McQuay smoke detector User & Installation Manual

The MQuay smoke detector is designed specifically for applications where standard external mount detectors cannot be utilized, such as air shafts, plenum spaces, or applications requiring extremely low, or no air velocity. The detector provides early detection of smoke and combustion present in the air of a duct supply, return, or both, in commercial, residential, and industrial applications. Contents • Specifications.............................................................................................................. page 2 • Terminal Connections................................................................................................. page 2 • Installation .................................................................................................................. page 2 Installation Manual IM: 908 Smoke Detector Group: MPS Date: January 2008 Supersedes: None

Specifications Table 1: Unit Specifications Terminal Connections Prior to connecting input power to the duct unit, determine the correct input voltage/current availability and connect to the correct terminals. Figure 1. Dry Contact Outputs Alarm Installation 1 The smoke detector can be mounted in the duct or in the return air section of the unit. If installing inside the unit, locate an area where there is a uniform, non-turbulent airflow of between 500 and 3000 ft/min (example shown in Figure 2). Other possible installation locations are inside the economizer and inside the curb. Figure 2. Non-Turbulant Airflow Area for Mounting 2 Mount a 4 x 4 junction box in this non-turbulant airflow area. Twist the smoke detector onto the screws on the top of the junction box (Figure 3) to form a complete installed unit (Figure 4). Figure 3. Mounting the Smoke Detector to Junction Box Figure 4. Junction Box and Smoke Detector Installed 3 Run the wires for the 24 VAC and NC contacts back to the control panel. Note: For Maverick units, the wires may be run with the existing exhaust fan wiring or economizer wiring. Power Requirements Standby Current 60 Hz Alarm Current 24 V (ac) – 54.4 mA 24 V (dc) – 15 mA 115 V (ac) – 31 mA 230 V (ac) – 18 mA 24 V (ac) – 139 mA 24 V (dc) – 48 mA 115 V (ac) – 34 mA 230 V (ac) – 20 mA Unit Ratings Alarm Contacts: 1 set form “C” rated at 10 A @ 115 V (ac) resistive 1 form “A” rated at 2 A Trouble Contact: 1 set form “B” rated at 10 A @ 115 V (ac) resistive Air Velocity 0 to 3000 ft/min. Ambient Temperature: 32° to 140°F (0° to 60°C) Humidity: 0% to 85% RH non-condensing/non- freezing Material: White platic base/housing and detector Dimensions: 6" diameter, 4" H overall/2.6" front to back Max. Weight: 1.0 lb Radioactive element: Americum 241, 0.9 micro curie Mounting: Standard 4" square back box DANGER Moving machinery and electrical power hazards. Will cause severe personal injury or death. Disconnect and lock off all power before servicing equipment. CAUTION Sharp edges on sheet metal and fasteners can cause personal injury. This equipment must be installed, operated, and serviced only by an experienced installation company and fully trained personnel. 8 9 10 ALM - N.O. ALM - COM ALM - N.C. 15 A @ 124 V (ac) 10 A @ 277 V (ac) 7 A @ 30 V (dc) 1/4 HP @ 125/250 V (ac) (N.C.) 1/3 HP @ 125/250 V (ac) (N.O.) T-STAT TERMINAL ° R MPS TERMINAL ° R