Flamefast VENTGUARD+ Guide

VG_OM_0223
FLAMEFAST RESERVE THE RIGHT TO CHANGE PRODUCT SPECIFICATION WITHOUT PRIOR NOTICE www.flamefast-gas-safety.co.uk
INSTALLATION & OPERATION
VENTGUARD+
TECHNICAL SPECIFICATION
Power Supply 100 –240V AC 50/60Hz
Power Consumption 3W Max (excluding Valve)
Fan Current Rating 0.1 –20.0A @ 230V AC
Power Output Gas Solenoid –Switched Mains
VFC Output SPST –5A @ 230V Max
Operating Conditions Temp 0 - 50°C
Humidity 0 - 95% (NC)
Material PC
Colour Grey (RAL7035)
IP Rating IP65
Approval CE, UKCA
DIMENSION
Height - 180mm Width - 130mm Depth –60mm / 65mm inc. Key & Stop
IMPORTANT –Please read carefully:
1. This product mustbe installed by a competent/qualified person in accordance
with all relevant regulations and legislations.
2. This product must be mounted flush to the wall (or similar) using secure
fixings to prevent access to the rear.
3. Be sure to isolate the mains supply before removing the unit fascia.
4. If there is any question over the application, please contact to discuss.
5. This product must be connected to an accessible 5A fused spur.
6. If this equipment is used in a manner not specified by the manufacturer,
protection provided may be impaired.
7. This product is designed for indoor use with standard atmospheric conditions.
8. To comply with the relevant legislation, commercial kitchen interlock must be
fitted with a CO2 Monitor
The information contained within this guide is to cover typical installations,
however allowances must be made for the site-specific requirements. If in doubt
always contact Flamefast for further guidance.
PANEL MOUNTING
The control panel should be mounted at a readily accessible height (typically 1.2
–1.6m from the finished floor level) ensuring that the panel mounted Emergency
Stop Button is easily accessible. The panel should ideally be located next to the
exit with any additional exits covered by remote stop buttons.
For securing the panel to the wall there are four mounting holes, one in each
corner; these should be used to ensure that the IP rating of the unit is not
compromised.
ELECTRICAL CONNECTIONS
All electrical connections are to be made as indicated on the wiring diagram
(overleaf) and the maximum cable size should not be exceeded.
Any alarm (volt free) inputs must be wired using a dedicated volt free contact and
where more than one device is used these MUST be wired in SERIES.
VOLT FREE INPUTS
There are dedicated inputs for:
-Remote Emergency Stop buttons (Flamefast RSTOP-C)
-CO2 Monitors (Flamefast CO2M)
-Intake Fan Air Differential Pressure Switch (Flamefast AIRDPS)
-Extract Fan Air Differential Pressure Switch (Flamefast AIRDPS)
When not use, these should be linked out, otherwise the panel will raise an alarm.
FAN CURRENT MONITORING
There are two integral current monitors to provide a BS 6173 and IGEM/UP/19
compliant ventilation interlock. These work by monitoring the fan power
absorption, and assuming that the current consumption is proportionate to the
fan/air speed, alarm thresholds can be set to isolate the gas supply if the fan
current is deemed outside of the acceptable range.
QUICK SETUP GUIDE
The below guide provides details on how to setup the current monitoring.
Prior to power-up of the panel:
1. Use the configuration jumpers to select which functions are to be used by
moving the jumper between ON and OFF:
a. EXTRACT –to enable/disable the Extract fan current monitoring interface
b. INTAKE –to enable/disable the Intake fan current monitoring interface.
NOTE: If the current monitoring is not being used, move the Intake and Extract
jumpers to the OFF position.
c. OVERCURRENT –to enable/disable the Overcurrent function (isolates
the gas supply if a high current threshold is detected –such as from a
motor failure).
2. Move the SENSITIVITY jumper to the desired percentage. This will select the
acceptable tolerance before an alarm condition. As an example, if the
Undercurrent is set to 4A, the Overcurrent set to 10A, and the sensitivity set
to 10%, the VentGuard will alarm at 3.6A (10% below 4A) for Undercurrent,
and 11A (10% above 10A) for the Overcurrent. This allows for fluctuations in
current draw and some tolerance for other affecting factors such as filter
deterioration.
3. To allow the over and undercurrent to then be set, move the SETUP jumper
to the ON position to enable the commissioning buttons.
