3
Part Number 550-142-785/0812
Service clearances
1. Provide minimum clearances for cleaning and servicing the
boiler and for access to controls and components as listed in
the table below:
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.
Small space installations
1. When the boiler is located in a closet or small space, provide
clearances no less than those shown in Figure 1. The clear-
ances are required to any surface, whether combustible or
non-combustible.
Table 1
Minimum foundation size
GWI
Series 2
Gas-Fired Water Boilers –
Boiler Manual
Service clearances:
Minimum
Top
(for cleaning flueways)
35”
Front
(for access to controls and components)
18”
Back
7”
Left side
(for cleaning and servicing)
24”
Right side
7”
Boiler
model
Minimum
foundation
length
Minimum
foundation
width
GWI-047
25”
12”
GWI-063
25”
12”
GWI-095
25”
15”
GWI-127
25”
18”
GWI-158
25”
21”
GWI-190
25”
24”
Minimum clearance to combustible materials
1. Hot water pipes must be at least ½” from combustible material.
2. Single-wall vent pipe must be at least 2 inches from combus
-
tible material.
3. Type B double-wall metal vent pipe — see vent manufacturer’s
recommendation for clearances to combustible material.
Figure 1
Minimum clearances
Flooring and foundation
Flooring
The GWI boiler is approved for installation on combustible flooring,
but must never be installed on carpeting.
Do not install boiler on carpeting even if foundation
is used. Fire can result, causing severe personal
injury, death or substantial property damage.
Foundation
1. Provide a solid brick or minimum 2-inch thick concrete founda
-
tion pad if any of the following is true:
• floor can become flooded.
• the boiler mounting area is not level.
2. See
Table 1
for minimum foundation dimensions.
Residential garage installations
Take the following special precautions when installing the boiler in
a residential garage, per ANSI Z223.1, paragraph 5.1.9:
• 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.
1 Prepare boiler location
continued
Clearances
