Venting Installation Tips; Venting Configurations - Raypak HI DELTA 122-322 Installation & Operating Instructions Manual

Venting Installation Tips

Support piping:
· horizontal runs- at least every five (5) feet.
· vertical runs - use braces:
· under or near elbows
Follow items listed below to avoid personal injury or
property damage.
· Cut nonmetallic intake pipe with fine-toothed hack-
saw.
· Do not use nonmetallic intake pipe or fittings that
are cracked or damaged.
· Do not use nonmetallic intake fittings if they are
cut or altered.
· Do not drill holes, or use screws or rivets, in non-
metallic intake pipe or fittings.
To make metallic vent joints:
· Do not install seams of vent pipe on bottom of
runs.
· 100% Seal all joints and seams with high temper-
ature silicone sealant.
WARNING: Examine the venting system at least
once a year. Check all joints and vent pipe
connections for tightness, corrosion or deterioration.
NOTE: The words "Flue Exhaust", "Flue" and
"Exhaust Vent" are used interchangeably.

Venting Configurations

For heaters connected to gas vents or chimneys, vent
installations shall be in accordance with the section
Model
No.
122
162
202
242
322
**Vent lengths are based on a lateral length of 2 feet. Refer to the latest edition of the NFGC for fur-
ther details. (ANSI Z223.1)
Certified
Appliance
Venting
Category
Material
Type B or
I
Equivalent
Table J: Natural Draft Vertical Venting
on, Venting of Equipment, of the latest edition of
NFGC, or in Canada, B149 Installation Code for Gas
Burning Appliances and Equipment, or applicable pro-
visions of local building codes.
VENT PIPE
COMBUSTION AIR
FILTER
BOILER
UNIT
Fig. 18: Natural Draft Vertical Venting (Category I)
Min./Max. Venting
Minimum
Length without
Recommended
Vent Size (inches)
Damper (feet)**
4
5
6
25
10 FEET
OR LESS
VENT CAP
2' MIN.
2' MIN.
Barometric
5/25