Trane RTHA Installation, Operation And Maintenance Manual page 12

RTHA Units with Wye-Delta Starters
Figure 9. Control power wiring (new wiring bold/highlighted in red) — RTHA (MX2 starter)
To motor
oil valve
To start and
hour meters
1U2C
1TB2-9
1U3
2K300
1TB3-16
1TB3-17
12
2TB2-5
2TB2-6
2K400
1TB5-9
1TB5-10 1TB5-10
2TB2-7
1TB2-8
1TB2-7
1TB5-4
1TB4-5
1TB4-6
To shunt
trip breaker
(H)
2K400
2U1-B
2K400
(N)
To Shunt Trip
OT SWITCH
201
202
203
BP1
AUX
204
205
206
2K300
FAN
RLC-SVN005B-EN