Specifications

Installation & Maintenance Manual__________
10
3.2 Drain Line
The drain water connection requires a piece of 1 ½” ID rubber hose. It must be able to handle a water
temperature of 212ºF. The rubber hose should be secured using a standard hose clamp – be careful not to
over-tighten and crack the drain fitting. If CPVC or copper pipe is used, adapt to the drain fitting with 1 ½” ID
rubber hose.
Insulate the drain line and make sure it has at least a 5 deg. slope to the drain.
WARNING: Drain water can be up to 212 °F.
.
IMPORTANT WARNING: The water drain must be free of obstructions, without backpressure and
terminate in an open drain.
3.3 Gas connection
Installation piping must be in accordance with local codes, and ANSI Z233.1, “National Fuel Gas Code”,
in the United States or CAN/CGA-B149 Installation Codes in Canada.
Should overheating occur, or the gas supply fails to shut off, shut off the manual gas valve to the
appliance before shutting off the electrical supply
The gas inlet pipe sizes are as follows: UG045 – ½” Male Gas thread, UG090 – 1” Male
Gas thread.
The gas connection may either be made by piping directly to the gas inlet, or by using the supplied flexible,
vibration dampening pipe.
The appliance must be isolated from the gas supply piping system by closing its individual manual shut-off
valve during any pressure testing of the gas supply system at test pressures equal to or greater than 14” w.c. (
½ psig,3.5 kPa)
Provide an adequate size gas supply line.
A 1/8-inch NPT plugged tapping, accessible for test gage connection, must be installed immediately upstream
of the gas supply connection to the appliance.
When specified by codes, a sediment trap must be located ahead of the humidifier gas controls.
The external shut-off gas valve, supplied with the unit, must be installed outside of the unit.
NOTE: You must provide support to the gas connection during hookup to avoid
loosening internal connections of the gas line!
WARNING:
Never use an open flame to check for gas leaks. If a leak does exist, a fire or explosion could
occur, resulting in damage, injury or death.
The appliance and its individual shut-off valve must be disconnected from the gas supply piping system during
any pressure testing of that system.
Dissipate test pressure from the gas supply line before reconnecting the humidifier and its manual shut off
valve to the gas supply line.
Gas Valve supplied with the unit
Installation/materials from gas supply to shut-off valve and
from the shut-off valve to the unit are not supplied.
Sediment trap