Williamson Series 2 - Flooring and Foundation; Residential Garage Installations

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ooring,
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:
• oorcanbecomeooded.
• 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