Honeywell SV2 Series User Manual page 21

VALVE INTERFACE
FUEL AIR RATIO
MODULE
FUEL AIR RATIO MODULE
ELECTRICAL CORD
FUEL CONTROL
VALVE HOUSING
NEMA 1/IP20
ELECTRICAL
ENCLOSURE
WIRING PORTS
FLANGES, NPT OR BSP
(ORDERED SEPARATELY)
FUEL CONTROL
VALVE ELECTRICAL
CORD
Fig. 13: Valve features.
Power Saving Feature
A power saving feature implemented into the SV2 Series valves allows the usage of physically smaller solenoids with less heat
generation while saving electrical energy. Run current is reduced via duty-cycling of the voltage applied across the solenoids.
The power saving circuitry is designed as Class C fail-safe to avoid full power application and thus over-heating of the solenoids
per EN13611 / 6.6.4 class C to fulfill the requirements in EN161 / 8.11.120.4.1.
Valve Interface
The valve interface contains 8 back lit LEDs, which are used to indicate the following conditions; valve seat open / closed or
powered / not powered status, the presence of a general fault condition, low gas pressure or high gas pressure fault condition or
if a self-test is in process.
The valve seat Open / Closed LEDs indicate the status of the valve seat over which they are situated
The valve interface also has a push Reset button, which is used to reset the valve in the event it is in lockout status, to verify
safety parameters after setup and to reverse the Open / Closed LEDs when the valve electronics orientation is changed in the
field (refer to Note 1 below).
SV2 Series Safety Shut-off Valves
V2F, V2V
SV2 SERIES SAFETY SHUT-OFF VALVES USER MANUAL
ELECTRICAL ENCLOSURE
FASTENER TABS
FLANGE PRESSURE TOP
[1/8 IN (3 MM) NPT OR BSP]
PRESSURE MODULE
(OPTIONAL)
PRESSURE MODULE
ELECTRICAL CORD
FIELD WIRING EXIT +
CABLE TIE ATTACHMENT
SOLENOID COVER
ELECTRICAL ENCLOSURE
MOUNTING LOCATION
(BOTH SIDES)
GAS FLOW DIRECTION
INDICATOR (BOTH SIDES)
PRESSURE PORT COVERS
NOVV CONNECTION (NORMALLY
OPEN VENT VALVE) (BOTH SIDES)
21
MCR37138
MCR37139
.
1