ultra sidewall venting logic

bob_34

looking at the venting instructions from weil mclain for the ultras, they have a special exhaust and intake fitting that goes on the side of the house. very nice but this fitting makes it impossible to make snow clearances to ground [12 inches above snow level] in the majority of situations when considering recomending an ultra to customers without the roof vent option due to structural conditions. weil mclain will not allow elbow/snorkle assemblies on the outside of the house to get around this. why? their vent thru the roof instructions show a snorkle for the intake and a straight shot for the exhaust and a fair amount of vetical pipe exposed to winter cold temperatures. that vertical exhaust pipe would make me nervous during heavy snow storms and long off periods between boiler cycles. a sidewall snorkle with an elbow would make me less concerned about exhaust snow/ice blockage than what they show on the roof with the open straight shot.

bob_34

no ultra sidewall snorkles allowed

looking at the venting instructions from weil mclain for the ultras, they have a special exhaust and intake fitting that goes on the side of the house. very nice but this fitting makes it impossible to make snow clearances to ground [12 inches above snow level] in the majority of situations when considering recomending an ultra to customers without the roof vent option due to structural conditions. weil mclain will not allow elbow/snorkle assemblies on the outside of the house to get around this. why? their vent thru the roof instructions show a snorkle for the intake and a straight shot for the exhaust and a fair amount of vetical pipe exposed to winter cold temperatures. that vertical exhaust pipe would make me nervous during heavy snow storms and long off periods between boiler cycles. a sidewall snorkle with an elbow would make me less concerned about exhaust snow/ice blockage than what they show on the roof with the open straight shot. just wondering what their logic is on this.