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4.2 Normal Lighting and Shut-down Procedures
4.2.1 Normal Lighting Procedures
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.
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.
Set the desired high temperature limit and operating temperature. The NURO controller will now begin
•
the automatic firing sequence.
4.2.2 Normal Shut Down Procedures
Allow the boiler to turn off on its own once the
•
temperature satisfies, or remove the call for
heat to the boiler.
Once the boiler completes a successful "Post-
•
Purge" and "Post-Pump", it will return to
"Standby".
Once in standby, turn the on/off switch to the
•
"Off" position.
Close all manual gas valves to right.
•
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 illustration on the right
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
Model
Input Rating
Number
(BTU/Hr)
SC-1500
1,500,000
SC-2000
2,000,000
SC-3000
3,000,000
SC-4000
4,000,000
Voltage
Phase
110-120
Single
110-120
Single
208-240
Three
440-480
Three
208-240
Three
440-480
Three
P-K SONIC
T T T T echnical Service 1.877.728.5351
echnical Service 1.877.728.5351
echnical Service 1.877.728.5351
echnical Service 1.877.728.5351
Gas Flow Rate (CFH)
Total
Natural
Amperage
Gas
(1030 Btu/ft^3)
Less than 15
1456
Less than 15
1942
Less than 20
2913
Less than 20
Less than 20
3889
Less than 20
TM
Gas Fired Boiler
LP
Output
Gas
Capacity
(Btu/hr)
(2500 Btu/ft^3)
600
1,440,000
800
1,920,000
1200
2,880,000
1600
3,840,000
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