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SV2 Series Safety Shut-off Valves
172
32-00029—02
External VPS (Valve Proving System) Used;
Electronics configuration BASIC (5) with external pressure switch or STANDARD (6) with
Pressure Module
The SV2 Series valve Pressure Module is used with this scenario with the VPS switch output coming from the SV2 Series
electronics. Wiring between the SV2 Series valve and Honeywell 7800 SERIES, 7800 SERIES and ControLinks and SLATE is
shown in this section.
7800 SERIES
North American Standards (UL, CSA, FM, etc.)
RM78XX
EC7840
DEMAND (VPS) )
INTERLOCKS
PRE-IGNITION
INTERLOCK
VALVE PROVING
SWITCH
MAIN VALVE 1
ILKOUT
MV1
MV2
RECTIFIE
R
V1
V2
ILKIN
INTERNAL
ELECTRONICS
SV2 SERIES VALVE
POC
VPS
N
L1
RUN/LOCKOUT
INTERLOCKS
1
2
MATCH SV2 SERIES VALVE AND FLAME
SAFEGUARD VOLTAGES.
ILK (INTERLOCK) WIRING RUN THROUGH
THE SV2 SERIES VALVE FOR SOLENOID
POWER SAVING FEATURE. APPLICABLE
TO ALL SC2 SERIES VALVE MODELS.
ILK (INTERLOCK) WIRING AS SHOWN
KEEPS VALVE SOLENOIDS ENERGIZED IF
VPS IS PERFORMED AFTER, BOTH OR SPLIT
RELATIVE TO THE CALL FOR HEAT DEMAND.
VPS CONTACT OUTPUT FROM SV2 SERIES
VALVE ONLY APPLICABLE WHEN THE SV2
SERIES PRESSURE MODULE IS USED FOR
EXTERNALLY-INITIATED VALVE PROVING
SEQUENCE BY BURNER MANAGEMENT OR
OTHER CONTROL. THIS FEATURE MUST BE
ENABLED AND PROGRAMMED VIA THE HMI OR
PC TOOLS WHEN COMMISSIONING THE VALVE.
WHEN THE SV2 SERIES VALVE PRESSURE
MODULE IS ENABLED, PROGRAMMED AND
USED FOR LOW GAS PRESSURE AND HIGH
GAS PRESSURE LIMITS, THE LIMITS ARE
INCLUDED IN THE INTERNAL ILK (INTERLOCK)
VALVE STRING. BASIC (5) ELECTRONICS
VALVES DO NOT HAVE THE ABILITY TO
INTERFACE WITH THE SV2 SERIES VALVE
PRESSURE MODULE OR VPS FUNCTIONALITY.
AN EXTERNAL PRESSURE SWITCH MUST BE
USED WITH THESE VALVE MODELS.
OBSERVE FLAME SAFEGUARD WIRING PER
ITS MANUAL.
FOR RM7838 CONTROLS, WIRE THE SV2
SERIES VALVE ILK (INTERLOCK) AHEAD OF
THE LOCKOUT INTERLOCKS AND
COMBUSTION AIR BLOWER SWITCHES.
FOR RM7890/EC7890 CONTROLS, WIRE THE
SV2 SERIES VALVE ILK (INTERLOCK) IN
SERIES WITH THE LIMITS AND CONTROLLER
AS THESE MODELS DO NOT HAVE AN
AIRFLOW SWITCH.
INDICATES FEEDBACK SENSING OF RELAY
CONTACT STATUS AND LINE VOLTAGE
3
2
3
4
4
7
5
5
7
L1
N
GROUND
CONTROL
LIMITS
MAIN VALVE 2
6
1
4
8
8
7
8
6
1
L1
L1
M35591B
RECTIFIE
R
9
POC (PROOF OF CLOSURE) MUST BE
FACTORY INSTALLED, INTERNALLY WIRED
AND CALIBRATED.
7800 SERIES
9
5
Fig. 154: 7800 SERIES with BASIC or STANDARD Electronics, External VPS Used.