Pre Start; Verifying Proper Air Flow; Drive Indoor Fan); Electromechanical Controls - Test - Trane Foundation EBC180 Installation, Operation And Maintenance Manual

Pre Start

Verifying Proper Air Flow (Units
with Belt Drive Indoor Fan)
Much of the systems performance and reliability is
closely associated with, and dependent upon having
the proper airflow supplied both to the space that is
being conditioned and across the evaporator coil.
The indoor fan speed is changed by opening or closing
the adjustable motor sheave.
Before starting the SERVICE TEST, set the minimum
position setpoint for the economizer to 0% using the
setpoint potentiometer located on the Economizer
Control (ECA), if applicable.
Electromechanical Controls –
Test Procedure
See unit schematic for correct wire numbers.
RT-SVX50J-EN
F F a a n n T T e e s s t t a a n n d d M M i i n n i i m m u u m m V V e e n n t t i i l l a a t t i i o o n n . . Connect red
thermostat wire (R) to black thermostat wire (G).
E E c c o o n n o o m m i i z z e e r r C C o o o o l l i i n n g g . Connect a jumper wire across
OAT on Economizer Control (ECA).
Connect red thermostat (R) wire to yellow thermostat
wire (Y1).
C C o o o o l l 1 1 . . Connect red thermostat wire (R) to yellow
thermostat wire (Y1).
C C o o o o l l 2 2 . . Connect red thermostat wire (R) to yellow
thermostat wire (Y2).
H H e e a a t t 1 1 . . Connect red thermostat wire (R) to brown
thermostat wire (W1).
H H e e a a t t 2 2 . . Connect red thermostat wire (R) to brown
thermostat wire (W2).
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