Carrier ECOLOGIC 30GXN, Руководство по установке

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Table 5 — Flexible Coupling Alignment
BRINE UNITS — Special factory modifications to the units
are required to allow them to operate at fluid temperatures less
than 34 F (1.1 C). Be sure that the fluid has sufficient inhibited
glycol or other suitable corrosion-resistant antifreeze solution
to prevent cooler freeze-up.
WATER TREATMENT — Fill the fluid loop with water (or
brine) and a corrosion-resistant inhibitor suitable for the water
of the area. Consult the local water treatment specialist for
characteristics of system water and a recommended inhibitor
for the cooler fluid loop. It is recommended that once the
cooler water lines have been installed and leak checked that the
cooler heads be insulated with a suitable thickness of closed-
cell insulation. This will minimize the amount of condensation
that will form on the cooler heads.
PREPARATION FOR YEAR-ROUND OPERATION — In
areas where the piping or unit is exposed to 32 F (0
°
C) or low-
er ambient temperatures, freeze-up protection is required using
inhibited glycol or other suitable corrosion-resistant antifreeze
solution and electric heater tapes. Heater tapes on piping
should have a rating for area ambient temperatures and be cov-
ered with a suitable thickness of closed-cell insulation. Route
power for the heater tapes from a separately fused disconnect.
Mount the disconnect within sight from the unit per local or
NEC codes. Identify disconnect as heater tape power source
with warning that power must not be turned off except when
servicing unit.
A drain connection is located at the bottom of the cooler
head. See Fig. 1-25 and 34 for connection location. Install shut-
off valves to the drain line before filling the system with fluid.
WINTER SHUTDOWN PREPARATION — At the end of
each cooling season the fluid should be drained from the sys-
tem. However, due to the cooler circuiting, some fluid will re-
main in the cooler after draining. To prevent freeze-up damage
to the cooler tubes perform the following procedure.
1. If factory-installed cooler heaters have been installed,
deenergize the heaters to prevent damage and possible
safety hazards when draining, or when there is no liquid
in the system. Remove Fuse 1 to deenergize heaters.
Drain the fluid from the system.
2. Isolate the cooler from the rest of the system with
water shut-off valves.
3. Completely fill the cooler with an appropriate amount
of inhibited glycol solution (or other suitable
corrosion-inhibitive antifreeze) for 15
°
F (8.3
°
C)
below the expected low ambient conditions, 5 gallons
(19 L) minimum.
4. Leave the cooler filled with the antifreeze solution for
the winter, or drain if desired. Be sure to deenergize
heaters (if installed) as explained in Step 1 to prevent
damage. Use an approved method of disposal when
removing antifreeze solution.
MODEL
PIPE SIZE
in. (mm)
LENGTH
in. (mm)
MAX. PARALLEL
OFFSET
in. (mm)
MAX.
ELONGATION
in. (mm)
MAX.
COMPRESSION
in. (mm)
CONNECTION
STYLE
MAX. WORKING
PRESSURE
PSI
Flex-Hose SVG8 8 (219) 16 (406) 0.5 (13) 0 0 Victaulic/Varies 155
Unaflex Style 1000 8 (219) 6 (152) 1 (25) 0.75 (19) 1.75 (44) Flange 150
IMPORTANT: Adding antifreeze solution is the only cer-
tain means of protecting the unit from freeze-up if heater
fails or electrical power is interrupted or lost while tempera-
tures are below 32 F (0° C).
IMPORTANT: Before starting the unit, be sure all of the air
has been purged from the system.
COUPLING
NOZZLE CONNECTIONS
Fig. 29 — Victaulic Flange
Fig. 30 — Flow Sensor Coupling, Victaulic Flange
Fig. 31 — Victaulic Flange Connection Locations