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| A sediment trap (the short section of pipe running downward) is attached to the gas shutoff valve. |
The final gas connections are made. |
The water line connections are made to the tankless water heater. |
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| A sensitive gas sniffer is used to ensure there are no leaks in any of the fittings. |
Heat resistant silicone sealant is applied to the heater vent at the top of the unit. A connector is slipped on and secured to the vent with a hose clamp. |
A section of stainless steel vent pipe is inserted into the connector. A retaining ring is pulled into place and the tabs that lock the ring in position are folded down over this ring.
A 90-degree elbow directs the vent toward the rim joist. |
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Using a long shaft quarter-inch bit, bore through the rim joist to the outside, at the center of the place where the vent will touch the rim joist.
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Outside, center the wall thimble on the hole you just drilled, and trace the outline of the thimble onto the wall. The
thimble will prevent the vent pipe from having any direct contact with wood as it passes through the wall. |
Using a spade bit, bore a one-inch hole near the edge of what will be the opening. Now insert the blade of a reciprocating saw into this hole and cut along the line you've traced. |
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| The flange on the wall thimble should set directly against the plywood sheathing. You may need to remove the shingles around the edge of the opening so that the silicone caulk, applied to the outer flange, will insure a watertight seal against the sheathing. |
Drill pilot holes through the stainless steel flange and drive in screws that pull it into tight contact with the sheathing. Be sure to keep any building paper out of the way. Seal the screw heads and the building paper with more silicone. |
From the basement side, slip the interior flange into place, and feed the vent pipe into the thimble. |
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| Slip on one last vertical section of pipe on the outside with two 90-degree elbows on the end that form a “U” to prevent rain water from entering. With the vent assembled, all that's left is to
is to replace the siding material that was removed earlier. |
Wrap the hot water pipe coming from the heater with insulation. Plug in the power for the thermostat and onboard microprocessor, turn on the gas and fire up the system. |
In addition to the main thermostat, Paloma also offers a remote unit that allows the user to control the water temperature remotely, if they choose. When considering your next hot water heater, be sure to consider the benefits of a tankless system -- a smaller footprint for the heater, energy savings and endless hot water!
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