LAARS Mini-Therm II JVT (Sizes 50-225) - Install and Operating Manual - Manual (Page 19)

Mini-Therm II Hydronic Boiler Page 19
SP
ARK
MV
MV/PV
PV
GND
24V (GR)
24V
TH-W
MV
SPARK 1
2
3
4
5
6
7
8
9
W W
B B
R R
LO HI
MV
C
PV
HI
Pilot Burner With
Spark Electrode
Sensor
Remote Flame Sensor
High Altitude
(Optional)
Two-Stage
Aquastat
Two-Stage
Gas Valve
HW VR8304
Switch
Safety
Roll-Out Blocked
Vent
Safety
Switch
Space Heating
Pump
(Field Supplied)
Receptacle
Damper
Vent
Receptacle
Venter
Power
Jumper
R W R
A
Zone
Pump
Relay
Zone
Pump
Relay Field
Thermostat
Supplied
Limit
High Optional
Aquastat
Terminal Terminal
Boiler Boiler
Terminal
Boiler
Fuse
115V
24V
3
Relay
Pump
Zone
110V
Hot
110V
Neutral
1
4
6
Zone
Pump
Relay
Ignition Control
Figure 9e. Wiring Diagram, Spark Ignition, Two-Stage (JVS 100-225).
BK-BLACK
W-WHITE
R-RED
Y-YELLOW
BL-BLUE
BR-BROWN
O-ORANGE
P-PURPLE
SPARK IGNITION WIRE
115V-FACTORY WIRED
115V-FIELD WIRED
24V-FACTORY WIRED
24V-FIELD WIRED
G-GREEN
IF ANY OF THE ORIGINAL
WIRE (AS SUPPLIED WITH
THE APPLIANCE) MUST
BE REPLACED, IT MUST
BE REPLACED WITH
APPLIANCE WIRING
MATERIAL SUITABLE
FOR 105 DEGREES C
OR ITS EQUIVALENT.
1
2
3
4
5
6
THE BOILER WILL NOT OPERATE WITHOUT THE
AUTOMATIC VENT DAMPER. THE VENT DAMPER WIRE
HARNESS MUST BE INSERTED INTO THE VENT
DAMPER RECEPTACLE.
: SOME UNITS ARE SUPPLIED WITH VENT
DAMPER JUMPER PLUG. DO NOT REMOVE JUMPER
UNLESS VENT DAMPER IS TO BE INSTALLED.
IN CANADA
R
W
A
O
RECEPTACLE
VENT DAMPER
Y
P
R
R
P
BL
R
115V 24V
GROUNDING
CONDUCTOR
115/60HZ
POWER SUPPLY
PUMP
RELAY
TRANSFORMER
HOT
NEUTRAL
W
BK
BK
PUMP
(FIELD
SUPPLIED)
ZONE
Y Y
R
G
BR
HEATING
SPACE
TWO-STAGE
GAS VALVE
HW VR8304
BR
O
TERMINAL
STRIP
WALL
THERMOSTAT
(FIELD
SUPPLIED)
Y
AQUASTAT
(OPTIONAL) LIMIT
HIGH
R R
BK
POWER VENTER
RECEPTACLE
SEE DOC. 1077
JUMPER
Y
BLOCKED
VENT
SAFETY
SWITCH
ROLL-OUT
SWITCH
BK
BL
SP
ARK
IGNITION
CONTROL
PILOT
BURNER
WITH
SPARK
ELECTRODE
SENSOR
H0267300-
MODEL JVS
100-225
MV
MV/PV
PV
GND
24V (GR)
24V
TH-W
MV
SPARK 1
2
3
4
5
6
7
8
9
REMOTE FLAME SENSOR
HIGH ALTITUDE
(OPTIONAL)
W W
B B
R R
LO HI
MV
C
PV
HI
BK
Y
Y
BR
TWO-STAGE
AQUASTAT
Y
Figure 9f. Schematic, Two-Stage (JVS 100-225).