Weil-McLain Gold CGi Series 2 User Manual page 33

Boiler Manual
Fill the system with water
1. Close manual and automatic
drain cock.
2.
Fill to correct system pressure.
will vary with each application. Typical cold water
fill pressure for a residential system is 12 psi.
3. from system:
Purge air
a. Connect a hose to the purge valve (see drain
valves, item 6 , in suggested piping diagrams
on pages 21 through 27,
). Route hose to an area where water
Figure 23
can drain and be seen.
b. Close the boiler or system isolation valve
between the purge valve and fill connection to
the system.
c. Close zone isolation valves.
d. Open quick-fill valve on cold water makeup
line.
e. Open purge valve.
f. One zone at a time, open the isolation valves.
Allow water to run through the zone, pushing
out the air. Run until no noticeable air flow is
present. Close the zone isolation valves and
proceed with the next zone. Follow this
Inspect system water piping
After filling the boiler and system with water,
immediately. Repeat this inspection after the boiler has been started and the system has heated up.
Leaks must be repaired at once.
property damage.
Do not use
to boiler will occur, resulting in substantial property damage.
Inspect base insulation
Check to make sure
insulation is secure
operate boiler. Replace or reposition insulation.
do not
Failure to replace
causing severe personal injury, death or substantial property damage.
The boiler contains ceramic fiber and fiberglass materials. Use care when handling these
materials per instructions on
personal injury.
Part Number 550-110-710/0200
and boiler
air vents
Correct pressure
through
Figure 16
4. Open
5. Open other vents:
6. Refill to correct pressure.
inspect all piping
Failure to do so can damage the boiler, resulting in substantial
petroleum-based cleaning or sealing compounds
against all four sides of the base. If insulation is damaged or displaced,
damaged insulation or reposition insulation can result in a fire hazard,
of this manual. Failure to comply could result in severe
page 64
procedure until all zones are purged.
g. Close the quick-fill water valve and purge valve
and remove the hose. Open all isolation valves.
Watch that system pressure rises to correct
cold-fill pressure.
h. After the system has operated for a while,
eliminate any residual air by using the manual
air vents located throughout the system.
i. If purge valves are not installed in system, open
manual air vents in system one at a time,
beginning with lowest floor. Close vent when
water squirts out. Repeat with remaining vents.
automatic air vent
bladder-type expansion tank systems only) one
turn.
a. Starting on the lowest floor, open air vents one
at a time until water squirts out.
b. Repeat with remaining vents.
throughout the system for leaks. If found, repair
in boiler system. Severe damage
(diaphragm-type or
33