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USER GUIDE

KRM-1 & KRM-2

 

3 (8) 

 

Produal Oy 

Keltakalliontie 18, 48770 Kotka FINLAND 

Tel: +358-10-219 9100 / Fax: +358-5-230 9210 

[email protected] 

www.produal.com

 

Information is subject to change without prior notice. 

4. 

Installation on a rectangular air duct, see picture below. When installing on a circular air duct, use KS fitting plate 
(B) and rubber bushing (C). 
 

C

B

C

 

 

5. 

When installing on the air ducts with insulation, use the rubber bushing and insert it into opening in the air duct. 
Install the fitting plate (B). Insert the assembled adapter plate (A) into the measuring tube by sliding the measur-
ing tube through the grommet, and screw the adapter plate onto the fitting plate (B) using the 4 self-tapping 
screws. Install the sensor with fitting plate into air duct. Then the insulation (D) can be installed. 
 

B

D

C

A

 

 

6. 

When installing sensor outdoors or in cold environment, special WDG type housing (E) should be used. Housing 
prevents the warm air in the smoke detector duct from condensing. The interior of the housing is insulated with 
foam rubber. 
 

E

 

 

Rubber  
bushing, inner 

outer

Summary of Contents for KRM-1

Page 1: ...eed Depending on the cross section of the ventilation duct the air collecting tube may be cut to a length of 160 mm This minimum length of 160 mm must not be undercut This way up to 100 mm ø can be monitored in conjunction with the FP KRM fitting plate In the ideal case install the KRM when structurally possible where flow meters etc are normally attached so there is a laminar airflow along the me...

Page 2: ... in air duct direction Air duct forking Air duct narrowing air duct enlargement Air duct device Mounting procedure 1 Drill a hole Ø 43 44 mm in diameter at the intended mounting location NOTE Installation of the measuring tube is possible either from the top bottom or side of the channel for all duct cross sections for round ducts as well 2 Determine how long the measuring tube must be If necessar...

Page 3: ...and insert it into opening in the air duct Install the fitting plate B Insert the assembled adapter plate A into the measuring tube by sliding the measur ing tube through the grommet and screw the adapter plate onto the fitting plate B using the 4 self tapping screws Install the sensor with fitting plate into air duct Then the insulation D can be installed B D C A 6 When installing sensor outdoors...

Page 4: ...ination red Test Reset 3 4 Power supply 24 Vac dc 1 2 5 6 7 8 Bus B Bus B Bus A Bus A RS485 for information MOD BAC models KRM 1 KRM 2 KRM 2 MOD KRM 2 BAC NOTES The cable jacket for field wire connecting must be done as near as possible to the terminal block For wires longer than 10 mm the wire must be fixed by a cable clip near the terminal block or insulated in pairs with a suitably protective t...

Page 5: ... D G H J D J 3 For testing the smoke sensor the housing must not be opened It has a self closing test opening J in the centre of the transparent cover Use test gas spray Insert the test spray s tube fully into the test opening appx 1 5 mm deep and release as much test gas as needed until the smoke sensor activates Please do not spray too much otherwise the smoke sensor may display a higher degree ...

Page 6: ...t button or closing the bridge circuit between terminal 9 10 00 99 flashing BUS address Display only with MOD BAC versions after pressing the address buttons T3 and T4 directly on the circuit board LEDs Meaning Explanation Alarm reset red Smoke alarm or failure Reset after failure Briefly press alarm reset button KRM immediately restarts Reset after alarm Press and hold the alarm reset button for ...

Page 7: ...lay flashes relay contamination drops out There is a contact available for this contamination signal terminals 16 17 and it should be connected to the automation station From a 70 contamination level or higher the smoke sensor must be changed Maintenance and repair procedure If due to operational specifications short term shutdowns cannot be tolerated measures must be taken to prevent this if nece...

Page 8: ... 7 Check with the operator about the function of the downstream systems and components such as Turning off of fans Closing of flaps Notification to the building automation system When checking network failure and recovery does the sensor return to its normal function and does it unlock again from the state smoke alarm and return to its normal function when there is no longer any present Release is...

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