Installation
2
CODE COMPLIANCE
Maxi-Flo Heat Exchanger installation must conform with
the instructions in this manual and where applicable:
• Local, state, provincial, and national codes,
laws, regulations and ordinances.
LOCATING THE MAXI-FLO HEAT EXCHANGER
• The Maxi-Flo
®
is not intended for outdoor installa-
tion. The unit must be sheltered from direct contact
of rain and moisture.
• Keeping the distance between boiler and Maxi-Flo
®
to a minimum will:
- reduce piping heat loss
- provide minimal friction loss
• The Maxi-Flo
®
should not be located in an area
where possible water leakage will result in damage
to the appliance or to the surrounding structure.
It is recommend to install the Maxi-Flo
®
in an area at
or above the pool water level. Installing the Maxi-
Flo® in an area below the pool water level, such as a
basement, may result in extensive flooding of the area
and potential draining of the pool.
AUTOMATIC CHLORINATORS AND CHEMI-
CAL FEEDERS
• All chemicals must be introduced and completely
diluted into the pool or spa water before being cir-
culated through the heater.
• Do not place chlorine tablets or bromine sticks in the
skimmer. High chemical concentrations will result
when the pump is not running (i.e. overnight).
• Chlorinators must feed downstream of the unit and
have an anti-siphoning device to prevent chemical
back-up into the heat exchanger when the pump is
shut-off.
WARNING
High chemical concentrations from improperly
adjusted feeders and chlorinators can cause rapid
corrosion to the heat exchanger. Bypassing the heat
exchanger, is recommended, prior to stabilization of
pH at 7.2 to 7.8 level and chlorine residual at 1.0 to
3.0 ppm.
Equip the chlorinator with an anti-siphoning device
to prevent high concentrations of chloride from
siphoning back into the heat exchanger after the fil-
ter pump shuts off.
• The chlorinator should not operate unless the filter
pump is running.
• If the chlorinator is controlled by an independent
timer, ensure the timer is synchronized with the fil-
ter pump timer.
OPERATING RESTRICTIONS
• Maximum boiler water temperature is 230ºF.
• Maximum working pressure for Maxi-Flo
®
is 140
psig (primary and secondary) for stainless steel, and
425 psig primary and 70 psig secondary for titani-
um.
• Recommended water chemistry levels:
Free Chlorine . . . . . . . . . . . . . . . . . .1.0 - 3.0ppm
Bromine . . . . . . . . . . . . . . . . . . . . . .2.0 - 4.0ppm
pH . . . . . . . . . . . . . . . . . . . . . . . . . . .7.2 - 7.8
Total Alkalinity . . . . . . . . . . . . . . . . 60 - 120ppm
Calcium Hardness . . . . . . . . . . . . . . . .200 - 1,000ppm
Langelier Saturation
Index (S.I) . . . . . . . . . . . . . . . . . . . .(-)0.5 to (+)0.5
Cyanuric Acid . . . . . . . . . . . . . . . . .30 - 150ppm
Total Dissolved
Solids (TDS) . . . . . . . . . . . . . . . . . .< 1000 ppm
Copper . . . . . . . . . . . . . . . . . . . . . . .0ppm
Chloride . . . . . . . . . . . . . . . . . . . . . .140ppm
Salt Concentration . . . . . . . . . . . . . .80 ppm
• Water chemistry restrictions for Titanium Maxi-Flo:
Free Chlorine . . . . . . . . . . . . . . . . . .0 - 15ppm
Salt concentration . . . . . . . . . . . . . .0 - 10,000ppm
WARNING
NOTICE
