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Harsco Industrial, Patterson-Kelley Technical Service 1.877.728.5351
Gas Fired Boiler
Gas Flow Rate (CFH)
Model
Number
Input Rating
(BTU/Hr)
Voltage
Phase Total
Amperage
Natural
Gas
(1030 Btu/ft^3)
LP
Gas
(2500 Btu/ft^3)
Output
Capacity
(Btu/hr)
SC-2000
2,000,000
208-240
Single
Less than 15
1942 800
1,920,000
SC-3000
3,000,000
208-240
Three
Less than 20
2913
1200
2,880,000
440-480
Three
Less than 20
SC-4000
4,000,000
208-240
Three
Less than 20
3883
1600
3,840,000
440-480
Three
Less than 20
4.2 Normal Lighting and Shut-down Procedures
Normal Lighting Procedures
1. Make sure the system is filled with water and water is circulating in the system. Turn on electrical
supply and open the gas supply valves to the boiler.
2. Turn the on/off switch to the “On” position. If an error is indicated, refer to the NURO Advanced User’s
Guide to troubleshoot the problem and take necessary corrective action before proceeding.
3.
Set the desired high temperature limit and operating temperature. The NURO controller will now begin
the automatic firing sequence.
Normal Shut Down Procedures
1. Allow the boiler to turn off on its own once the
temperature satisfies, or remove the call for heat to
the boiler.
2. Once the boiler completes a successful “Post-
Purge” and “Post-Pump”, it will return to “Standby”.
3. Once in standby, turn the on/off switch to the “Off”
position.
4. Close all manual gas valves (See
Figure 4.3
).
5. Turn off the electrical disconnect to the boiler.
4.3 Emergency Shut-Off
In case of emergency, shut off the gas supply at a valve
external to the boiler. See
Figure 4.3
for valve locations.
The upper shut off valve is for Propane Gas and the
lower valve for Natural Gas.
4.4 Typical Boiler Operating Conditions
Table 4.4
Figure
4.3
Propane
Gas
Natural
Gas
Summary of Contents for SC-2000
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