Nortec GS - Sealed Combustion Installation

41Installation
Nortec GS
2583703_EN_1608
5.7.2 Sealed Combustion Installation
A sealed combustion installation draws fresh combustion air from the outside. Sealed combustion re-
quirements for combustion air are governed by national and local installation codes, as stated at the
beginning of this section. The vent diameter listed in Table 15 must be maintained over the entire length
of the vent. Adhere to all local and national installation codes.
In addition, refer to "Sealed Combustion Installation Requirements" on page 42.
Table 15: Air Intake Vent Diameter
Model Intake Vent Diameter
GS 50 2 in (50 mm)
GS 100
GS 150
3 in (75 mm)
GS 200
GS 300
4 in (100 mm)
GS 450
GS 600
6 in (150 mm)
Figure 19 shows the sealed combustion connection for the compact and full-size Nortec GS humidiers.
Figure 19:
1
2
4
5
6
3 ft (1m) minimum
2
3
Nortec GS Sealed Combustion Connection
1 Terminal, air intake (elbow) – terminal located outside building and facing down (not supplied)
2 Vent, intake – wrapped with insulation (not supplied)
3 Inlet, intake air (full-size unit)
4 Access, maintenance (compact unit) – do not block
5 Inlet, intake air (compact unit)
6 Terminal, exhaust ("Tee") – terminal located outside building and opening vertical (not supplied)