System Sensor DH400ACDC, Installation And Maintenance Instructions Manual, Page: 13 / 16

Electrical Specifications
Power supply voltage: 20-29 VDC 24 VAC 50-60-Hz 120 VAC 50-60 Hz 220/240 VAC 50-60 Hz
Input capacitance: 270
µ
F max. 270
µ
F max. N/A N/A
Reset voltage: 3.0 VDC min. 2.0 VAC min. 10 VAC min. 20 VAC min.
Reset time (with RTS451): .03 to 0.3 sec. .03 to 0.3 sec. .03 to 0.3 sec. .03 to 0.3 sec.
Reset time (by power down): 0.6 sec. max. 0.6 sec. max. 0.6 sec. max. 0.6 sec. max.
Power up time: 34 sec.max. 34 sec. max. 34 sec. max. 34 sec. max.
Alarm response time: 2 to 17 sec. 2 to 17 sec. 2 to 17 sec. 2 to 17 sec.
Sensitivity Test: See head label See head label See head label See head label
Electrical Ratings
Power Supply Voltage 20 - 29 VDC 24 VAC 50 - 60 Hz 120 VAC 50 - 60 Hz 220/240 VAC 50 - 60 Hz
CURRENT REQUIREMENTS (USING NO ACCESSORIES)
Max. standby current 25 mA 35 mA AC avg. 20 mA AC avg. 20 mA AC avg.
Max. alarm current 95 mA 55 mA AC avg. 55 mA AC avg. 30 mA AC avg.
CONTACT RATINGS
Alarm initiation contacts (SPST) 2.0A @ 30 VAC/DC (0.6 power factor)
Alarm auxiliary contacts (DPDT) 10A @ 30 VDC
10A @ 250 VAC
Trouble contacts (SPST) 0.3A @ 32 VDC (resistive)
Note: Alarm auxiliary contacts must switch 500 mA minimum at 24VDC. Alarm auxiliary contacts shall not be
connected to inititaing circuits of control panels. Use the alarm initiation contact for this purpose.
ACCESSORY CURRENT LOADS AT 24 VDC
DEVICE
APA451
PA400
RA400Z
RTS451/ RTS451KEY
STANDBY
12mA MAX
0mA
0mA
0mA*
ALARM
30mA MAX
15mA MAX
10mA MAX
10mA MAX*
ANY COMBINATION OF ACCESSORIES MAY BE
USED SUCH THAT THE GIVEN CURRENT LOADS TOTAL:
100mA OR LESS IN THE STANDBY STATE,
150mA OR LESS IN THE ALARM STATE.
*NOTE: WHEN INITIATING AN ALARM, THE RTS451/
RTS451KEY REQUIRES 95 mA MAXIMUM IN
PRE-ALARM AND 103 mA MAXIMUM IN ALARM.
NOMINAL STANDBY CURRENT IS 0mA. ALARM
CURRENT IS 10 mA MAXIMUM WHEN TEST
MAGNET IS REMOVED.
Three-Year Limited Warranty
System Sensor warrants its enclosed air duct smoke detector to be free
from defects in materials and workmanship under normal use and service
for a period of three years from date of manufacture. System Sensor makes
no other express warranty for this air duct smoke detector. No agent, rep-
resentative, dealer, or employee of the Company has the authority to in-
crease or alter the obligations or limitations of this Warranty. The
Company’s obligation of this Warranty shall be limited to the repair or re-
placement of any part of the air duct smoke detector which is found to be
defective in materials or workmanship under normal use and service dur-
ing the three year period commencing with the date of manufacture. After
phoning System Sensor’s toll free number 800-SENSOR2 (736-7672) for a
Return Authorization number, send defective units postage prepaid to: System Sensor, Repair Department, RA #__________, 3825 Ohio Avenue,
St. Charles, IL 60174. Please include a note describing the malfunction and
suspected cause of failure. The Company shall not be obligated to repair
or replace units which are found to be defective because of damage, un-
reasonable use, modifications, or alterations occurring after the date of
manufacture. In no case shall the Company be liable for any consequential
or incidental damages for breach of this or any other Warranty, expressed
or implied whatsoever, even if the loss or damage is caused by the
Company’s negligence or fault. Some states do not allow the exclusion or
limitation of incidental or consequential damages, so the above limitation
or exclusion may not apply to you. This Warranty gives you specific legal
rights, and you may also have other rights which vary from state to state.
D400-13-00 13 I56-555-08