Review Test Flashcards
Commercial blueprints specifications are called what
Divisions
When a project is always the same layout. What’s the blueprint called
Blanket
What’s the most common Hvac equipment used in commercial
Packaged roof top unit
What need to be checked before cutting area for RTU
Make sure it’s safe to open the area. Nothing in the way below
All duct work must comply to what
Smacna standards
Fire dampers
Balancing dampers
Duct insulation
Will be identified on what in a blue print
Call-out
Before making changes what must be done to blueprint
Confirmed with engineers
What size hole needs reinforcement
6 inch
Trapeze hangers are used for what projects
Commercial to hand ducts
Hanger straps are made of what
16 gauge at 1’ wide
Tear drop hangers are also called
Sling hanger
Hanger supports for 10 ft spiral
7-8 ft
Dotted lines on rectangle ducts are used to show what
Insulation
How should balancing dampers be installed
Ideally downstream of the branch takeoff
And accessible
Primary component in hrv
Heat exchanger core