Install Instructions

General Filters
Incorporated
9 | P a g e
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 (Tables 3.c and 3.d):
Table 3.c. Table 3.d.
LIMIT VALUES FOR LOW SALT CONTENT WATER LIMIT VALUES FOR NORMAL WATER
Units
Min
Max
Units
Min
Max
Hydrogen ions (pH)
7
8.5
Hydrogen ions (pH)
7
8.5
Specific conductivity (R,20°C)
μS/cm
300
Specific conductivity (R,20°C)
μS/cm
125
500
Total dissolved solids (c R)
mg/l
(*)
(*)
Total dissolved solids (c R)
mg/l
(*)
(*)
Dry residue at 180°C
mg/l
(*)
(*)
Dry residue at 180°C
mg/l
(*)
(*)
Total hardness
mg/l CaC
³
O
150
400
Total hardness
mg/l CaC
³
O
0
200
Temporary hardness
mg/l CaC
³
O
=
200
Temporary hardness
mg/l CaC
³
O
=
150
Iron + Manganese
mg/l Fe + Mn
=
0.2
Iron + Manganese
mg/l Fe + Mn
=
0.2
Chlorides
ppm Cl
=
30
Chlorides
ppm Cl
=
20
Chlorides
mg/Si
2
O
=
20
Chlorides
mg/Si
2
O
=
20
Chlorine residue
mg/l Cl-
=
0.2
Chlorine residue
mg/l Cl-
=
0.2
Calcium sulphate
mg/l CaS
4
O
=
100
Calcium sulphate
mg/l CaS
4
O
=
60
(*) 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.e.)
Elite Steam Models
Conductivity μS/cm
Steam Cylinder
DS25LC
125-400
35-15
DS25
400-1250
35-14
DS15P
400-1250
15-14
The following water types are not acceptable:
1. Softened water (will lead to foam, electrode corrosion and greatly shortened cylinder life)
2. Water containing disinfectants or corrosion inhibiters (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
The fill valve and the water supply line should be connected by a soft ¼” poly hose
capable of absorbing water hammering in order to avoid damage to the fill valve. 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
threads onto the fill valve inlet located on the bottom of the humidifier using a 3/4” G
connection (supplied). Note: As there is a strainer built into the fill valve fitting
underneath the unit that requires periodic cleaning, be sure to allow clearance
for access (See Figure 3.d.).
Fill valve and filter
Water drain
Figure 3.d
Table 3.e.