Crown Boiler PHNTM080 - Condensate Trap and Drain

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I. Condensate Trap and Drain Line
All condensate which forms in the boiler or vent system passes through the heat exchanger and out of a bottom drain port
which is connected to the condensate trap with a hose. This trap allows condensate to drain from the heat exchanger while
retaininguegasesintheboiler.Thistrapisanintegralpartoftheboilerbutmustbeconnectedtoadrainpipeasshownin
Figure 7.47. A length of corrugated tubing is supplied with the boiler and is connected to the trap as shown in Figure 7.35. Note
the following when disposing of the condensate:
1. If the corrugated condensate drain line must be extended, construct the extension from PVC or CPVC pipe. Insert the hose
provided with the boiler into the end of the extension as shown in Figure 7.47.
2. Condensateisslightlyacidic.Donotusemetallicpipeorttingsinthecondensatedrainline.Donotroutethedrainline
through areas that could be damaged by leaking condensate.
3. Some jurisdictions may require that the condensate be neutralized before being disposed of. Dispose of condensate in
accordance with local codes.
4. Do not route, or terminate, the condensate drain line in areas subjected to freezing temperatures.
5. If the point of condensate disposal is above the trap, it will be necessary to use a condensate pump to move the condensate
tothedrain.Insuchcases,selectacondensatepumpthatisapprovedforusewithcondensingboilers.Ifoverowfromthis
pumpwouldresultinpropertydamage,selectapumpwithanoverowswitchandusethisswitchtoshutdowntheboiler.
Alternatively,ifheatisanecessity,usetheoverowswitchtotriggeranalarm.
6. Do not attempt to move the trap from the location shown in Figure 7.47. Do not attempt to substitute another trap for the one
provided with the boiler.
7. The vent shown in Figure 7.47 must be left open for the trap to work properly.
FIGURE 7.47: CONDENSATE PIPING ARRANGEMENT
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