4BE3.5 U4 C1 Obj 4 EMH

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EASY What is the first step to take before starting up a new boiler?

Make sure the boiler has a valid inspection certificate

What should you check on the boiler before startup?

The altitude gauge

Why is it important to check the altitude gauge?

To ensure the system is under minimum static pressure

What should you do if the expansion tank level is high?

Isolate the expansion valve from the system and open the expansion tank drain valve Signup and view all the answers

What should you refer to for site-specific procedures?

Site-specific procedures Signup and view all the answers

What is the purpose of reviewing the manufacturer's recommendations?

To understand the startup procedure for the boiler Signup and view all the answers

Why is it important to ensure the boiler has a valid inspection certificate?

To ensure the boiler is safe to operate Signup and view all the answers

What should you do after draining the expansion tank?

Recheck the expansion tank level Signup and view all the answers

What should be done to the primary heating loop circulator pump?

Start it Signup and view all the answers

Why is it important to vent the air at high points in the system?

To remove entrained air for better heat transfer Signup and view all the answers

What is the purpose of checking the fuel and fresh air supplies?

To ensure efficient boiler operation Signup and view all the answers

What should be done to the boiler control switch on the panel?

Turn it off Signup and view all the answers

What should be done to the control switch on the panel for boilers with high-low firing rate control?

Set it to low Signup and view all the answers

What should be done to the low water fuel cutoff or high limit control with mechanical reset devices?

Push the reset buttons Signup and view all the answers

MEDIUM What is the primary reason for venting air at high points in the system?

To improve heat transfer from the heater Signup and view all the answers

What is the purpose of checking the fuel and fresh air supplies?

To guarantee a safe and efficient startup Signup and view all the answers

What should be done to the secondary circulator pumps?

Start them according to site-specific procedures Signup and view all the answers

What is the purpose of setting the control switch to low on boilers with a high-low firing rate control?

To reduce the risk of damage during startup Signup and view all the answers

What should be done to the low water fuel cutoff or high limit control with mechanical reset devices?

Push the reset buttons to assure the switches are closed Signup and view all the answers

What is the final step before starting up a boiler?

Check the boiler and auxiliary equipment thoroughly Signup and view all the answers

What should be checked before filling the boiler with water?

The validity of the inspection certificate Signup and view all the answers

What is the purpose of verifying the minimum static pressure on the altitude gauge?

To maintain a positive pressure at the highest point in the system during operation Signup and view all the answers

What should be done if the expansion tank level is in the upper part of the gauge?

Open the expansion tank drain valve and vent the tank Signup and view all the answers

Why is it important to review the manufacturer's recommendations for startup?

To ensure the boiler is started up correctly and safely Signup and view all the answers

What should be referred to for site-specific procedures for multiple boilers sharing a common expansion tank?

The plant guidelines Signup and view all the answers

What is the primary purpose of checking the isolation valve between the expansion tank and the heating system?

To ensure the valve is open and the tank is properly prepared Signup and view all the answers

Why is it important to ensure the boiler has a valid inspection certificate?

To ensure the boiler is safe to operate and meets regulatory requirements Signup and view all the answers

What should be done to the expansion tank after draining and venting?

Open the expansion tank isolation valve and recheck the level Signup and view all the answers

HARD What is the primary purpose of ensuring the boiler control switch on the panel is in the off position before startup?

To prevent the boiler from firing unintentionally Signup and view all the answers

Why is it necessary to vent air at high points in the system?

To prevent poor heat transfer from the heater Signup and view all the answers

What is the purpose of checking the fuel and fresh air supplies before startup?

To ensure the boiler has a sufficient supply of fuel and air for operation Signup and view all the answers

What is the correct procedure for boilers with a fully modulating firing rate control?

Set the manual-automatic switch to manual and the flame control switch to low Signup and view all the answers

What is the purpose of pushing the reset buttons on the low water fuel cutoff or high limit control with mechanical reset devices?

To close the switches and enable the boiler to start Signup and view all the answers

What is the final step before starting up a boiler, according to the provided procedure?

Thoroughly checking the boiler and auxiliary equipment Signup and view all the answers

What is the primary purpose of reviewing the manufacturer's recommendations for startup?

To understand the specific startup procedures for the boiler Signup and view all the answers

What is the significance of the altitude gauge on the boiler?

It verifies the minimum static pressure required for operation Signup and view all the answers

What is the consequence of not ensuring the boiler has a valid inspection certificate?

The boiler may not be safe for operation Signup and view all the answers

What should be done if the expansion tank level is high?

Open the expansion tank drain valve and vent the tank Signup and view all the answers

Why is it important to check the isolation valve between the expansion tank and the heating system?

To ensure the valve is open and the system is properly connected Signup and view all the answers

What should be referred to for site-specific procedures for multiple boilers sharing a common expansion tank?

The plant guidelines and standard operating procedures Signup and view all the answers

What is the primary purpose of ensuring the boiler has a valid inspection certificate?

To ensure the boiler is safe for operation Signup and view all the answers

What should be done after venting and draining the expansion tank?

Close the expansion tank vent and drain, and open the expansion tank isolation valve Signup and view all the answers

Match the following steps with their corresponding actions:

<ol> <li>Make sure the boiler has a valid inspection certificate = Ensure the boiler is properly checked over, cleaned, filled with water, and closed and tightened up</li> <li>Review the manufacturer's recommendations for the startup of the boiler = Verify the manufacturer's instructions for startup and operation</li> <li>Check the altitude gauge on the boiler = Verify the system is under the minimum static pressure required to maintain a positive pressure</li> <li>Make sure the isolation valve between the expansion tank and the heating system is open = Check the level in the expansion tank and drain it if necessary</li> </ol> Signup and view all the answers

Match the following situations with their corresponding actions:

The expansion tank level is high = Isolate the expansion valve from the system, open the expansion tank drain valve, vent and drain the expansion tank, and recheck the expansion tank level The boiler has been shutdown for a prolonged time = Ensure the boiler has a valid inspection certificate and review the manufacturer's recommendations Multiple boilers share a common expansion tank = Refer to site-specific procedures The boiler is new = Follow the manufacturer's recommendations for startup and operation Signup and view all the answers

Match the following gauges with their corresponding functions:

Altitude gauge = Verifies the system is under the minimum static pressure required to maintain a positive pressure Expansion tank gauge glass = Shows the level of water in the expansion tank Combination altitude pressure gauge = Indicates the pressure in metres and the altitude pressure Fuel gauge = Not mentioned Signup and view all the answers

Match the following steps with their corresponding purposes:

Review the manufacturer's recommendations = To understand the startup and operation procedures for the boiler Check the altitude gauge = To verify the system is under the minimum static pressure required to maintain a positive pressure Check the isolation valve = To ensure the expansion tank is connected to the heating system Drain the expansion tank = To remove excess water from the expansion tank Signup and view all the answers

Match the following situations with their corresponding consequences:

The boiler does not have a valid inspection certificate = The boiler may not be safe to operate The expansion tank level is high = The tank may be full and need to be drained The altitude gauge is not checked = The system may not be under the minimum static pressure required to maintain a positive pressure The isolation valve is closed = The expansion tank may not be connected to the heating system Signup and view all the answers

Match the following actions with their corresponding purposes:

Venting and draining the expansion tank = To remove air and excess water from the expansion tank Checking the fuel and fresh air supplies = To ensure the boiler has the necessary resources for operation Reviewing the manufacturer's recommendations = To understand the startup and operation procedures for the boiler Checking the altitude gauge = To verify the system is under the minimum static pressure required to maintain a positive pressure Signup and view all the answers

Match the following steps with their corresponding sequences:

Make sure the boiler has a valid inspection certificate = Step 1 Review the manufacturer's recommendations for the startup of the boiler = Step 2 Check the altitude gauge on the boiler = Step 3 Make sure the isolation valve between the expansion tank and the heating system is open = Step 4 Signup and view all the answers

Match the following components with their corresponding functions:

Expansion tank = Stores excess water from the heating system Altitude gauge = Verifies the system is under the minimum static pressure required to maintain a positive pressure Isolation valve = Connects or disconnects the expansion tank from the heating system Boiler = Heats water for the heating system Signup and view all the answers

Match the following boiler startup procedures with their corresponding actions:

Start the primary heating loop circulator pump = Vent the air at high points in the system Check the fuel and fresh air supplies = Ensure the temperature setting of the high limit control Set the control switch to low on boilers with high-low firing rate control = Ensure the boiler control switch on the panel is in the off position Push the reset buttons on the low water fuel cutoff or high limit control = Ensure the switches are closed Signup and view all the answers

Match the following boiler components with their corresponding purposes:

Expansion tank = Ensure the boiler is serviced on-line or being brought on-line High limit control = Regulate the temperature setting Primary heating loop circulator pump = Vent the air at high points in the system Altitude gauge = Verify the minimum static pressure Signup and view all the answers

Match the following boiler startup procedures with their corresponding purposes:

Check the fuel and fresh air supplies = Ensure the boiler has sufficient resources Vent the air at high points in the system = Prevent entrained air from affecting heat transfer Set the manual-automatic switch to manual = Start the boiler in low-fire position Push the reset buttons on the low water fuel cutoff or high limit control = Ensure the switches are closed Signup and view all the answers

Match the following boiler components with their corresponding settings:

Control switch on the panel = Off position before startup Flame control switch = Low-fire position High-low firing rate control = Low firing rate before startup Manual-automatic switch = Manual mode before startup Signup and view all the answers

Match the following boiler startup procedures with their corresponding consequences:

Not ensuring the boiler has a valid inspection certificate = Not complying with regulations Not venting air at high points in the system = Poor heat transfer from the heater Not checking the fuel and fresh air supplies = Insufficient resources for startup Not setting the control switch to low on boilers with high-low firing rate control = Incorrect firing rate Signup and view all the answers

Match the following boiler components with their corresponding actions:

Low water fuel cutoff or high limit control = Push the reset buttons to assure the switches are closed Secondary circulator pumps = Start the pumps according to site-specific procedures Expansion tank = Ensure the boiler is serviced on-line or being brought on-line Boiler control switch on the panel = Ensure the switch is in the off position before startup Signup and view all the answers

Study Notes

Preparation for Startup

Ensure the boiler has a valid inspection certificate before startup or after a prolonged shutdown.
Review the manufacturer's recommendations for startup and operation.

Pre-Startup Checks

Verify the boiler's altitude gauge indicates a minimum static pressure to maintain positive pressure at the highest point in the system.
Ensure the isolation valve between the expansion tank and the heating system is open.
Check the expansion tank level, and if high, drain and vent the tank to the correct level.

Expansion Tank Preparation

If multiple boilers share a common expansion tank, follow site-specific procedures to ensure all on-line boilers are serviced.
Ensure the expansion tank isolation valve is open.

Heating System Preparation

Start the primary heating loop circulator pump and vent air at high points in the system until a solid stream of water flows.
If the system has secondary heating loops, start the secondary circulator pumps following site-specific procedures.

Fuel and Air Supply Checks

Check the fuel and fresh air supplies before startup.
Verify the temperature setting of the high limit control.

Boiler Controls

Ensure the boiler control switch on the panel is in the off position before startup.
Set the control switch to low on boilers with a high-low firing rate control.
For boilers with a fully modulating firing rate control, set the manual-automatic switch to manual and the flame control switch to low-fire.

Final Checks

Push the reset buttons on the low water fuel cutoff and high limit control if equipped with mechanical reset devices.
Ensure all checks are complete before starting the boiler.

Preparation for Startup

Ensure the boiler has a valid inspection certificate before startup or after a prolonged shutdown.
Review the manufacturer's recommendations for startup and operation.

Pre-Startup Checks

Verify the boiler's altitude gauge indicates a minimum static pressure to maintain positive pressure at the highest point in the system.
Ensure the isolation valve between the expansion tank and the heating system is open.
Check the expansion tank level, and if high, drain and vent the tank to the correct level.

Expansion Tank Preparation

If multiple boilers share a common expansion tank, follow site-specific procedures to ensure all on-line boilers are serviced.
Ensure the expansion tank isolation valve is open.

Heating System Preparation

Start the primary heating loop circulator pump and vent air at high points in the system until a solid stream of water flows.
If the system has secondary heating loops, start the secondary circulator pumps following site-specific procedures.

Fuel and Air Supply Checks

Check the fuel and fresh air supplies before startup.
Verify the temperature setting of the high limit control.

Boiler Controls

Ensure the boiler control switch on the panel is in the off position before startup.
Set the control switch to low on boilers with a high-low firing rate control.
For boilers with a fully modulating firing rate control, set the manual-automatic switch to manual and the flame control switch to low-fire.

Final Checks

Push the reset buttons on the low water fuel cutoff and high limit control if equipped with mechanical reset devices.
Ensure all checks are complete before starting the boiler.

Preparation for Startup

Ensure the boiler has a valid inspection certificate before startup or after a prolonged shutdown.
Review the manufacturer's recommendations for startup and operation.

Pre-Startup Checks

Verify the boiler's altitude gauge indicates a minimum static pressure to maintain positive pressure at the highest point in the system.
Ensure the isolation valve between the expansion tank and the heating system is open.
Check the expansion tank level, and if high, drain and vent the tank to the correct level.

Expansion Tank Preparation

If multiple boilers share a common expansion tank, follow site-specific procedures to ensure all on-line boilers are serviced.
Ensure the expansion tank isolation valve is open.

Heating System Preparation

Start the primary heating loop circulator pump and vent air at high points in the system until a solid stream of water flows.
If the system has secondary heating loops, start the secondary circulator pumps following site-specific procedures.

Fuel and Air Supply Checks

Check the fuel and fresh air supplies before startup.
Verify the temperature setting of the high limit control.

Boiler Controls

Ensure the boiler control switch on the panel is in the off position before startup.
Set the control switch to low on boilers with a high-low firing rate control.
For boilers with a fully modulating firing rate control, set the manual-automatic switch to manual and the flame control switch to low-fire.

Final Checks

Push the reset buttons on the low water fuel cutoff and high limit control if equipped with mechanical reset devices.
Ensure all checks are complete before starting the boiler.

Preparation for Startup

Ensure the boiler has a valid inspection certificate before startup or after a prolonged shutdown.
Review the manufacturer's recommendations for startup and operation.

Pre-Startup Checks

Verify the boiler's altitude gauge indicates a minimum static pressure to maintain positive pressure at the highest point in the system.
Ensure the isolation valve between the expansion tank and the heating system is open.
Check the expansion tank level, and if high, drain and vent the tank to the correct level.

Expansion Tank Preparation

If multiple boilers share a common expansion tank, follow site-specific procedures to ensure all on-line boilers are serviced.
Ensure the expansion tank isolation valve is open.

Heating System Preparation

Start the primary heating loop circulator pump and vent air at high points in the system until a solid stream of water flows.
If the system has secondary heating loops, start the secondary circulator pumps following site-specific procedures.

Fuel and Air Supply Checks

Check the fuel and fresh air supplies before startup.
Verify the temperature setting of the high limit control.

Boiler Controls

Ensure the boiler control switch on the panel is in the off position before startup.
Set the control switch to low on boilers with a high-low firing rate control.
For boilers with a fully modulating firing rate control, set the manual-automatic switch to manual and the flame control switch to low-fire.

Final Checks

Push the reset buttons on the low water fuel cutoff and high limit control if equipped with mechanical reset devices.
Ensure all checks are complete before starting the boiler.

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