The Honeywell Morley-IAS HM-MCP-GLASS-AP addressable break glass manual call point features a dedicated 'Plug & Play' installation concept engineered to streamline commissioning and site deployment. Designed to interface directly with Morley-IAS addressable fire alarm control panels over an analogue addressable protocol, the device supports both semi-flush and surface-mounted conduit box installations across commercial, institutional, and industrial facilities.
Loop Addressing via Rotary Decade Switches
Device addressing is completed directly on the hardware prior to final termination and mounting. A set of rotary decade switches is located on the rear panel of the call point assembly:
- Decade Switch Configuration: Rotate the rear decade switches to assign the designated loop address required by the Morley-IAS system design sheet.
- Addressable Protocol: The integrated microprocessor communicates analogue addressable status directly back to the fire alarm control panel, enabling single-point physical device tracking on the signaling loop.
- Backward Compatibility: The internal communication architecture maintains full backward compatibility with existing Morley-IAS addressable call point networks.
Mounting Methods and Physical Dimensions
The unit can be secured in either a semi-flush or surface profile depending on wall recessing, backbox provisioning, and architectural requirements. The enclosure is constructed from robust PC/ABS thermoplastic finished in Red (RAL 3001).
| Mounting Configuration | Dimensions (W x H x D) | Unit Weight | Mounting Hardware / Accessory |
|---|---|---|---|
| Semi-Flush Mounting | 89 mm x 93 mm x 27.5 mm | 130 g | Standard recessed electrical back box |
| Surface Mounting | 89 mm x 93 mm x 59.5 mm | 180 g | MUS041W call point surface back box |
Electrical Integration and Signaling Parameters
The call point draws its operating power directly from the Morley-IAS addressable two-wire loop circuit. Field wiring must be verified against loop calculations before terminating:
- Operating Voltage: 15V to 32Vdc maximum loop supply.
- Quiescent Current Consumption: 80 µA at 24Vdc (quiescent without active communications).
- Alarm Current Draw: 130 µA at 24Vdc (with active loop communications).
- Wiring Integrity: Verify loop continuity and polarity prior to snapping the module onto the pre-wired terminal blocks to protect system communication integrity.
Environmental and Placement Constraints
Install the call point along designated escape routes, exit corridors, and stairwells in accordance with EN54 Part 11 placement standards. Ensure environmental operating parameters fall within the verified equipment ratings:
- Ingress Protection: Certified IP24D protection rating against solid objects and water ingress.
- Operating Temperature: -10°C to 55°C.
- Relative Humidity: 10% to 93% non-condensing.
Pre-Commissioning Testing and Element Replacement
System testing can be completed without breaking the primary glass element. A specialized test key (model SC070) is inserted into the access aperture located at the bottom of the unit. Pushing the key upward lowers the glass element carriage and releases the internal microswitch, triggering a functional alarm on the control panel. Device response is monitored via the front diagnostic LED:
- Polling Indication: Blinking RED status controlled by the Morley-IAS fire panel during regular loop polling.
- Alarm Activation: Steady, continuous RED status indicating an activated manual alarm condition.
- Consumables and Spares: Replacement glass elements (pack of five, model MUS155) or alternate resettable flexible elements (pack of ten, model PS230) can be retrofitted without dismounting the back box assembly.
