Page 4
KC, KG and KH Units
1 - Supply air smoke detector installations -- Route
harness wires across the top of the unit. Secure wires
to existing bundle and route from the control area to
the blower compartment as shown in figure 1. Take
care to secure wires away from other components.
2 - Locate and disconnect wires labeled 1 and 4 in
3 - Locate
power
harness
which
has
three
quick-connect terminals on one end of harness.
Connect wires labeled 1 and 4 to terminals
disconnected in previous step. Connect wire labeled
GND from power harness to ground tab in unit.
Position J255 plug near P250 and P252 plugs. See
Figure 4.
4 - Secure power board to hinged panel using two
#8-32X1” screws. Route power board harness
behind hinged panel as shown in figure 5 using
provided insertion-type wire ties.
5 - Use two #8 - 32 X 1/2” screws to secure smoke
detector hinged panel to hinged panel mounting
bracket. See details A and B on figure 5.
6 - Use two #8 - 32 X 1/2” screws to secure panel holder
to left side of compressor wrapper.
7 - Use two #8 - 32 X 1/2” screws to secure hinged panel
assembly to control box.
8 - Secure P255, J250 and J252 harness ends to the
insertion-type wire tie located in the control box.
9 - Make jack/plug connections as shown in figure 6
when installing return air smoke detector only, figure
7 when installing supply air smoke detector only, and
figure 8 when installing both supply and return air
smoke detectors.
POWER BOARD INSTALLATION
(KC, KG, KH, LC & LG Units)
FIGURE 5
DETAIL B
HINGED PANEL
MOUNTING
BRACKET
DETAIL A
HINGED PANEL
MOUNTING
BRACKET
HINGED
PANEL
MOUNTING
BRACKET
PANEL
HOLDER
CONTROL
BOX
B1
B2
POWER
BOARD
MOUNTING
SCREWS
MOUNTING
SCREW
SEE
DETAIL A
P252
J255
P250
SEE
DETAIL B
ROUTE P253
(4 PIN PLUG) TO A172
SUPPLY AIR SENSOR
J26
2
HINGED
PANEL
ROUTE POWER
BOARD HARNESS
BEHIND HINGED PANEL
COM
PRESSOR
WRAPPER
