Carrier Smoke Alarm 48 50HG014 028 User Manual

48/50HG014---028, 48/50PG20---28  
Single---Package Rooftop Units  
with COMFORTLinkt and Electro---Mechanical Controls  
Return and Supply Smoke Detectors Accessory  
Installation Instructions  
PART NO. CRSMKDET001D00, CRSMKSUP001B00, CRSMKSEN001A00  
TABLE OF CONTENTS  
GENERAL  
An HVAC (heating, ventilation and air-conditioning) system  
supplies conditioned air to virtually every area of a building.  
Smoke introduced into this air duct system will be distributed  
throughout the entire building. Smoke detectors designed for use  
inside the unit are used to sense the presence of smoke passing  
through the unit.  
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . 1  
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Check Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Return Air Smoke Detector Installation . . . . . . . . . . . . . . . 2  
Supply Air Smoke Detector Installation . . . . . . . . . . . . . . . 5  
Sensor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
Configuring the ComfortLinkt Controller . . . . . . . . . . . . 8  
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Recommended Service Schedule . . . . . . . . . . . . . . . . . . . . 9  
Sensor Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Controller Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Dirty LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Power LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Trouble LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
The smoke detector utilizes photoelectric technology for the  
detection of smoke. This detection method, when combined with  
an efficient ducting design, samples air passing through the unit.  
If sufficient smoke is sensed, an alarm signal is initiated and the  
ComfortLink controls will shut down the unit. With the unit shut  
down, the unit will not blow toxic smoke and fire gases  
throughout the areas served by the duct system.  
The return air smoke detector is part number  
CRSMKDET001D00, which includes a Smoke Sensor and a  
Smoke Control Module combined with sampling tube, harnesses  
and hardware. The supply air smoke detector is part number  
CRSMKSUP001B00, which includes a Smoke Sensor and a  
Smoke Control Module combined with sampling tube, harnesses  
and hardware. Part number CRSMKSEN001A00 is a Smoke  
Sensor only for use as a second (Supply with existing Return, or  
Return with existing Supply) Air Smoke Detector with sampling  
tube, harnesses and hardware.  
The Control Module can be attached to a Smoke Sensor and  
installed as an assembled unit, or it can be installed separate from  
a sensor. One Controller can be used to control up to two  
detectors (Smoke Sensors).  
IMPORTANT: There are two different design revision 48/50HG  
units that have been produced. Because of these differences, there  
are two different versions of this accessory. This accessory  
literature covers accessories manufactured for units with design  
revision 1. This revision designator is found in the 13th digit of  
the unit model number located on the units’ rating plate. Design  
revision 0 units are not covered in this accessory book.  
To determine the design revision, refer to the full unit model  
number. See Fig. 1 for an example of an HG model number. The  
design revision number in the model number nomenclature is  
located in position 13.  
SAFETY CONSIDERATIONS  
Installation and servicing of air-conditioning equipment can be  
hazardous due to system pressure and electrical components.  
Only trained and qualified service personnel should install, repair,  
or service air-conditioning equipment.  
Untrained personnel can perform the basic maintenance functions  
of cleaning coils and filters and replacing filters. All other  
operations should be performed by trained service personnel.  
When working on air-conditioning equipment, observe  
precautions in the literature, tags and labels attached to the unit,  
and other safety precautions that may apply.  
DESIGN REVISION NUMBER  
Position No.  
Example:  
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16  
4
8
H
G
D
0
1
6
A
A
C
6
1
1
A
A
Follow all safety codes. Wear safety glasses and work gloves. Use  
care when handling and installing the accessory.  
Recognize safety information. This is the safety--alert symbol  
. When you see this symbol on the unit and in instructions or  
manuals, be alert to the potential for personal injury.  
