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CGi
SERIES 4 — GAS-FIRED WATER BOILER —
1b
Prepare boiler location — clearances
Recommended SERVICE clearances
(Fig. 1a)
1. Provide clearances for cleaning and servicing the boiler and
for access to controls and components. See Figure 1a for
recommendations.
2. Provide at least screwdriver clearance to jacket front panel
screws for removal of front panel for inspection and minor
service. If unable to provide at least screwdriver clearance,
install unions and shutoff valves in system so boiler can be
moved for servicing.
Figure 1a
Recommended
SERVICE
clearances
(see WARNING
below)
If any clearance is less than in Figure 1a, pro-
vide openings for combustion and ventilation
air located on the wall or door opposite the
boiler FRONT (see Figure 1b)
These openings must be located as shown in Figure 1b to
provide proper air flow around the boiler. The free area of each
opening (after deducting for louvers) must be at least one square
inch per 1,000 Btuh of boiler input. If the building is of unusually
tight construction (see page 11 for definition), the air openings
must connect directly to outside or the building must have air
openings to the outside as specified on page 11.
If clearances are equal to or greater than Figure 1a, see pag-
es 10 and 11 for location and sizing of combustion air openings.
Failure to comply can result in severe personal injury, death or
substantial property damage and reduced boiler life.
Required MINIMUM clearances
Never install the boiler in a space with
clearances less than the minimum
clearances shown in Figure 1b. Failure
to comply can result in severe personal injury,
death or substantial property damage and re-
1. Hot water pipes: at least ¹⁄₂ inch from combustible material.
duced boiler life.
2. Single-wall vent pipe: at least 6 inches from combustible
material.
3. Type B double-wall metal vent pipe: refer to vent manufac-
turer's recommendation for clearances to combustible material.
Part Number 550-142-302/0124
Boiler Manual
Figure 1b Required MINIMUM clearances
Flooring
The CGi boiler is approved for installation on combus-
tible flooring, but must never be installed on carpeting.
.
Foundation
1. Provide a solid brick or minimum 2-inch thick con-
crete foundation pad if any of the following is true:
•
•
2. Minimum dimensions are 25 inch length by:
(Fig. 1b)
Residential garage installations
Take the following special precautions when installing
the boiler in a residential garage. If the boiler is located
in a residential garage, per ANSI Z223.1/NFPA 54 - lat-
est edition:
Mount the boiler a minimum of 18 inches above the
•
floor of the garage to assure the burner and ignition
devices will be no less than 18 inches above the floor.
•
Locate or protect the boiler so it cannot be damaged
by a moving vehicle.
Do not install boiler on carpeting
even if foundation is used. Fire can
result, causing severe personal
injury, death or substantial property
damage.
floor can become flooded.
the boiler mounting area is not level.
Minimum foundation width:
CGi-25/3
12"
CGi-4
15"
CGi-5
18"
CGi-6
21"
CGi-7
24"
CGi-8
27"
7
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