Weil-McLain CGi Series 3 Installation And Maintenance Manual page 12

CG i
GAS-FIRED wATER BOILER- sERIEs a -
Boiler Manual
2a
12
Prepare boiler - placement & setup
Place boiler/crate near
position
t.
Leave boiler in crate and on pallet until installatio n site
is ready.
2. Move entire crate and pallet next to selected location.
3. Remove crate.
4. Remove boiler from pallet
NOTICE
I
Do not drop boiler or bmnp jacket on
. floor 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
t. Remove front jacket door. Remove burner shield (see
Figure
40, item
4, page 60).
2. Check forcorrectly-sized manifold orifices. See Table 2
for sizing. (The orifice size is stan1ped o n the orifice
spud barrel.)
Correctly-sized manifold orifices must
be
used.
Failure to do so will result in
severe personal injury, death or sub-
stantial property damage.
3. Reinstall burner shield.
I&
WARNING!
Do no t 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)
t.
Remove the screws securing the burner shield
and remove burner shield.
2. Using a
'h<''
open-end wrench, rem ove the
burner orifices from the manifold.
3. Apply a small amount of pipe dope to each of
t11e new orifices and install in t11e manifold us-
ing a
'I..''
open-end wrench.JV!akesure the ori-
fices are aligned correctly, not cross-threaded
in the manifold tappings.
I&
WARNING!
Use only pipe dope compatible
with propane gas, even if boiler
is to be operated o n natural
gas. Failure to comply could
result in severe personal injury,
death or substantial property
damage.
4. Carefully replace the burner shield.
5. Follow the check-o ut procedure, Section 8
page 36,
to assure the boiler is now operating
properly after orifices are replaced.
Table 2 Manifold orifice sizing at sea level and
a~ltudes
to 4,500 feet
Location Boiler model Natural gas Propane gas
number
0-2,000 "·
over 2,000 H.
0-2,000 "·
over 2,000 ft.
CGi-25 2.30mm
#54
u.s.
CGi-3
and
CGi-5 2.55mm (Note 1) 1.60mm (Note 1)
CGi-4, CGi-6 - CGi-8 2.70mm 1.65mm
0-2,000 "·
2,000-4,500
0-2,000 "·
2,000-4,500
Canada
CGi-25 2.30mm #44
#54
#55
CGi-3
and
CGi-5 2.55mm #41 1.60mm 1.45 mm
CGi-4, CGi-6 - CGi-8 2.70mm #38 1.65mm #53
Note 1: For elevations
above 2,000 leet,
contact your local Weii·Mclain sales office lor details.
Part Number 550-142-780/0712