Davey POOL AND SPA GAS HEATERS - Manual (Page 11)

Part No: 96131430D 11 Rev: 2
8. Turn off the pump and the heater should now go out. If the heater does not go out, the heater must be turned off immediately
and Davey should be contacted.
9. The pump should be cycled on and off several times to ensure that the adjustment is correct.
Voiding Warranty as a result of Incorrect Chemical Dosing
All Davey heaters must be installed after the pool/spa system pump and prior to any chemical dosing or chlorination system.
Chemical dosing or chlorination systems must be located as far from the heater as possible and a backflow prevention device must
be installed between the heater and such systems.
Ideally any chemical dosing system should also be installed below the water connection level of the heater.
Installation above this level may lead to chemical seepage back into the heater even with a backflow prevention device. This will
result in damage to the heat exchanger and will void warranty.
Caution! Chemicals that are allowed to enter the heater without having first passed through the pool or spa will damage the heat
exchanger of the heater and consequently will void warranty.
Never add chemicals to the skimmer box, leaf basket, or near the return line from the pool to the heater.
Water Connections
Davey heaters with Polymer headers are designed for direct connection to PVC pipe. Use only Class 12 PVC fittings or better.
Davey Premium heater models 127 and 167 with Bronze headers must be connected to PVC pipe. Use only Class 12 PVC fittings
or better.
Water Flow
Correct flow rate of water to the heater is critical for correct operation.
Davey heaters are fitted with an internal by-pass to redirect excessive water flow however should the flow rate exceed that given in
the table below; an external PVC type by-pass valve must be fitted. Setting of the valve must be done at the time of commissioning.
Caution! Sooting caused by incorrect setting of a by-pass valve or failure to fit a by-pass valve when required will void warranty.
The Davey heater must be commissioned by the installer prior to normal operation or handover. Installation or connection of the
heater to the gas supply by unqualified trades’ persons will void warranty.
The installer must also supply the owner with a compliance certificate at the completion of commissioning.
Min/Max Flow Rates
Model Min. l/s Max. l/s
131 1.3 6.9
127 1.0 3.7
167 1.0 3.9
200 1.3 6.9
280 1.6 6.9
350 2.3 6.9
430 2.5 6.9