Munchkin Gas-Fired Hot Water Circulating Heater Condensate Removal System, Material, Canada

GAS-FIRED HEATER Installation Manual

PART 7: VENTING, COMBUSTION AIR & CONDENSATE REMOVAL (CONTINUED)

H. CONDENSATE REMOVAL SYSTEM

This is a condensing high efficiency appliance, therefore this unit has a condensate removal system. Condensate is nothing more than water vapor, derived from the combustion products, similar to an automobile when it is initially start- ed. It is very important that the condensate line is sloped away from the heater and down to a suitable inside drain, if the condensate outlet on the Munchkin Contender is lower than the drain, you must use a condensate removal pump (kit P/N 554200 available from Heat Transfer Products, Inc.) A condensate filter, if required by local authorities can be made up of lime crys- tals, marble or phosphate chips will neutralize the condensate. This can be done in the field by the installer or you may purchase one from Heat Transfer Products, Inc. (P/N N1100) It is also very important that the condensate line is not exposed to freezing temperatures, or any other type of blockage. Plastic tubing should be the only material used for the condensate line. Steel, brass, copper or others will be subject to corrosion or deterioration. A second vent may be necessary to prevent condensate line vacu- um lock if a long horizontal run is used. Also, an increase in pipe size may be necessary to drain properly. Support of the condensation line may be necessary to avoid blockage of the conden- sate flow.

NOTICE

Use materials approved by the authority having jurisdiction. In the absence of other authority, PVC and CPVC pipe must comply with ASTM D1785 or D1784, F441 or D2665. Cement and primer must comply with ASTM D2564 or F493. For Canada, use CSA or ULC certified PVC or CPVC pipe, fittings and cement. (See Table 7-9) When installing a condensate pump, select one approved for use with condensing heaters and furnaces. The pump should have an overflow switch to prevent property damage from condensate spillage.

Condensate from the Munchkin Contender Heater will be slightly acidic (typically with a pH from 3.2 to 4.5). Install a neutralizing filter if required by local codes.

Table 7-9

Item	Material	United States	Canada
	PVC schedule 40	ANSI/ASTM D1785
Vent or air
	PVC-DWV	ANSI/ASTM D2665
pipe and
	CPVC schedule 40	ANSI/ASTM F441
fitting			ULC S636
	ABS-DWV schedule 40	ANSI/ASTM D2661	certified
			only
Pipe	PVC	ANSI/ASTM D2564
cement/	CPVC	ANSI/ASTM F493
primer
	ABS	ANSI/ASTM D2235

CAUTION

The condensate line must remain unobstructed, allowing free flow of condensate. If condensate is allowed to freeze in the line or if the line is obstructed in any other manor, condensate can exit from the heater tee, resulting in potential water damage to property.

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