Field Wiring - Trane Axiom GEHB Installation Operation & Maintenance

All wiring and grounding must be
in accordance with national and
local codes. Trane shoulder no
liability for installation performed by
unqualified personnel.
Warning In the process of installation,
debugging, servicing and repairing,
when power-on operation is required,
it must be performed by qualified and
special trained personnel. Or severe
body hurt and even death of operator
will result from electric shock.
Wiring safety precautions
1.Check the accordance of electric
parameters on the nameplate and unit
power specification.
2.A disconnect switch must be provided
at the job site and installed above or
adjacent to the unit.
3.Cooper wire only. Other kind of wire
will damage the unit.
Figure 14 Thermostat/sensor Location
LIVE
N 4WV
5A/250~
To Controller
12V GND Tx' Rx'
Figure 16 Main unit control board

Field wiring

4.Safety grounding is required for all
the units.
5.High voltage wire is connected firmly
and reliably to the control box thru
reserved hole on the shell.
Te m p e r a t u r e c o n t r o l l e r
installation
Te m p e r a t u r e c o n t r o l l e r m u s t b e
furnished at well-ventilated better
a v e r a g e t e m p e r a t u r e i n d i c a t e d
locations, excluding back door or
corner, cool/heat duct adjacency,
radiator neighbor like direct sunshine
places, concealed duct or chimney
a d j a c e n c y, o u t d o o r w a l l o r u n -
conditioned area, other unit neighbor
or conditioned area supply outlet. See
Figure 14 for the detail.
Wire controller
a. Wire controller can be set on the 86
CN3
OF LF MF HF
CPU
SW-4
ROOM ID OD OAT
To Controller
Figure 15 Wire controller base framework
12V GND Tx' Rx'
Figure 17
12
type of base box, which is installed
align to the wall.
b. Thread the communication shield
wire thru the reserved hole on the
base of the wire controller, which is
then fixed on the selected place.
c. Connect the communication shield
wire on the according terminals, as
shown in Figure 17.
d. Close the controller cover.
Connection to the main unit
a. Open the control box.
b. Connect power line and control
line firmly according to unit wiring
diagram.
c. C o n n e c t s h i e l d w i r e o f w i r e
controller to according terminals on
the main unit control terminal, as
shown in Figure 16.
d. Close the control box.
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