IBC Technologies VFC 160 Installation And Operating Instructions Manual - page 20
IBC Technologies Inc.
- 20 -
VFC 160
Check water pressure and temperature.
There should be no noticeable change if
boiler is functioning normally. Check for
any noise in the system.
Check water piping for damage or leaks
and repair as needed.
Freeze Protection
Use only antifreeze made specifically for
hydronic systems. Inhibited propylene
glycol is recommended. Antifreeze
volume must not exceed 50% of the total
volume of water in the system.
WARNING: Do not use Ethylene
Glycol, automotive-type
antifreeze, or undiluted
antifreeze. This may result in
severe boiler damage.
Verify proper operation after servicing.
3.3 COMPONENT DESCRIPTION
A diagram of components and their
placement can be found at the end of this
manual.
For a list of supplier for all components,
contact IBC Technologies or visit our
website at www.ibcboiler.com.
The following list provides a summary
description of major components:
3.3.1 Pressure Switch
Part#/Type: #VFCF-P011-NO4 /
Honeywell C6065D Differential Pressure
Switch, calibrated to 0.88” (Alt: Micro
Pneumatics 9300-0.88)
Function: used to confirm adequate flow
of combustion air; shuts boiler off when
intake air pressure differential drops below
0.9” at measurement point -
Installation: see diagram at the end of
the manual for correct installation.
3.3.2 Flow Switch
Part#/Type: #VFCX-P002 / ½" NPT
paddle type brass/spst reed switch
Function: for confirmation of adequate
circulating water flow; shuts boiler off
when flowrate drops below US 4.0 gpm
Installation: Ensure that arrow points
towards the pressure vessel; shift bar to
“NO” position.
3.3.3 Operator
Part#/Type: #VFCF-P010-150 or -120 /
High range (red face): calibrated for 150°F
centerpoint, 20°F differential; low range
(black face): 120°F centerpoint, 20°F diff.
Function: Switch closes/opens to
enable/prevent boiler operation to provide
desired water temperature range.
Installation: Mount with Honeywell
Tradeline #107408 Heat Conductive
Compound between the base of the
operator and the surface of the tee. Set to
desired operating temperature - see
Section 3.5 - Set Operator Limit above.
3.3.4 Hi-Limit
Part#/Type: #VFCX-HL200 / Therm-O-
Disc 37T_21, calibrated for 200°F, 15°F
differential.
Function: Shuts boiler off when water
temperature exceeds safety limit. Two hi-
limits are available depending on the
desired maximum.
Installation: Mount with Honeywell
Tradeline #107408 Heat Conductive