![background image](http://html1.mh-extra.com/html/carrier/42bj-1-6-ultra/42bj-1-6-ultra_installation-manual_2562046029.webp)
29
12.5 - Wiring diagrams
The ULTRA unit can be supplied without a control system,
that is, without valves or flexible water pipes, but with fan
cable bundle and electric heater ready to connect (depending
on the configuration).
If this option is chosen, the ULTRA is supplied without a ter-
minal strip, power relay or plastic protective cover.
This option is specially provided for installers who wish to fit
the control system to the ULTRA themselves.
12.5.1 - Wiring diagrams with cable bundles ready to
connect
Fan wiring
Electric heater wiring
HIGH
SPEED
SECTION 5 x 1 mm
2
BLUE
RED
GREY
BLACK
GREEN/YELLOW
FAN
MEDIUM
SPEED
LOW
SPEED
NEUTRAL
BROWN
BLUE
GREEN/YELLOW
SECTION 3 x 1.5 mm
2
230 V a.c./50Hz
230 V a.c.
50Hz