From water-efficient bathroom fixtures to water-conserving dual-flush toilets, bathrooms are increasingly designed with eco-friendly…
What you'll need
- WaterSense® toilet
- Ratchet wrench & sockets
- Adjustable wrenches
- Wax ring
- Floor bolts
- Mounting nuts
Installing a WaterSense® Toilet
You’ll install a new WaterSense® toilet in two steps – first the bowl, then the tank.
The most difficult part of the installation will be putting the bowl in place. It’s heavy, and you’ll have to place it so the floor bolts are lined directly up with the holes in the toilet base. (Avoid banging the toilet into anything. If it cracks, it can’t be used. )
BEFORE YOU START
- Turn off water supply at shutoff valve
- Plug the drain opening with a rag to keep sewer gases in the pipes.
1. Set the mounting bolts
If you’re replacing the flange, it must be screwed into a wooden floor. (Use self-tapping concrete screws for concrete). Put an extra nut on each bolt, and tighten it against the flange to hold the bolts in place.
2. Place the wax ring on the toilet
The “no-seep” wax ring size will vary with the size of the flange. Be sure to purchase the proper size. A 3-inch neck will fit a 3-inch closet elbow, and a 4-inch neck will fit a 4-inch closet elbow. If the closet elbow is 4 inches and the neck is 3 inches in diameter, purchase a 4×3 reducer. If the flange is positioned below floor level, buy a double-thick ring.
3. Position the toilet
Straddle the WaterSense® toilet bowl and lift, using your legs – not your back. Set the toilet over the anchor bolts and sit on the toilet, rocking it back and forth to seat the wax ring. Slip a washer over the closet bolt.
Tighten the nuts against the washer by hand. With a wrench, tighten each nut a half-turn. Alternate tightening each side a half-turn until the WaterSense® toilet fits snugly. Tightening either side too much will cause the toilet to crack. If the toilet rocks or isn’t level, shim it with plastic toilet shims, and cut the ends off, so they won’t be seen. If necessary, cut the flange bolts to size with a minihackaw so it’s only 1⁄4 to 1⁄2 inch extends above the bolt.
4. Set the tank anchor bolts
Place the tank anchor bolts in the holes of the tank to help guide the tank onto the bowl. ( Most tank bolts come with a rubber washer, a metal washer, and a nut. The rubber washer goes on the inside of the tank, and the metal washer goes next to the nut on the underside of the bowl.)
5. Place the tank on the bowl
Lift the tank and place it over the bowl. You may need some help with this. Guide the tank bolts into the corresponding holes on the toilet bowl. Hold an adjustable wrench over the tank bolt nut while you tighten the bolt with a screwdriver. Don’t overtighten; you can crack either the tank or the bowl.
6. Install the shutoff valve
Set the valve over the compression ring and draw the nut to it. Tighten the nut until hand-tight. Use two adjustable wrenches to tighten until snug – one to hold back the valve and the other to tighten the compression nut.
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