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:
