Raypak 267A INLET/OUTLET Header Polymer, Cast Iron Headers Asme Models, INLET/OUTLET Header Asme

POLYMER HEADERS (STANDARD MODELS) Before attaching the 2-inch unions to the inlet/outlet header, make sure the O-rings are properly seated in the grooves. Use AquaLube or equivalent non-petro-leum-based lubricant on the O-ring.Hand tighten the unions. Glue PVC piping directly to the unions.

INLET/OUTLET HEADER - POLYMER

O-Ring

Header Flange (CPVC)

Header Flange Nut (CPVC)

Fig.# 2002.1

High-temperature CPVC header flanges and header flange nuts are provided. If there is any possibility of back-siphoning when the pump stops, it is suggested that a check valve (or valves) also be installed in the system.

CAST IRON HEADERS (ASME MODELS)

Heater must be located so that any water leaks will not damage the structure of adjacent area. High tempera- ture 2" plastic pipe (CPVC) may be threaded directly into the header flanges. This is not the same as the Schedule 80 PVC pipe which is also gray. PVC may be used immediately after the supplied CPVC adapters.

Header

Header Flange (Supplied)

CPVC Connector (Supplied)

Plumbing

WARNING: NEVER install PVC directly into header flanges. Use the 2" CPVC adapter supplied loose with the heater.

DO NOT use petroleum-based assembly fluids (such as petroleum jelly or lubricating oil). If assembly lube is required, use a silicon base such as AquaLube etc.

There are two sets of flange gaskets supplied with your heater. Use the appropriate gaskets for all your heater connections. Discard unused set.

GASKET DESIGN #1: Accepts 1-1/2" copper tube or 1-1/4" galvanized pipe as a slip connection. GASKET DESIGN #2: Accepts 2" copper tube as a slip connection. The flange is threaded for 2" screw in pipe connections. Also used with the 2" CPVC adapters.

#1#2

Fig.# 8095.1 Fig.# 8097.1

INLET/OUTLET HEADER - ASME

Flange Gasket

Header Flange Fig.# 8093.1

UNITHERM GOVERNOR OPERATION

CAUTION:

The patented Unitherm Governor is a thermostatic mixing valve specifically designed to maintain con- stant heater internal temperature between 105° and 115°F despite continually changing flow rates from the filter and changing pool temperatures. This nar- row range is needed to prevent damaging condensa- tion on the burners which will occur if the heater runs for any length of time below 100°F. It is also needed to inhibit scale formation in the tubes by maintaining temperatures well below accelerated scaling temper- atures.

U.G. Plug (Polymer)

Unitherm

Governor

Gasket

Fig.# 2011

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