System Sensor D4P120 User manual

Page 1
INSTALLATION INSTRUCTIONS FOR SMOKE DETECTOR KITS
(11K76 & 11K80; 603408-09 & 603408-10) USED WITH KC/KG/KH/LC/LG092 - 152 UNITS
Litho U.S.A.
506437-01
1/2015
Supersedes 10/2012
E2015
D4P120 & D4S
SMOKE DETECTOR KITS
PACKAGED UNITS KITS
AND ACCESSORIES
Shipping and Packing List
Supply OR Return Air Applications
11K76 single-sensor kit contains the following:
1 - Smoke detector sensor
1 - Smoke detector power board
2 - Supply brackets
1 - Hinged panel
1 - Hinged panel mounting bracket
1 - Panel holder
1 - Power harness (J255/1, 4 -- used on KC, KG & KH
units only)
1 - Power harness (J255/J262 -- used on LG & LC units
only)
1 - Supply harness (P253/P252)
1 - Return harness (P250/P251)
1 - Jumper harness (P250/J261 --used on supply air SD
units only)
1 - 36” metal sampling tube (used on supply air SD units
only)
1 - 18” metal sampling tube (used on return air SD units
only)
1 - Plastic exhaust tube
1 - Magnet
1 - Sensor manufacturer's instructions
#10 - 16 X 3/4” sheet metal screws
#8 - 32 X 1” thread-forming screws
#8 - 32 X 1/2” thread-forming screws
Insertion-type wire ties
WARNING
Improper installation, adjustment, alteration, ser
vice or maintenance can cause property damage,
personal injury or loss of life. Installation and ser
vice must be performed by a licensed professional
installer, service agency or the gas supplier.
Supply AND Return Air Applications
11K80 dual-sensor kit contains the following:
2 - Smoke detector sensors
1 - Smoke detector power board
2 - Supply brackets
1 - Hinged panel
1 - Hinged panel mounting bracket
1 - Panel holder
1 - Power harness (J255/1,4 -- used on KC, KG & KH
units only)
1 - Power harness (J255/J262 -- used on LG & LC units
only)
1 - Supply harness (P253/P252 -- used on KC, KG & KH
units only)
1 - Return harness (P250/P251)
1 - 36” metal sampling tube (used on supply air SD units
only)
1 - 18” metal sampling tube (used on return air SD units
only)
2 - Plastic exhaust tubes
2 - Magnets
1 - Sensor manufacturer's instructions
#10 - 16 X 3/4” sheet metal screws
#8 - 32 X 1” thread-forming screws
#8 - 32 X 1/2” thread-forming screws
Insertion-type wire ties
CAUTION
Danger of sharp metallic edges. Can cause injury.
Take care when servicing unit to avoid accidental
contact with sharp edges.
Application
LC and LG Units -- Smoke detector will send a 24Vac
signal to the unit controller when smoke is sensed. The
unit controller default mode will de-energize unit.
KC, KG and KH Units -- Smoke detector will interrupt the
24Vac signal to the unit control circuit when smoke is
sensed. Unit will be de-energized.

Page 2
Installation
CAUTION
Before attempting to perform any service or mainte
nance, turn the electrical power to unit OFF at dis
connect switch.
Smoke detector sensor and power board installation
Use manufacturer's instructions provided with smoke
detector to install sensor(s) and power board. Refer to
figure 1 for location of power board, supply air sensor and
return air sensor. See figure 2 to assemble the supply air
bracket.
Sampling tube installation
1 - Select the appropriate sampling tube.
Supply air sensor -- 36”
Return air sensor -- 18”
2 - Slide metal sampling tube onto the back side of the
sensor. When sensor is installed in return air
applications, slide plastic exhaust tube onto back
side of sensor. See figure 3.
NOTE - Plastic exhaust tube is NOT used in supply air
applications and should be discarded.
3 - Orient sampling tube so that holes point toward the
air stream.
FIGURE 1
SMOKE DETECTOR COMPONENT LOCATIONS
ROUTE P253 SUPPLY AIR
HARNESS THROUGH PLASTIC
CONDUIT OVER FILTER FRAME
ROUTE P250 AND P252
FROM THE OTHER END OF
SUPPLY AIR HARNESS
A173 POWER
BOARD
A171 RETURN
AIR SENSOR
A172 SUPPLY
AIR SENSOR
P251
J251
J253
P253
IDENTIFY CONNECTORS
BY LABELS STAMPED
ON WIRES
SUPPLY AIR SMOKE DETECTOR SUPPORT BRACKET
FIGURE 2
A172 SUPPLY
AIR SENSOR
HEAD
SUPPLY AIR
BRACKETS

