Further advice should be obtained from your pool or spa builder, accredited pool shop, or chemical suppli- er for the correct levels for your water.
Automatic Chlorinators and
Chemical Feeders
All chemicals must be introduced and completely dilut- ed into the pool or spa water before being circulated through the heater. Do not place sanitizing chemicals in the skimmer. High chemical concentrations will result when the pump is not running (e.g. overnight).
Chlorinators must feed downstream of the heater and have an
High chemical concentrates from feeders andNOTE:chlorinators that are out of adjustment will cause rapid corrosion to the heat exchanger. Such damage is not covered under the warranty.
NOTE: Failure of a heat exchanger due to lime scale
Gas Supply
DANGER: Make sure the gas on which the heater will operate is the same type as specified on the heater’s rating plate.
Gas piping must have a sediment trap ahead of the heater gas controls, and a manual
Gas Supply Connection
CAUTION: The heater must be disconnected from the gas supply during any pressure testing of the gas supply system at test pressures in excess of 1/2 psi (3.45 kPa).
The heater must be isolated from the gas supply pip- ing system by closing the upstream manual
TO FOLLOW THIS PROCEDURE MAY DAMAGE THE GAS VALVE.
Fig. 17: Gas Supply Connection
CAUTION: Do not use Teflon tape on gas line pipe thread. A pipe compound rated for use with natural and propane gases is recommended. Apply sparingly only on male pipe ends, leaving the two end threads bare.
CAUTION: Support gas supply piping with hangers, not by the heater or its accessories. Make sure the gas piping is protected from physical damage and freezing, where required.
Gas Supply Pressure
A minimum of 4.0 in. WC and a maximum of 10.5 in. WC upstream gas pressure is required under load and
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