INSTRUCTION REF: IN176
ISSUE No. 1
DATE 2.01.08
Page 43 of 59
TELEPHONE:
SERVICE (44) 01332 875665
FAX:
SERVICE (44) 01332 875536
Parry Group Limited,
Town End Road, Draycott, Derby, England DE72 3PT
www.parry.co.uk
Gas Interlock
The gas interlock is a safety system that links the ventilation system and the gas
solenoid valve. The gas solenoid valve will remain shut and stop gas flowing to
gas appliances if the ventilation fans are not operating, or if the air flow is below a
minimum level. The solenoid valve will also shut if the system senses a gas leak
anywhere along the pipe work or gas appliance. The system checks this by
monitoring the pressure in the pipe work over a 60second period. Low pressure
indicates a leak and the interlock system cuts the gas supply.
Parry are now offering canopies sold complete with gas interlock systems. For
use with canopies with internal centrifugal fans.
The diagram below
shows the items that
are included as part of
the Gas interlock
system.
