Gas Pressure Specifications; Venting - Nortec GH Series Instaliation, User & Maintenance Manual

NOTES:
1. FAILURE TO FOLLOW THIS PROCEDURE
MAY DAMAGE THE GAS VALVE. OVER
PRESSURED GAS VALVES ARE NOT
COVERED BY WARRANTY.
2. DO NOT use Teflon tape on gas line pipe
threads. A flexible sealant suitable for use
with Natural Gas and Propane Gas is
recommended.
3. Plan gas supply piping so it will not interfere
with removal of gas valves or blower
assemblies and front or side service doors.
GAS PRESSURE SPECIFICATIONS
INCHESW.C.
GAS MIN. MAX.
Natural 4.5 14.0
Propane/lP 11.0 14.0
The gas valve is provided with pressure taps to
measure gas pressure upstream and downstream,
(manifold pressure). The minimum gas pressure
shown is for the purpose of input adjustment.
A 1/8 11 NPT plugged tapping, accessible for test
gage connection, must be installed immediately
upstream of the gas supply connection to the
appliance.
VENTING
The vent pipe must be the same diameter as the
vent connector. See following chart for venting system
part numbers.
The maximum flue gas temperature at the
humidifier vent connector will not exceed 480°F. Use
only the special gas vents listed for use with Category
III or IV gas burning appliances, such as those listed in
the following venting system chart. (Listed to UL
Standard 1738 in the USA and ULC-S636 in Canada.)
All venting joints must be positively sealed with
high temperature RTV silicone sealant rated for at
least 480°F.
When venting a category IV appliance it is
necessary to provide for condensate removal in the
venting system. This provision may be met by using
the special drain tee as listed in the venting system
chart.
When a drain tee is used it is necessary to install a
trap in the drain to ensure that flue gases do not vent
into the drain. Install the trap with a 12" minimum
height of standing water column.
Prior to activating the appliance, ensure that the
trap is filled with water and that the drain terminates in
accordance with local plumbing codes.
For any vent lengths over 20 feet long, use
insulated vent.
Venting Systems Approved For Use With GH Series Humidifiers
Model Category Manufacturer
Vent Rigid Flex Vent Sidewall Drain Tee
Diameter Terminal
GH 100 III Flexmaster 3" 02SVEPXX03 22TL294C03 02SVSRTX03 02SVEDPS03
Z-Flex
GH 100 III Magnaflex 3" NA 03SSPLV 03SSHVT NA
GH 100
III
Flex L Int'llnc. 3" StaR-34 System StaFlex-294 SRTT-03 SRTDH-03
System
GH 200 IV Flexmaster 4" 02SVEPXX04 22TL294C04 02SVSRTX04 02SVEDPS04
GH400 Z-Flex
GH 200 IV Magnaflex 4" NA 04SSPLV 04SSHVT NA
GH 400
GH200 IV Flex L Int'llnc. 4" StaR-34 System StaFlex-294 SRTT-04 SRTDH-04
GH400
System
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