C07172  
Fig. 1 --- Model Number Chart  
1
 
Exhaust tube  
Plug  
Conduit nuts  
( field supplied )  
Rubber gasket  
Sensor housing  
and electronics  
Sampling tube  
Collar  
Conduit support plate  
Rubber  
gasket  
Terminal block cover  
Cover gasket  
(ordering option)  
Cover gasket  
(ordering option)  
Controller housing  
and electronics  
Controller cover  
Conduit couplings  
( field supplied )  
LEDs  
Alarm  
Trouble  
Power  
Sensor cover  
Fastener  
(2X)  
Smoke Sensor  
LEDs  
Power  
Dirty  
Trouble  
Alarm  
Smoke Control Module  
C07173  
Fig. 2 --- Smoke Detector  
SMOKE CONTROL MODULE  
PLUG LOCATION  
RETURN SMOKE SENSOR  
C1/B1  
B1/A2  
A1  
C07174  
Fig. 3 --- Return Air Smoke Detector Location  
3. Remove cover from smoke detector. The screws will  
remain captured in the cover.  
4. Slide exhaust tube into the sensor. The exhaust tube  
should be inserted from the back of the sensor, into the  
hole with four slots, and locked into place. (See Fig. 2.)  
5. Slide smoke detector into holes in partition with the ter-  
minal block to the right. Do not secure at this time.  
6. Slide the sampling tube collar over the sampling tube un-  
til the tabs lock into the tube. (See Fig. 2.)  
!
WARNING  
ELECTRICAL SHOCK HAZARD  
Failure to follow this warning could result in personal  
injury and/or death.  
Prior to installation of this accessory, make sure all  
power is disconnected to the unit and locked out and  
tagged.  
7. Slide long sampling tube (P/N RN20ZT060) into left--  
hand hole of smoke detector. It might be necessary to tilt  
the smoke detector upwards in order to properly align the  
sampling tube, making sure that the sampling holes  
point DOWN. (See Fig. 4.)  
8. Install plug into far end of sampling tube.  
9. Remove the unit side panel at the return end of the unit.  
Save screws for use later.  
NOTE: For horizontal applications it is easiest to install the  
smoke detector prior to making duct connections.  
1. Open the hinged electrical/compressor access door and  
secure.  
2. Find the 2 plugs located above compressor B1/A2,  
remove and discard. Cut holes in the insulation located be-  
hind the partition.  
3
 
10. Mount the sampling tube support bracket to the  
cross member with two 1/4AB-14 5/8-in. screws  
(P/N AL48AM307) as shown in Fig. 5. Insert large snap  
bushing (P/N HY93NH085) into hole in bracket.  
NOTE: This step is not needed with 48/50PG Humidi--MiZert  
units because they have plug 19 harness already installed in the  
control box. The harness assembly part number 50TG403507  
that came with the accessory is not used. Factory installed PL--19  
can be located outside the contol box by its appropriate label. For  
Humidi--MiZer smoke detector wiring refer to Fig. 8.  
11. Slide sampling tube into bracket. (See Fig. 4.) Pull the  
sampling tube so that the locking collar snaps into the  
smoke detector.  
12. Attach smoke detector to partition using two, 8-18 3/4-in.  
pan head screws (P/N AL56AU168).  
16. Connect PL-19 from the smoke detector control module to  
the PL-19 on the control box harness installed in Step 15.  
NOTE: On 48PG Humidi--MiZer units the control box harness  
has a jumper plug attached. This needs to be disconnected so  
PL--19 from the smoke detector can be snaped in.  
!
CAUTION  
17. Restore power to the unit.  
EQUIPMENT DAMAGE HAZARD  
18. Configure ComfortLink controller as specified in  
figuring the ComfortLink Controller.  
Con-  
Failure to follow this caution may result in equipment  
damage.  
19. Perform Sensor and Controller tests. At a minimum, the  
Magnet test should be performed to verify smoke detector  
wiring.  
Do not overtighten the screws.  