Page 3
SMOKE DETECTOR SENSOR WITH SAMPLING
TUBE AND EXHAUST TUBE
FIGURE 3
PLASTIC EXHAUST
TUBE
SENSOR
HEAD MAGNET
TEST
LOCATION
METAL SAMPLING TUBE
(Point sampling holes
toward air stream)
Wiring
FIGURE 4
KC, KG & KH CONTROLS AREA
GROUND TAB
DISCONNECT UNIT WIRES
LABELED 1 AND 4. CONNECT
TO KIT HARNESS WIRES
LABELED 1 AND 4.
J255
P250
P252
ROUTE P251 TO
RETURN AIR
SENSOR
ROUTE P253 TO
SUPPLY AIR SENSOR
BUNDLE AND SECURE
J255 HARNESS NEAR
P250 AND P252
IDENTIFY CONNECTORS
BY LABELS STAMPED
ON WIRES

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
control area. See figure 4.
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

Page 5
P250
4 Wires
4 PIN
KC, KG or KH Unit Application with Single Return Air Smoke Detector
(Note: Verify that power board DIP switch is set to 1)
53W80
A171
RETURN AIR
SENSOR
J251
J255 P255
J250
J252
A173
SMOKE
DETECTOR
POWER
BOARD
4 PIN 4 PIN 4 PIN
6 PIN
6 PIN
1
4 GND
FIGURE 6
6 PIN
P251
J261 P250
4 PIN
6 PIN
Discard These Three Harnesses - Not Used In This Application
Wires marked
J261-1, 2, 3, or 4
Wires marked
P250-1, 2, 3, or 4
P252
P253
Wires marked
P253-1, 2, 3, or 4
Wires marked
P252-1, 2, 3, or 4
P250
J261
Wires marked
J261-1, 2, 3, or 4
4 PIN 4 PIN 4 PIN 4 PIN
Wires marked
P250-1, 2, 3, or 4
4 Wires
4 Wires
4 Wires
Wires marked
P251-1, 2, 3, or 4
Wires marked
P250-1, 2, 3, or 4
Wires marked
J255-1, 2, 3, or 4
Kit harness connections
shown in bold.
P250
P252
4 Wires
A173
SMOKE
DETECTOR
POWER
BOARD
KC, KG or KH Unit Application with Single Supply Air Smoke Detector
(Note: Verify that power board DIP switch is set to 1)
53W80
A172
SUPPLY AIR
SENSOR
J253
J255 P255
J250
J252
4 PIN 4 PIN 4 PIN 4 PIN
6 PIN
6 PIN
1
4 GND
FIGURE 7
6 PIN
P253
6 PIN 6 PIN
J261
J261 P250
4 PIN
6 PIN
Discard These Two Harnesses - Not Used In This Application
Wires marked
J261-1, 2, 3, or 4
Wires marked
P250-1, 2, 3, or 4
P250
P251
Wires marked
P251-1, 2, 3, or 4
Wires marked
P250-1, 2, 3, or 4
4 PIN 4 PIN
4 Wires
4 Wires
4 Wires
Kit harness connections
shown in bold.
Wires marked
J255-1, 2, 3, or 4
Wires marked
P253-1, 2, 3, or 4
Wires marked
P252-1, 2, 3, or 4
Wires marked
J261-1, 2, 3, or 4
Wires marked
P250-1, 2, 3, or 4

Page 6
P251
P252
P253
J255
KC, KG or KH Unit Application with Return Air and Supply Air Smoke Detectors
(Note: Change power board DIP switch setting to 2)
53W81
A171
RETURN AIR
SENSOR J251
P255
J250P250
J252
A173
SMOKE
DETECTOR
POWER
BOARD
4 PIN 4 PIN 4 PIN 4 PIN
6 PIN
6 PIN
1
4GND
FIGURE 8
6 PIN
A172
SUPPLY AIR
SENSOR
J253
4 PIN 4 PIN 6 PIN
J261 P250
4 PIN
6 PIN
Discard This Harness - Not Used In This Application
Wires marked
J261-1, 2, 3, or 4
Wires marked
P250-1, 2, 3, or 4
4 Wires 4 Wires
4 Wires
4 Wires
4 Wires
Kit harness connections
shown in bold.
Wires marked
P251-1, 2, 3, or 4
Wires marked
P250-1, 2, 3, or 4
Wires marked
P253-1, 2, 3, or 4
Wires marked
P252-1, 2, 3, or 4
FIGURE 9
LC & LG CONTROLS AREA
J262C
P252
J255
P250
ROUTE P251 TO RE
TURN AIR SENSOR
ROUTE P253 TO
SUPPLY AIR SENSOR
INSERTION
WIRE TIE

