1/2" Npt
12
u
NiNsulAteD
A
tmospheric
5" oD
1/2" Npt
12
u
NiNsulAteD
p
ressureizeD
(sKD)
1-1/2" Npt
1/2" Npt
14
Insulated
A
tmospheric
5" oD
1/2" Npt
14
Insulated
p
ressureizeD
(sKD)
1-1/2" Npt
1/2" Npt
14
u
NiNsulAteD
A
tmospheric
5" oD
1/2" Npt
14
u
NiNsulAteD
p
ressureizeD
(sKD)
1-1/2" Npt
1/2" Npt
shows proper installation of supply line connections.
Figure 118: Humidifier Supply Line Installation
Follow the below general installation rules in order to
avoid any condensation accumulation which can cause
severe water accumulation in the duct or a humidifier
malfunction .
IMPORTANT
Risk of malfunction. Avoid kinks, sags and areas where condensate
can become trapped. Plumbing installation should conform to Local and
National Codes.
Figure 119: Proper and Improper Installation Examples
1.
The slope of the steam hose (rigid or flexible) should
not be less than 15% (7 horizontal lengths for 1 vertical
length) in order to ensure continuous drainage of
condensation back to humidifier or to steam trap.
2. The lowest point of any steam hose or rigid pipe must be
the humidifier. If necessary, a steam trap (S Type) should
be installed higher than the static pressure of the system
by at least 2 inches (51mm).
3. Total length of the steam hose or rigid pipe should not
exceed 15 feet (5 meters). Longer runs will result in
Summary of Contents for Rebel Applied DPSA
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