Plumbing; Water Supply Connection - GeneralAire Elite Steam Manuel D'utilisation

3.3

Plumbing

3.3.1 Water Characteristic Requirements
The humidifier must be supplied with water with the following characteristics:
• pressure between 20psi and 110psi or 0.1 and 0.8 MPa (1 and 8 bar)
• temperature between 33°F and 104°F or 1°C and 40°C
• flow-rate minimum of 0.45 L/min or 0.21gpm
• hardness no greater than 40°fH (equal to 400 ppm³ of CaCO), conductivity: from 125 to 1250 μS/cm
• absence of organic compounds
• the characteristics of the water of supply must fall within the following limits:
LIMIT VALUES FOR LOW SALT CONTENT WATER
Hydrogen ions (pH)
Specific conductivity (R,20°C)
Total dissolved solids (c R)
Dry residue at 180°C
Total hardness
Temporary hardness
Iron + Manganese
Chlorides
Chlorides
Chlorine residue
Calcium sulphate
(*) Values dependent on the specific conductivity: in general: cR~=0.65*σR, 20°C; R180~=0.9*σR, 20°C
Note: There is no relationship between the hardness and conductivity of water.
Water Conductivity must be matched by specifications of the steam cylinder. Check or know the water conductivity of
the proposed site before installation. Replace the steam cylinder before startup if not correct. See Table 3.f right.
ELITE STEAM models
DS25, RS25, DS25LC, RS25LC, DS35, RS35
DS25, RS25, DS25LC, RS25LC, DS35, RS35
DS15P, RS15P, DS15, RS15
DS20A, RS20A
DS20A, RS20A
The following water types are not acceptable:
1. Softened water as this will lead to foam, electrode corrosion and greatly shortened
cylinder life.
2. Water containing disinfectants or corrosion inhibiters, as these are potential irritants.
3. Industrial water, boiler water or water from cooling circuits.
4. Any potentially chemically or bacteriologically contaminated water.
5. Heated water.

3.3.2 Water Supply Connection

We recommend the connection between the fill valve and the water supply line by a
soft poly hose capable of absorbing the water hammering in order to avoid damage to
the fill valve itself. The water line may be routed through the back or through the
bottom of the unit. With poly tubing, a tubing support must be used to prevent tubing
collapse and leaks. The fitting then threads onto the fill valve inlet located on the
bottom of the humidifier using a 3/4" G connection. Note that there is a strainer
built into the fill valve fitting underneath the unit, which will require periodic
cleaning, so be sure to allow clearance for access.
Elite Steam +030222075 Rev. 4.0 – 2 Mar. 2015
Units Min Max
7 8.5
μS/cm
300
mg/l (*) (*)
mg/l (*) (*)
mg/l CaC O 150 400
³
mg/l CaC O = 200
³
mg/l Fe + Mn = 0.2
ppm Cl = 30
mg/Si O = 20
2
mg/l Cl- = 0.2
mg/l CaS O = 100
4
Tab.3.d
Conductivity μS/cm
300-1250
125-425
125-1250
425-1250
125-500
LIMIT VALUES FOR LOW NORMAL WATER
Hydrogen ions (pH)
Specific conductivity (R,20°C)
Total dissolved solids (c R)
Dry residue at 180°C
Total hardness
Temporary hardness
Iron + Manganese
Chlorides
Chlorides
Chlorine residue
Calcium sulphate
Steam Cylinder
35-14
35-15
15-14
20-14A
35-14
Tab.3.f
Water drain outlet
9
Units Min Max
7 8.5
μS/cm
125 500
mg/l (*) (*)
mg/l (*) (*)
mg/l CaC O 0 200
³
mg/l CaC O = 150
³
mg/l Fe + Mn = 0.2
ppm Cl = 20
mg/Si O = 20
2
mg/l Cl- = 0.2
mg/l CaS O = 60
4
Tab.3.e
Fig. 3.g
Extension tube
Fill valve and filter
Fig. 3.h
Water drain