Installation Manual
23
HE Series Infrared Gas Heater Installation and Operation Manual
: (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
•
• 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
Up
to
Minimum 12” (30 cm)
Length ‘C’ Vent
Minimum 36” (92 cm)
‘B’ Vent
90° ‘C’ Vent
Elbow
‘C’ to ‘B’ Adapter
Thimble