Справочник Пользователя для Roberts Gorden CTH2-40 CTH2-60

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In noncombustible walls only, vent terminal 
(P/N 02537801-1P) may be used.

For 4''  (10 cm) vents in either combustible or 
noncombustible walls, use Tjernlund VH1-4 (P/N 
90502100) or equivalent insulated vent terminal. 
Follow the manufacturer's instructions for proper 
installation.

For 6''  (15 cm) common vents in either combustible 
or noncombustible walls, use  Tjernlund VH1-6 (P/N 
90502101) or equivalent insulated vent terminal. 
Follow the manufacturer's instructions for proper 
installation.

For 4'' (10 cm), an approved vent cap
(P/N 90502300) must be used.
For 6'' (15 cm) common vent, an approved vent cap 
(P/N 90502302) must be used.
For common vertical venting of more than two 
heaters, 

A vent shall not extend less than 2' (.6m) above the 
highest point where it passes through a flat roof of a 
building. 

Turndown type vent terminal with a screen must be 
installed at the exhaust end of the tube. Vent terminal 
design shall not incorporate backdraft flap.

The maximum vent length allowed is 45' (13.7 m). 
The maximum outside air supply duct length allowed 
is 45' (13.7 m).

The total vent length, plus outside air duct length, 
plus any extensions to minimum heat exchanger 
lengths, cannot exceed 65' (19.8 m). 

Vent length should be limited to less than 20' (6 m). If 
using vent lengths greater than 20' (6 m), 
condensation will form in the vent pipe. Insulation 
and additional sealing measures (high temperature 
silicone at all seams) are required. Optional heat 
exchanger beyond minimum lengths is considered as 
vent length for length determination.

Subtract 15' (4.6 m) of maximum allowed vent or duct 
length per vent elbow if more than two are used.

4" (10 cm)

Single Wall Pipe

Vent Adapter

Vent Terminal

Vent Adapter

18" (46 cm)

Min.

Vent Terminal

4" (10 cm) Single Wall Pipe

Vent Terminal (Comb. Wall)

90502100

Vent Terminal

02537801-XX