Raypak C-R185B User Manual Page 9

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WINTERIZING THE POOL & SPA HEATER
Heaters installed outdoors in freezing climate areas are
subject to be shut down for the winter. Observe the
following procedure for winterizing the heater:
1. Turn off gas valve, manual gas valve, and electrical
supply to the heater.
2. Open drain plug located on the inlet/outlet header,
(under water pipes). Remove the heat exchanger
inspection panel on the side opposite water piping to
gain access to the drain plug on the return header.
Open drain plug on return header.
9
Return Header
Drain Plug
3. For ASME Heaters only:
Disconnect compression
fittings from the pressure switch and return header
that connects to the 1/4" copper tube and allow the
tube to drain. For ASME Heaters only.
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