Instructions / Assembly
PENTAIR OMNIFILTER WHH-10BB-SG-1 & WHH-20BB-SG-1 / HEAVY-DUTY HIGH-FLOW HOUSING • INSTALLATION AND OPERATING INSTRUCTIONS • 3
1
A
3
4
A
C
B
D
E
B
1
2
6
7
5
C
4
3
INSTALLATION
NOTE:
• For installation on galvanized, copper or plastic pipe. Style of ttings may vary
from those shown, depending on type and size of pipe.
• Use only plumber tape for tting housing connections.
• Install lter cartridge in lter housing according to the lter cartridge
replacement instructions (below) before proceeding with installation.
• Install lter after water meter or pressure tank.
• Numbered diagrams correspond with numbered steps.
1. Turn off cold water supply (A) and open nearest faucet (B) to release pressure in
pipes before starting installation.
2. Assemble all ttings. Start adapters into cap by hand. Use a wrench to tighten
rmly. Do not over-tighten.
3. Measure length (C) across assembled ttings and subtract 1-inch if you are
installing on 3/4-inch pipe, or 1
1
⁄2-inch if you are installing on 1-inch pipe. Mark
section of main line pipe to be removed.
Using a pipe cutter or hacksaw, cut pipe and remove marked section (C) and thread
ends of the remaining pipe. Wrap threads with plumber tape.
Align lter assembly with ends of pipe, making certain cap opening marked “IN”
is facing your incoming water supply. It will be necessary to spread ends of pipe
apart to install lter assembly. Using two adjustable wrenches, hold inlet adapter
securely with one wrench and tighten with second wrench. Repeat process for
outlet adapter.
CAUTION:
If water pipes are used to ground electrical systems, appliances or
phones, be certain to install a jumper wire.
4. Attach bracket to cap with screws. Attach bracket with cap to wall.
NOTE: The top of the bracket should be no less than 24-inches off the oor (10-
inch system) or 34-inches off the oor (20-inch system) allowing a 5-inch
clearance below housing to enable lter cartridge changes.
FILTER CARTRIDGE REPLACEMENT
A. (1) Turn off water supply to lter. (2) Depress red pressure-relief button to release
trapped air.
B. Place a bucket or container under bottom of housing.
C. Remove bottom of housing by turning clockwise.
NOTE: If turning off water supply to the lter will also turn off water to the rest of
the home, be sure to ll a bucket of water rst to allow you to clean housing
after it has been removed.
D. Locate and remove large O-ring (3), wipe clean of lubricant and set aside.
Discard used cartridge (4). Rinse out bottom of housing and ll 1/3 full with water.
Add 2 tablespoons of bleach and scrub cap and bottom of housing with non-
abrasive sponge or cloth. Rinse thoroughly.
Lubricate O-ring (3) with clean silicone grease. Insert O-ring back into groove and
smooth into place with nger.
NOTE: This step is important to ensure proper housing seal.
Make sure O-ring is seated level in the groove.
Insert new cartridge (3) over standpipe in bottom of housing.
E. (5) Screw bottom of housing onto the cap and hand-tighten. Do not over-tighten.
Make certain cap standpipe slips into cartridge.
(6) Turn on water supply slowly to allow lter to ll with water. (7) Depress red
pressure-relief button (if present) to release trapped air. Flush cartridge for 5
minutes before use. Check for leaks before leaving installation.