STA-RITE 200K BTU/HR Owner's Manual page 17

WATER FLOW RATE
Maximum and minimum water flow rates required by the
heater are listed below:
Table 8: Maximum and Minimum
Flow Rate in GPM (LPM)
Model Minimum Flow
200
333
400
If the water flow rate to the heater is above 120 GPM (454
LPM), it must be reduced by installing a manual bypass valve
(Figure 17). After installing the valve, adjust the valve to bring
the flow rate within the acceptable range. Then remove the
valve handle or lock it in place to prevent tampering.
Occasionally a two-speed pump will not develop enough
pressure on the low speed to operate the heater. In this
case, run the pump at high speed only to operate the
heater. If this does not solve the problem, do not try to run
the heater. Instead, correct the installation.
Do not operate the heater while an automatic pool cleaner
is also operating. If the circulation pump suction is plugged
(for example by leaves), there may not be adequate flow to
the heater. Do not rely on the pressure switch in this case.
WATER CHEMISTRY
Water chemistry should follow good swimming pool water
chemistry practices. See Table 9 (below) for water chem-
istry parameters.
When using a chlorinator, install it downstream from the
heater and at a lower level than the heater outlet. Install a
corrosion resistant positive seal check valve (see Figure 15)
between the heater and the chlorinator to prevent concen-
trated chemicals from back-siphoning into the heater.
Back-siphoning is most likely to occur when the pump
stops, creating a pressure-suction differential.
Table 9: Water Chemistry Parameters
Disinfectant levels
Free Chlorine, ppm
Combined Chlorine, ppm
Bromine, ppm
Other Sanitizers
Chemical Values
pH
Total Alklinity (Buffering), ppm
as CaCO 3
Total Dissolved Solids, ppm
Calcium Hardness, ppm, as CaCO 3
Heavy Metals
Biological Values
Algae
Bacteria
NOTICE: Failure to adhere to the listed water chemistry parameters may result in premature failure of the heat exchanger
and will void the warranty.
*Start-up TDS includes source water TDS and any other inorganic salt added at start-up.
Maximum Flow
20 (76) 120 (454)
33 (125) 120 (454)
40 (152) 120 (454)
Minimum
Levels not established. Consult local health department before use.
Do NOT sanitize the pool by putting chlorine tablets or
sticks into the skimmer(s). When the pump is off, this will
cause a high concentration of chlorine to enter the heater,
which could cause corrosion damage to the heat exchanger.
2680 1096
FIGURE 17: Manual bypass valve
1.0 2.0-4.0
None
2.0
7.2 7.4-7.6
60 80-100
N/A
150 200-400
None
None
None
17
Warm Water Out
1. Set Manual
Bypass Valve
2. Remove handle
Ideal Maximum
None
4-6
N/A 1,500 ppm > TDS at startup*
500-1,000
None
None
None Refer to Local Code
Cool Water In
Outlet to
Pool
Inlet from
Filter
10.0
0.2
10.0
7.8
180
None
None