40
GB
c. Wiring the power wire and earth wire
• Disconnect the round terminal connector <TB1-CN1> inside the control box from the connector CN1A (white) and CN1B (white),
and from the secondary side of the power supply terminal block.
• Connect the power wires (round terminal L1, L2, L3, N) from the Relay Box to the L1, L2, L3, N phase of the power supply
terminal block (secondary side) inside the control box together with the existing wires. Connect the connector CN1A and CN1B
from the Relay Box instead of the connector <TB1-CN1> as located in the figure below.
• Screw down the earth wire from the Relay Box on the earth terminal inside the control box.
• Thread the supplied cable strap (
A
) through the ø7.1 hole on the plate, and clamp down the cables.
d. Make sure that the base heater is properly installed and that the power wires are properly connected.
e. Bundle the excess wires with a cable tie and keep them inside the box.
f. When done, place the cover, being careful not to pinch any wire, and then screw down the cover with the screw that was
unscrewed in the previous step.
g. Fix the outdoor unit power wires in place with the cable strap attached to the cover.
h. To use the base heater, set SW4-6 on the control board in the outdoor unit control box to ON.
Note the following when doing so.
• Be sure to turn off the outdoor unit when setting SW4-6.
If SW4-6 is set to ON from the OFF position while the outdoor unit is turned on, the cumulative operation time of the compressor
will be cleared. To stop using the base heater, make sure to turn off the outdoor unit first, set SW4-6 to OFF, remove CN51 from
the outdoor unit circuit board, and then remove the Relay Box and the heater.
• When the cumulative operation time of the compressor is cleared while the outdoor unit is turned on, make sure to set SW4-6 to
OFF from the ON position. If the power to the outdoor unit is turned back on when SW4-6 is set to ON, the base heater setting
will be ON regardless of whether the base heater is actually connected or not.
CN1 (CN1A (white) and CN1B (white))
TB1
(L1, L2, L3, N)
Ground
Thread the supplied cable strap (
A
) through the
ø7.1 hole on the plate, and clamp down the cables.
(white)
Relay Box
Control board side
(secondary side)
Field-wiring side
(primary side)
<Power supply
terminal block>
(white)
10
1
10
1
10
1
OFF
ON
10
1
LED1
1
10
SW1
SW5
SW4
SW3
SW2
SW4-6: ON (Make the switch setting when the power is turned off.)
WT06456X01.book Page 40 Friday, January 20, 2012 3:39 PM
