Powers e420 User Manual
Series e420 Combination Tempering Valve Model 1
Technical Instructions
Description
The Series e420 HydroGuard® T/P automatically mixes hot and cold water to
deliver blended water within a specified range. Using an advanced thermal actuator, the Series e420 quickly compensates for temperature fluctuations induced by
water temperature and pressure changes. In the event of cold water failure, the
thermostatic motor virtually shuts of the flow of hot water.
Featuring heavy, cast-brass construction and integral checkstops, all parts of
the e420 Series valve are accessible from the front of the valve and are corrosion resistant. The unit also features a metal to metal temperature limit stop, and
all Series e420 valves open in the cold water position to ensure maximum bather
safety and comfort.
The accuracy, reliability and water economy of the Series e420 HydroGuard
make it preferable for applications that require precise, consistent water control:
showers, baths, hospital hydrotherapy and residential areas.
Many HydroGuard
the Americans with Disabilities Act (ADA).
Specifications n
Valve Construction: Thermostatic mixing valve, with heavy cast bronze
body, metal to metal temperature limit stop, integral checkstops and brass stem.
Available with ADA-compliant lever handle.
Connections: ..................................................................... 1/2" NPT inlets/outlets
1/2" sweat inlets/outlets
Capacity ............................................................................. 5.0 gpm [19.0 L/min]
(±0.25 gpm [0.90 L/min])
Checkstops ....................................................................... Integral to casting
Maximum Hot Water Supply Temperature ................. 190°F (88°C)
Minimum Hot Water Supply Temperature .................. 10°F (6°C) above set point
Maximum Operating Pressure ...................................... 125 psig (862 kPa)
Temperature Ranges
ASSE 1016 Type T/P ........................................................ 90 - 110°F (32 - 43°C)
ASSE 1016 Type T ............................................................ 65 - 115°F (18 - 46°C)
Temperature Limit Stop . ................................................. Adjustable (factory set at
110°F [43°C])
Maximum Static Pressure .............................................. 125 psig (862 kPa)
Minimum Flow: ................................................................. 1 gpm (3.781 L/min)
Certification ...................................................................... CSA B125
Compliance ....................................................................... ASSE 1016 Type T/P
Shipping Weight ............................................................... 5 lbs. (2.3 kg)
All HydroGuard
specifications based on typical operating conditions as stated in ASSE 1016 [45 psi
pressure differential, hot water supply between 140°-180°F (60°-82°C), cold water
supply less than 70°F (21°C)].
If your operating conditions vary from those stated in the standard, performance
may vary as well. Consult your local sales representative or the Powers technical
support department @ 1.800.669.5430, Press "2" to discuss your specific application.
All Powers thermostatic mixing valves perform to the requirements of standards
ASSE 1016 Type T/P and CSA B125.
n
®
®
Series e420 valves and shower systems can be selected to meet
*
®
Series e420 thermostatic mixing valves meet above performance
IS-P-e420
HydroGuard® T/P
Advanced Thermal Activation
!
W A R N I N G
FAILURE TO COMPLY WITH PROPER INSTALLATION
AND MAINTENANCE INSTRUCTIONS COULD
CONTRIBUTE TO THE VALVE FAILURE, RESULTING
IN INJURY AND/OR DEATH.
TO ENSURE THE ACCURATE AND RELIABLE OPERATION OF THIS PRODUCT, IT IS ESSENTIAL TO:
• Properly design the system to minimize pressure and
temperature variations.
• Conduct an annual maintenance program to ensure
proper operation of all critical components.
• Check outlet temperature to ensure it does not
exceed 110°F (43°C). Make sure temperature limit
stop is properly re-set to maximum 110°F (43°C) following valve maintenance or repair. Tampering with
limit stop in any way may result in scalding temperature causing serious bodily harm and/or death.
!
W A R N I N G
Need for Periodic Inspection: Periodic inspection by a
licensed contractor is recommended. Corrosive water
conditions, and/or unauthorized adjustments or repair
could render the valve ineffective for service intended.
Regular checking and cleaning of the valve’s internal
components and check stops helps assure maximum
life and proper product function. Frequency of cleaning
and inspection depends upon local water conditions.
Cold Water Supply
Shuttle
Advance Thermal
Actuator
Operation n
Hot and cold water enter respective ports in the valve and mix in a chamber containing an advanced thermal actuator (refer to cutaway view). This actuator senses
and maintains the set point of the valve.
Rotating the adjustment handle repositions the shuttle in the cartridge assembly
to produce the desired temperature. The mixed water passes over the shutoff disc
* At 45 psi differential [310 kPa], with hot water supply between 140°–180°F [60–82°C].
Temperature
Limiting Stop
Cartridge
Assembly
Hot Water Supply
Operation cont. n
to the outlet. If the hot or cold supply water temperature or pressure
changes, the thermal actuator will contract or expand. This movement
repositions the shuttle to maintain the desired temperature. With the
adjustment handle in full clockwise (OFF) position, the shutoff disc
closes the mixing chamber from the outlet.
