21
WIRING DIAGRAM
Note:
For proper operation of appliance, the
wires from the switch, electronic module,
and valve must be attached exactly as shown:
MAIN BURNER
V
C
S
-E
C
O
M
O
D
O
D
S
V
C
S
-E
C
O
M
O
D
MAIN VALVE
BATTERY
PACK
PILOT
FROM “I” TERMINAL
ON MAIN MODULE
TO “S” TERMINAL
ON MAIN MODULE
ON/OFF
(BROWN)
HI/LO
(BLUE)
IPI/CONT PILOT
(YELLOW)
LEARN
(BLACK)
“ - ”
“ + ”
FROM PILOT
THERMOCOUPLE
TO PILOT
IGNITOR
VARIABLE MAIN OUT
MIAN VALVE
STEP MOTOR
INLET
MAIN VALVE
SAFETY
OPERATER
PILOT
OUT
B
AT
T
PO
WE
R
SW
IT
CH
ES
V
S
I
M
O
TO
R
C
O
M
M
Figure 24 - Wiring Diagram
SPECIFICATIONS
Burner System
(see label on back)
(S,B)VFA18NG
Gas Type
Input Max.
Input Min.
Manifold Pressure
Inlet Pressure Max.
Inlet Pressure Min.*
Minimum Firebox Size
Natural Gas
Natural Gas
Propane/LP
Propane/LP
34,000 BTU/Hr 34,000 BTU/Hr 39,000 BTU/Hr 39,000 BTU/Hr
22,000 BTU/Hr 22,000 BTU/Hr 22,000 BTU/Hr 22,500 BTU/Hr
3.5” W.C.
3.5” W.C.
10.0” W.C.
10.0” W.C.
10.5” W.C.
10.5” W.C.
7.0” W.C.
7.0” W.C.
11.0” W.C.
11.0” W.C.
14.0” W.C.
14.0” W.C.
18” H X 22” W X 12” D
18” H X 28” W X 15” D
(S,B)VFA18LP (S,B)VFA24NG (S,B)VFA24LP
ATTENTION!
The following listed items are possible warning codes from your burner system:
One beep per second
Ignition Safety (Protection for Ignition system)
Recycle Safety: (Protection for Unstable Pilot)
Description of Fault - Pilot is not successfully ignited
within the trial period.
Action - The control will operate the gas valve to the
“OFF” position.
How to Clear - Cycle “ON/OFF” switch to “OFF”
position
Two beeps per second
Automatic Recycle
Description of Fault - Pilot is proven and lost 3-times
within 2-minutes without multiple “ON/OFF”
commands.
• Automatic Recycle (VCS-ECOMODODS) - Pilot is
established, then lost.
• Manual Recycle – Ignition sequence is initiated
6-times within 2-minutes.
Action - The control will operate the gas valve to the
OFF position
How to Clear - After 5-minutes has elapsed (5-minute
internal timer expires), the module must see the
mode/switch in the “OFF” position after that time.
Once the module see’s the mode/switch in the “OFF”
position after the 5-minutes has elapsed, it will stop
beeping.
• Once the beeping has stopped, it will accept normal
operation including another “ON” command from the
user.
4 beeps per second (constant beeping)
Sensor Safety (Protection for Flame sensor)
Description of Fault - Pilot flame sensor temperature
is too high when ignition sequence
is initiated.(unit has not cooled down before re-starting).
Action - The control will operate the gas valve to the
“OFF” position.
How to Clear - Cycle the ON/OFF switch to the “OFF”
position.
ATTENTION!
The following listed items are possible warning codes
4 beeps every two
-
seconds
Thermal Safety (Overheat Protection)
Description of Fault - Internal temperature has exceeded
170 deg. F.
Action - The module will operate the gas valve to the
“OFF” position.
How to Clear – The module’s internal temperature must
cool to below 160 deg. F and cycle the “ON/OFF” switch
to the “OFF” position.
