Pentair Pool Products MASTERTEMP 250K BTU/HR Installation And User Manual page 17

Warm water out
1. Set Manual Bypass Valve
2. Remove handle
FIGURE 16: Manual bypass valve
Verify proper operation of the water pressure switch at
the start of every season and every six months thereafter
by the following steps:
1. Lower the thermostat setting to turn off the heater.
2. Wait at least 15 minutes after the burner is off, and
then turn off the filter pump.
3. Turn up the thermostat as though to fire the burner.
4. Wait one minute. The "Service System" light should go
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.
Cool water
Outlet to pool
Inlet from pool
Minimum
1.0
None
2.0
Levels not established. Consult local health department before use.
7.2
60
N/A
150
None
None
None
on but the burner should not fire and the blower
should not start. If the blower or burner do start, or if
the "Service System" light does not go on, there is a
pressure switch malfunction. Immediately press the
OFF button on the operating control to turn the burner
off and call a qualified service technician to check the
system.
Live steam hazard. If the Burner and the
CAUTION
Pump stop at the same time, wait at least 15 minutes
before starting the filter pump to avoid severe damage to
the heater.
Water
pressure
switch
FIGURE 17: Remove side panel for access to Water
Pressure Switch
Ideal
2.0-4.0
None
4-6
7.4-7.6
80-100
N/A
200-400
None
None
None
17
Maximum
10.0
0.2
10.0
7.8
180
1,500 ppm > TDS at startup*
500-1,000
None
None
Refer to Local Code