Step 2: Installing Steam Piping - HydroTherm VGAB Series Installation, Operation And Maintenance Manual

_PROCEDURE C:
Check component positioning.
1. Remove all packing material
from boiler.
2. Install on non-combustible floor
only, unless local codes permit
use and fabrication of a fireproof
base (see Fig. 2.2).
3. Check that burners and controls
are in the proper position.
4" HOLLOW CLAY TILE (TWO
COURSES) OPENINGS THRU
ii 6" OVERHANG OF BLOCK AND
SHEETMETAL ALL AROUND
FIGURE 2.2
STEP 2: INSTALLING STEAM PIPING
Typical piping connections are shown in Figure 2.3. All
external piping must be supported by hangers, not by
the boiler or its accessories.
Proper steam piping practices must be followed at all
times. Maintain proper clearances between piping and
combustible material.
Supply outlet must run full size from boiler to a header at
least 24" above top of boiler. Condensate return piping
should be connected to boiler through a "Hartford Loop."
Install gate valves in supply and return.
The supply and return lines should be equipped with
drain cocks to drain sediment and sludge from lowest
points of boiler.
STEAM
SUI'PLY
MUST BE CLOSE
NIPPLE
\
HARTFORD \
LOOP \
\\
GATE
VALVE,
\\\
DRAIN
COCKS
SUPPLY
TAPPING
NPT
FIGURE 2.3