Vogt HE S Series, Installation & Start-Up Instructions

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Installation & Start-up – HES Series
13
Air-Cooled Condenser Installation Instructions
! WARNING !
These installation guidelines must be followed to obtain reliable operation
from air-cooled ice machines. If these guidelines are not followed, the
compressor warranty will not be honored.
! WARNING !
1. Use only Vogt approved condensers. Any exceptions to this policy must be obtained in
writing prior to installation and operation of the ice machine.
2. Outdoor condensers must be installed with vertical airflow. Indoor condensers used for
heat recovery may be installed with either horizontal or vertical airflow.
3. The condenser must be mounted above the ice machine, with liquid refrigerant from the
condenser outlet draining freely (1/4” per foot slope) in the direction of normal operating
flow (back to the ice machine) with no traps in the liquid line.
4. Flooding head pressure controls such as Alco Headmaster are not to be used, since they cause
excessive subcooling of the returned liquid refrigerant and interfere with reliable ice harvest.
5. The discharge and liquid lines must be insulated with 1/2” thick Armaflex insulation or equal.
6. Horizontal runs in the discharge line should slope 1/4” per foot in the normal direction
of flow (away from the ice machine).
7. Traps must be installed in discharge lines at the base of all vertical risers. There should be
no intentional traps in liquid lines. Trap volume should be kept to a minimum. Typical
details are shown in FIGURE-10. Long vertical runs should have traps every 20 feet.
8. Use only ACR grade copper pipe, Type L. Recommended line sizes are shown in TABLE-3.
9. Distance between ice machine and condenser must not exceed 150 equivalent feet. Refer
to Condenser Equivalent Line Size worksheet. (See TABLE-5)
10. Condensers must be provided with a cold weather valve kit per FIGURE-9A. These valves
allow one-half of the condenser to be disabled in cold weather. Running the ice machine
with one half the condenser in cold weather makes it easier to maintain minimum necessary
condensing pressure, particularly in windy conditions. The coil thermostat should be set to
close at 35
°
F. for multiple fan condensers or 50
°
F for single fan condensers.
11. Condensers with multiple fans must be provided with a thermostat to turn off unneeded
fans in cold weather. Turning off unneeded fans reduces on-off cycling of the fan(s) and
allows for a steadier condensing pressure. The fan thermostat should be set at 50
°
F.
12. When extreme cold conditions are expected or encountered (temperatures below 0
°
F and
wind greater than 15 MPH), it may be necessary to install a protective enclosure around
the condenser. Other apparatuses such as louvers may be used. Contact the factory for
suggestions.