Installation
SO-SVN038A-EN 15
Remove the Existing Display and Install
New Display (When Required)
Remove Existing Display in Unit
1. Unplug the terminal of IPC communication harness.
2. Unplug the terminal of ethernet cable.
3. Loose screw of display to arm, remove existing display.
Install New Display Unit
1. Replace new display, tighten the screw of display to arm.
2. Plug the terminal of IPC communication harness.
3. Plug the terminal of ethernet cable.
Solid State Oil Heater Relay
Installation
Note: This procedure does not apply to new chillers
operating with R514A refrigerant. Chillers with R514A
refrigerant have solid-state relay for heater control
installed and configured by the factory.
Relay RLY02909 is provided for upgrading chillers with
R-123 refrigerant. This relay will operate with a 120V 15mA
signal. It will safely and quickly switch 120V loads up to 25
amps. The oil heater amp draw is 6.25 amps at 120V, which is
well within the capacity of RLY02909.
Mounting Location
The RLY02909 must be mounted directly onto a flat steel face
of the control panel, either on a side wall of the enclosure, or
on the back-plane panel. The mounting surface acts as a heat
sink for the relay, so the relay should be securely bolted to the
mounting surface.
Note: Instructions included with the relay may require
removal of paint from the mounting surface, and the
use of a heat conductive paste between the relay and
the mounting surface. Trane lab testing indicates that
these additional steps are not needed for the low 6 or
7 amp draw that our heater will apply to the relay.
Securely mounting the relay to any steel surface in the
control panel is adequate for the application.
Figure 11. Install new Symbio 800 controller in panel
Figure 12. Remove existing display and install new display
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