Component Description - IBC VFC 15-150 Installation And Operating Instructions Manual

Air pressure sensor removal
showing reference line connections
4-4
VFC 15-150, VFC 45-225 MODULATING GAS BOILERS
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:
4.2.1 Fan/Blower
PART#/TYPE:
FUNCTION: Moves combustion air and flue gas products through the boiler
and venting.
INSTALLATION:
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 – mark and remove vinyl
air reference tubes and black air pressure sensor.
4.2.2 Gas Valve
TYPE: IBC # 180-022
zero governor gas valve provides strict gas/air mixture control over
FUNCTION:
the range — 15 - 150 MBH for VFC 15-150 or 45 – 225 MBH for VFC 45-225.
INSTALLATION:
4.2.3 Direct Spark Ignition Module
TYPE: Fenwal 240-004C
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:
suppression cable as the ignition lead.
4.2.4 Differential Pressure Sensor
TYPE: Air Prove Switch (IBC # 240-003)
precise measurement of combustion airflow for operating control.
FUNCTION:
INSTALLATION:
RG130 – IBC # 240-040 (VFC 15-150)
RG137 – IBC # 240-048 (VFC 45-225)
Fan removal is done at the flange (4 x #10-32 x 7/8" hex head)
see Section 3.3 - Commissioning, for gas valve adjustments
(see Diagram 6.1-1 for correct position). Use IBC # 180-011
(see Figure 32 for correct connection of air reference lines).
INSTALLATION AND OPERATION INSTRUCTIONS