Installation n
A temperature limit stop limits the movement of the control handle. The
standard HydroGuard
®
e420 valve is factory set to deliver tempered
water up to 110°F [43°C] with equal supply pressures, with hot water
temperature 140°F [60°C], cold water temperature 60°F [15.6°C]
NOTE: Installation should be in accordance with accepted plumbing
practices. Flush all piping thoroughly before installation. Failure to do
so can result in a valve malfunction.
TO INSTALL
1 . Position mixing valve 2 3/4" ±3/8" (69mm ± 10mm) from inlet center
to finished wall surface. For reference a rough-in guide is provided,
ensure it is pushed on fully and the valve is closed when positioning
valve. The tub outlet port is marked TUB” and should face down.
Facing the front of the mixing valve, connect hot water to left side
and connect cold water to right side. The mixing valve has “C” and
“H” cast into the body near the appropriate ports. Inlets and outlet
connections must be piped correctly for proper operation of valve.
If hot and cold water connections are reversed, valve will not function properly.
2. For tub and shower installations, see Figure 1. Pipe bottom outlet
port “TUB” directly to the diverter tub spout. The mixing valve is
designed to operate without the use of a twin ell. Pipe top outlet port
“S” to the showerhead.
3. For shower only installation, see Figure 2. Pipe top outlet port “S”
directly to the showerhead and plug bottom port.
CAUTION: When soldering during the installation process, do not
heat the valve any higher than the temperature required to flow solder.
Excessive overheating of the valve may cause damage to the valve
internals. By following this recommendation, you will be able to solder
the valve without removing either the cartridge or the checkstops internals. If either brazing or resistance (electric) solder is used, all checkstop and valve internals must be removed.
Wall
Figure 1:
Rough-in Dimensions
– Tub and Shower
6 1/16"
(155mm)
3 1/8"(79mm)
5 1/2"
(139mm)
All Dotted Line Piping
Supplied By Others
"S" to Be
on Top
4 1/8"(105mm)
5 3/8"(137mm)
3 1/8"(79mm) max
2 3/8"(60mm) min
4"(101mm)
Tub Rim
78" (1981mm)
Approx.
To Finished
Floor
15/16"
(23mm)
12" (305mm)
4" (102mm) Approx
Figure 3:
Rough-in Guide
15/16"
(23mm)
1 13/16"(46mm)
2 5/16"(58mm)
3 1/8"(79mm) max
2 3/8"(60mm) min
6 1/16"
(155mm)
3 1/8"
(79mm)
4. Turn hot and cold water supplies on and verify there are no leaks.
5. Rough-in guide installation
a. Before strapping the pipes and before completing the finished
wall, slide rough-in guide onto the mixing valve stem and press
fit into place, see Figure 3. (valve stem must be rotated fully
clockwise).
b. The rough-in guide will insure the proper size opening and
location of the finish wall.
6. After finished wall is completed, remove rough-in guide to allow
installation of the trim.
7 . Peel off backing of dial gasket and attached it to the inside top edge
of dial plate. Make sure gasket is approximately 1/16" beyond the
plate edge.
8. Hold plate firmly against the wall. Thread sleeve on the bonnet making sure that the cut away on the sleeve is towards you and is in
the bottom position when tightened. Do not use any tool to tighten
which will scratch the sleeve surface.
9. Install handle with the screw provided.
10. Maximum temperature setting adjustment (Figure 4) must be set on
the job. The high temperature limit stop is threaded into the bonnet
and is turned counter clockwise for an increased setting and clockwise for a decreased setting. Powers recommends a maximum
setting of 110°F (43°C). To adjust temperature, rotate handle to the
maximum desired outlet temperature, screw temperature limit stop
until it touches stem’s shoulder. Close valve and open it to verify
setting.
WALL
Figure 2:
WALL
Rough-in Dimensions
– Shower Only
ALL DOTTED LINE
PIPING SUPPLIED
BY OTHERS.
6 1/16"
6 1/8" [155]
(155mm)
3 1/8" [79]
3 1/8"(79mm)
R1 5/8" [R40]
All Dotted Line Piping
Supplied By Others
"S" to Be
'S' TO BE
on Top
ON TOP
4 1/8"(105mm)
5 1/2"
5 5/8" [142]
(139mm)
4 1/8" [105]
1/2" NPTF
CONNECTIONS
1/2" NPT
MALE INLET
1 7/16" [37] MIN.
3 1/8"(79) max
2 7/16" [62] MAX.
2 3/8"(60) min
Ø4" [102]
4"(101mm)
78" (1981mm)
78" [1981]
Approx.
APPROX.
TO FINISHED
To Finished
FLOOR
Floor
15/16"
7/8" [23]
(23mm)
Figure 4:
Max Temperature
Setting
Clockwise for
cooler temperature.
Counter clockwise
for warmer temperature
Optional For
3 Port Valve
SIDE VIEW
5 1/2"
(139mm)
FRONT VIEW
2
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