Adjustment And Configuration Of The Engine Board - Trane HUV Installation, Operation And Maintenance Manual

CSTI Adapter Board Field Connections
Figure 44. CSTI adapter board field connections
3 2 1 13 12 11 10
1. VSP 10V
2. VSP 0–10V
3. VSP DC COM
1. 24 Vac Y (hot)
2. Damper Open
3. 24 Vac Y (gnd)
4. High
5. Medium
The CSTI adapter board provides all the hookups of the
standard adapter board, but in addition provides hookups
for valve control (main and auxiliary coils), electric heat
control and damper control.
Screw terminal blocks provide convenient access to fan
controls and to end device control. In addition, a courtesy
10 Vdc supply is provided for use with an external
potentiometer or rheostat. The 10 Vdc supply supports up
to 10 mA draw.
TB3 (right 13 positions) is normally used to provide:
1. 24 Vac supply to a wall fan speed switch or
2. 24 Vac supply to a field-installed unit-mounted
controller, or a wall-mounted controller or thermostat
3. Inputs (returns) for thermostatic fan control: High,
Medium, and Low
4. Inputs (returns) for cooling/heating requests
5. Inputs (returns) for electric heat requests
6. Inputs (returns) for damper operation requests
TB4 (left three positions) is normally used to control the
system with a 0–10 Vdc input from a thermostat/controller
with a variable speed output, or a fan control rheostat.
The terminal block functional assignments and polarity
are shown for reference only, and the schematics that ship
with each unit should be consulted before wiring. Wiring
assignments are configured for each unit.
UV-SVN02C-EN
9 8 7 6 5 4 3 2
6. Low
7. V1Op/Cooling
8. Not used
9. Not used
10. V1C1 (not std)
11. V2Op/EH1St/Heating
12. V2C1/EH2St (not std)
13. Dmp Cl (not std)
Adjustment and Configuration of the
Engine Board
1
Safety Alert!
You MUST follow all recommendations below. Failure
to do so could result in death or serious injury.
• All settings take effect immediately, including fan
startup and enabling of electric heat. Caution should
be taken to stay clear of hazardous voltages, moving
parts and electric heat elements while making
adjustments to the ECM engine board. If it is not
practical to stay clear of these areas during
adjustment of the ECM engine board, please contact
Trane Global Parts for configuration kit that allows
easy powering of the engine board outside of the unit
with a 9V battery.
• Configuration adjustments to the ECM engine board
should be made through the SMALLER of the two
low-voltage lids on the front of the control panel,
through the low-voltage insulation/shielding.
Burn Hazard!
On electric heat units, certain parameter values are
locked out to prevent overheating of the unit. These
functions will appear to be saved; however, they will
not be accepted if the Electric Heat Protection setting is
"On" . Do not change the Electric Heat Protection setting
to "Off" and make changes to the protected settings
unless you are programming an unconfigured service
replacement board to match the unit settings on a ECM
configuration label. Failure to follow this instruction
could result in the unit overheating and becoming hot
to the touch, which could result in minor or moderate
injury, and/or equipment damage.
Note: The engine board functions and unit specific
settings are summarized on the ECM engine
configuration label affixed to the back side of the
control panel low voltage lid on every unit.
ECM Overview and Setup
WARNING
CAUTION
47