Calumet GSA Manual - Prepare Boiler Location
GSA Gas-Fired Steam Boilers – Boiler Manual
3
Part Number 550-110-738/0703
Clearances
Flooring and foundation
Do not install boiler on combustible flooring or
carpeting even if a concrete or aerated foundation is
used. Fire can result, causing severe personal injury,
death or substantial property damage.
1.
Provide a solid brick or minimum 2-inch thick concrete
foundation 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.
3. Use a foundation with airways when:
•
Electrical wiring or telephone cables buried in the concrete
floor of the boiler room.
•
Concrete floor is “green”.
•
Water is channeled under the concrete.
Residential garage installation
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, 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
Figure 1
Minimum clearances - alcove installation only
Large space — (see minimum room volume, below)
If installed in a four-walled room, the room volume must be no less
than the following (Ceiling height, if over 8 feet, can only be counted
as 8 feet.):
GSA-075 & GSA-100
147 cubic feet
GSA-125 & GSA-150
184 cubic feet
GSA-175 & GSA-200
221 cubic feet
GSA-250
257 cubic feet
The room must provide the following minimum clearances (in all
directions) to the boiler and components:
Jacket and flue collector sides & rear
6 inches
Jacket front
18 inches
Vent pipe (other than Type B vent)
6 inches
Vent damper
6 inches
Table 1
Minimum foundation size
Boiler
model
Minimum
foundation
length
Minimum
foundation
width
GSA-075 — GSA-100
29
5
/
8
"
19"
GSA-125 — GSA-150
29
5
/
8
"
23
1
/
4
"
GSA-175 — GSA-200
29
5
/
8
"
27
1
/
2
"
GSA-250
29
5
/
8
"
31
3
/
4
"
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.
Service clearances:
Minimum
Top
(for cleaning flueways)
46"
Front
(for access to controls and components)
18"
Back
6"
Left side
(for cleaning and servicing)
24"
Right side
6"
Minimum clearance to combustible materials
General — all installations
1. Hot water pipes must be at least ½" from combustible material.
2. Single-wall vent pipe must be at least 6 inches from combustible
material.
3. Type B double-wall metal vent pipe — See vent manufacturer’s
recommendation for clearances to combustible material.
Small space — alcove (not closet) installation
GSA boilers are not approved for closet installation
— only for alcove installation, with minimum
clearances as shown in Figure 1 and the table below,
and the front side completely open — that is, a 3-
walled room.
Clearances from combustible materials:
Minimum
Top
46"
Front
(provide means of access)
3"
Back
6"
Left side
(provide means of access)
4"
Right side
4"