installation, commissioning, testing and trouble shooting
DESCRIPTION
Installation, Commissioning, Testing and Trouble shootingTRANSCRIPT
INSTALLATION, COMMISSIONING, TESTING AND TROUBLESHOOTING
LINEAR TEMPERATURE SENSING CABLE ‐ INSTALLATION GUIDANCE NOTES
The PROLINE type TH digital linear heat sensor cable employs 2 x tin plated copper coated steel conductors which are twisted and tensioned during manufacture to ensure maximum physical contact for alarm signaling. During installation it is highly recommended that a degree of tension is maintained on the cable as it is un‐reeled and that only the length being fixed locally be reeled off at any one time. This will ensure ease and efficiency of installation. Installation of the sensor cable is recommended at ‐10C or above. Continuous operation at ‐30C has been UL tested and ‐40C/‐40F by F.M. The Linear Heat Detector must be installed without “tees or spurs” in accordance with applicable sections of NFPA 70 National Electrical Code, NFPA 72 National Fire Alarm Code, local recognized and adopted Fire detection system standards or authority having jurisdiction. For space/open area risk applications the heat sensor cable may be installed at ceiling level within 500mms – 20 inches – of the ceiling. The Linear heat sensor also has the benefit of being suitable for installation close to the point of risk. Care must always be taken to ensure the sensor cable presents no physical obstruction to routine maintenance or repair of the protected risk, as this may result in the removal of the sensor cable for such work without is subsequent replacement. On smooth ceilings the distance between detector runs shall not exceed the U.L. Listed 10.6metes or 35ft recommended spacing. With sensor cable runs closest to outer walls at 50 percent of the listed spacing. When linear detection systems are used to activate extinguishing systems – special spacing guidelines may also be applicable to the specific hazard protected. Professional fire engineering judgement must be applied in determining final detector location and spacing on all installations. Where required 2 conductor short term fireproof interconnecting cable may be installed between risk area located linear heat sensor cable and remotely installed interface unit. Maximum 50 ohms resistance where Proline ZI interface units are used. HAZARDOUS AREA USAGE PROLINE interface units MUST always be installed within a site designated SAFE area using end user or authority having jurisdiction acceptable short term fire‐proof interconnecting cable between the interface and hazardous area installed Eexe junction box and linear heat sensor cable. An MTL 7758+ zener barrier – BASEEFA certification BAS01ATEX7217/Ex01E2219, ATEX certified MTL02ATEX7700BX or Pepperl + Fuchs GmbH Z757 – ATEX approval BAS01ATEX7005 Issue 7 is to be connected between the interface unit and interconnecting or linear heat sensing cable.
PRODUCT COMMISSIONING PROCEDURES
PASSIVE CHECKS Visually inspect the linear heat sensor cable to re‐confirm correct alarm temperature rating has been supplied and installed in accordance with customer specification. Check EACH sensor cable for mechanical damage and that correct fixing Devices have been utilized with maximum spacing’s between fixings kept in accordance with manufacturers’ recommendations. Ensure the sensor cable is not installed against sharp edges and that all bends do not exceed specified minimum bend radius Verify correct installation location of the sensor cable. Inspect ALL sensor cable joints and terminations to ensure they are correctly installed and appropriate for the application and local environment Ensure the correct end of line resistor value has been used for the interface or central control equipment to which it is connected. Check correct wiring connection of the sensor cable for open circuit fault/trouble and short circuit fire/alarm signaling. This should be either:
a. Directly to a Central Fire Alarm Control Panel b. Via end user acceptable interconnecting cabling c. Through a PROLINE supplied ZI interface unit
ACTIVE CHECKS PLEASE DISABLE ASSOCIATED EXTINGUISHING SYSTEM OPERATION OR CENTRAL FIRE STATION SIGNALLING PRIOR TO CARRYING OUT THE FOLLOWING: REMEMBER TO RE‐ENABLE THE SAME UPON COMPLETION OF CHECKS. Check sensor cable conductor resistance is within the manufacturing specification range of 88.1 to 92.1 ohms/1000 metres sensor cable length Verify correct fault or trouble alarm signaling at sensor cable interface unit where supplied and at any central Fire Alarm Control Panel to which the linear detection is connected by disconnecting one of the sensor cable conductors from the in‐line or end of line terminations. Verify correct alarm signaling by placing a short circuit across the sensor cable conductors. After correct signaling is confirmed remove the short circuits and re‐set the system. Where PROLINE supplied ZI‐01 single channel interfaced units are installed please read the Installation & Operating guide supplied with the device. This includes description of the following three points:
1. Local and remote sensor cable termination 2. Simple push button calibration facility 3. Accurate point location indication via a colour coded
backlit LCD display.
THE ABOVE CHECK SHOULD BE CARRIED OUT BY QUALIFIED – END USER SITE APPROVED INDIVIDUALS AND SHOULD BE PERFORMED UPON INITIAL EQUIPMENT INSTALLATION AND AT LEAST ONCE A YEAR THEREAFTER – or more frequently if required by authority having jurisdiction.
PRODUCT TEST PROCEDURES
Please ensure that all devices designed to operate automatically upon receipt of an alarm condition from the linear heat detection system are first disabled before carrying out the following tests. It is recommended that one of the following test procedures be adopted. Selection of the most appropriate identified test options will be dependent upon whether the end user wishes to view a simulated alarm or actual flame test
TEST PROCEDURE – Option 1
Fault‐Trouble Condition – disconnect one of the sensor cable conductors from an in‐line joint or end of line terminations. Fire/Alarm Condition – place a short circuit across the sensor cable or interconnecting cable conductors.
TEST PROCEDURE – Option 2
Fault/Trouble Condition – As option 1 above Fire/Alarm –Operate key switch on in‐line located test point device if installed. This places a short circuit across sensor cable conductors.
TEST PROCEDURE – Option 3
Fault/Trouble Condition – As option 1 above Connect “in series” a short test length of PROLINE TH sensor cable and apply heat or flame to that length to generate an alarm signal. After testing remove the short length and re‐connect original installed sensor cable. This may be an end user preferred test method but must NEVER be carried out in areas deemed to be classified as HAZARDOUS.
SYSTEM MUST NOW BE RE‐SET SENSOR CABLE TROUBLESHOOTING – NO PROLINE SUPPLIED ZI INTERFACE INCLUDED
CONDITION ACTION OPEN CIRCUIT ON SENSOR CABLE CHECK END OF LINE RESISTOR IS FITTED CORRECTLY
OPEN CIRCUIT ON SENSOR CABLE ENSURE GOOD CONNECTIONS WITHIN ANY INLINE JUNCTION BOXES
OPEN CIRCUIT ON SENSOR CABLE PHYSICALLY CHECK SENSOR CABLE FOR MECHANICAL DAMAGE
SHORT CIRCUIT ON SENSOR CABLE MEASURE SENSOR CABLE RESISTANCE USING MULTI‐METER TO HELP IDENTIFY LOCATION OF SHORT CIRCUIT
SHORT CIRCUIT ON SENSOR CABLE HAS SENSOR BEEN EXPOSED TO TEMPERATURES ABOVE ITS ALARM RATING
SHORT CIRCUIT ON SENSOR CABLE CHECK FOR VISIBLE SIGNS OF PHYSICAL CRUSHING
Registered Office: Registered No: 4421495 www.lineardetection.com Kings Worthy House V.A.T. No: GB799 9244 45 [email protected] Court Road, Kings Worthy Tel: 00357 26 623660 Winchester Hampshire SO23 7QA U.K.