Page 7
LC and LG Units
1 - Install power board and hinged panel in control box
as outlined in steps 4 through 7 in KC, KG and KH
wiring section. See figure 5.
Note - If a DDC control is factory-installed, the hinged
panel will already be in place. Discard panel provided in kit.
2 - Secure P255, J250 and J252 harness ends to the
insertion-type wire tie located in the control box. See
figure 9.
3 - Make jack/plug connections as shown in figure 10
when installing return air smoke detector only, figure
11 when installing supply air smoke detector only, and
figure 12 when installing both supply and return air
smoke detectors.
NOTE - Harness P252/P253 is factory-installed and
is located near the supply sensor and power board
hinged panel. Plugs are located in the unit near the
the sensor(s) and power board.
Test Magnet(s)
A test magnet is provided in a bag assembly with each
sensor. Remove the magnet from the bag assembly and
place it on a metal surface near the sensor. The magnet is
used during test procedures.
Maintenance and Test Procedure
Instructions
The sensor manufacturer's instructions, which are
provided with each sensor, outline information on
maintenance and test procedures. Place these
instructions in the literature pouch for future reference.
P250
LC or LG Unit Application with Single Return Air Smoke Detector
(Note: Verify that power board DIP switch is set to 1)
53W80
FIGURE 10
A171
RETURN AIR
SENSOR
J251 P251
J255 P255
J250
J252
A173
SMOKE
DETECTOR
POWER
BOARD
A55
UNIT
CONTROLLER
P262
J262C
1
4
GND
J255
Wires marked
J255-1, 2, 3, or 4
Quick-Connect
Terminals
P252
P253
Wires marked
P253-1, 2, 3, or 4
Wires marked
P252-1, 2, 3, or 4
P250
J261
Wires marked
J261-1, 2, 3, or 4
Wires marked
P250-1, 2, 3, or 4
Discard These Three Harnesses - Not Used In This Application
4 PIN
6 PIN
6 PIN
4 PIN
6 PIN
4 Wires
4 Wires
4 Wires
4 Wires
6 PIN 4 PIN 4 PIN 4 PIN 4 PIN
Wires marked
J262C-1, 2, 2, or 3
4 PIN4 PIN
Wires marked
J255-1, 2, 3, or 6
Wires marked
P251-1, 2, 3, or 4
Wires marked
P250-1, 2, 3, or 4
Kit harness connections
shown in bold.

Page 8
4 Wires
J261P252
P253
J255
4 Wires
LC or LG Unit Application with Single Supply Air Smoke Detector
(Note: Verify that power board DIP switch is set to 1)
53W80
FIGURE 11
J252
P255
P250 J250
A172
SUPPLY AIR
SENSOR
J253
Jumper Harness
A55
UNIT
CONTROLLER
P262
J262C
A173
SMOKE
DETECTOR
POWER
BOARD
4 PIN
6 PIN
6 PIN
4 PIN
6 PIN
4 Wires
4 Wires
4 PIN4 PIN 6 PIN6 PIN
1
4
GND
J255
Wires marked
J255-1, 2, 3, or 4
Discard These Two Harnesses - Not Used In This Application
6 PIN
P250
P251
Wires marked
P251-1, 2, 3, or 4
Wires marked
P250-1, 2, 3, or 4
4 PIN 4 PIN
Wires marked
J262C-1, 2, 2, or 3
Wires marked
J255-1, 2, 3, or 6
Wires marked
P253-1, 2, 3, or 4
Wires marked
P252-1, 2, 3, or 4
Wires marked
J261-1, 2, 3, or 4
Wires marked
P250-1, 2, 3, or 4
Kit harness connections
shown in bold.
P252
P253
P250
J255
4 Wires
4 Wires
LC or LG Unit Application with Return Air and Supply Air Smoke Detectors
(Note: Change power board DIP switch setting to 2)
53W81
FIGURE 12
J250
A171
RETURN AIR
SENSOR
J251 P251
P255
J252
A172
SUPPLY AIR
SENSOR
A173
SMOKE
DETECTOR
POWER
BOARD
J253
A55
UNIT
CONTROLLER
P262
J262C
6 PIN6 PIN
4 Wires
4 Wires
6 PIN6 PIN
4 PIN4 PIN
4 Wires
4 PIN4 PIN
4 PIN4 PIN
Wires marked
J262C-1, 2, 2, or 3
Wires marked
J255-1, 2, 3, or 6
Wires marked
P251-1, 2, 3, or 4
Wires marked
P250-1, 2, 3, or 4
Wires marked
P253-1, 2, 3, or 4
Wires marked
P252-1, 2, 3, or 4
J261 P250
4 PIN
6 PIN
Discard This Harness - Not Used In This Application
Wires marked
J261-1, 2, 3, or 4
Wires marked
P250-1, 2, 3, or 4
Kit harness connections
shown in bold.