19
GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Outdoor enclosure
GENERAL DESCRIPTION
• The outdoor GTS is CSA/ETL approved for installation outdoors. It uses an
optional heater and fans to properly operate in operating temperatures of
-40 ºF to 122 ºF (-40 ºC to 50 ºC). The unit is intended to be mounted on
a concrete pad or rooftop curb. Properly sized curbs are available from
DriSteem.
• The knockouts located on the front of the unit are used to run electrical
power and gas to the unit. There is a pipe chase located inside the
enclosure that is used for both the supply water and drain piping. Supply
water and drain piping will need to come through the knockouts at the front
of the unit if the chase cannot be used. Combustion air is drawn from within
the enclosure, and flue gas is vented out the back of the enclosure.
• An emergency drain is provided on the front of the unit. In case of a water
leak, water drains onto the roof through this emergency drain. The drain is
intended to have a field installed water seal.
• If constant monitoring of the unit is desired, or if the unit is located in a
severe climate, install a remote mount display. Additional cable lengths up
to 500’ (152 m) are available as an option.
• In cold climates, Freeze Protection Piping (see page 25), is an important
component to the proper operation of the outdoor humidifier.
Steam outlet to
rooftop AHU
dispersion
Gas piping
Electrical
connections
Fill
Drain piping
OM-8004
INSTALLATION
Overview
FIGURE 19-1: OUTDOOR ENCLOSURE TYPICAL INSTALLATION OVERVIEW
Flue vent
Pipe chase
Flue condensate drain
