Siemens OOH941 Installation Instructions Manual Download Page 4

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OOH941 Selectable Application Profiles

Telecommunication (See
Special Application)

Very controlled environment, clean, temperature closely regulated, high value clean signal
processing equipment operating and high air velocity conditions. Often has high ceilings. Meets
the detection requirements of NFPA 76 Standard for the Protection of Telecommunication
Equipment by providing a Very Early Warning Fire Detection Pre-Alarm to prevent downtime and
maintain critical business continuity.

Incipient (See Special
Application)

Very controlled environment, clean, temperature closely regulated. Provides early warning
detection alarm.

Ion equivalent

Used as an alternative to Ionization detector. Sensitive to flaming fires and small fire signature
particles. Can be used for cross zoning suppression requirements.

Data Center (open area
protection)

Used for open area protection in controlled environment containing data processing equipment.

Computer Room

Very controlled environment, clean, temperature closely regulated, high value clean signal
processing equipment operating and high air velocity conditions.

Precious Storage

Sensitve materials or equipment storage, clean dust-free environment, earliest warning desired.

Power Generation

Controlled environment, minor or no temperature swing, RF, welding, electrical arcing present.
Some airborne (deceptive phenomena) contaminant present.

Hospital

Controlled clean environment. High level risk. Some exposure RF generating equipment.
Exposure to cleaning solvents.

Health Care

Higher level risk, relatively clean, electronic equipment. Some chemical and cleaning vapor
exposure.

Dormitory

Airborne dust and temperature changes, living quarters. Cooking fumes, smoking and steam.

Utility Room

Transformer room, normal to somewhat dirty environment, heat from running equipment.

Lobby

Relatively clean area, temperature changes, cellular phones, some outside particulate.

Office

Reasonably clean, climate-controlled atmosphere.

Hotel

Life safety, some temperature swings, steam, smoking and cooking possible.

School

Life safety, some temperature swings and airborne contaminants.

Warehouse

Airborne dust, equipment, forklift and light to medium dock area and exhaust fumes.

Manufacturing

Semi-controlled environment can include soldering, welding, airborne contaminants including
chemical vapor exposure.

Parking Garage

Airborne dust. Car and diesel fumes, large temperature swings.

Open Environment

Large open areas, atriums, arenas, stadiums. Temperature swings, deceptive phenomena from
fumes possible.

EMI noise

Electrical interface, RF and our specialized equipment generating electrical signal. Other
environmental conditions are normal.

Hostile

Dirty, dusty, humid, operating equipment, RF present, wide temperature swings.

Duct

High air velocity, dirty, dusty, humid, wide temperature swings.

Summary of Contents for OOH941

Page 1: ...s area is protected adequately by each smoke detector This is why it is mandatory to closely follow the installation drawings In all installations place the detector on the ceiling a minimum of 6 inches from a side wall or on a wall 12 inches from the ceiling For thermal detection use the matrix below Spacing Feet Temperature Rating F With without Guard Model 50 135 145 155 165 175 With and withou...

Page 2: ...hapter for High Air Movement Areas and Control of Smoke Spread The detectors can also be installed in duct applications between 0 and 4000 ft min For duct installations follow detector installation requirements in NFPA 90A Chapter for Special Ceiling Construction Factors When the detectors employ a fixed temperature rating of 165 F 74 C or less they are intended for a maximum installation temperat...

Page 3: ...sure that the panel supports Isolator mode for the OOH941 product version 30 Isolator mode must not be used with a OOH941 product version 30 You will find the product version number on the detector label DETECTOR MOUNTING The recommended orientation of the detector for wall mounting is shown in Figure 4 To ensure proper installation of the detector head into the base be sure the wires are properly...

Page 4: ...welding electrical arcing present Some airborne deceptive phenomena contaminant present Hospital Controlled clean environment High level risk Some exposure RF generating equipment Exposure to cleaning solvents Health Care Higher level risk relatively clean electronic equipment Some chemical and cleaning vapor exposure Dormitory Airborne dust and temperature changes living quarters Cooking fumes sm...

Page 5: ...shown after System reset which represents the non alarm condition OOH941 is a polarity insensitive detector Line 1 and Line 2 can be either line of the loop 5 NO C NC 6 SUPERVISED AND POWER LIMITED RELAY CONTACTS 3A 120 VAC 3A 30 VDC DO NOT USE AN END OF LINE DEVICE OPTIONAL REMOTE ALARM INDICATOR MODELS 8727W 8727C RL HW RL HC TO NEXT BASE TO NEXT BASE DO NOT USE AN END OF LINE DEVICE DETECTOR BA...

Page 6: ...e can enter the sensing chamber and alarm the control panel when the detector reaches the programmed obscuration concentration level The OOH941 detectors can also be tested individually using the DPU Refer to the DPU manual P N 315 033260 MAINTENANCE The control unit automatically indicates the trouble message for the OOH941 detector whose smoke chamber changes to the level where the set sensitivi...

Page 7: ... profiles settings are available and suitable for these and other applications See the table titled Selectable Application Profiles table in this document for options and application descriptions Failure to follow these guidelines may result in unwanted nuisance alarms Method to configure the detector s special application sensitivity The detector default sensitivity is for a standard office envir...

Page 8: ...rham Park New Jersey 07932 www siemens com buildingtechnologies Siemens Canada Limited Smart Infrastructure 2 Kenview Boulevard Brampton Ontario L6T 5E4 Canada Siemens Industry Inc Data and design subject to change without notice A6V10324659_en _j P N A5Q00044198 ...

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