Carrier MINIMUM LOAD CONTROL ACCESSORY 30RB060-390, Installation Instructions Manual, Page: 40 / 76

40
UNITS WITHOUT HYDRONIC PUMP PACKAGE — Refer
to Fig. 2-20 for cooler connection locations. It is required that a
field-supplied strainer with a minimum size of 20 mesh be
installed within 10 ft (3.05 m) of and ahead of the cooler inlet
to prevent debris from damaging internal tubes of the cooler.
The cooler has water-side victaulic-type connections (fol-
low connection directions as provided by the coupling manu-
facturer). Provide proper support for the piping. If compressor
and cooler grilles have been added, holes must be cut in the
grilles for field piping and insulation. See Fig. 31 for a typical
piping diagram of a 30RB unit without a hydronic pump
package.
A drain connection is located at the leaving water (supply)
end of cooler. See Fig. 2-20 for connection location. Insulate
the drain piping (in the same manner as the chilled water
piping) for at least 12 in. (305 mm) from the unit.
UNITS WITH OPTIONAL HEAT RECLAIM — The
30RB060-190 units can be equipped with a factory-installed
heat reclaim package consisting of a shell and tube condenser,
PT
PT
T1 T2 F S PP
PP
D
D
V
D
PT
PT
Chilled
W
a ter O u t
He a ter (Option a l)
He a ter
E
D
PT
Air S ep a r a tor with Vent *
S tr a iner/ Su ction G u ide
Rever s e Flow Check
V a lve/ S ervice V a lve
P u mp
S ervice V a lve
Com b in a tion V a lve
I s ol a tion V a lve *
Pre ssu re Red u cing
Fill V a lve *
Flexi b le Connection s*
Pre ssu re Relief *
Chilled
W
a ter In
HYDRONIC PUMP PACKAGE
IN S IDE
UNIT
OUT S IDE
UNIT
20 Me s h S t a iner **
LEGEND
*Field-supplied and installed.
†Factory-installed option.
**Required within 10 ft (3 m) of cooler in addi-
tion to suction strainer for open loop systems.
D — Drain, 3 /
4
-in. NPT
D

— Drain, 1 /
4
-in. NPT
E — Expansion Tank Connection, 3 /
4
-in. NPT
FS — Flow Switch
PP — Pipe Plug, 1 /
4
-in. NPT
PT — Pressure/Temperature Tap
T1 — Leaving Water Thermistor
T2 — Entering Water Thermistor
V — Vent, 1 /
4
-in. NPT
Fig. 30 — Typical Piping Diagram on 30RB Units with Hydronic Package — Dual Pumps
A30-5304
CAUTION
Do not circulate water through unit without strainers in
place. Failure to use the strainers represents abuse and may
impair or otherwise negatively affect the Carrier product
warranty.