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GB300 BOILER INSTALLATION AND OPERATION INSTRUCTIONS

LIGHTING INSTRUCTIONS

A.If this appliance is equipped with a continuous pilot it must be lit by hand. Follow the lighting instructions exactly when lighting the pilot. If this appliance is equipped with an intermittent pilot, the ignition control will automatically light the pilot. Follow the operating instructions and do not try to light the pilot or burner by hand.

B.BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

C.Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water.

CAUTION: To prevent being burned, stand clear of the boiler during ignition and don't touch any hot metal parts.

Continuous Pilot Systems

1.STOP! Read the safety information above. If, at any time, the boiler will not operate properly, follow the instructions “TO TURN OFF GAS TO BOILER” and call your service technician or gas supplier.

2.Set the operating control to off or its lowest setting.

3.Turn off all electric power to the boiler.

4.Close the manual main and pilot gas shut-off valves.

5.Wait five (5) minutes** to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information above (to the left) on the label. If you don’t smell gas, go to the next step.

6.Remove the front grill(s).

7.Connect a manometer having a minimum capacity of 20" WC to the outlet pressure port of the gas valve. Make sure that the gas supply piping has been purged of air and that all gas joints up to the manifold have been thoroughly checked for leaks.

8.Locate the pilot(s).

9.Open the petcock pilot valve.

10.Push and hold down the red button on the pilotstat. Light the pilot with a match and wait approximately one

(1) minute before releasing the button. The button should pop back and the pilot(s) remain lit. For two pilot systems repeat this procedure for the other pilot. If a pilot will not stay lit after several tries, adjust pilot reg to higher pressure. Turn reg clockwise to increase and countercloskwise to decrease pressure. If pilot still fails to light, close the manual pilot valve and call your service technician or gas supplier.

11.With the pilot(s) lit, turn on all electric power to the appliance.

12.Open the manual main gas shut-off valve.

13.Set the operating control so there's a call for heat.

14.The burners should light with proper boiler operation.

15.A boiler designed for use with natural gas should have a manifold gas pressure of 3.5" WC on High Fire and 0.8" WC on Low Fire for 2 stage units. On an LP boiler, the manifold pressure should be 10" WC on highfire, 2 stage firing not avaialble on LP models. To adjust the manifold gas pressure see the GAS PRESSURE ADJUST-MENT instructions in the BOILER CHECKING & ADJUSTMENT section.

16.Test the ignition safety shutoff device. Close the manual pilot valve. Within three minutes the pilotstat should close de-energizing the main gas valve(s). Repeat steps 9 through 14. Disconnect the thermo- couple from the pilotstat, the main burners should go out. Extinguish the pilot and reconnect the thermo- couple. There should be NO gas flow to the main burners with the pilot out! If gas flow is detected, immediately turn the main manual shut-off valve off and have the problem corrected.

Intermittent Pilot Ignition Systems

1.STOP! Read the safety information above. If, at any time, the boiler will not operate properly, follow the instructions “TO TURN OFF GAS TO BOILER” and call your service technician or gas supplier.

2.Set the operating control to off or its lowest setting.

3.Turn off all electric power to the boiler.

4.Close the manual main and pilot gas shut-off valves.

5.Wait five (5) minutes** to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow “B” in the safety information above (to the left) on the label. If you don’t smell gas, go to the next step.

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Smith Cast Iron Boilers GB300 warranty Lighting Instructions, Continuous Pilot Systems, Intermittent Pilot Ignition Systems
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GB300 specifications

The Smith Cast Iron Boilers GB300 series is renowned for its robust construction and exceptional performance, making it a preferred choice for commercial and industrial applications. This line of boilers is designed to provide reliable and efficient heating solutions for a variety of facilities, including schools, hospitals, and manufacturing plants.

One of the standout features of the GB300 series is its durable cast iron construction. Built to withstand the demands of heavy-duty operation, the cast iron material ensures longevity and resilience against thermal cycling stresses. This design not only enhances the boiler's lifespan but also ensures that it maintains optimal performance over time, even in rigorous conditions.

The GB300 series is equipped with advanced technologies that contribute to its efficiency and ease of use. For instance, the boilers incorporate a flexible firing system that allows for a range of firing rates. This adaptability ensures that the boiler can efficiently meet varying heating loads. Additionally, the use of a multi-pass heat exchanger design maximizes heat transfer, significantly improving overall efficiency and reducing fuel consumption.

Another key characteristic of the GB300 boilers is the user-friendly control system. The integrated control panel provides operators with real-time monitoring and management capabilities, allowing for precise adjustment of temperature and pressure settings. This feature not only enhances operational efficiency but also aids in maintaining safety standards.

The GB300 series also emphasizes safety, featuring multiple levels of protection, including low water cut-off, high-pressure switches, and safety valves. These safety mechanisms ensure reliable operation and minimize the risk of operational hazards, providing peace of mind for operators and facility managers.

Versatility is another remarkable attribute of the Smith Cast Iron Boilers GB300 series. These boilers can be used in various configurations, whether as a standalone unit or as part of a more extensive heating system. This flexibility makes the GB300 series suitable for diverse applications and facility sizes.

In summary, the Smith Cast Iron Boilers GB300 series is a powerful heating solution that combines durability, efficiency, and advanced technology. Its robust cast iron construction, flexible firing capabilities, and comprehensive safety features make it an ideal choice for those seeking reliable heating systems in demanding environments. The GB300 series stands out as a testament to Smith's commitment to quality and innovation in the boiler industry.
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