CHQ-DZM-IS-DIN Instructions

Hochiki Europe (UK) Limited 2-3-0-1366/ISS3/DEC11 HOCHIKI INTRINSICALLY SAFE COMPATIBLE DUAL ZONE MONITOR INSTALLATION INSTRUCTIONS Products covered: CHQ-DZM(SCI)-IS, CHQ-DZM/DIN(SCI)-IS Function The CHQ-DZM(SCI)-IS is an input monitoring device which connects to the Hochiki ESP analogue system. It is capable of monitoring two zones of intrinsically safe detectors through an intrinsically safe barrier. The unit also provides two controllable outputs, which can be used to drive remote LEDs (if supported by the Control Panel). The unit is available as either a “Smart-Fix” module box or as a DIN Rail mountable unit with both variants featuring an integral short-circuit isolator. Specification Order codes CHQ-DZM(SCI)-IS and CHQ-DZM/DIN(SCI)-IS* Transmission method Digital communication using ESP Loop Operating voltage 17 – 41 VDC Quiescent current 330 µ A Current consumption whilst polling 22 mA ± 20 % Isolator leakage current (switch open) 8 mA (max) Isolator switch current (switch closed) 1 A (max) External supply Operating voltage 20-28.8 VDC (24 VDC nominal) Current consumption when in fire 70 mA (Both zones in fire) Output rating 24 VDC 8.5 mA Zone loading (max) Up to 20 SLR-E-IS or DCD-1E-IS detectors (or a mixture of both), Up to 20 CCP-E-IS manual call points E.O.L device (see note below) 10 k  resistor Zone resistance 50  (Max) Zone capacitance 0.3 µ F (Max) Colour and enclosure material CHQ Module & CHQ-BACKBOX White ABS DIN Module Green ABS * Fire alarm control panel compatibility required for these products. See AP0127 for short-circuit isolator specifications. NOTE: The EOL resistors supplied with the CHQ-DZM(SCI)-IS comply with Hochiki’s BASEEFA certification for conventional I.S. detectors. The user must check that any EOL resistors used comply with the certification requirements for the proposed installation. Components Standard "Smart-Fix" Modules are supplied as two individual components (see Fig 1 & 2). DIN versions are supplied as one unit (see Fig 3). Fig 1 Fig 2 "Smart-Fix" CHQ Module (Back Plate inc PCB Component) (Note: configuration of Wiring Terminal blocks differs between models) CHQ-LID Transparent Module Lid (Supplied with four screws and acrylic retaining washers)