MGC 400 Series Low Frequency Sounder User Manual

: September 20, 2024
: MGC

Table of Contents

400 Series Low Frequency Sounder
Specifications
Product Usage Instructions
Setting the DIP Switches
- SW1 Settings
- SW2 Settings
Mounting Sounder to the Wall or Ceiling
Removing the Cover from the Mounting Plate
- FAQ
What is the recommended spacing for notification
What are the audible ratings of the sounder?

400 Series Low Frequency Sounder

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Specifications

Operating temperature: Not specified
Humidity range: Not specified
Nominal Voltage: 16 – 33 VDC / VFWR
Operating Voltage Range (RMS): Not specified
Frequency Range: Not specified
Input terminal wire gauge: Not specified
Installation environment: Not specified

Product Usage Instructions

Setting the DIP Switches

Instructions on how to set the DIP switches for synchronized and
non-synchronized operation.

SW1 Settings

Signal Rate:
- Continuous: OFF
- Temporal 4: ON
- Temporal 3: ON
- 20 BPM: OFF

SW2 Settings

Input:
- SYNCHRONIZED: OFF (default)
- NON-SYNCHRONIZED: ON

Mounting Sounder to the Wall or Ceiling

Detailed steps on how to mount the sounder to the wall or
ceiling, including disassembly, attaching the mounting plate,
attaching the sounder, and setting the DIP switches before
installation.

Removing the Cover from the Mounting Plate

Instructions on how to remove the cover from the mounting plate
for maintenance or adjustments.

FAQ

What is the recommended spacing for notification

appliances?

MGC recommends spacing notification appliances in compliance
with CAN/ULC S524 and NFPA 72.

What are the audible ratings of the sounder?

The sounder has audible ratings for high volume and normal
volume at different operating voltages.

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Low Frequency 400 Series Notification Appliance – Sounder

About this Manual
This manual is included as a quick reference for installation. For further information on the use of this device with an FACU, please refer to the panel’s manual.
Note: This manual should be left with the owner/operator of this equipment.
This manual covers the following models:
FH-400-LF-RR Red wall and ceiling mounted low frequency sounder
FH-400-LF-WW White wall and ceiling mounted low frequency sounder
Notes · DO NOT PAINT OR ALTER FACTORY APPLIED FINISH IN
ANY WAY. · NE PAS PEINDRE OU MODIFIER LA FINITION
ORIGINALE. · Use the information in this document to determine the total
current draw of the devices. The total current draw of the devices must not exceed the power supply of the panel. In all cases, the installer should consider the voltage drop to ensure that the last device on the circuit operates within its rated voltage. · Wiring must be in accordance with CSA C22.1 Section 32

Description

The low frequency 400 series sounder provides a wide range of low frequency audible settings in a single compact device. These low frequency devices operate within a range of 520 Hz ± 10% which address the NFPA 72 sleeping space requirements. The low frequency sounder can be synchronized using an FACU or PSU with the MGC protocol or through an external sync module for compatibility with any UL/ULC listed FACU or PSU.
Sounder models are approved for wall and ceiling installations.
Specifications

Operating temperature: Humidity range: Nominal Voltage: Operating Voltage Range (RMS): Frequency Range: Input terminal wire gauge: Installation environment:

0°C to 50°C (32°F to 122°F) 0% to 93% Regulated 24 VDC / 24 VFWR
16 – 33 VDC / VFWR
520 Hz ± 10% 22 AWG to 12 AWG For indoor use only

Setting the DIP Switches
12 12 OFF ON

SW1 SW2

NOTE for SW2: Use NON-SYNCHRONIZED when the appliances do not need to be synchronized. Use SYNCHRONIZED when synchronization is required, either through a sync module or built-in synchronization on the control unit.
When SYNCHRONIZED is selected, the settings for DIP switch SW1 are ignored. When NON-SYNCHRONIZED is selected, the sounder will sound only the audible pattern as selected through DIP switch SW1.

SW1

Signal Rate Continuous Temporal 4 Temporal 3 20 BPM

1 OFF ON ON (default) OFF

2 OFF OFF ON (default) ON

SW2

Input SYNCHRONIZED NON-SYNCHRONIZED

1 OFF (default) ON

Sounder Volume High Normal

2 ON OFF (default)

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Wiring

From FACU or previous

+ –

device

To next

– +

device or end of line

Dimensions

6.06″ (154 mm)

Mounting Sounder to the Wall or Ceiling

MGC recommends spacing notification appliances in compliance with CAN/ULC S524 and NFPA 72.
When mounting the device on the wall, mount the unit with the MGC logo at the bottom. The appliance is compatible with single gang, double gang or 4″ square boxes.
1. Before mounting, disassemble the unit as shown below. Remove the nameplate and securing screw first.
2. Attach the mounting plate to the electrical box with the 2 included mounting screws.
3. Attach the sounder to the mounting plate with the 2 included screws.
4. Attach the cover with the included securing screw and snap the nameplate over the securing screw.

Note: Set the DIP switches before installing the device in the mounting plate.

2 #6-32 x 0.5 screws for attaching mounting plate to gang box

2 #6-32 x 0.5 screws for attaching device to mounting plate

Cover

Front view

6.06″ (154 mm)

Bottom view

1.38″ (35 mm)
1.31″ (33 mm)

Single gang box

Mounting plate

Sounder

6-32. 25 securing screw

Nameplate

Removing the Cover from the Mounting Plate

To remove the cover from the mounting plate, remove the nameplate and the securing screw, then insert a flathead screwdriver into the slot between the cover and the mounting plate, and rotate the screwdriver.

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Operating RMS Currents (mA)

Sounder Operating RMS Currents (mA)

Volume High Normal

16 VDC – 33 VDC

Coded Tone*

Continuous Tone

151

200

55

77