Honeywell SV2 Series User Manual page 172

SV2 Series Safety Shut-off Valves
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.)
7800 SERIES
GROUND SV2 SERIES VALVE
N
INTERNAL
ELECTRONICS
L1
V1
N
Fig. 154: 7800 SERIES with BASIC or STANDARD Electronics, External VPS Used.
1
9
POC
4 5
VPS
LIMITS CONTROL
L1
ILKIN
2
5
ILKOUT
RUN/LOCKOUT
INTERLOCKS
MV1
MV2
V2
L1
RM78XX
L1
EC7840
PRE-IGNITION
INTERLOCK
VALVE PROVING
SWITCH
DEMAND (VPS) )
3 4
8
7
INTERLOCKS
MAIN VALVE 1
MAIN VALVE 2
172
1 MATCH SV2 SERIES VALVE AND FLAME
SAFEGUARD VOLTAGES.
2 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
3
KEEPS VALVE SOLENOIDS ENERGIZED IF
VPS IS PERFORMED AFTER, BOTH OR SPLIT
RELATIVE TO THE CALL FOR HEAT DEMAND.
1
4
VPS CONTACT OUTPUT FROM SV2 SERIES
VALVE ONLY APPLICABLE WHEN THE SV2
6
SERIES PRESSURE MODULE IS USED FOR
EXTERNALLY-INITIATED VALVE PROVING
7
SEQUENCE BY BURNER MANAGEMENT OR
OTHER CONTROL. THIS FEATURE MUST BE
8
ENABLED AND PROGRAMMED VIA THE HMI OR
PC TOOLS WHEN COMMISSIONING THE VALVE.
5 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
6
ITS MANUAL.
FOR RM7838 CONTROLS, WIRE THE SV2
7
SERIES VALVE ILK (INTERLOCK) AHEAD OF
THE LOCKOUT INTERLOCKS AND
COMBUSTION AIR BLOWER SWITCHES.
8
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.
9 POC (PROOF OF CLOSURE) MUST BE
FACTORY INSTALLED, INTERNALLY WIRED
AND CALIBRATED.
INDICATES FEEDBACK SENSING OF RELAY
CONTACT STATUS AND LINE VOLTAGE
M35591B
32-00029—02