OPERATION AND MAINTENANCE MANUAL mcr LAM vents Table of Contents Introduction ......................4 Intended use ...................... 4 Design and principle of operation ..............4 Shipment and delivery ..................5 Installation ......................6 Roof installation examples ................. 7 Wall installation examples ................. 8 Limit switches ....................
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OPERATION AND MAINTENANCE MANUAL mcr LAM vents IMPORTANT ! For safety reasons, the thermal release valve in pneumatically actuated units is not enabled at the factory. Do not use the unit without prior enabling the thermal release valve! Enable the thermal release valve and screw in the CO bottle (Sec.
Compliance of mcr LAM louvered vents with the ITB’s Technical Approval No. AT-15- 8192/2015 is confirmed by the Certificate of Conformity No. ITB-2461/W. mcr LAM smoke exhaust vents are part of the overall MERCOR smoke exhaust system, which includes also PROLIGHT leaf vents, smoke vents integrated with in mcr PROLIGHT continuous rooflights, mcr PROSMOKE smoke curtains, MCR9705 and MCR0204 control units, and other products of this kind.
• electrical 230V AC (daily ventilation only). Only pneumatically operated mcr LAM smoke vents are equipped with flow control valves with thermal release valve (including thermal fuse). The louvered vents may be operated locally - manually or automatically by thermal release valves (in the case od smoke vents) or remotely by an MCR smoke control panel or fire alarm control panel.
OPERATION AND MAINTENANCE MANUAL mcr LAM vents Figure 4. Mounting position of mcr LAM vent installed in a wall Louvered vent Rain shields (optional) The vent bases are designed for trimming with roofing paper or PCV roofing membrane or roofing sheet metal.
Figure 6. mcr LAM vent installed on a panel roofing system 1. Base of mcr LAM vent 2. Roofing panel Figure 7. mcr LAM vent c/w roof curb mounted on steel structure. Base of mcr LAM vent Roof curb Thermal insulation...
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With the rain shield in place, the assembly is not as yet weatherproof. To make it fully weatherproof, the joint between the base and the wall surface must be sealed. Figure 9. mcr LAM vent with rain shields in place 1. mcr LAM vent 2.
OPERATION AND MAINTENANCE MANUAL mcr LAM vents H+250 B + 350 8 Limit switches mcr LAM vent can be fitted with limit switches to indicate: fully open position fully open position or any mid-position fully open, fully closed or any mid-position.
The limit switches fitted on mcr LAM louvered vents are factory pre-set. These limit switches might get misadjusted during transport and then the adjustment procedure described in the manual Connection and Adjustment of COMEPI limit switches in mcr LAM units should be followed.
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OPERATION AND MAINTENANCE MANUAL mcr LAM vents Figure 13. Connection of union with a copper/steel air tube Copper tube Compression ring Body IMPORTANT: For safety reasons, the thermal release valve fitted in the vent is not engaged before shipping. Therefore, the valve must be engaged once the vent has been installed on the roof.
OPERATION AND MAINTENANCE MANUAL mcr LAM vents The following two types of pneumatic actuators area used: (smoke exhaust) or by compressed air (natural ventilation) – for 1. Powered by CO opening and closing. Types of control: C1 – only opening (closing vents by hand), C2 –...
In louvered vents daily ventilation is effected by actuators which open the vent to let the smoke out. In order to enable using the mcr LAM louvered vents w/ pneumatic actuators for daily ventilation the pneumatic system must be provided with ventilation boxes (with a double-pipe...
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OPERATION AND MAINTENANCE MANUAL mcr LAM vents Figure 17. Pneumatic diagram showing connection of mcr LAM louvered vent fitted with a pneumatic actuator (type control C2) with the alarm and ventilation boxes 1. mcr LAM vent fitted with a pneumatic actuator 2.
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Ventilation box with a priority valve (such as LUK2 or PLZ) Figure 19. Pneumatic diagram showing connection of mcr LAM vent fitted with a pneumatic actuator (type control C1) and gas spring with alarm and ventilation boxes mcr LAM vent fitted with a pneumatic...
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LT ventilation switch to the control unit in accordance with the wiring diagram included in the control unit Operation and Maintenance Manual (OMM). Figure 20. Idea diagram showing connection of mcr LAM vent fitted with 24 V electric actuator (type control E1) to enable its use for daily ventilation...
NOTE: Do not use ice melt salts on roofs where there are mcr LAM louvered vents. Salt can discolour or even damage the polycarbonate panels, acrylic domes or aluminium sections. Note that the resulting damage is not covered by the warranty.
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1. Devices should be subject to periodical servicing inspections every 6 months during the entire period of their operation. 2. The servicing inspections should be performed by companies having adequate authorization of MERCOR SA. 3. On issues related to service please contact a local representative of “MERCOR” S.A. Page 19 of 20...
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