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  3. Weil McLain Maxi-Flo Pool Heater WMPH-135, 200, 260 & 400

Weil-McLain Weil McLain Maxi-Flo Pool Heater WMPH-135, 200, 260 & 400, Swimming Pool Heat Exchanger Operating instructions

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Due to the high temperature at the heat exchanger connections, we recommend
installing a stainless steel nipple (10.00" long) on the pool supply and return lines.
Seal all threaded connections with an appropriate pipe dope. Perform a leak test
to verify all joints.
1. Maxi-Flo Heat Exchanger
2. Boiler
3. Boiler Water Circuit
4. Thermostat or Aquastat
5. Gate Valve
6. Check Valve
7. Circulators
8. Pool Water Supply
9. Filtration
10. Pump
11. Relay
12. Flow Switch
13. Thermometer
14. Drain Valve
15. On/Off Switch
16. Flow Control Valve
5
From the pool
11
8
1
12
15
5
5
13
4
9
10
5
13
6
115V
16
To the pool
Heating zones
return
Heating zones
supply
16
7
7
16
2
3
Stainless Steel
PVC
Stainless Steel
Stainless
Steel
MAXI-FLO
SWIMMING POOL HEAT EXCHANGERS
Model WMPH-135, 200, 260 & 400
636-000-041/0309
SUGGESTED INSTALLATION
Chlorinators must feed downstream of the heat exchanger and have
an anti-siphoning device to prevent chemical back-up in the heat
exchanger when the pump is shut off.
High chemical concentrations from improperly adjusted feeders
and chlorinators can cause rapid corrosion to the heat exchanger.
We recommend bypassing the heat exchanger while adjusting water
chemistry. Stabilize chemistry to a pH of 7.2 – 7.8, with chlorine
residual at 1.0 to 3.0 ppm.
Damage to the heat exchanger due to improper water chemistry
(including but not limited to salt water or brine applications) is
not covered under the warranty.
WARNING
Automatic chlorinators and chemical feeders
This is only a concept drawing. Engineers must determine whether this system will work in each application and must ensure compliance with code requirements.
5
PVC
14
/