Owner`s manual

4211-145 06-25-10
AK 17, 20, 30, 3K20, 3K24, 3K28 & 3K36
System Installation and Service Instructions
Page 8
1/2"
NPT
Sweat
Center
in
1/4"
1/4" 1-3/8"
Diameter
SPACER STUD
DIAGRAM 11 DIAGRAM 12
SECTION 4F: Water Quality Requirements
The nature of a boiler or steambath generator requires testing of the feedwater to avoid potential high concentrations of impurities which can
cause a deposit or scale to form on the internal surfaces. This deposit or scale can interfere with the equipments proper operation and even
cause premature boiler or generator failure. Concentration of impurities is generally controlled by treating the feedwater and or "blowing down"
the generator or boiler when it is not heating. The "blow down" process involves removing a portion of the tank water with high solid concentra-
tion and replacing it with makeup water.
To insure proper operation, the water supply should be tested prior to operating the equipment. There are several treatment processes which can
be used if you have a problem with hard water. A local reliable water treatment company can recommend the appropriate treatment if required.
The recommended feedwater quality is listed below.
Feedwater Quality
Hardness, ppm 10 - 30 (.5 - 1.75 gpg)
T-Alkalinity, ppm 150 - 700 (8.75 - 40.8 gpg)
Silica Range, ppm 15 - 25 (1.28 - 1.45 gpg)
PH (strength of alkalinity) 10.5 - 11.5
DIAGRAM 13
9"
min
9"
min
12"
min
from top
of tub or
18"
from floor
5"
min
9"
min
5"
min
5"
min
5"
min
3/8" FROM WALL
STEAM HEAD INSULATOR
STEAMHEAD FACE
FRAGRANCE
RESERVOIR
1-3/8" DIAMETER HOLE
1/2" NPT FITTING
FILL IN GAP USING
100% SILICONE CAULK