RT-SVX51H-EN
29
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.
FFaann TTeesstt aanndd MMiinniimmuumm VVeennttiillaattiioonn.. Connect red
thermostat wire (R) to black thermostat wire (G).
EEccoonnoommiizzeerr CCoooolliinngg. Connect a jumper wire across
OAT on Economizer Control (ECA).
Connect red thermostat (R) wire to yellow thermostat
wire (Y1).
CCooooll 11.. Connect red thermostat wire (R) to yellow
thermostat wire (Y1).
CCooooll 22.. Connect red thermostat wire (R) to yellow
thermostat wire (Y2).
HHeeaatt 11.. Connect red thermostat wire (R) to brown
thermostat wire (W1).
HHeeaatt 22.. Connect red thermostat wire (R) to brown
thermostat wire (W2).
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