13. Replace the unit side panel.  
20. Replace smoke detector cover.  
14. Install the snap bushing (P/N HY93NH069) in the center  
knockout underneath the control terminal strips located in  
the bottom right-hand corner of the control box.  
21. Check for alarms. Correct any problems.  
15. Feed wires through snap bushing and connect to appropri-  
ate terminals as shown in Fig. 6 for ComfortLinkt units  
or Fig. 7 for Electro--Mechanical units.  
INSTALL SUPPLY SENSOR TUBE  
WITH HOLES POINTING  
UP  
INSTALL RETURN SENSOR TUBE  
WITH HOLES POINTING  
DOWN  
INSTALL RETURN EXHAUST  
TUBE HERE  
BUSHING  
BRACKET  
C07175  
Fig. 4 --- Supply and Return Sensor Tube  
4
 
SAMPLING TUBE  
SUPPORT BRACKET  
C07176  
Fig. 5 --- Sampling Tube Support Bracket  
PL19  
CUT OFF CONNECTOR, LABELED TB3-5, ON ORN WIRE  
C07177  
Fig. 6 --- Return and Supply Air Smoke Detector Wiring on ComfortLink Units  
1. Open the indoor fan access door and secure.  
Supply Air Smoke Detector Installation  
(CRSMKSUP001D00)  
2. Open and secure hinged electrical/compressor access door.  
3. Disconnect wires located on the right-hand side of the fan  
deck. On gas heat units, the indoor fan plug and the limit  
switch quick connects must be disconnected. On units  
without gas heat, only the indoor fan plug must be  
disconnected.  
4. Find the 2 plugs located in the blower side plate. Remove  
the plugs and discard. It will be necessary to remove some  
of the tape holding the plugs in place.  
The supply air smoke detector is to be installed in the predrilled  
holes located on the front of the first indoor blower. (See Fig. 9.)  
!
WARNING  
ELECTRICAL SHOCK HAZARD  
Failure to follow this warning could result in personal  
injury and/or death.  
5. Remove cover from smoke detector. The screws will  
remain captured in the cover.  
Prior to installation of this accessory, make sure all  
power is disconnected to the unit and locked out and  
tagged.  
5
 
C07178  
Fig. 7 --- Smoke Detector Wiring on Electro--Mechanical Control Units  
C07179  
Fig. 8 --- 48/50PG Humidi--MiZert Smoke Detector Wiring  
6
 
6. Slide the sampling tube collar over the sampling tube  
until the tabs lock into the tube.  
7. Slide sampling tube into smoke detector with eight slots.  
20. Route cable from supply smoke sensor, along the outside  
of the control box, through the control module knockout  
and connect to the J1 RJ-45 connector.  
Make sure sampling tube holes are aligned facing UP.  
8. Insert plug into far end of the sampling tube.  
21. Using wire ties, secure the wiring so it does not interfere  
with unit operation.  
22. Replace control module cover.  
23. Restore power to the unit.  
9. Place rubber gaskets over each sampling tube on smoke  
detector. (See Fig. 2.)  
10. Remove one knockout from top of smoke detector.  
24. Configure ComfortLink controller as specified in Config-  
uring the ComfortLink Controller below.  
11. Insert one end of RJ-45 wire harness through knockout  
and wire to smoke detector as shown in Fig. 10.  
12. Slide smoke detector into holes in fan side plate with  
25. Perform Sensor and Controller tests. At a minimum, the  
Magnet test should be performed to verify smoke detector  
wiring.  
the terminal block at the top and secure using two,  
3
8-18 / -in. pan head screws (P/N AL56AU168). Replace  
26. Turn off power to the unit.  
4
cover.  
27. Reconnect the indoor fan plug and the limit switch wires if  
applicable.  
!
28. Close the indoor fan section door.  
CAUTION  
29. Restore power to the unit and check for alarms. Correct  
any problems encountered.  
EQUIPMENT DAMAGE HAZARD  
Failure to follow this caution may result in equipment  
damage.  
