Harris Atlas DVL400, Technical Manual

Page: 36 / 180

2-6 888-2473-001 2/25/03
WARNING: Disconnect primary power prior to servicing.
Section 2 Installation / Initial Turn-On ATLAS Series™
signals connect from terminals X1-8 thru X1-15 in the heat exchanger to X2-13 thru
X2-20 in the cooling control panel. Table 2-2 is a connection reference chart.
NOTE:
Condensation can occur in the conduit leading to the outside heat exchanger
from the control panel. This conduit should be caulked or sealed after the sys-
tem is tested and operational.
Connect the control and status wires between the cooling control panel and the
transmitter with the supplied 16-2-12C (screened) multi-conductor cable.
These low level signals connect from terminals X2-1 thru X2-12 in the cooling
control panel to J12-1 thru J12-12 on the External I/O board in the transmitter (pin
for pin connection).
Connect the test load flow switch to J18-9 and J18-10 on the External I/O
board in the transmitter.
This will mute the transmitter rf output if there is no
coolant flow through the test load (provided the U-Link is in position 2, transmitter
to test load). Specified wire is 7-2-4C, 4 conductor cable. A closed contact is
required to operate the transmitter. Some switches may also use +15V and ground.
The connections are as follows:
•
J18-9 to flow switch terminal 1 (common)
•
J18-10 to flow switch terminal 3 (N.O.)
Depending on the switch the following may also be required:
•
J11-1 (+15Vdc) to flow switch terminal 2 (+DC)
•
J11-6 (ground) to flow switch terminal 4 (-DC)
Table 2-2 Heat Exchanger Control and Status Connections
Cooling Control Panel Heat Exchanger
X2-13 X1-8
X2-14 X1-9
X2-15 X1-10
X2-16 X1-11
X2-17 (2 conductors) X1-13 (2 conductors)
X2-18 (2 conductors) X1-14 (2 conductors)
X2-19 (2 conductors) X1-15 (2 conductors)
X2-20 X1-12(GND)
These connections should be verified using Schematic
#843-5550-189 or 843-5550-218
The Gray rows require
2 conductors be used
on each terminal for
current capacity.
NOTE: