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22 Cards in this Set

  • Front
  • Back

Who's recommendations should be followed prior to start up?

Boiler manufacturer

Which section of manual covers the dist the boiler is to be from combustible mat.

Pre-installation

After completing water piping installer should

Flush piping to remove impurities

What standard must be followed when venting flue gases from boiler

Authority having jurisdiction

What can happen if system isn't properly filled

Air gets trapped in system

What is 1st step in servicing a boiler venting and main burner

Turn off electrical and gas supplies

What is best way to clean main burner

Vacuum and sod brush

When techs perform continuity tests, they are checking for

Opened or closed set of contacts

What type of Tstat is used on hydronic system

T stat without heat anticipator

Loose wire on an aquastat may

Prevent main burner from firing

Main function of LWCO on hit water heating boiler

Prevent boiler main burner from starting when there low water

How to test float type LWCO

Isolate and drain the LWCO so main burner will shut down

What should be done if you test a 24 VAC transformer and obtain a reading of zero

Test supply power for transformer

What may untreated water cause in hydronic system

Ferrous materials to oxidize

Spill switch is for

Products of combustion spilling out from draft hood

Main function of zone valve

To start and stop flow to a circuit

What must be done when zone valve drive motor fails

Replace drive motor

What will happen to condensing boiler when return temp is too low

Unnecessary damage and boiler failure

What should be completed after service call?

Proper service and maintenance log

Step 1. Close the _____ to all _____ to the radiant floor heating system

Isolation valves, zones and circuits

2. Connect a ____ to a _____ on the boiler or on the manifold supplying zone.

Hose, hose bibb

3. Open ____ or _____ to the boiler and system

Fill valve, water make up