Installation
3
GENERAL PIPING
• Typical pool or spa piping is plumbed as follows
(see Figures 1 & 2):
- Inlet of the filter is piped directly to the dis-
charge side of the filter pump.
- Outlet of the filter is piped to the inlet side of the
Maxi-Flo
®
heat exchanger.
- The return line to the pool, spa or chlorinator is
piped to the outlet of the Maxi-Flo
®
heat
exchanger.
• Standard plastic pipe (PVC) should not be connect-
ed directly to the Maxi-Flo
®
heat exchanger.
- Install stainless steel nipples (available from
Triangle Tube) between the heat exchanger and
any plastic piping. Check local codes for con-
formity. Does not apply to the MF-135 and MF-
260T.
- Install high temperature plastic pipe (CPVC) nip-
ples between the heat exchanger and any plastic
piping on MF-135T and MF-260T models.
• In lieu of stainless steel nipples installer may use
high temperature plastic pipe (CPCV). Check local
code for conformity. Applies to all Models.
• Ensure all threaded connections are properly sealed
with piping compound suitable for high temperature
and pool applications.
• The MF-135, MF-200, MF-260 and MF-400 should
be mounted in a vertical position to prevent entrap-
ment of air.
• The MF-80, MF-135T and MF-260T may be mount-
ed in a horizontal or vertical position.
• The MF-135T and MF-260T requires the use of rub-
ber couplings to aid in sealing the pool piping/heat
exchanger connection. See Fig. 4 page 7.
RECOMMENDED TEMPERATURE
• Swimming pool water temperature of 80ºF
- US Swimming Rules and Regulations require
pools for competition, water temperature must
be at 78º to 80ºF.
• Spa and tub water temperatures should not exceed
104ºF.
Water temperatures in excess of 104ºF is considered
unsafe for all persons. Lower temperatures are rec-
ommended for extended use (exceeding 10 to 15 min-
utes) and for young children.
MAXI-FLO WIRING
Electrical shock hazard. Can cause severe personal
injury, death or substantial property damage.
Disconnect power before installing and/or servicing.
General
• All line voltage wiring must be a minimum of 14
gauge and installed in accordance with:
- USA - National Electrical Code ANSI/NFPA 70
- latest edition and any other national, state or
local code requirements having jurisdiction.
- Canada - C.S.A. C22.1 Canadian Electrical
Code Part 1 and any other national, provincial
and local code requirements having jurisdiction.
• For recommended Maxi Flo control wiring, see
Figure 3.
- For availability of the Tekmar 150 Temperature
Controller contact the nearest Triangle Tube rep-
resentative.
- For availability of the McDonnell & Miller FS4-
3 flow switch contact the nearest ITT represen-
tative.
WATER CHEMISTRY
Pool
• The mineral content of the pool water will increase
daily due to natural evaporation and addition of algi-
cidal and sanitizing chemicals. This increase in min-
eral content may cause damage to the heat exchanger.
Spa
• The size, higher temperature and heavy usage can
create various chemical levels.
WARNING
CAUTION
