Raypak P-926 External Auxiliary Bypass Valve Where Required, 926-1223Models Only, High Limits

External Auxiliary Bypass

Valve (Where Required)

926-1223 Models Only

Bypass Valve

An auxiliary bypass valve should be used when flow
rates exceed 120 gpm (usually a high performance
pump size larger than two HP will exceed this flow
rate). This valve is required to complement the func-
tion of the automatic bypass valve, particularly when
starting the heater in winter or early spring when the
spa or pool temperature is below 55°F. It also serves
to eliminate needless pressure drop through the
heater and accompanying reduction in the flow rate to		Open Position	Closed Position
the spa jets, etc.
From Heater	To Heater

To Pool From Filter

Fig. 23: Auxiliary Bypass Valve

Auxiliary Bypass Valve

Adjustment

To set bypass: With clean filter, adjustment is made by feeling the inlet and outlet pipes at the heater. Outlet pipes should be slightly warmer than inlet and comfort- able to the touch. If pipe is hot, close bypass; if cold, open bypass.

NOTE: Do not use a gate valve as an auxiliary bypass valve on any heaters.

Models 926-1223

The heater is also equipped with a manual bypass built into the header. This is in addition to the automat- ic bypass valve. This may be used with flow rates up to 120 gpm and adjusted as below.

NOTE: Sooting or liming caused by improper bypass adjustment voids the warranty.

Fig. 24: Manual Bypass Valve

NOTE: To avoid water damage or scalding due to valve operation, drain pipe must be connected to valve outlet and run to a safe place of discharge. Drain pipe must be the same size as the valve discharge connection throughout its entire length and must pitch downward from the valve. No shut-off valve shall be installed between the relief valve and the drain line. Valve lever should be tripped at least once a year to ensure that waterways are clear.

Temperature Controls

High Limits

The pool heater is equipped with two high limits. Both high limits, the non-adjustable auto reset high limit and adjustable manual reset high limit are attached to the outlet side of the in/out header.

Pool Stat

The pool heater is equipped with a pool thermostat that is attached to the inlet side of the in/out header to control the pool temperature.

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