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Service and Maintenance
WARNING
Hazardous Voltage and Exposure to
Ultraviolet Radiation!
This product contains components that emit high-
intensity ultraviolet (UV-C) radiation which can be
harmful to unprotected eyes and skin, and cause
serious damage to the equipment.
Failure to disconnect power before servicing could
result in burns or electrocution which could result in
death or serious injury.
Disconnect all electrical power, including remote
disconnects, and make sure the UV lights are off
before servicing. Follow proper lockout/tagout
procedures to ensure the power cannot be
inadvertently energized.
Trane does not recommend field installation of
ultraviolet lights in its equipment for the intended
purpose of improving indoor air quality. Trane accepts
no responsibility for the performance or operation of
our equipment in which ultraviolet devices were
installed outside of the Trane factory or its approved
suppliers.
Table 65. Gas heat high limit cutout
Unit Size
MBh
DF
235
20/25
250
500
350
30
250
500
350
40
250
850
(c)
500
50/55
250
850
(c)
500
60-75
250
850
(c)
90-130
1000
210
(a)
FC and A/F units have automatic reset high limit cutouts.
(b)
DDP units have manual reset high limit cutouts.
(c)
MBH listed are for downflow. For Horizontal MBH, refer to gas heat rating plate.
Compressor Circuit Breakers
Every fixed speed compressor is protected by a circuit
breaker. If replacement is necessary, please refer to the
circuit breaker nameplate to identify the part number and
manufacturer. Contact the circuit breaker manufacturer to
locate the datasheet for the circuit breaker to find the "must
hold / must trip" values.
132
FC or A/F — Open Value
2 Stage & Mod
HZ
DF
n/a
250
160
n/a
250
160
n/a
250
250
195
250
250
340
220
250
195
n/a
210
(a)
2 Stage & Mod
Ultra Mod
HZ
DF
n/a
195
160
180
n/a
220
160
180
n/a
280
250
220
195
195
250
220
340
195
250
220
n/a
n/a
Supply and Relief/Return Fan Overloads
When the VFD bypass option is selected, each supply and
relief/return fan is protected by a motor overload when in
VFD bypass mode. On 60-75T units with dual DDP supply
fan motors (with or without VFD bypass option), each
supply fan motor is protected by a motor overload in both
standard operation and VFD bypass mode. The motor
DDP — Open Value
(b)
Ultra Mod
HZ
DF
n/a
n/a
n/a
180
n/a
n/a
n/a
160
n/a
n/a
n/a
195
n/a
195
n/a
260
260
220
195
220
n/a
n/a
RT-SVX072D-EN
HZ
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
220
220
n/a
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