Section 2: Boiler Installation; Step 1: Locating/Setting Boiler - Smith Cast Iron Boilers GB200 SERIES Installation & Operation Manual

Gb200 series gas-fired steam cast iron boilers
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SECTION 2: BOILER INSTALLATION

STEP 1: LOCATING/SETTING BOILER

Boiler may be installed in an alcove (see dimensions in Fig-
ure 2.1). Locate boiler so connecting flue pipe between draft
hood and chimney is as short as possible.
Observe the following minimum clearances to combustibles:
18" on sides...alcove at front...28" at top...18" at rear...6" from
flue pipe in any direction. Maintain a minimum 1" clearance
between hot water piping and combustible materials. Local
code requirements may specify greater clearances and must
be adhered to.
Remove boiler from carton and set it in position. Install on
non-combustible floor only, unless local codes permit use
and fabrication of a fireproof base (see Figure 2.2).
FIGURE 2.1: MODEL GB200 BOILER DIMENSIONS
B
PRESS.
SPILL SWITCH
GAUGE
9 7/8"
LOW
WATER
CUT-OFF
41"
2 1/2"
21"
14 3/4"
16 1/2"
2" RETURN
18 1/8"
FRONT
21 7/8"
-LEFT SIDE VIEW-
PROBE LOCATION FOR ELECTRIC LWCO.
NOTE: OPTIONAL FLOAT LOW WATER CUT-OFF
DIMENSIONS
BOILER
MODEL
A
GB200-S-3
15 3/8"
GB200-S-4L
18 7/8"
GB200-S-4H
18 7/8"
GB200-S-5
22 3/8"
PRESS.
RELIEF VALVE
PRESSURE CONTROL
3"
2" STEAM
SUPPLY
WATER
LEVEL
INDICATOR
1/2"
PLUGGED
GAS
TAPPING
VALVE
23 1/4"
20"
3 3/8"
2 3/8"
6 3/4"
Remove all packing material from boiler. Check that burners,
draft diverter and controls are in proper position.
Boiler shall be installed such that the gas ignition system
components are protected from water (dripping, spraying,
rain, etc.) during appliance operation and service (low water
cut-off repacement, condensate trap replacement, control
replacement).
NOTE: Do not loosen tie rods on boiler absorption unit.
They are intended to accommodate thermal expansion.
Loss of boiler's structural integrity and water leaks/dam-
age may result.
WARNING: Never install boiler on carpeting as heat
damage and/or fire may result.
MINIMUM CLEARANCES
TO COMBUSTIBLES
B
Top:
28"
5"
Rear:
18"
6"
Left & Right:
18"
6"
Front:
ALCOVE
7"
3/4" PLUGGED
TAPPING
WATER
LINE
ROLLOUT SWITCH
26 7/8"
23 1/4"
18 1/4"
A
-FRONT VIEW-
SHOWN.
4
2" RETURN
REAR
23 7/8"
14 3/4"
2 1/2"
18 1/8"
-RIGHT SIDE VIEW-

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