Initial Start-Up - Viessmann Vitorond 100 VR1 Series Installation And Service Instructions Manual

Vitorond 100, VR1-22 to -33 Installation and Service

Initial Start-up

Initial Start-up
WARNING
Verify completeness of all discussion points on the
following pages before starting-up the system.
Refer to the Burner Instructions
1. Ensure fresh air intake of boiler room is open and that
chimney and all flue pipes are connected, sealed and
unobstructed inside.
2. Ensure proper size and operation of expansion tank.
Undersized expansion tanks cause fresh water to be
added to the system through fill valve. This will cause
premature section failure, which is not covered by
warranties.
Note: If the nitrogen pressure of the precharged
expansion tank is less than the static pressure
of the system, inflate membrane pressure to
slightly exceed pressure of system.
The static pressure required at the tank is
based upon the static height of the system.
Normal fill pressure for most residential
applications is 12 to 15 psig when the system
is cold. A lower pressure gage reading usually
indicates loss of water due to leakage. All leaks
must be corrected.
Refer to instructions packaged with automatic
fill valve. Follow local regulations with respect
to backflow preventers.
3. Fill heating system with water and bleed out air
completely. Ensure complete system is properly
vented of air.
Note: Water treatment should be considered in areas
where it is known that boiler feed water
contains a high mineral content and hardness.
Contact local water treatment company.
In areas where freezing might occur, an
antifreeze may be added to the system water
to protect the system. Please adhere to the
specifications given by the antifreeze
manufacturer. Do not use automotive silicate-
based antifreeze. Ensure a copy of the Material
Safety Data Sheet is left on site.
Please observe that an antifreeze/water
mixture may require a backflow preventer
within the automatic water feed and influence
components such as diaphragm expansion
tanks, radiation, etc. A 40% antifreeze content
will provide freeze-up protection to -10°F
(-23°C).
Do not use antifreeze other than specifically
made for hot water heating systems. System
also may contain components which might be
negatively affected by antifreeze. Check total
system frequently when filled with antifreeze.
Follow anti-freeze manufacturer's instructions.
4. Perform a pressure test of the boiler and the water
piping. Pressure test must not exceed 1½ times the
maximum operating pressure (45 psi) of the boiler.
Pressure relief valve must be removed during pressure
test. Any leaks must be corrected.
the max. operating pressure is 45 psig (310 kPa)
g
the max. testing pressure is 68 psig (465 kPa)
g
5. Ensure proper and adequate fuel supply exists;
open oil shut-off valve.
Start-up
45