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INSTALLATION AND OPERATION INSTRUCTIONS

4-4

VFC 15-150 - VFC 45-225 MODULATING GAS BOILERS

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: RG130 – IBC # 240-040 (VFC 15-150)

RG137 – IBC # 240-048 (VFC 45-225)

FUNCTION: Movescombustionairanduegasproductsthroughtheboiler

and venting.

INSTALLATION: Fanremovalisdoneattheange(4x#10-32x7/8”hexhead)

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.

4.2.2 Gas Valve

TYPE: IBC # 180-022

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 3.3 - Commissioning, for gas valve adjustments

4.2.3 Direct Spark Ignition Module

TYPE: Fenwal 240-004B (alternate Capable Controls 240-049)

FUNCTION:microprocessorbasedsparkgeneratorandameprovingcontrol

with 15 sec. pre-purge; 3 try before an auto re-setting 1 hour lockout.

INSTALLATION: (see Diagram 6.1-1 for correct position). Use IBC # 180-011

suppression cable as the ignition lead.

4.2.4 Differential Pressure Sensor

TYPE: Air Prove Switch (IBC # 240-003)

FUNCTION:precisemeasurementofcombustionairowforoperatingcontrol.

INSTALLATION: (see Figure 31 for correct connection of air reference lines).

4.2

Fan/Blowers: 15-150(L), 45-225(R)

Air pressure sensor removal

showing reference line connections

IBC VFC 15-150 Manual

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