Pure Humidifier ES Series User Manual

9
Water Supply Piping
This style humidifier utilizes a Tri-Probe conductive-
type water control system that is designed for use
with standard (hard or softened) tap water. Use of
demineralized, deionized, or reverse osmosis water
will cause failure of the water level control system and
void the humidifier warranty.
Cold or hot standard tap water can be supplied to the
humidifier. A minimum water pressure of 35 psi (2.4
Bar) should be maintained to provide the proper water
level within the humidifier. If the water pressure is
above 95 psi (6.6 Bar), water hammer could occur
and a pressure reducing valve or shock arrester
should be used. The humidifier has a factory built-in
1.5” (4 cm) air gap between the water inlet and the
overflow. Local codes should be checked to see if
the addition of the vacuum breaking device is
required.
Drain Piping
The “ES” style humidifier requires one 3/4” SW
copper drain piping connection. The drain line should
be piped to a water seal as shown in the drain piping
illustration.
A water seal (as shown in the piping illustration)
should be installed to prevent steam from escaping
through the drain line. The water seal should be of
sufficient height to overcome the pressure developed
in the humidifier (reference water seal height table)
and the duct static pressure.
The drain piping should be copper or stainless steel.
The use of PVC piping is not recommended; the
humidifier temperature may cause the PVC to soften
and fail.
If gravity drain is not possible please use a
condensate pump rated for 212°F water or contact a
PURE Humidifier Co. representative to purchase one.
“H”
Water Seal
Open Sanitary
Drain
3/4” SW Copper
Drain Connection
SIDE VIEW
Heater
Assembly
Steam Outlet
Connection
1/4” - NPT Water
Inlet Connection †
† The humidifier has a 1.5” (4 cm) air
gap between the water inlet and
humidifier water level. Consult the
local code to determine if a vacuum
breaking device is required.
NOTES
1. All drain piping is by others.
2. Drain and overflow piping are factory
piped. One 3/4” SW copper drain
connection is required.
3. Do NOT use PVC or other plastic
piping that is not rated for 220°F or
higher.
∆ The water seal height may have
to be increased if excessive duct
static pressure exists.
Water Seal Height ∆
Total KW
3 thru 19.5
22 thru 33
39 thru 49.5
58.5 thru 102
"H"
8" (20 cm)
11" (28 cm)
17" (43 cm)
19" (48 cm)
Water Supply Piping
Resistivity (ohms) Conductivity (G or 1/R) Dissolved Solids (ppm)
<13K >77 umhos (min) approx. >40
Tri-Probe Sensor Water Requirements

Pure Humidifier ES Series Specifications

General

Brand	Pure Humidifier
Model	ES Series
Category	Humidifier
Language	English