Trane RAUC-IOM-15, Инструкция по установке и обслуживанию

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Installation (Continued)
EVP Chiller Control
Each unit ordered for EVP Chiller applications (digit 9 in the
model number), is shipped with the following controls:
EVP Remote Panel w/ W7100G Controller
Freezestat (8S12)
Chiller Water Temperature Sensor (8RT2)
Freezestat Bulb well
Chilled Water Temperature Sensor Well
The installation of the freezestat bulb well, freezestat bulb,
and the chilled water temperature sensor was discussed in
the “Chilled Water Piping” section. Refer to that section for
their installation locations and dimensional data.
The chiller control (located in the remote panel) controls the
system operation by responding to the leaving water tem-
perature. The remote panel must be mounted indoors and
within 20 feet of the chiller barrel.
Figure 3-14 illustrates the remote panel dimensional data,
the component locations, the locations for the shipwith
items, grounding lugs, and the field connection terminal
board 8TB9. Refer to the field connection diagram illus-
trated in Figure 3-15 for the interconnecting points between
the remote panel and the unit’s control panel.
A ground wire must be installed between the EVP remote
panel and the unit control panel.
W7100G Discharge Chilled Water Controller
The discharge chilled water controller (8U11) is shipped
from the factory with a combination wire/resistor type
jumper installed across Terminals 6, 7, & 8. The resistive
portion of the jumper is across Terminals 7 & 8, which set
the number of operating stages, of the control.
As shipped, a 604 ohm resistive jumper is installed across
Terminals 7 & 8 on the controller. The 604 ohm resistive
jumper is required for six (6) stage operation on 80 through
120 Ton units.
Note: The resistor portion of the combination
jumper must be installed across Terminals 7 & 8 on
the controller.
The descriptions of the following input devices are to ac-
quaint the operator with their function as they interface with
the Honeywell W7100G controller.
Note: All wiring must comply with local and
national electrical codes (NEC).
Figure 3-14
EVP Chiller Remote Panel
Chilled Water Temperature Sensor
(Honeywell 8RT2)
With the sensor installed in its proper location within the
chilled water piping (Figure 3-7), connect shielded cable
(Belden 8760 or equivalent) from the sensor leads to the
leads inside the remote panel. Refer to Figure 3-14 for the
electrical access into the remote panel and the field con-
nection diagram illustrated in Figure 3-15 for the final cable
termination points.
Note: Connect the shield ground to the ground
screw inside the remote panel. Do not connect both
ends of the shield to ground.
Outside Air Thermostat
(5S57 Field Provided)
The setpoint for the outside air thermostat is based upon
the working ambient selected when the unit was ordered. A
Zero (“0”) in the 11th digit of the model number indicates
the system is designed for standard ambient operation of
40
o
F and above. A One (“1”) in the 11th digit of the model
number indicates the system is designed for low ambient
operation of 0
o F and above. Therefore, select a thermostat
with the appropriate operating range based on the unit
specifications.
Refer to the field connection diagram for the specific con-
nection points inside the remote panel.