Honeywell NOTIFIER 020-772 Fitting Instructions Download Page 1

Check your equipment....

Take suitable anti-static precautions, such as wearing a grounded 
wrist strap, when following ALL instructions. Remove all packaging 
from the kit and ensure that it has not been damaged in transit (and 
that no items are missing - see checklist on the left) before 
proceeding any further. If no damage is evident, proceed using the 
instructions below. In the unlikely event that damage has occurred 
or items are missing, DO NOT PROCEED, contact your supplier 
and refer to the panel’s 

Installation, Commissioning & 

To fit/replace the 4-Way Sounder PCB, 

configure it

 (see page 3), then 

proceed as follows:

1

Only carry out this procedure when mains power to the panel has been 
isolated.

2

Use a 4mm hex key to release the two socket-headed screws (A) that 

secure the cover (B) to the back box (C).

3

Carefully withdraw the cover from the back box. Store cover safely.

4

Ensure the batteries (D) are disconnected.

5

If replacing the 4-Way Sounder PCB, temporarily disconnect all 

external cables to the Main PCB.

Procedure for Fitting/Replacing the 4-Way Sounder 
PCB

Your 4-Way Sounder PCB Kit, PN: 020-772 should 
contain:
4-Way Sounder PCB

PN: 124-372

16-way Ribbon Cable (x1)

PN: 082-252-002

Nylon Spacers (x2)

PN: 423-262

Nylon locking rivets (x2)

PN: 423-261

Fitting/Replacing the 4-Way Sounder PCB

1

6

Disconnect the earth lead from the right-angled, blade connector (E) 

located at the top right-hand corner of the Main PCB.

7

Carefully push up the two PCB-retaining clips (F) until the top edge of 

the Main PCB is free to move - the bottom edge of the PCB is still 
located by the three tabs (G).

Note:

If a 2-Way Relay PCB is fitted, slide it to the left to disengage 

socket connector SK2 on the Main PCB. Once disengaged, there 
is no need to remove the 2-Way Relay PCB from the panel.

8

Leave the ribbon cable connected at connector SK4 (H) on the Main 

PCB, disconnect the ribbon cable at socket connector SK2 on the PSU 
PCB.

DO NOT forget to reconnect this cable before re-fitting the main 

PCB.

9

Gently pull the top of the Main PCB away from the back box and lift the 

PCB clear of the back box and store safely.

Removing the Main PCB

A

A

C

C

B

B

Main
PCB

Main
PCB

1

0

1

1

3

3

2

2

4

4

D

D

Main PCB

E

E

G

G

F

F

H

H

For clarity, 
batteries are 
not shown.

For clarity, 
batteries are 
not shown.

9

9

7

7

OBSERVE PRECAUTIONS FOR 

HANDLING ELECTROSTATIC 

SENSITIVE DEVICES

OBSERVE PRECAUTIONS FOR 

HANDLING ELECTROSTATIC 

SENSITIVE DEVICES

ATTENTION

ATTENTION

The 4-Way Sounder PCB (kit PN: 020-772) supports four configurable monitored outputs and two configurable digital 
inputs. Various preset combinations of input and output functions are selected via a DIP switch. Up to two, 
independently-configurable 4-Way Sounder PCBs may be fitted in the fire control panel. Provision is made for 
connecting an SST LED box.

Output options are:

 sounder, ÜE transmission circuit, SST extinguishing system (three output circuits are used: one 

for SST output and two for SST inputs), fault routing or fire routing. To connect an SST, a Routing Termination kit (PN: 
020-773) and LED Display Box (English version PN: 020-769-001 or German version 020-769) are also required. The 4-
Way Sounder PCB detects partial open and short circuits on the output circuits, to meet EN54-13 requirements.

Input options are:

 fire transmission confirmed, fault transmission confirmed, class change or day mode.

Depending upon its output load, the PCB can be powered from the panel or from an external dc power supply, as set by a 
jumper link.

997-536-000-2, Issue 2 July 2009

Summary of Contents for NOTIFIER 020-772

Page 1: ...age socket connector SK2 on the Main PCB Once disengaged there is no need to remove the 2 Way Relay PCB from the panel 8 Leave the ribbon cable connected at connector SK4 H on the Main PCB disconnect the ribbon cable at socket connector SK2 on the PSU PCB DO NOT forget to reconnect this cable before re fitting the main PCB 9 Gently pull the top of the Main PCB away from the back box and lift the P...

Page 2: ...h with the face of the PCB c Holding the spacer against the PCB now push the rivet fully home the jaws of the rivet expand inside the spacer to lock it to the PCB Ensure the spacer is orientated as shown to clear any components 18 Inspect the 4 Way Sounder PCB to be fitted in the second layer position If there is no evidence of damage proceed as follows 19 Connect the 16 way ribbon cable S observe...

Page 3: ... Link JP1 A B R63 4 Other Configuration Options DIP switches 5 8 settings Function 5 6 7 8 Steady Pulsing 0 0 0 0 Steady sounders 1 0 0 0 Pulsing sounders 1second on 1 second off Sounders 250mA 0 0 0 0 Sounders 250mA Use this setting if one or more of the output circuits has a load current of 250mA or above 0 1 0 0 Sounders 250mA Use this setting if none of the output circuits has a load current g...

Page 4: ...input are determined by the configuration options described on the previous page External PSU If an external PSU is being used connect the dc input as shown at left and the fault input as shown below Links JP1 and R63 must be set correctly as described on the previous page 1 2 3 4 TB3 TB2 TB4 TB1 PL1 PL2 SK1 SK2 IN CIRC FS02 DEOL MON SOUNDER PCB SW1 JP1 A B 1 1 2 3 4 5 6 7 8 1 2 SST 0V 0 20 30V dc...

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