Installation Operation Maintenance

Unit OptionsHot water coilIn order to prevent water to freezeup in the coil during unoccupiedperiod or shutdown limited period,a thermostat opens when there is arisk of freeze-up. The services of awater treatment specialist arerecommended if water used cancause scaling deposits or erosion.Insulate all the water piping likely tobe exposed to freezingtemperatures in order to avoidfreeze up of the coil and heatlosses. The water distributionnetwork must be fitted with vents inplaces where air is likely to betrapped.The hot water coil is factorymounted in the discharge section.Two holes are provided to connectthe hot water coil. They are locatedat the base of the unit. Remove thecentral panel to access the coil,using an 8 mm wrench (the boltsare located on the bottom part ofthe panels). The tubes for enteringand leaving water are equippedwith a threaded female connector.Water connection inlet/outlet:1 ¼" ISO R7.Installation and connectionIn order to prevent water to freezeup in the coil during unoccupiedperiod or shutdown limited period,it is recommended to use ethyleneglycol. The services of a watertreatment specialist arerecommended if water used cancause scaling deposits or erosion.Insulate all the water piping likely tobe exposed to freezingtemperatures in order to avoidfreeze up of the coil and heatlosses. The water distributionnetwork must be fitted with vents inplaces where air is likely to betrapped.Table 43 - Ethylene glycol percentageFigure 26 - Hot water coil connectionsEthylene glycolpercentageFreezing point(%) (°C)10 -420 -1044RT-SVX20B-E4