Installation
8
ACC-SVN136E-EN
This wire connection is needed to disable the ReliaTel™
on-board low ambient function. The unit will not work
properly unless this function is disabled.
Control Box Wiring
1.
Locate fan terminal block (FTB1) and (FTB2 if
applicable), remove and discard the black jumper wire.
See unit connection and wiring diagrams on back side
of control box access panel.
2. Following the hook-up diagram that corresponds to
the unit, make all indicated connections in unit control
box. See
-
for
corresponding hook-up diagram.
Notes:
•
Ensure the connections from the switch over valve to
the heat pump terminals are on the controller as
shown in theTWA hook-up diagram provided in the kit
(
).
•
For TTA120/150E/H units, two transducers should be
used with one controller — in which case the controller
will respond to the transducer that senses the highest
pressure (see
below for wiring).
•
Cut wire ties, if necessary, to properly route wires.
3. Finish wiring installation
a. Using wire ties, bundle and dress any excess wires.
b. Apply the correct hook-up diagram (supplied in kit)
which corresponds to the unit to an open area on
the back side of the control box access panel for
future reference. See
-
for corresponding diagrams.
c. After the settings have been properly adjusted (see
), reinstall the compressor
and control box access panels and secure with
screws that were removed.
d. Re-connect all power to the unit. Refer to
troubleshooting guide,
, if needed.
Figure 7.
ReliaTel — J1-7 board connection
J1-7
RTRM
Wire 68Z
Figure 8.
Wiring connections for two transducers to
one controller
BLUE
WHITE
GREEN
RED
BLACK
PRESSURE TRANSDUCER
2
BLUE
WHITE
GREEN
RED
BLACK
PRESSURE TRANSDUCER
1
