Trane CSAA Installation, Operation And Maintenance Manual page 124

Installation - Electrical
Figure 160. Typical schematic for customer-supplied power for GFCI and lights/switch
L5
Dedicated
GFCI
customer
L6
suppoled
power
27
(115V)
Attach
earth
ground
L1
Custom
L2
supplied
power
(115V) 27
Attach
earth
ground
Lighting Transformer Fuses
Fuse
Voltage
2F73
24
to
2F76
Device
Designation
2TP4 Terminal block GFCI/lighting circuits
2T3 Primary lighting transformer
2T4 Secondary lighting transformer
3GFR1 Ground fault receptacle
Device Prefix Location Code
Area
1 High voltage panel
2 Low voltage panel (unit schematic)
3 Air handler section
124
2TB4
1 BLK
2
WHT
G GRN
BLK
H
BLK
WHT
N
WHT
G
P/N
MDL-3-2/10-R (Bussmann)
Legend
Description
Location
2T3
115V
WHT BLK
H1 H2 H3 H4
2F73 2F74
24V 24V
X1 X2 X3 X4
To primary
lighting circuit
Notes:
1 Dashed lines indicate recommended field wiring by others.
Phantom lines indicate control options.
Ref. Control panel schematic for specific detail.
All field wiring must be in accordance with the National
2
Electrical Code (NEC), state and local requirements. Other
countries applicable national and/or local requirements
shall apply. Field conductors shall have insulation rating
not less than 600V copper conductors only.
3 The minimum circuit ampacity, the maximum fuse size, and
disconnect size are calculated based on the inverter input line
currents per Article 430-2 of the National Electrical Code.
Attach ground or equipment ground.
27
3GFR1
WHT
BLK
GRN
2T4
115V
WHT BLK
H1 H2 H3 H4
2F75 2F76
24V 24V
X1 X2 X3 X4
To secondary
lighting circuit
CLCH-SVX07K-EN