30. Close Electrical/Compressor section door.  
Sensor Installation (CRSMKSEN001A00)  
When adding return smoke sensor to previously installed supply  
smoke detector:  
Do not overtighten the screws.  
13. Attach cable to fan side plate using snap-in wire ties.  
See Fig. 9 for clarification. Secure to center post.  
1. Open electrical/compressor section access door/panel.  
14. Secure cable to back side of cable tray using three snap-in  
wire ties.  
2. Disconnect PL-19 from control module to terminal strip  
by separating plug connectors.  
15. In the Electrical/Compressor section, install snap bushing  
in the center knockout underneath the terminal strips lo-  
cated in the bottom right-hand corner of control box.  
3. Remove control module cover. Disconnect supply sensor  
RJ-45 wire from control module.  
4. Remove three screws attaching control module to com-  
pressor partition and save screws for later use.  
16. Connect wires to terminal strips as shown in Fig. 6 for  
ComfortLinkt units or Fig. 7 for Electro--Mechanical  
Units.  
5. Remove control module from unit.  
6. Slide feet of control module into receptacle on the return  
sensor housing and secure from the backside using one  
screw removed in Step 4. The J1 RJ-45 connector on sen-  
sor should be nearest the control module. Knockout holes  
should align. (See Fig. 11.)  
NOTE: This step is not needed with 48/50PG Humidi--MiZert  
units because they have plug 19 harness already installed in the  
control box. The harness assembly part number 50TG403507  
that came with the accessory is not used. Factory installed PL--19  
can be located outside the contol box by its appropriate label. For  
Humidi--MiZer smoke detector wiring refer to Fig. 8.  
7. Route short RJ-45 wire from J1 connector of sensor,  
through knockout holes, and connect to J1 connector of  
control module.  
17. Remove cover from control module and remove knockout  
from side of module nearest the RJ-45 connector.  
8. Follow steps 2-20 of instructions for installing return  
smoke detector.  
3
18. Using  
three  
8-18 / -in.  
pan  
head  
screws  
4
(P/N AL56AU168) screws, secure control module to com-  
pressor partition above compressor B1/A2 location.  
IMPORTANT: Step 15 requires connecting the supply smoke  
sensor RJ--45 wire to connector J2 in the control module.  
19. Connect PL-19 from control module to PL-19 from wir-  
ing harness installed in Step 16.  
When adding supply smoke sensor to previously installed return  
smoke detector:  
Follow steps 1-14 and 19-29 from supply smoke detector  
installation instructions.  
NOTE: On 48PG Humidi--MiZer units, the control box harness  
has a jumper plug attached. This needs to be disconnected so  
PL--19 from the smoke detector can be snapped in.  
7
 
SMOKE DETECTOR  
WIRE TIES  
C07180  
Fig. 9 --- Supply Smoke Detector Location and Wire Routing (Top View)  
RJ-45 HARNESS  
INSTALL CONTROL  
MODULE HERE  
USING THREE SCREWS  
CUT TAPE BEFORE  
INSERTING SMOKE DETECTOR.  
ROUTE RJ-45 HARNESS ALONG  
SMOKE POWER HARNESS  
THRU BOX, AND OUT  
AS SHOWN TO  
SUPPLY SMOKE DETECTOR  
PUNCH OUT KNOCK OUT  
PLUG  
C07181  
Fig. 10 --- Supply Control Module Installation (Side View)  
Configuring the ComfortLinkt Controller  
OPERATION  
Configuration settings for the ComfortLink controller are  
changed by using the Scrolling Marquee display. A password  
may be required to edit the configurations, depending on the  
previous settings configured in the unit. Default password is  
“1111.” Use the arrow keys to scroll the red LED on the display  
!
