Raypak C-R185B User Manual download pdf (Page 19)

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.

INLET/OUTLET HEADER (Polymer)

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-petroleum

based lubricant on the o-ring. Hand tighten the unions.

Glue PVC piping directly to the unions.

PLUMBING FOR WATER CONNECTIONS

HEATER LOCATION (Relative to the pump and filter)

The RP 2100 heater requires water flow and positive

pressure to fire and operate properly. It must therefore be

installed downstream of the discharge side of the filter

pump. A typical installation is plumbed as follows:

1. The inlet side of the filter is plumbed directly to the

discharge side of the filter pump;

2. The outlet side of the filter is then plumbed to the inlet

of the heater; and

3. The outlet of the heater is plumbed to the return line

to the pool or spa. The pump, filter and heater are

thus plumbed in series.

Plumbing from the heater back to the pool must not have

any valves or restriction that could prevent flow when the

pump is operating.

Heater must be located so that any water leaks will not

damage the structure of adjacent area. PVC pipe may

be glued directly into header unions.

FLOW RATES

MODEL PIPE SIZE MIN.GPM *MAX.GPM

185 1-1/4"-1-1/2" - 2 20 125

265 1-1/4"-1-1/2" - 2 25 125

335 1-1/4"-1-1/2" - 2 35 125

405 1-1/4"-1-1/2" - 2 40 125

ASME-Cast Iron

Header Flange Nut

(CPVC)

Inlet

Header Flange

(CPVC)

Flange Gasket

Fig. #2002.1

POLYMER HEADERS

CAUTION: An additional source of heated water, e.g.

a solar system, must be connected to the main line

ahead of the heater inlet pipe in order for it to act as the

primary heat source. If the primary system provides

adequate heat to maintain set-point, the RP2100

heater will not fire. Be advised that the RP2100 control

panel will then display sensed water temperatures

downstream of the primary heating system, rather than

the temperature of the water exiting the pool.

*When flow rates exceed maximum GPM an external

auxiliary bypass valve is required. See external bypass

valve section for details.

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Raypak C-R185B User Manual Page 19

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