Weil-McLain CGI-4E Boiler User Manual


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CGi-4E Gas-Fired Water Boiler — Boiler Manual
12
Part Number 550-110-711/1108
Prepare boiler — placement & setup2a
Table 2 Manifold orifice sizing at sea level and altitudes to 4,500 feet
Location Natural gas Propane gas
U. S.
0-2,000 ft over 2,000 ft 0-2,000 ft over 2,000 ft
2.55 mm (Note 1) 1.60 mm (Note 1)
Canada
0-2,000 ft 2,000-4,500 0-2,000 ft 2,000-4,500
2.55 mm #41 1.60 mm 1.45 mm
Note 1:
For elevations above 2,000 feet, contact your local Weil-McLain sales office for details.
Place boiler/crate near
position
1. Leave boiler in crate and on pallet until installation site
is ready.
2. Move entire crate and pallet next to selected location.
3. Remove crate.
4. Remove boiler from pallet.
Donotdropboilerorbumpjacketon
oororpallet.Damagetoboiler can
result.
a. Tilt left side of boiler up and place a board under
left legs.
b. Tilt boiler the other way and place a board under
right legs.
c. Slideboilerbackwardoffpalletandintoposition.
5. Checklevel.
a. Shimlegs,ifnecessary.
b. Donotalterlegs.
Inspect orifices and burners
1. Remove front jacket door. Remove burner shield (see
Figure 40, item 4, page 60).
2. Checkforcorrectly-sizedmanifoldorices.See
Table 2
for sizing. (The orifice size is stamped on the orifice
spud barrel.)
Correctly-sizedmanifoldoricesmust
be used. Failure to do so will result in
severe personal injury, death or sub-
stantial property damage.
3. Reinstall burner shield.
Donotoperateboilerwithout
burner shield in place. Failure
to do so could result in severe
personal injury, death or sub-
stantial property damage.
Orifice replacement
procedure
(when required)
1. Remove the screws securing the burner shield
and remove burner shield.
2. Using a
7
/
16
”open-endwrench, removethe
burner orifices from the manifold.
3. Apply a small amount of pipe dope to each of
the new orifices and install in the manifold us-
ing a
7
/
16
”open-endwrench.Makesuretheori-
fices are aligned correctly, not cross-threaded
in the manifold tappings.
Use only pipe dope compatible
with propane gas, even if boiler
is to be operated on natural gas.
Failure to comply could result
in severe personal injury, death
or substantial property dam-
age.
4. Carefullyreplacetheburnershield.
5. Followthecheck-outprocedure,Section
8,
page 37, to assure the boiler is now operating
properly after orifices are replaced.
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