Owner's manual

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SECTION 2 EDR-IOM-2014-0318 INSTALLATION
2-5
(Figure 1). This will allow access around the equipment
to facilitate maintenance and a safe work environment.
An 1 inch (25.4 mm) side clearance is acceptable
between any number of boilers. Custom con gurations
may not allow 1 inch (25.4 mm) side clearance.
Although a 1 inch (25.4 mm) side clearance is permitted,
allowing 24 inches (610 mm) will facilitate and expedite
maintenance and any advanced troubleshooting.
NOTE:  Side panels are latched; however, maintenance
and service does not require boiler access through side
panels. All maintenance and service can be performed
from front, rear, and top of boiler.
3. Ensure all labels on the boiler will be fully visible for
maintenance and inspection.
4. Do not place any boiler room accessories, or other
components, on the Endura skid.
Install Boiler Trim
Each Endura boiler is supplied with a safety relief valve sized
in accordance with ASME requirements. Adhere to the
following installation requirements:
1. The safety relief valve (Figure 2) must:
» Be connected to the coupling located in the
top of the boiler.
» Be installed in the vertical position.
NOTE:  Safety relief valve size is determined by trim
pressure and is supplied in the trim kit along with
appropriate bushing, inlet and outlet sizes. See Table 2.
Standard trim pressure is 60 PSIG.
2. The discharge pipe must:
» Not have a diameter less than the full area of
the valve outlet.
» Be as short and straight as possible and so
arranged as to avoid undue stress on the valve.
» Be supported by means other than the safety
valve itself.
» Be piped to avoid danger of scalding
personnel.
NOTE:  Each boiler is equipped with a pressure-
temperature gauge to be installed in the outlet piping
section of the boiler. Gauge must not be isolated from
the boiler by any valve.
TABLE 2  SAFETY RELIEF VALVE INLET AND OUTLET SIZES
Model Trim Pressure
PSI (kPa)
Inlet Size
inch (mm)
Outlet Size
inch (mm)
EDR-1000 30 (206.84)
through
160 (1103.16)
3/4 (19.05) 1 (25.4)
EDR-1500 30 (206.84) 1 (25.4) 1 1/4 (31.75)
60 (413.69) 3/4 (19.05) 1 (25.4)
100 (689.48) 3/4 (19.05) 1 (25.4)
125 (861.84) 3/4 (19.05) 1 (25.4)
160 (1103.16) 3/4 (19.05) 1 (25.4)
EDR-2000 30 (206.84) 1 1/4 (31.75) 1 1/2 (38.1)
60 (413.69) 1 (25.4) 1 1/4 (31.75)
100 (689.48) 3/4 (19.05) 1 (25.4)
125 (861.84) 3/4 (19.05) 1 (25.4)
160 (1103.16) 3/4 (19.05) 1 (25.4)
Note: Valve is
shipped loose
and must be
installed by the
contractor.
FIGURE 2  SAFETY VALVE LOCATION