IBC Technologies VFC 160 Installation And Operating Instructions Manual - page 21
IBC Technologies Inc.
- 21 -
VFC 160
Compound between the base of the
operator and the mounting surface.
3.3.5 Transformer
Part#/Type: #VFCX-P006 /Hammond
DG2G control transformer; Alternate: Rex
CS100AW/X Primary- 120VAC; Sec.- 24
VAC; 100VA
Function: Provides 24 VAC for (1) the
control circuit and (2) AC to DC power
converter, to drive the brushless DC fan
Installation: see wiring & ladder
diagrams.
3.3.6 Gas Valve
Type: White-Rodgers 36E22 (alts:
36E36; 36F22 or 36G22) Fast-Opening
Valve. Alternative: Honeywell VR8205A
Function: regulates and supplies gas for
gas:air mixing; opens/closes on signal
from the ignition control module.
Installation: see Section 2.2 Gas Valve
Adjustment.
3.3.7 Blower
Part#/Type: #VFCX-P005 / RG130/0800
24V DC blower
Function: Moves combustion air and flue
gas products through the boiler and
venting.
Installation: see Section 2.3 Blower
Adjustment.
3.3.8 Ignition Control Module(ICM)
Type: #VFCF-M003 / Honeywell S87J-
1034 Direct Spark Ignition Control
Module.
Function: Boiler ignition, flame proving
and gas valve control.
On a call for heat, the S87J-1034 performs
the following functions:
1. 30 second (approx.) prepurge on a call
for heat
2. opens gas valve
3. provides ignition spark (30,000 V open
circuit, which provides approx 8,000 V
on a formed-arc basis) for a single
trial-for-ignition period of 20 second.
Checks for flame presence; locks out if
no flame by end of ignition trial. See 4
- Troubleshooting, under Lockout.
4. discontinues spark if flame present
5. on loss of flame, a timed trial-for-
ignition is repeated (locks out if trial-
for-ignition period ends before flame
is re-established)
Installation: see wiring diagram.
3.3.9 Igniter Probe/Flame Sensor
Part#/Type: #VFCX-P004 / single probe
of Kanthal A1 and Alumina ceramic.
Function:
Transmits spark from ICM
to burner for ignition, and sends electrical
signal back to ICM for flame proving.
Installation: Set gap between burner and
probe end must be between 3/16 - 1/4”.
3.3.10 DC Power /Enunciator Panel
Ignition Module
Pressure Switch
Operator
Flow Switch
Vent Hi-Limit
Water Hi-Limit
Fan Speed
Fan
Thermostat
24 V
AC
Pump
Set Point
80°F
180°F
H
L
Call for Heat
Power
FXFR
Figure 16. DC Power & Enunciator
Part#/Type: #VFCF-M002 / combination
dc power supply and wiring bus
Function: Provides DC power supply for
fan operation and a PWM electronic signal
for fan speed variation. Also acts as a