CAUTION  
EQUIPMENT DAMAGE HAZARD  
Failure to follow this caution may result in damage to the  
unit.  
to the “Configuration” position and press  
through the menu until UNIT is found and press  
. Scroll  
ENTER  
. After  
ENTER  
reaching the UNIT sub-menu, scroll to FS.SW (Fire Shutdown  
Input) and press twice, change the value to 1 (Normal  
The smoke detector must be tested and maintained regularly  
following NFPA 72 requirements. The smoke detector  
should be cleaned at least once a year.  
ENTER  
Open) with the arrow keys, press  
ESCAPE  
again. Press  
ENTER  
three times to return to the top level of the menu.  
Additional information about changing configurations can be  
found in the Control and Troubleshooting Guide for 48/50HG  
and 48/50PG units.  
8
 
The smoke detector contains a photoelectric detector approved  
for an extended air speed range of 100 to 4000 feet per minute  
and an operational temperature range of -4_ to 158_F. Do not  
operate the smoke detector out of these ranges.  
The smoke detector operates on 24 vac, 120 vac, or  
220/240 vac. The thermostat power terminals on the unit are used  
to power the smoke detector.  
The cover of the controller contains the Alarm, Trouble, Dirty  
and Power LEDs. The cover of the sensor contains the Alarm,  
Trouble and Power LEDs. (See Fig 2.)  
3. Squeeze the retainer clips on both sides of the optic hous-  
ing then lift the housing away from the printed circuit  
board.  
4. Gently remove dirt and debris from around the optic plate  
and inside the optic housing.  
5. Replace the optic housing and sensor cover.  
6. Connect power to the duct detector then perform a sensor  
alarm test.  
Recommended Service Schedule  
S
Visually inspect each sensor connected to the controller  
upon installation and once every 6 months thereafter.  
The smoke detector can be reset by a momentary power  
interruption, by the reset button on the front cover, by the control  
panel, or by the remote reset accessory.  
S
Perform a sensor alarm test on each sensor connected  
to the controller upon installation and once every  
12 months thereafter.  
CONTROL MODULE  
RETURN SENSOR  
J1  
J1  
S
Perform a sensor dirty test upon installation and once  
every 6 months thereafter or more frequently, as  
conditions warrant.  
J2  
E
S
Sensor Tests  
Sensor Alarm Test  
The sensor alarm test checks a sensor’s ability to signal an alarm  
state. This test requires the use of a SD-MAG test magnet.  
CONTROL MODULE  
RETURN SENSOR  
J1  
J1  
IMPORTANT: This test places the duct detector into the alarm  
state. Unless part of the test, disconnect all auxiliary equipment  
from the controller before performing the test. If duct detector is  
connected to a fire alarm system, notify the proper authorities  
before performing the test.  
J2  
E
S
SECURE FROM BEHIND  
WITH SCREW  
To perform a sensor alarm test:  
TERMINAL STRIP  
1. Hold the test magnet where indicated on the side of the  
sensor housing for seven seconds. Verify that the sensor’s  
Alarm LED turns on.  
C07182  
Fig. 11 --- Sensor Installation  
2. Reset the sensor by holding the test magnet against the  
sensor housing for two seconds. Verify that the sensor’s  
Alarm LED turns off.  
HVAC duct  
Sampling  
tube  
Sensor Dirty Test  
Sensor  
housing  
The sensor dirty test provides an indication of the sensor’s ability  
to compensate for gradual environmental changes. A sensor that  
can no longer compensate for environmental changes is  
considered 100% dirty and requires cleaning or replacing. This  
test requires the use of a SD-MAG test magnet.  
Optic  
plate  
Airflow  
To perform a sensor dirty test, hold the test magnet where  
indicated on the side of the sensor housing for seven seconds.  
Verify that the sensor’s Dirty LED flashes.  
Retainer  
clip  
IMPORTANT: Holding the test magnet against the sensor  
housing for longer than 7 seconds will put the duct detector into  
the alarm state and activate all automatic alarm responses.  
