Nortec GS - Page 50

44 Installation
2583703_EN_1608 Nortec GS
– The exhaust vent must not exceed an equivalent length of 100 ft (30 m), except for the Nortec GS
50 using propane gas which is limited to 50 ft (15 m).
– The vent run should be as direct as possible with no more than six elbows in the system. Each 90°
elbow is equivalent to 10 ft (3 m), and each 45° elbow is equivalent to 5 ft (1.5 m) of straight pipe.
– Table 16 lists the diameter of the exhaust vent. The vent diameter must remain uniform over the entire
run. Adhere to all local and national installation codes.
Table 16: Exhaust Vent Diameter
Model Exhaust Vent Diameter Exhaust Outlet Size* Vent Type
GS 50-CS/NX 2 in 60 mm CPVC only
GS 100-CS/NX 3 in 80 mm BH or CPVC
GS 150-CS/NX 3 in 80 mm BH or CPVC
GS 200-CS/NX 4 in 100 mm BH or CPVC
GS 300-CS/NX 4 in 100 mm BH or CPVC
GS 450-CS/NX 6 in 150 mm BH or CPVC
GS 600-CS/NX 6 in 150 mm BH or CPVC
* The exhaust outlet on the unit has a female connection (metric). Each unit is supplied with a metric to imperial adaptor (with internal
seals) to accomodate imperial vent sizes.
Figure 20 on page 45 and Figure 21 on page 46 show the general types of venting arrangements. These
are guidelines only. For the specic venting arrangements refer to "Exhaust Vent Installation (CS/NX Model)"
on page 47. Adhere to all national or local codes.
Note: Figure 20 on page 45 and Figure 21 on page 46 show standard exhaust vent connections at the
exhaust outlet on the unit. Refer to "Exhaust Vent Installation (CS/NX Model)" on page 47 for the exhaust vent
connection for the CS/NX model.