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treat any residual water remaining in the heat exchanger. Carrier
recommends one of the following steps be taken to ensure no cor-
rosion occurs:
1.
Install blank-off Victualic™
nections. Completely fill the chilled water piping with an
appropriate inhibited glycol solution to protect the chilled
water piping circuit to 15°F (8.3°C) below the lowest antici-
pated ambient temperature. This is the preferred method if the
circuit includes a pump package.
2.
Be sure to completely remove any water in the evaporator
before storing. Blow out evaporator to remove any liquid
before storing. Consider installing blank-off Victualic™
plates on the chilled water connections. Evacuate and pres-
surize the chilled water circuit with nitrogen to slightly above
atmospheric pressure, 15 psig. If pressurization is used, be
sure to note that the chilled water circuit is under pressure and
should be treated as if it is under pressure. Any service or
installation work should proceed with proper Lock Out-Tag
Out procedures.
INSPECTION DURING STORAGE
To ensure faster installation when the time comes, the following
inspection schedule is recommended:
Every 3 Months
The 30RC units are shipped with a complete operating charge of
R-32. Check each refrigerant circuit to be sure that there is posi-
tive pressure, at least 26 psig (180 kPa) in the circuit. If a circuit is
found to be without pressure, contact a qualified refrigeration me-
chanic. The system should be pressurized to find the leak. It
should be repaired, dehydrated, and recharged with refrigerant. If
a positive circuit pressure was not found, the compressor oil
should be changed or at least sampled to determine if moisture is
present. If moisture is found in the compressor oil, the oil should
be changed.
Every 6 Months
Check the unit for damage, both physical and from wildlife.
Check the unit for nests from rodents, birds, or insects. Depending
on location, these organisms can cause deterioration of compo-
nents which may result in failure. Consider an exterminator if nec-
essary. If damage is found and it will interfere with the installation,
consider repairing the damage before installation. Check the unit
control box for signs of moisture. If moisture is found, determine
the entry path and seal the leak.
Step 1 — Place and Rig the Unit
PLACING UNIT
Units are suitable for outdoor use only. For 30RC010-060 units,
see Fig. 1. When parallel chillers are aligned such that coils face
each other, a minimum of 6 ft (1829 mm) separation is recom-
mended. When the parallel arrangement has only one coil drawing
air from the space between chillers, a minimum of 3.5 ft
(1067 mm) is recommended. When parallel chillers have no coils
facing each other (a back-to-back arrangement), be sure to main-
tain the larger of the recommended service clearances associated
with each chiller (see the certified drawings). Due to NEC (Na-
tional Electric Code) regulations, a minimum clearance of 4 ft
(1219 mm) must be maintained on the side of the chiller that has
an electrical box. Chiller fan discharge must be at least as high as
adjacent solid walls. Installation in pits is not recommended.
1. Third-party trademarks and logos are the property of their respective
owners.
1
plates on the chilled water con-
*
Minimum for when coils face each other. Less clearance is required in other
configurations.
†
Clearance of 3.5 ft is required when a coil faces the wall. When there is no
coil facing the wall, see the certified drawing for the required service
clearance.
Fig. 1 — 30RC010-060 Multiple Unit Separation
These instructions cover installation of 30RC010-060 air-cooled
liquid chillers. Refer to Fig. 2 for model number to determine
factory-installed options.
RIGGING
Preferred method for rigging is with spreader bars from above the
unit. Use shackles in lifting holes. Rig at a single point with 4 ca-
bles for size 010-060 units or use spread bars. All panels must be
in place when rigging. See rigging label on unit for details con-
cerning shipping weights, distance between lifting holes, center of
gravity, and lifting ring dimensions. See Tables 1-6 and Fig. 3
and 4 for unit weights. See Tables 7-10 for physical data. See
Fig. 4 for rigging label.
If overhead rigging is not possible, place chiller on skid or pad for
rolling or dragging. When rolling, use a minimum of 3 rollers.
When dragging, pull the pad. Do not apply force to the unit. When
in final position, raise from above to lift unit off pad.
All panels must be in place when rigging. If they are not,
damage to unit could result.
3
3.5 ft (1.1 m)
MINIMUM†
6 ft
(1.8 m)
MINIMUM*
CAUTION
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