Optic  
housing  
C07183  
The sensor’s Dirty LED indicates the results of the dirty test as  
shown below.  
Fig. 12 --- Sensor Cleaning Diagram  
FLASHES  
DESCRIPTION  
0 to 25% dirty. This is typical on a newly installed duct  
MAINTENANCE  
1
detector.  
IMPORTANT: Notify the proper authorities that the smoke  
detector system is undergoing maintenance, and that the system  
will temporarily be out of service. Disable the zone or system  
undergoing maintenance to prevent unwanted alarms and  
possible dispatch of the fire department.  
2
3
4
26 to 50% dirty  
51 to 75% dirty  
76 to 99% dirty  
Controller Tests  
Controller Alarm Test  
Cleaning Procedure  
The controller alarm test checks the controller’s ability to initiate  
and indicate an alarm state.  
IMPORTANT: This test places the duct detector into the alarm  
state. Unless part of the test, disconnect all auxiliary equipment  
from the controller before performing the test. If duct detector is  
connected to a fire alarm system, notify the proper authorities  
before performing the test.  
1. Disconnect power from the duct detector then remove the  
sensor’s cover.  
2. Using a vacuum cleaner, clean compressed air, or a soft  
bristle brush, remove loose dirt and debris from inside the  
sensor housing and cover. (See Fig 12.)  
Use isopropyl alcohol and a lint-free cloth to remove dirt  
and other contaminants from the gasket on the sensor’s  
cover.  
9
 
To perform a controller alarm test:  
2. Verify that power is applied to the controller’s supply in-  
put terminals. If power is not present, replace or repair wir-  
ing as required.  
1. Press the controller’s test/reset switch for seven seconds.  
Verify that the controller’s Alarm LED turns on.  
Trouble LED  
Controller’s Trouble LED is On  
2. After performing a controller alarm test, reset the sensor  
by pressing the test/reset switch for two seconds. Verify  
that the controller’s Alarm LED turns off.  
1. Check the Trouble LED on each sensor connected to the  
controller. If a sensor’s Trouble LED is on, determine the  
cause and make the necessary repairs.  
2. Check the wiring between the sensor and the controller. If  
wiring is loose or missing, repair or replace as required.  
Controller Dirty Test  
The controller dirty test checks the controller’s ability to initiate a  
sensor dirty test and indicate its results.  
To perform a sensor dirty test, press the controller’s test/reset  
switch for two seconds. Verify that the controller’s Trouble LED  
flashes.  
Controller’s Trouble LED is Flashing  
1. One or both of the sensors is 100% dirty. Determine which  
sensor’s Dirty LED is flashing.  
TROUBLESHOOTING  
2. Clean the sensor assembly as described in Cleaning  
Procedure.  
Dirty LED  
Sensor’s Dirty LED is Flashing  
Clean the sensor assembly as described in Cleaning Procedure.  
Power LED  
Sensor’s Trouble LED is On  
1. Check the sensor’s Dirty LED. If it is flashing, the sensor  
is dirty and must be cleaned.  
2. Check the sensor’s cover. If it is loose or missing, secure  
the cover to the sensor housing.  
Sensor’s Power LED is OFF  
1. Check the controller’s Power LED. If it is off, determine  
why the controller does not have power and make the  
necessary repairs.  
3. Replace sensor assembly.  
Sensor’s Trouble LED is On But Controller’s Trouble LED is  
Off  
2. Check the wiring between the sensor and the controller. If  
wiring is loose or missing, repair or replace as required.  
Remove JP1 on the controller.  
Controller’s Power LED is OFF  
1. Make sure the circuit supplying power to the controller is  
operational. If not, make sure JP2 and JP3 are set correctly  
on the controller before applying power.  
Printed in U.S.A.  
Edition Date:7/07  
Copyright 2007 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231  
Catalog No:48/50H,P---24SI  
Replaces:48/50H,P---10SI  
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.  
10  
 

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