47
GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
GUIDELINES
• The GTS is a Fan Assisted Category IV (condensing, positive pressure)
Appliance.
• Maximum flue temperature is 140 °F (60 °C).
• Vent piping must be UL or UL/CSA listed PVC, CPVC, polypropylene or any
other vent type approved for a Category IV appliance.
• Follow supplier fitting and cement/primer instructions to ensure proper fit,
adhesion, and assembly.
• Clean and seal inlet piping per the pipe manufacturer's recommended
solvents and cements. Follow manufacturer's recommended procedures
for pipe and fitting preparation, cutting and attachment with appropriate
solvents and cements for the material.
• Insulate sealed combustion piping to avoid dripping from condensation.
• Do not use vent equipment from more than one application/manufacturer.
• Do not insulate the flue vent piping.
• Installation must be in accordance with Part 7, Venting of Equipment, of
the National Fuel Gas Code, ANSI Z223.1; or Section 7, Venting Systems
and Air Supply Appliances, of the CAN/CGA B149 Installation Codes; or
National Gas Safety Code (Installation & Use) Regulations (latest revision);
governing codes, and the vent manufacturer’s instructions.
General venting (continued)
Note:
For European models, contact your distributor
for horizontal venting parts.
INSTALLATION
WARNING
Installation requirements
The humidifier must be installed by
a qualified technician and meet the
requirements of all governing codes.
Failure to follow these instructions could
cause severe bodily injury or death.
WARNING
Installation requirements
Failure to properly seal all joints and
seams as required in the air inlet piping
may result in flue gas recirculation,
spillage of flue products and carbon
monoxide emissions causing sever
personal injury or death.
Table 47-1:
Approved PVC/CPVC flue gas vent pipe and fittings
Item
Vent material
United States
Canada
Piping
PVC
ANSI/STM D2665
IPEX system
1738
ULC S636
PVC, Sch. 40
ANSI/ASTM D1785
PVC, SDR series
ANSI/ASTM D2241
CPVC, Sch. 40
ANSI/ASTM F441
CPVC, SDR series
ANSI/ASTM F422
Fittings
PVC, DWV, Sch. 40
ANSI/ASTM D2665
PVC, Sch. 40
ANSI/ASTM 2466
PVC, Sch. 80
ANSI/ASTM 2467
CPVC, Sch. 40
ANSI/ASTM F438
CPVC, Sch. 80
ANSI/ASTM F439
Cement,
primer
PVC
ANSI/ASTM D2564
CPVC
ANSI/ASTM F493
Note: Do not use cellular (foam) core PVC, DWV pipe, ASTM F891, or cellular core CPVC or
RADEL (Polyphenylsulfone).
Table 47-2:
Approved vent manufacturers
Item
Manufacturer
Polypropylene
Centrotherm Eco Systems*
DuraVent (M&G Group)
Stainless steel
DuraVent (M&G Group)
Z-Flex
Heat Fab
Metal Fab
Security Chimney
* For 2", 3", and 4" vent pipe only.