Ambient Air Temperature; Location And Clearance; System Arrangement; Piping And Connections - Ingersoll Rand HRD Serie Manuel De Instrucciones

Ambient Air Temperature

Locate the dryer under cover in an area where the am-
bient air temperature is between 35°F and 120°F.

Location and Clearance

Install the dryer on a level pad. The dryer is provided
with a minimum -inch diameter anchor bolt holes.
5
8
For dryers HRD56 through HRD600, anchor the dryer
to the floor with four ½-inch diameter bolts with a
minimum 4-inch thread engagement. For dryers
HRD800 and larger, anchor the dryer to the floor with
four ¾-inch diameter bolts with a minimum 6-inch
thread engagement. Allow 24 inches clearance on all
sides of the dryer for servicing. Provide adequate
clearance for prefilter and afterfilter element replace-
ment. Provide protection for the dryer if it is installed
where heavy vehicles or similar portable equipment is
likely to cause damage.

System Arrangement

Install the dryer downstream of an aftercooler and sep-
arator so that the dryer inlet air is between 60°F and
120°F and contains no liquid water. Liquid water
and/or inlet air temperatures above 100°F can reduce
drying capacity. Contact your local distributor for in-
formation on proper dryer sizing at elevated inlet air
temperatures.
Oil contaminates the desiccant, reducing drying effi-
ciency and desiccant life. An oil-removing filter is in-
stalled at the dryer inlet to protect the desiccant from
oil contaminants. A particulate filter is installed after
the dryer to remove dirt and other solid particles.

Piping and Connections

All external piping must be supplied by the user unless
otherwise specified. Refer to Table 1 for connection
sizes. Inlet and outlet manual shutoff valves and a vent
valve are recommended so the dryer and filters can be
isolated and depressurized for servicing. Refer to Fig-
ure 1 for recommended piping layout. The connections
and pipe fittings must be rated for or exceed the maxi-
mum operating pressure given on the dryer data plate
and must be in accordance with industry-wide codes.
Table 1
CONNECTIONS
Connections
(with Filters)
Model
(inches)
Inlet Outlet
HRD56 ¾ NPT
HRD100 1 NPT ¾ NPT
HRD160 1¼ NPT
1-2
Connections
(without Filters)
(inches)
Inlet Outlet
½ ¾ NPT 1 NPT
1 NPT 1 NPT
1 1 NPT 1 NPT
Connections
(with Filters)
Model
(inches)
Inlet Outlet
HRD200 1½ NPT 1¼ NPT
HRD275 2 NPT 1¼ NPT
HRD350 2 NPT
HRD475 2
HRD600 2½
HRD800 3 NPT 2½ NPT
HRD1000 3 NPT
HRD1200 3 NPT
HRD1450 3
HRD1710 4
HRD2010 4 FLG
HRD2250 4 FLG
HRD2600 4 FLG
HRD3250 6 FLG
Be sure all piping is supported. Do not allow the
weight of any piping to bear on the dryer or filters.
Piping must be the same size as or larger than the
dryer connections. Piping smaller than the dryer con-
nections will cause high pressure drop and reduce dry-
ing capacity.
If the purge exhaust muffler piping must be extended
outside the dryer area, the piping must be sized so that
it will cause no more than 0.25 psig back pressure.
Figure 1
RECOMMENDED PIPING LAYOUT
Connections
(without Filters)
(inches)
Inlet Outlet
1¼ NPT 2 NPT
2 1¼
1¼ 2 NPT 2 NPT
1½ 2 NPT 2 NPT
2 NPT 2 NPT 2 NPT
3 3
2½ 3 3
3 NPT 3 3
3 NPT 3 3
3 NPT 3 3
4 FLG 4 FLG 4 FLG
4 FLG 4 FLG 4 FLG
4 FLG 4 FLG 4 FLG
4 FLG 4 FLG 4 FLG
HRD Series (Bulletin 348)