Freestyle 2 Series - Startup

Part number 550-142-950/0122
75
FreeStyle
®
series 2 wall mount gas-fired water boiler – boiler manual
32 Startup
Use the correct amount of antifreeze
1. Determine the freezing temperature needed (to protect
against lowest likely temperature the system water will en-
counter).
2. Find the antifreeze concentration by volume needed for this
temperature from the antifreeze manufacturer’s data on the
antifreeze container.
3. Add up the volume (gallons) of all system piping and com-
ponents, including the expansion tank and boiler.
a. Boiler water content is listed in Figure177,page134.
b. Remember to include expansion tank water content.
4. Multiply this volume by the (percent) antifreeze needed to
nd the number of gallons of antifreeze to add.
Fill and test water system
1. Fill system only aer ensuring the water meets the require-
ments of this manual.
2. Close manual and automatic air vents and boiler drain valve.
3. Fill to correct system pressure. Correct pressure will vary
with each application.
a. Typical cold water ll pressure for a residential system
is 12 psi.
Boiler water pressure switch is set for 9 psi (±2)
minimum pressure. A low water pressure will give
“F37” fault code.
b. Pressure will rise when boiler is turned on and system
water temperature increases. Operating pressure must
never exceed 25 PSIG.
4. At initial ll and during boiler startup and testing, check
system thoroughly for any leaks. Repair all leaks before
proceeding further.
CIRCULATOR EXERCISING and
FREEZE PROTECTION
CIRCULATOR EXERCISING
e FreeStyle ® control will automatically start the circulator out-
put and run for 10 seconds for each 72-hour period of inactivity.
FREEZE PROTECTION
is function automatically res the boiler and starts the
HEAT circulator when the heat exchanger sensor detects a
temperature less than 40 °F. e circulator turns o when
the temperature rises above 45 °F.
Clean system to remove sediment
1. You must thoroughly flush the system (without boiler
connected) to remove sediment. e high-eciency heat
exchanger can be damaged by buildup or corrosion due to
sediment.
If the system needs to be cleaned, use only Sentinel
X400 cleaner, available from Williamson-er-
moo. See Figure164,page121 for information.
Follow instructions supplied with the X400 cleaner
and cleaning instructions on page115. For zoned
systems, ush each zone separately through a purge
valve. (If purge valves and isolation valves are not
already installed, install them to properly clean the
system).
2. Flush system until water runs clean and you are sure piping
is free of sediment.
Do not use petroleum-based cleaning or seal-
ing compounds in boiler system. Damage to
elastomer seals and gaskets in system could oc-
cur, resulting in substantial property damage.
Before lling the boiler and system with water,
verify the following. Boiler corrosion can occur.
Failure to comply could result in boiler failure
or unreliable operation.
Water chemistry
Water pH between 7.0 and 8.5
1. Maintain boiler water pH between 7.0 and 8.5. Check with
litmus paper or have chemically analyzed by water treatment
company.
2. If pH diers from above, consult local water treatment com-
pany for treatment needed.
Hardness less than 7 grains
Consult local water treatment companies for unusually hard water
areas (above 7 grains hardness).
Chloride concentration must be
LESS THAN 50 ppm
1. Filling with chlorinated fresh water should be acceptable
since drinking water chloride levels are typically less than
5 ppm.
2. Do not use the boiler to directly heat swimming pool or
spa water.
3. Do not ll boiler or operate with water containing chloride
in excess of 50ppm.
Verify that the water chemistry meets the limita-
tions and requirements of all other equipment
in the system.
Antifreeze
1. Use only antifreeze listed by Williamson-Thermoflo
as suitable for use with FreeStyle® Gas Boilers. See
Figure164,page121 for information.
2. See the Replacement parts section starting on page120 for
Williamson-ermoo part numbers to obtain antifreeze
through a Williamson-ermoo distributor.