How to Start a Boiler

Beginner 1 hour 13 steps 34075 views Rating: 4.4/5 Published: 2026-02-01

Familiarize yourself with the boiler operating instructions.. Check for gas and water leaks.. Open the relief valve and fill the water tank.

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Steps

1

Familiarize yourself with the boiler operating instructions.

Step 1

Familiarize yourself with the boiler operating instructions.

2

Check for gas and water leaks.

Step 2

Check for gas and water leaks.

3

Open the relief valve and fill the water tank.

Step 3

Open the relief valve and fill the water tank.

4

Check the thermostat(s) and valves, then set the thermostat(s) to low.

Step 4

Check the thermostat(s) and valves, then set the thermostat(s) to low.

5

Turn off power to the boiler and remove the front jacket panel.

Step 5

Turn off power to the boiler and remove the front jacket panel.

6

Turn off the gas to the boiler.

Step 6

Turn off the gas to the boiler.

7

Restore gas to the boiler then turn it on.

Step 7

Restore gas to the boiler then turn it on.

8

Increase the boiler temperature gradually.

Step 8

Increase the boiler temperature gradually.

9

Reattach the jacket panel.

Step 9

Reattach the jacket panel.

10

Check the boiler's connections and fuses.

Step 10

Check the boiler's connections and fuses.

11

Verify the high limit for temperature or pressure.

Step 11

Verify the high limit for temperature or pressure.

12

Investigate the gas supply.

Step 12

Investigate the gas supply.

13

Call a boiler repair or maintenance professional if problems persist.

Step 13

Call a boiler repair or maintenance professional if problems persist.

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