Nortec GS Series - Manual (Page 3)

Economy
NORTEC GS Series Gas Steam humidifiers
provide clean steam humidification at an
economical operating cost. Units are packaged
in a powder coated cabinet for zero clearance
space requirement while offering high efficiency
output. They can be controlled from either a local
humidistat, from the central building management
system or multiple units can be staged together.
The combustion system utilizes a modulating
forced draft combustion air blower, a negative
pressure regulator gas valve and a 100% premix
burner. On a call for humidity, the combustion
air blower starts creating a negative pressure
across the valve orifice located at the air inlet.
The hot surface ignitor then energizes. The gas
valve opens and the regulated gas/air mixture is
forced through the burner ports and is ignited.
Easy Maintenance
The compact stainless steel heat exchanger has
large flat surfaces to minimize scale buildup
in the humidifier tank. Scale tends to fall off
the exchanger wall to the bottom of the tank,
maintaining efficient heat transfer to the water and
extending the intervals between cleanings. The
smooth stainless steel surface of the tank and
removeable heat exchanger are easily cleaned and
maintained.
The GS SERIES compact heat exchanger design
provides a minimum footprint area where space
requirement is an issue.
operating advantages
Compact removeable heat exchanger.
105 lbs/hr of clean steam.
$/year
Operating costs based an electric cost of $0.08 per kWh, natural gas cost
$0.75 per therm, full output for 2,000 hours per season. Efficiency of
electric unit is 97% and efficiency of gas unit is 82%. Costs do not include
electric peak demand charges.
Annual
savings
with gas
$ 3,658
0
1000
2000
3000
4000
5000
6000
Electric
$ 5,443
Gas
$ 1,784
Annual Operating Cost of
Natural Gas Humidifier vs Electric Humidifier
100 lbs/hr (45 kg/hr)