Trane S*HF*20-75 Troubleshooting Manual page 110

SERVICE MODE Menu (Local Human Interface only)
End Of Submenu (NEXT) For Service Mode
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Relay State =
Hydro Heat/Chilled Water Output
Table 8: Hydronic Heat/Chilled Water Relay
State/Relays
OFF
Cool On
Heat On
Override
Notes:
1. K1 turns ON when the output is commanded > 0%.
2. Override occurs with Freezestat or service test request.
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Relay State =
Mod Gas Heat/Chilled Water Output
Table 9: Modulating Gas Heat / Chilled Water Relay
State/Relays
OFF
Cool On
Heat On
Override
Note: K1 turns ON when the output is commanded > 0%.
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Chilled Water
Actuator
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Hydronic Heat
Actuator
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110
K11 K12
OFF OFF
ON ON
OFF OFF
ON OFF
K11 K12
OFF OFF
OFF OFF
ON OFF
OFF OFF
Used With: All Units w/DX Cooling
Used With: Air Handlers w/Chilled
HEAT ON
Water Cooling and Hydronic Heat
0%
Possible Values:
Relay State:
HEAT ON, COOL ON, OVERRIDE
Output: 0 to 100%
K1
OFF
Note: The relays on the HEAT module,
OFF
and associated wiring, are used to route
Note 1
the 0 to 10VDC modulating output to the
Chill Water and Hydronic Heat actuators.
Note 2
[See " Table 8: Hydronic Heat/Chilled
Water Relay
Used With: Air Handlers w/Chilled
HEAT ON
Water Cooling and Modulating Gas Heat
0%
Possible Values:
Relay State: HEAT ON, COOL ON
Output: 0 to 100%
K1
Note: The relays on the HEAT module,
OFF
and associated wiring, are used to route
OFF
the 0 to 10VDC modulating output to the
Note 1
Chill Water and Mod Gas Heat actuators.
OFF
[see " Table 9: Modulating Gas Heat /
Chilled Water Relay
Used With: Air Handlers w/Chilled
Water Cooling (If Heating Unit, Hydronic
0%
or Modulating Gas Is Not Installed)
Possible Values: 0 to 100%
Used With: Hydronic Heat Units, (If Air
Handler Unit, Chill Water Is Not Installed)
0%
Possible Values: 0 to 100%
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RT-SVP07B-EN