Lochinvar F0600187510 Relief Valve, Automatic Chlorinator and Chemical Feeders, Water Flow Switch

Installation and Service Manual

MODEL NO.	BYPASS PIPE SIZE
CP (N,L) 501 - 751	2” MINIMUM
CP (N,L) 991 - 2071	2 1/2” MINIMUM
	ALTERNATE POOL
	RETURN SENSOR	FROM FILTER
	LOCATION

OPTIONAL
POOL SUPPLY	4" CPVC
SENSOR LOCATION

3'	FLOWMETER
MINIMUM
110° LIMIT
	4" CPVC
TO POOL	FACTORY POOL
	RETURN SENSOR
	LOCATION

RECOMMENDED

ISOLATION VALVE

COPPER OR CPVC

(SEE TABLE)

Figure 38 - Multi-Stack Frame - Heaters are Beyond 15 feet from Pool Piping

Relief Valve

This pool heater is supplied with a relief valve(s) sized in accordance with ASME Boiler and Pressure Vessel Code, Section IV. The relief valve(s) is installed in the vertical position and mounted in the hot water outlet. Place no other valve between the relief valve and the pool heater. To prevent water damage, pipe the discharge from the relief valve to a suitable floor drain for disposal when relief occurs. Do not install any reducing couplings or other restrictions in the discharge line. The discharge line will allow complete drainage of the valve and line. Manually operate the relief valves at least once

ayear.

￿CAUTION: Avoid contact with hot discharge water.

Automatic Chlorinator and Chemical Feeders

All chemicals must be diluted into the pool water being circulated through the pool heater. Any concentration of chlorine in the pool heater can cause damage to the pool heater.

Do not place chlorine tablets or bromine sticks in the skimmer. High chemical concentrations will result when the pump is not running.

Chlorinator must feed downstream of the pool heater and have an anti-siphoning device to prevent chemical back-up in the pool heater when the pump is shut off.

IMPORTANT: High chemical concentrations from im- properly adjusted feeders and Chlorinator can cause rapid corrosion to the heat exchanger. This damage is non-warrantable.

Water Flow Switch

A water flow switch is standard equipment. The wiring connection installs the flow switch in the 24 VAC safety circuit to prove water flow before main burner ignition. The standard flow switch is installed in the outlet side of the piping loop when shipped from the factory. These pool heaters require a sufficient flow of 26 GPM to make the flow switch and start burner operation.

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