You are now in position to power up the system. Then once powered:
1. Set the fans running to what is deemed the minimum acceptable running
speed, and leave for at least 1 minute to allow the fans to stabilise.
2. Once settled, Press the UNDERCURRENT button, at which point the LEDs on
the PCB will flash Green ten times.
3. Then set the fans running to what is deemed the maximum acceptable
running speed, and leave running for at least 1 minute to allow the fans to
stabilise.
4. Once settled, press the OVERCURRENT button, at which point the LEDs on
the PCB will flash Green ten times.
Once complete, move the SETUP jumper back to the OFF position. Whilst the
setup jumper is in the on position the unit will not enter normal operating mode.
CURRENT MONITOR INDICATION
The PCB mounted LEDs will provide an indication of the current state:
Green
Current between setpoints
Amber
Undercurrent Alarm
Red
Overcurrent Alarm
Flashing Amber
Undercurrent not set
Flashing Red
Overcurrent not set
Off
Channel disabled
TROUBLESHOOTING
The LEDs on the front of the panel provide details of any alarm conditions:
LED
BEHAVIOUR
AUDIBLE
DESCRIPTION
Power
Flashing Slowly
Previous Power Loss
Power
Flashing Quickly
SETUP Jumper fitted
Extract Fan Fail
Solid Red
Constant
Extract DP Fault or Undercurrent
Extract Fan Fail
Flashing Red
Beep
Overcurrent
Intake Fan Fail
Solid Red
Constant
Intake DP Fault or Undercurrent
Intake Fan Fail
Flashing Red
Beep
Overcurrent
Emergency Stop
Solid Red
Constant
Remote Stop Button Pressed
Emergency Stop
Flashing Red
Beep
Panel Stop Button Pressed
CO2 Monitor
Solid Red
Constant
High CO2 Levels
If you are not getting Power out to the Gas Solenoid, but the Gas ON light is Green,
please check the PCB mounted fuse for continuity.
If any of the inputs are showing alarm, link them out to prove the functionality of
the panel. If the panel then shows at healthy, investigate the item connected.
DO NOT LEAVE LINKED OUT.

VG_OM_0223
FLAMEFAST RESERVE THE RIGHT TO CHANGE PRODUCT SPECIFICATION WITHOUT PRIOR NOTICE www.flamefast-gas-safety.co.uk
CONNECTION & CONFIG
VENTGUARD+
Volt
Free
Contact
EXTRACT
FAN DP R STOP CO2M
IN OUT IN OUT
MAINS IN
E N L
GAS VALVE
L N E
NC C NO
STATUS / BMS
INTAKE FAN
LIVE EXTRACT FAN LIVE
INTAKE
FAN DP
5A
FUSE
Gas Valve
Output
20
300
100
200
Pa
1
23
20
300
100
200
Pa
1
23
VFC
GAS
SOLENOID
VALVE
AIR DP SWITCH AIR DP SWITCH
L N
MUST be set to
Programme 3 or 4
5 Amp
Fused Spur
CO2M
When utilising Fan Current Monitor instead of
Air DP Switches the Intake and Extract
Terminals MUST be Linked Out
KEY SWITCH
EMERGENCY STOP
BUTTON
230V
Mains
Supply
MAX ACT MIN
EXT INT
5%
10%
15%
20%
25%
5%
SET UP
EXTRACT
INTAKE
OVERCURRENT
ON OFF
SET OVERCURRENT SET UNDERCURRENT
FUNCTION
VOLT OUT
CHANNEL SELECT
0V
ON OFF
EXTRACTINTAKE
SENSITIVITY
Measuring Volts DC between '0V' and 'VOLT OUT' this allows you to measure the
running and alarm currents, depending on the Channel and Function selected.
Channel Select Function
INT = Intake
EXT = Extract MAX = Overcurrent Setpoint ACT = Actual Running Current
MIN = Undercurrent Setpoint
The Output then provides a linear Voltage relative to the level; 1V = 0A / 3v = 20A
NC
Volt Free Contact
1 NC 4
NC
Volt Free Contact
1 NC 4
ButtonsMultiple Stop
MUST be wired in series.
When not using Fan Current Monitor both Extract
and Intake channels MUST be disabled. Refer to
Quick Setup Guide for further information.