Submittal Sheet
F74C REVERSE RINSING FILTER; MV876 AUTOMATIC-BACKWASH CONTROLS
5 62-3061
INSTALLATION
When Installing this product...
1.
Read these instructions carefully. Failure to follow 
them could damage the product or cause a hazardous 
condition.
2.
Check ratings given in these instructions and on the 
product to make sure the product is suitable for your 
application. 
3.
Make sure the installer is a trained, experienced service 
technician.
4.
Use these instructions to check out product operation 
after installation.
CAUTION
Equipment Damage Hazard.
Excessive pressure or temperature can damage 
the device.
Make sure water temperature and pressure are below 
maximum ratings specified.
CAUTION
Equipment Damage Hazard.
Excessive heat can damage internal parts.
Before sweat soldering, separate the tailpieces and 
nuts from the inlet/outlet adapter.
F74C Installation.
When installing an F74C, use the following procedure:
1.
Shut off water supply by closing the water supply valve.
2.
Install inlet/outlet adapter so that filter is vertical.
3.
Install the F74C in the water line with the arrow pointing 
in the direction of water flow.
IMPORTANT
When using an MV876, stop here and install the 
MV876.
4.
Open a downstream tap.
5.
Slowly open the water supply valve.
6.
Once the F74C sump fills with water, close the 
downstream tap and fully open the water supply valve.
MV876 Installation
1.
Open the backwash outlet ball valve.
2.
Remove the backwash outlet handle.
3.
Install the MV876. See Fig. 9 and 10.
NOTE: When you rotate the MV876 on installation, it closes 
the backwash outlet ball valve.
4.
Connect the MV876 to a 24 Vac power supply. 
See fig. 14.
5.
Open a downstream tap.
6.
Slowly open the water supply valve.
7.
Once the F74C sump fills with water, close the 
downstream tap and fully open the water supply valve.
8.
Program the desired backwash interval by pushing the 
program button until the desired interval number 
appears in the display.
Fig. 9. Installing the MV876.
M16481
MV876B










