27
GTS HUMIDIFIER LX SERIES INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
WARNING
Grounding
Installation must meet the requirements of governing codes or, in the absence of
governing codes, in accordance with the National Electrical Code, ANSI/NFPA
70, or Canadian Electrical Code, CSA C22.1, or IEE wiring regulations (BS7671).
The electrical subpanel must have an uninterrupted or unbroken ground to minimize
personal injury if an electrical fault should occur. This ground can consist of electrical
wire or conduit approved for electrical ground when installed in accordance with
existing electrical codes. Do not use gas piping as an electrical ground.
• GTS humidifiers must be supplied with 120 Vac, 60 Hz (North American
models) or 230 Vac, 50 Hz (European models) separately fused electrical
service. The GTS humidifier is equipped with transformers to step down the
voltage to 24 Vac control voltage.
• When installed, the GTS humidifier must be electrically grounded in
accordance with governing codes or, in the absence of governing codes,
in accordance with the National Electrical Code, ANSI/NFPA 70; or
Canadian Electrical Code, CSA C22.1; or IEE wiring regulations (BS7671).
• In North America, the electrical conductors shall be Type MTW (105 °C)
AWG #14 (2.5 mm
2
) wire for 120 V line voltage , with BLACK WIRE
for HOT, WHITE WIRE for NEUTRAL, GREEN AND YELLOW WIRE for
GROUND. Units with Outdoor Enclosure must use AWG #12 (4 mm
2
) for
120 V line voltage. Use #18 gauge (1 mm
2
) for control wiring.
• In Europe, the electrical conductors shall be Type MTW (105 °C) 2.5 mm
2
wire for line voltage (230V), with BLACK WIRE for LINE, BLUE WIRE for
NEUTRAL, GREEN AND YELLOW WIRE for GROUND, and 2.5 mm
2
wire
for control wiring.
• All electrical components and wiring must be protected from mechanical
damage and water. The control system requires an earth ground for proper
operation.
• The GTS humidifier is adjusted for correct performance at the factory. Only
a qualified gas appliance technician may alter throttle setting.
• Check the electric current characteristics and capacity requirements against
the nameplate. All wiring must be in accordance with all governing codes
and with the GTS wiring diagrams located inside the control cabinet. See
the electrical specifications in Table 11-1 (North America) and Table
• Refer to the
Vapor-logic Installation and Operation Manual
for additional
information on the controller furnished with this GTS humidifier.
Wiring
INSTALLATION
WARNING
Fire hazard
Do not connect aluminum wire between
disconnect switch and humidifier. Use
only copper wire. Failure to follow
these instructions could cause a fire,
resulting in severe bodily injury, death,
or significant property damage.
