5 Installation14 Installation and maintenance instructions ecoTEC pro 0020244995_025.6 Connecting the condensate drain pipeworkDanger!Risk of death from escaping flue gases!The condensate drain pipework for the si-phon must not be connected tightly to waste-water piping because, otherwise, the internalcondensate trap may be drained fully and fluegas may escape.▶ Do not connect the condensate drainpipework tightly to the waste-water pip-ing.SoakawayGulleyInternalstackpipeInternaldischarge systemmin.1801123The product is equipped with a condensate trap (2). (Thefilling height is 145 mm). The condensate trap collects thecondensate that has formed in a vessel with a capacity ofapproximately 200 ml, and intermittently releases the con-tents into the discharge pipe. This minimises the risk of thedischarge pipe freezing.▶ Connect the condensate discharge (1) to condensatedrain pipework (3) which has a minimum internal dia-meter of 19 mm (22 mm outside diameter for all externalpipes) and is made from an acid-resistant material (e.g.plastic overflow pipe).– The condensate discharge pipework must havea continuous fall (45 mm per metre) and shouldwhenever possible terminate at a suitable dischargepoint within the heated envelope of the buildingthat will remain frost free under long periods of lowexternal temperatures.▶ During installation remove all burs from inside of cut pipework and avoid excessive adhesive which may trap smallpockets of water close to the pipe wall which can freezeand build into a larger ice plug.▶ As with other pipe work insulate the condensate dis-charge pipe to minimise any risk of freezing and bewarewhen crossing cavities that the fall is maintained and thepipe sleeved.▶ Ensure that the condensate drain pipework terminates ina suitable location. Further information can be obtainedfrom BS 6798 Specification for installation of gas–firedboilers of rated input not exceeding 70 kW net.▶ Leave an installation space of at least 180 mm beneaththe condensate trap.5.7 Installing the discharge pipe on theexpansion relief valve1. Install the discharge pipe for the expansion relief valveso that it does not interfere with the removal and fittingof the lower section of the condensate trap.2. Install the discharge pipe as shown (do not shorten).3. Make sure that the end of the pipe is visible.4. Ensure that discharged water or steam cannot causeinjury to persons or damage to electronic components.5. Ensure the discharge pipe work is installed, routed andterminated correctly to minimise the risk of freezing up.5.8 Flue installation5.8.1 Installing and connecting the flue pipe1. You can find out which flue pipes may be used by con-sulting the enclosed flue pipe installation manual.2. Observe the information on positioning the openingfor the flue pipe. This information can be found in theappendix.Conditions: Installation in damp rooms▶ You must connect the product to a room-sealed air/fluegas installation. The combustion air must not be takenfrom the installation site.Caution.Risk of poisoning due to escaping fluegas.Mineral-oil-based greases can damage theseals.▶ Instead of grease, use only water or com-mercially available soft soap to aid install-ation.3. Install the flue pipe using the installation manual.