Powers 450-900 HydroPanel II Shower System with Biltmore 900 Pressure Balancing Valve - Manual (Page 3)

Set the Limit Stop
The Biltmore 900 is a pressure balancing valve, and therefore
cannot compensate for variations in hot water supply tempera-
tures. It is factory set to pass full hot water.
The handle rotation setting must be adjusted to limit the
distance the user can rotate the handle towards the full hot
water position.
CAUTION: Any repair or modification of the valve will affect the
high temperature setting. Any changes in inlet water temperature
will require readjustment of the limit stop.
Maximum temperature setting must be set at the job site.
High temperature limit stop is located on the bonnet. Refer
to Figure 5.
16. Remove O-ring and discard.
17. Slide the retainer and the high temperature limit stop
out. Rotate stem to desired maximum temperature, but
no greater than 115°F (46°C). Slide back the maximum
temperature limit stop touching the tab on the stem.
18. Slide the retainer back all the way to secure the high
temperature limit stop. Install handle.
19. Replace handle. Repeat steps 12 through 18 until desired
maximum outlet temperature is reached. Remove handle
before final assembly of shrouding.
Assemble the Valve Cover and Handle
20.(Figure 4) Fit the dial insert onto the shrouding and secure to
the shroud and valve at D and D ’ with the 2-1/4 " screws.
21.Slide the O-ring and sleeve over the bonnet. Place the lever
over the stem, and secure with retaining screw using the
supplied wrench.
22.(Figure 4) Finish assembly by tightening the shrouding screw
at A above the showerhead.
Before servicing checkstops or piping, turn off the supply water
upstream. To access the checkstops, remove the valve handle
assembly, cover plate and shrouding (refer to Install the Piping
Assembly).
At least every twelve months, open up the checkstops and check
for free movement of the poppet.
Before servicing the valve, either turn off the water supply
upstream (the shroud does not have to be removed), OR access
and close the checkstops. To close the checkstops, turn the
adjustment screw on each fully clockwise.
Every month, check and adjust the handle rotation setting. Every
twelve months, remove the valve bonnet and check the internal
components for freedom of movement.
To service or clean the showerhead, unscrew from shroud at hex
nut. Service as necessary, and reattach.
TI450-900 Page 3
INSTALLATION, CONTINUED
SERVICING THE HYDROPANEL UNIT
*NOTE: For complete technical instructions on servicing the
Biltmore 900 valve or integral checkstops, please refer to Form
#TI 900.
1. If the flow of water is less than desired...
a. The upstream supply valves may not be fully open.
b. The inlet supply pressure(s) may be low.
c. Lime deposits may have accumulated in the hot water pipes,
restricting water flow.
d. The showerhead may be clogged. Remove according to
Servicing the Hydropanel II Unit and clean.
e. The checkstops may be clogged.
2. If the flow of water is completely shut off...
a. The upstream supply valves may be completely closed.
b. The hot or cold water supply pressure may have failed. The
Biltmore 900 valve is designed to virtually shut off in the event
of hot or cold supply water failure.
c. The checkstops may be closed. Access the checkstops and
open by turning the adjustment screw fully counterclockwise.
3. If the water flowing from the showerhead varies in tem-
perature, or is untempered hot or cold...
a. The diaphragm inside the balancing chamber may have failed.
Replace with Repair Kit #900 032.
b. The hot water supply temperature may be too low.
4. If water continues to flow from the showerhead after shut
off, or the valve leaks at the stem and/or bonnet...
a. The shut-off discs or gaskets in the valve may have worn out.
Replace with Repair Kit #900 028.
b. The mixing plate may be damaged. Replace with Repair Kit
#900 032.
c. Inlet O-rings may be damaged.
5. If the checkstops leak, or they won’t shut off...
a. The checkstops may be damaged. Clean and service with
Repair Kit #900 050.
6. If a maximum temperature cannot be obtained...
a. Lime deposits may have accumulated in the hot water pipes,
restricting the hot water supply.
b. The hot water supply temperature may be too low.
c. The handle rotation setting may be too low. Remove valve
handle, and readjust the limit stop (see Setting the Limit Stop).
d. The diaphragm assembly may have failed. Replace with
Repair Kit #900 032.
7. If the valve opens with hot water flow rather than cold
water flow...
a. The supply water inlets may be reversed, or the mixing plate
orientation may be incorrect. Refer to Figure 6.
1) Turn the valve handle to full clockwise position (OFF).
TROUBLESHOOTING
Figure 5.
High temperature Stop
Retainer
O-ring