Freestyle 2 Series Manual page 77

FreeStyle
®
2
series
32 Startup
(continued)
X100 inhibitor is required
1. It is required that the boiler have Sentinel X100 inhibi-
tor added to the system to prevent damage to the boilers'
heat exchanger. Failure to comply may result in acceler-
ated corrosion of the heat exchanger and system components.
See Replacement Parts section starting on page 120 for order-
ing information.
2. After filling the system as directed in this manual, and the air
purge has been completed, release the system water pressure to
0 psi. Drain a small amount of water out of a convenient boiler
drain to insure the system water pressure is at 0 psi. Use a (field
supplied-if needed) Dishwasher elbow / hose 3/4 to 3/8 com-
pression adapter (See Figure 102 below) to the white Sentinel
hose, and screw it to the tube of Sentinel X100. Insert it into
your caulk gun, and fit the washing machine hose adapter to a
boiler drain connection. Open the drain, and inject the complete
tube of X100 to the system. Close the drain valve, and remove
the injection fitting.
Figure 102 Hardware fittings to add Sentinel to boiler
3. Fill system water to required pressure, and start a heating zone
to circulate system water. Allow time for the water to circulate
and mix. Then check the inhibitor level with test kit. Add ad-
ditional inhibitor if necessary.
Check/verify water chemistry
1. The system may have residual substances that could affect water
chemistry.
2. After the system has been filled and leak tested, verify water pH
and chloride concentrations are acceptable.
3. Verify antifreeze concentration, if used.
4. Follow the instructions on the Sentinel test kit to sample the
system water and verify inhibitor concentration.
Part number 550-142-950/0122
-
wall mount gas fired water boiler
–
boiler manual
Check inhibitor concentration
annually
1. Test the pH of a sample of system water at least annu-
ally. The pH of the water mixture must be between 7.0
and 8.5. (Or use the Sentinel inhibitor test kit to check
concentration.)
2. If pH is outside this range (or inhibitor test kit indicates
low level), the inhibitor level may not be sufficient to
prevent corrosion.
3. Test antifreeze concentration.
Test antifreeze concentration at least annually.
If concentration is low, add antifreeze or drain
system and refill with correct mixture.
4. Follow instructions on antifreeze container to determine
the amount of antifreeze needed.
by volume concentration of antifreeze.
Check inhibitor level after adjustments are made.
Check thermostat circuits
1. Disconnect wires connected to the
thermostat terminals (see Field wiring, beginning on
page 52 for low voltage terminal locations and applica-
tion information). Mark the wires before removing to
avoid wiring errors when re-connecting them.
2. Connect a voltmeter across each pair of incoming wires.
Close each thermostat, zone valve and relay in the exter-
nal circuits one at a time and check the voltmeter reading
across the incoming wires.
3. There should NEVER be a voltage reading.
4. If a voltage does occur under any condition, check and
correct the external wiring.
DO NOT connect the
stat terminals to 3-wire zone valves
could cause control damage.
5. Once the external thermostat circuit wiring is checked
and corrected if necessary, reconnect the external ther-
mostat circuit wires.
DO NOT exceed 50%
DHW and HEAT
FreeStyle
® thermo-
. This
77