RE316 Photoelectric Smoke And/Or ROR & Fixed Temperature Heat Detector - Installation Wiring Diagram

Oct 29, 2026

Installation and wiring instructions for the RE316 photoelectric smoke detector with rate-of-rise (ROR) and fixed-temperature heat sensing. Covers typical wiring diagrams for 2-wire and 4-wire multiple-station systems, terminal placement precautions, base and head installation steps, relay NO/NC adjustment, and safety notes to prevent contamination and warranty cancellation. Includes relay contact ratings, detailed testing procedures for jumper settings, reed switch, smoke sensing, and heat sensing, plus operating specifications and maintenance guidance.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages2

Reading Time5 min

AccessFree to download

Typical Wiring Diagram

2-wire multiple-station system

4-wire multiple-station system

Installing the Base

Installing the Head

Adjusting the Relay for NO/NC

Testing

Jumper setting

Reed switch testing

Smoke sensor testing

Heat sensor testing

Specification

Maintenance

RE316SERIES Photoelectric Smoke And/Or ROR & Fixed Temperature Heat Detector Installation Wiring Diagram TYPICAL WIRING DIAGRAM Figure 1(a) shows the typical wiring diagram of the 2-wire multiple-station smoke/heat detector system. RE316 2 WIRE DETECTORS WIRING DIAGRAM Figure 1(b) shows the typical wiring diagram of the 4-wire multiple-station smoke/heat detector system. DO NOT PLACE LINKS BETWEEN THE WIRING POSITIONS OF TERMINALS 2 AND 5 TO PROVIDE POWER SUPERVISION. | WARNING | | --- | | TO PREVENT DETECTOR CONTAMINATION AND SUBSEQUENT WARRANTY CANCELLATION, THE SMOKE DETECTOR MUST REMAIN COVERED UNTIL THE AREA IS CLEAN AND DUST FREE. | INSTALLING THE BASE 1. To insure proper installation of the detector head to the base, all the wires should be properly addressed at installation: (A) Position all the wires flat against terminals. (B) Fasten the wires away from connector terminals. 2. If you use a jumper wire to connect the poles of terminal 2 and 5 when testing the detector loop continuity, be sure to remove the jumper wire prior to the installation of the detector head. 3. The end-of-line device shown in fig. 1(a) and 1(b) should be compatible with the control unit. 4. Open area smoke detectors are intended for mounting on a ceiling or a wall in accordance with the fire standard in your country. 5. The base of the smoke detector can be mounted directly onto an electrical junction box such as an octagonal (75mm, 90mm or 100mm), a round (75mm), or a square (100mm) box without using any type of mechanical adapter. INSTALLING THE HEAD 1. Align the components as shown in Figure 2. 2. Mate the detector head onto the base and twist clockwise to secure it. 3. Do not install the detector head until the area is thoroughly cleaned of construction debris, dusts, etc. Fig. 2 Mating detector head onto base ADJUSTING THE RELAY FOR NO/NC The default condition of relay output is “normally open”(NO) . 1. To adjust the default condition of relay to “normally closed”(NC), take the screw out located on the side between the front cover and base. 2. Refer to figure 3. There is a jumper head next to the relay on the PCB. Remove the jumper head and re-insert it in the NC position. 3. replace the front cover. Carefully Relay contact rating: 1A@30VDC, 0.5A@125VAC. TESTING JUMPER SETTING Fig. 3 Schematic of detector structure When front cover is open. 1. All the alarm signal services, releasing device and extinguisher system should be disengaged during the test period and must be re-engaged immediately at the conclusion of testing. 2.After energizing the detector head for approximately 60 seconds, check to see the indicator red LED flashing once every 4~5 seconds. If red LED fails to flash, it indicates the non-functioning of the detector or faulty wiring. Re-check the wiring or replace the detector if necessary. REED SWITCH TESTING Take the magnet against the position of top cover marked in Fig.2. the detector will alarm after flashing once every 1. 1seconds continuously for several times. If the detector fails to alarm, please re-check the magnet close to the mark on the toper or replace the detector if necessary. SMOKE SENSOR TESTING Allow smoke from a cotton wick or a test smoke aerosol to enter the detector-sensing chamber for several seconds. When sufficient smoke has entered the chamber, the detector will signal an alarm, this being visible by a continuous illumination of the LED. Reset each detector and/or control unit before attempting to test any additional detectors in the same zone. If the alarm fails in this step, it indicates a defective unit, which requires service. HEAT SENSOR TESTING The detector to be tested should be subject to a flow of warm air at a temperature of between 65 °C and 80 °C. (This requirement can be met by some domestic hair dryers) . Proceed as follows: 1. Switch on the warm airflow and check that temperature is correct and stable.

FAQs

Why must the smoke detector remain covered until the area is clean and dust free?

To prevent detector contamination and subsequent warranty cancellation. The document instructs keeping the smoke detector covered until the installation area is clean and dust-free.

How can the relay output be changed from normally open (NO) to normally closed (NC)?

Remove the screw located on the side between the front cover and base, then use the PCB jumper next to the relay: remove the jumper head and re-insert it in the NC position, and replace the front cover.

What test method is used to verify the heat sensor operation?

Apply warm airflow at 65°C to 80°C to the guard protecting the thermistor and confirm the detector alarms within 60 seconds, then remove the heat source, verify the red LED is illuminated, and reset from the control panel. If it does not alarm within 60 seconds, it is too insensitive and needs servicing.

Oct 29, 2026

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