Vents And Chimneys Ap

Front 1

Single wall vent connector gage

Back 1

28 gage smaller than 6"

Front 2

If portions of vent connector have no dilution air min gage of

Back 2

24

Front 3

Incinerator min gage

Back 3

20 gage for vent connector

Front 4

Aluminum vent connectors

Back 4

-22 B&SG (Brown and sharp gage)

-3“-5“

Front 5

Single wall vent connector min clearance from combustibles

Back 5

6"

Front 6

Type B vent min clearance from combustibles

Back 6

1"

Front 7

Can a single wall vent connector pass through floor or ceiling?

Back 7

No

Front 8

When is the ONLY time a single wall vent connector may pass through a wall?

Back 8

If protected with ventilated thimble

Front 9

Vent must be ___ higher than a roof, and ___ higher than any obstruction within ___?

Back 9

1) 2 ft

2) 2 ft

3) 10 ft

Front 10

Chimney must be ___ higher than a roof, and ___ higher than any obstruction within ___?

Back 10

1) 3 ft

2) 2 ft

3) 10 ft

Front 11

Vent terminating and passing through wall must be ___ above grade?

Back 11

1 ft

Front 12

What is BH vent

Back 12

Is CPVC mus be system s-636 certified

Has positive vent pressure

Front 13

BH vent must be ___ higher than a roof, and ___ higher than any obstruction within ___? Aka special venting system

Back 13

1) 18"

2) 18"

3) 18"

Front 14

ROT for sizing single appliance vent

Back 14

Vent connector and vent, same size appliance flu collar or draft hood outlet

Front 15

ROT for sizing single appliance for chimney

Back 15

Vent connector same size as appliance flue collar or draft hood outlet. Chimney is one size larger

Front 16

ROT sizing for tro or more appliances for vent

Back 16

Vent connector for each appliance same size as appliance flue collar or draft hood outlet.

Vent are sized by taking all the areas of largest vent then adding half the area of the rest

Front 17

ROT sizing for two or more appliances for chimneys

Back 17

Vent connector for each appliance same size as appliance flue collar or draft good outlet

Chimney area sized by using area of largest vent than adding half the area of the rest

Front 18

Min size of vent

Back 18

-3" diameter

-apply to catagory I apiances only other appliances are sized by manufacturers code

Front 19

Direct vent appliances uses what kind of vent pipe arrangement

Back 19

Coaxial pipe: vents products of. Combustion through a pipe inside another pipe that brings combustion air

Ex. Decorative fire place

Front 20

Direct vent appliances below grade may use a ___ fitting

Back 20

Snorkel fitting

Front 21

How high above finished grade must vent be?

Back 21

12"

Front 22

Power assisted vents

Back 22

Vents that once been connected to B vent to vent though the roof. They have ben modified to vent through a wall.

Front 23

Only plastic pipe allowed for use today for venting

Back 23

S-636

*first 3ft of vent pipe must be vissible

Front 24

Only auto damper allowed to be added to appliance is ____, other whose it must come with it installed

Back 24

Thermal activated

Front 25

Are manual dampers permitted in a venting system?

Back 25

No

Front 26

Vents with psoitve vent pressure( catigorie III & IV) must run independently to outdoors

Back 26

True, may not be connected together

Front 27

Can a vent with positive vent pressure be connected to any natural draft vent (type B) or to a venting system for draft hood equipped appliances?

Back 27

No

Front 28

Drafthoods / draft control devices are used to maintain

Back 28

Steady negative pressure

Front 29

Draft control devices include

Back 29

Draft hoods and draft regulators smlike the barometric type

Front 30

What's a barometric draft regulator

Back 30

-Like draft hoods

-Relife opening has floating plate or gate that constantly adjust amount of dilution air, maintain desired vent pressure

Front 31

Three basic draft hood designs

Back 31

-Verticle

-horizontal

-horizontal and verticle (angle)

Front 32

Single acting baromateic regulator:

Back 32

-gate swings inward only on negative pressure

-used in solid fuel burning apications

Front 33

Double acting baromateic regulator

Back 33

- gate swings inwards AND outward depending on vent pressure

-used in converted appliances

Front 34

Does a mid and high efficiency appliance have a draft control device?

Back 34

No

Front 35

Main function of draft hood

Back 35

-allows escape of flue gas under abnormal vent conditions

-prevent back draft from enterinf combustion chamber

-neutralizes excessive stack action

-dilutes products of combustion

-Helps room vent

Front 36

GSG stands for

Back 36

Galvanized steel gage

Front 37

When can vent connector be type B

Back 37

Where extreme vent connector cooling and condensation is a problem

Front 38

Vent grade

Back 38

1/4“ per ft

Front 39

Combustible surface temps max

Back 39

194 degrees F

Front 40

Vents passing through wall need ventilated thimble __ or larger in diameter than vent.

Back 40

-4"

-needed when distance from appliance to pen point is less than 6 ft

Front 41

Vents passing through wall need ventilated thimble __ or larger in diameter than vent.

Back 41

-2"

-needed when distance from appliance to pen point is 6 ft or greater

Front 42

Dampers in vent connectors may be

Back 42

Thermal operated type

Front 43

Manifold sizing/common vent

Back 43

Area all vents, add total than square root

Round up for pipe size if need

Front 44

Can you use rule of thumb sizing method for sizing fan assist

Back 44

-no

-only for natural draft appliances

Front 45

Where should the smallest sized vent connector be connected to a a vent or chimney

Back 45

At the top, above all larger vents. Same applies for fan assist. However if both fan must be lowest connection

Front 46

Can a B vent pass through wall

Back 46

Yes

Front 47

Air tight building refered to as

Back 47

Type A bldg

Front 48

Loose building reford to as

Back 48

Type B bldg

Front 49

Min size masonry chimney

Back 49

12“ sq

Front 50

Where can appliance in a commercial kitchen be vented to

Back 50

Exhaust canopy

Front 51

Catagory I appliance

Back 51

- operates with a non-positive vent pressure and is with a vent gas temperature of at least 140F above its dew point

-all draft hood equipped appliances, all fan assist labelled as cat 1 and all appliances certified for venting into b vent

Front 52

Catagory II appliance

Back 52

-operates with a non-positive vent pressure and with a vent gas temperature less than 140 F above dew point

-measured at entrance of venting system 300F

Higher efficiency apiances than catagory I

-still has slight negative pressure in the venting system

Front 53

Catagory III appliance

Back 53

-operates with positive vent pressure and with a vent gas temp Atleast 140F above dew point

-measured at entrance to the vent systen

-non condensing type appliance usually 3" plastic, 3" ss venting system

-may have some condensation so vent needed

Front 54

Catagory IV

Back 54

-operates with positive vent pressure and vent gas temp less than 140F above dew point

-measured at the entrance to venting system

-condensing high efficient appliance usually have 2" plastic venting system and a drain

Front 55

Vent terminate

Back 55

-7ft from driveway / paved sidewalk public prop

-6ft from mech air supply inlet to any building

-above regulator: 3ft from center and 16 ft up

Front 56

Flue gass discharge opening for outdoor pool heater shall terminate no less than ___ ft from any building opening.

Back 56

10ft