Rinnai RHE1S40N, Инструкция по установке и эксплуатации, Страница: 23 / 56

23
HE Series Infrared Gas Heater Installation and Operation Manual
Vertical vent through the roof
: (Horizontal vent through side wall is on pages 20
-
21)
It is the sole responsibility of the installer to adhere to all current local codes and/or ANSI
Z223.1 latest editions for all venting requirements, and practices.
•
Refer to General Venting Requirements on page 19
•
Seal all vent connections with
high temperature sealant.
•
Any horizontal portion of vent must be mini-
mum 26 gauge single wall type
“ C ” vent
pipe of 4” (10 cm) diameter (seal all con-
nections); vertical portion of vent can be 4”
type “ B ” vent
•
When the vent pipe passes through a cold
or unheated area where the ambient tem-
perature is likely to result in condensation
of the flue gases, the vent pipe will be
type ‘ B ’ vent or insulated with a suitable
material as approved and specified by the
insulation manufacturer to withstand tem-
perature up to 460°F (238°C).
•
Use an approved ‘ B - vent ’ termination cap
as supplied by the manufacturer of the
listed ‘ B - vent ’.
•
Minimum length of a vertical roof vent:
•
Minimum 12 inch length (1 ft; 30 cm)
single wall ‘ C ’ vent
•
Plus one 90° “ C ” vent elbow
•
Plus minimum 36 inch (3 ft; 92 cm)
double wall ‘ B ’ vent
•
Total minimum linear vent length of 48
inches (4 ft; 122 cm)
plus one 90° ‘ C ’
elbow
•
Maximum length of a vertical roof vent:
• Above minimum requirements must be met
•
A maximum of one 90° elbow (equivalent 5 ft) plus two 45° elbows (each equivalent to
2.5 ft) can be installed in a vertical vent system
•
Refer to local and national codes for maximum allowable venting
Approved
Cap
Approved
‘ B ’ Vent
24”
60 cm
12
9
If roof slope exceeds 9:12
consult NFPA - 54 ANSI
Z223.1
FIGURE 12
Up
to
Minimum 12” (30 cm)
Length ‘ C ’ Vent
Minimum 36” (92 cm)
‘ B ’ Vent
90° ‘ C ’ Vent
Elbow
‘ C ’ to ‘ B ’ Adapter
Thimble
FIGURE 13