Tankless Water Heater Accessories
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Customers who have purchased water heater accessories have also been:
to Takagi Tankless Water Heaters -
to Rheem tankless water heaters
to Eemax Whole House Tankless Water Heaters -
to Seisco tankless water heaters -
to Everhot® Instant Water Heaters
to Chronomite Instant-Flow tankless water heater -
to Z-Vent gas venting products -
to other Tankless Water Heaters
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"I received my Takagi tankless water heater recess box (Model TK-RB02) and it doesn't have any holes for the water, gas, or electric lines - so how do I connect the lines?"
You need to drill holes in the TK-RB02 recess box to accommodate the gas, water, and electric lines. There are three suggested places to drill the holes; these are illustrated in the diagram below. For the side entry option, just drill two holes for the water on one side and one hole on the other side for the gas as pictured in the diagram. For the bottom entry option, just drill 3 holes in the bottom of the TK-RB02. There is also a back entry option where you drill 3 holes in through the back as shown in the diagram.

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