IBC Technologies Inc.
40
VFC 15-150 and VFC 45-225
4.2 COMPONENT
DESCRIPTION
A diagram of components and their
placement can be found at the end of this
manual.
To obtain service parts, contact your
installer, telephone IBC Technologies or
visit our website at
www.ibcboiler.com.
The following list provides a summary
description of major components:
Fan/Blower
Part#/Type:
#
04AC-RG130
(VFC 15-
150) or #
04B-RG148
(VFC 45-225)
Function:
Moves combustion air and flue
gas products through the boiler and
venting.
Installation:
Fan removal is done at the
flange (use a
5
/
32
nds
hex key; for the lower /
back fastener, clearance is limited so start
with hex, then complete with needle-nose
pliers or fingers) and the gas valve (3 x
M4 x 30mm Phillips head self tapping
screws accessible for the underside of the
gas valve; for improved access – remove
vinyl air reference tubes and black air
pressure sensor.
Note:
Commencing May 2006, VFC 15-
150 boilers are supplied with the #04AC-
RG130ac fan. This version does not utilize
the 24 V
D
C
power supply as provided on
earlier production, which used the #04A-
RG130 fan. Wiring harnesses also differ.
IBC maintains service inventories for both
models. Care should be taken to identify
which fan type is needed.
Gas Valve
Type:
12-Dungs
GB-WND 055 D01 S22
Function:
zero governor
gas valve
provides strict gas/air mixture control over
the range — 15 - 150 MBH for VFC 15-
150 or 45 – 225 MBH for VFC 45-225.
Installation:
see Section 3.2 Gas Valve
Adjustment.
Direct Spark Ignition Module
Type: 16-Fenwal
35-60-5505-111
Function:
microprocessor based spark
generator and flame proving control with
15 sec. pre-purge; 3 try before an auto re-
setting 1 hour lockout.
Installation:
see diagram at the end of
the manual for correct position. Use
Fenwal #05-129608-624 suppression cable
as the ignition lead.
Differential Pressure Sensor
Type: #
Air Prove Switch
(17-H401
)
Function:
precise measurement of
combustion airflow for operating control
Installation
: see Figure 12 (item 13) for
correct plumbing of air reference lines
Water Pressure Sensor
Type: #
Water Pressure
(
63-H505
)
Function:
water pressure and flow
sensing.
Installation
: see view p.55.
High Limit
Part#/Type: #
(
11-HL200)
High Limit /
Therm-O-Disc 37T_21, calibrated for
200°F, 15°F differential. Alternates:
CT200, calibrated for 95°C (201°F),
EC-0200, calibrated for 200°F (93°C).
Function:
Shuts boiler off when water
temperature exceeds safety limit.
Installation:
Mount with Honeywell
Tradeline
#107408 Heat Conductive
Compound between the base of the hi-
limit switch and the mounting surface.