HVAC Rough

Question 1

The air handler and/or gas furnace in the attic is to be hung ________, _____________, and secured from all four corners of the unit to the top chord of the trusses.

Answer 1

plumb, level,

Question 2

The air handler is to be completely sealed to the ___________ to eliminate any air intake from the attic, walls, or garage.

Answer 2

plenum/platform

Question 3

The plenum is to be completely sealed to the air handler using a _________ type product.

Answer 3

mastic

Question 4

The air handler panel door is to be installed using __________ clips or ___________. (No tape).

Answer 4

1. plastic
2. screws

Question 5

Line sets at the air handler are to be completely sealed to the unit using a ________ __________.(No cork tape).

Answer 5

silver tape

Question 6

All unused openings on the air handler are to be plugged with a _________ type or ____________ plug. (No tape).

Answer 6

1. plastic
2. approved

Question 7

Condensate lines to slope min. _______” per foot away from pan (no reverse fall, humps, or bellies).

Answer 7

1/8”

Question 8

Primary condensate line installed on the exterior of the home approximately ______”- _____” AFF, extend _______”-_________” past the stucco with a 90° elbow at the end.

Answer 8

1. 6” - 8”
2. 2” - 3”

Question 9

Secondary condensate line to terminate above a clear __________ (no obscure or glass block), extend past the pop out with a 90° elbow at the end.

Answer 9

window

Question 10

Run all ______________ lines separately.

Answer 10

condensation

Question 11

Condensate lines are to be run ____________ in the middle of the stud.

Answer 11

vertically

Question 12

No pipe __________ is to be left on any exposed concrete.

Answer 12

glue

Question 13

The condensate pan should slope _____” per foot.

Answer 13

1/4”

Question 14

What is the tolerance for construction material, or debris in the pan?

Answer 14

No tolerance

Question 15

All metal to metal duct connections are to be sealed with an approved ___________ type product to prevent air leaks.

Answer 15

mastic

Question 16

Flex duct is to be kept a min. of ______” from the roof sheeting.

Answer 16

2”

Question 17

Flex duct is to be secured every _____’.

Answer 17

4’

Question 18

Flex duct must retain ______% of the diameter of the duct.

Answer 18

80%

Question 19

Furnace flue pipes are to extend _____”-_______” above the roof tile to the bottom of the flue cap

Answer 19

12” - 24”

Question 20

Flue pipes above the roof line are to be plumb within a _____” per foot.

Answer 20

1/4”

Question 21

All furnace flue pipes and hot water heater B-vents are to have _________ collars.

Answer 21

storm

Question 22

All hood, dryer, and exhaust vents that terminate on an exterior wall are to be plumb & level. What is the tolerance?

Answer 22

No tolerance

Question 23

A sheet metal (insulation) barrier is to be installed around all hot water heater _________ pipes. The sheet metal barrier is to be approx. __________” in height and is to maintain a min. _______” clearance from any combustible material.

Answer 23

1. flue
2. 24”
3. 1”

Question 24

A ________” tall, sheet metal dryer box is to be installed directly on the bottom plate at all ________ locations.

Answer 24

1. 24”
2. dryer

Question 25

Keep all roof penetrations a min. of ________” from any hip, ridge, valley, other penetration, and a min. of _________” from any horizontal edge of roof sheeting.

Answer 25

1. 24" 2. 12"

Question 26

All penetrations through shear walls or roof sheeting must be ______-cut to avoid damage to the OSB. Do Not Blow Holes Through Sheeting.

Answer 26

Saw

Question 27

Both the liquid line (small pipe), and the suction line (large pipe) are to be wrapped with __________ insulation inside the wall cavity from the bottom plate to the top plate.

Answer 27

Armarflex

Question 28

The entire suction line (large pipe) from the condenser unit to the air handler is to be wrapped with ___________ insulation.

Answer 28

Armarflex

Question 29

The line-sets are to be supported or secured approximately every _______’ in the attic.

Answer 29

10'

Question 30

The wall jack where the line-sets stub out of the exterior wall should be secured to the bottom plate and wall studs at a min. of ______ of its 4 sides.

Answer 30

2

Question 31

The line-sets are to be sealed to the exterior wall jack with an approved ___________ or ______ __________ _____________.

Answer 31

1. caulking 2. UV resistant tape

Question 32

Line sets are to be Quick -______________.

Answer 32

flashed

Question 33

All HVAC penetrations in the rigid air barrier material to the exterior and/or unconditioned space are to be __________ cut, and be no more than _____” larger than the penetrating object (to allow for proper air sealing). Penetrations are to be completely air sealed with foam, caulk, or mastic (no fibrous insulation).

Answer 33

1. Cleanly 2. 1"

Question 34

All HVAC components are to be sealed at all joints & corners with a Shea Homes approved __________ (including all pre-fabricated joints).

Answer 34

mastic

Question 35

All metal ductwork is to be mechanically fastened with _________ (tape of any kind is not a mechanical fastener).

Answer 35

screws

Question 36

Flexible ducts are to be attached at the inner liner by first sealing the liner to the collar with mastic then using nylon/plastic __________ straps tightened with an approved manufacturer’s tool.

Answer 36

Panduit®

Question 37

All ductwork outside the conditioned air space (including exterior wall cavities) is to be completely insulated to a minimum ________. Insulation is to be strapped to the collars, and at duct to duct connections with tape or ___________ straps.

Answer 37

1. R-6 2. Panduit®

Question 38

Flexible duct is ________ to be in direct contact with either the roof sheeting or the sheetrock(ceiling).

Answer 38

not

Question 39

Flexible duct (including ventilation duct) is to be supported a minimum of every _____’ and have no bends greater than _____°.

Answer 39

1. 4' 2. 90 degrees

Question 40

Flexible ducts in _________________ space are not to be installed in cavities smaller than the outer duct diameter.

Answer 40

unconditioned

Question 41

Flexible duct in ____________ space are not to be installed in cavities smaller than the inner duct diameter.

Answer 41

conditioned

Question 42

A “Shea Family _________ ________ ________” fresh air ventilation system is to be installed, filtered ,and is to include a means of occupant control.

Answer 42

Fresh Air Intake

Question 43

The fresh air intake duct is to be insulated to a minimum R-6 and shall terminate to the ____________ of the home, and include a manual damper, or other means of occupant control.

Answer 43

exterior

Question 44

The fresh air intake duct is to be installed a minimum a _____’ from any exhaust vent, or plumbing stack.

Answer 44

10'

Question 45

The fresh air intake vent shall have a rodent/insect screen with ≤ ___” mesh.

Answer 45

1/2"