Powers SH1430 User Manual
Technical Instructions
!
WARNING
Read this Manual BEFORE using this equipment.
Failure to read and follow all safety and use infor-
mation can result in death, serious personal injury,
property damage, or damage to the equipment.
Keep this Manual for future reference.
!
WARNING
FAILURE TO COMPLY WITH PROPER INSTALLATION AND
MAINTENANCE INSTRUCTIONS COULD CONTRIBUTE TO THE
VALVE FAILURE.
This Hot Water Master Tempering Valves cannot be used for
tempering water temperature at fixtures. Severe bodily injury
(i.e., scalding or chilling) and/or death may result depending
upon system water pressure changes and/or supply water
temperature changes. ASSE standard 1016, 1069 or 1070 listed
devices should be used at fixtures to prevent possible injury.
These Hot Water Tempering Valves are designed to be
installed at or near the boiler or water heater. They are not
designed to compensate for system pressure fluctuations and
should not be used where ASSE standard 1016, 1069 or 1070
devices are required. These valves should never be used to
provide “anti-scald” or “anti-chill” service.
The components of the system must be of materials with a
construction capable of withstanding the high limit output temperatures of the water heating source.
!
WARNING
Need for Periodic Inspection and Yearly Maintenance:
Periodic inspection and yearly maintenance by a licensed contractor is required. 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.
HydroGuard
Description
The HydroGuard® XP LFSH1430 series is a temperature actuated
mixing valve designed for use in hot water distribution systems, in
compliance with ASSE 1017.
Specifications n
Maximum Operating Pressure ...................... 125 psi (861 kPa)
Maximum Hot Water Temperature ............... 200°F (93°C)
Minimum Hot Water Supply Temp. .............. 5°F (3°C) Above Set-Point*
Hot Water Inlet Temperature Range ............ 120 -180°F (49 - 82°C)
Cold Water Inlet Temperature Range .......... 40 - 80°F (4 - 27°C)
Temp. Adjustment Ranges ** Standard: ....... 90 - 160°F (32 - 71°C)
Listing ........................................ ASSE 1017
IS-P-SH1430
®
XP Master Tempering Valves
Series LFSH1430
Advanced Thermal Actuation
n
Low: .................. 60 - 90°F (16 - 32°C)
!
WARNING
You are required to consult the local building and plumbing codes prior to installation. If the information in this
manual is not consistent with local building or plumbing
codes, the local codes should be followed. Inquire with
governing authorities for additional local requirements.
Certified .................................... CSA B125
* With Equal Pressure
** Low limit cannot be less than the cold water temperature.
For best operation, hot water should be at least 5°F (3°C) above
desired set point.
Capacity n
Capacity Table, presents the HydroGuard discharge capacity in gpm
and lpm for various pressure drops across the valves (the difference
Flow Capacity at 50-50 mixed ratio
Model
LFSH1432
LFSH1434
LFSH1435
* Minimum flow when HydroGuard is installed at or near hot water source with recirculated tempered water with continuously operating recirculating pump.
Min. Flow Min. Flow
Rate* to ASSE 1017
0.5 gpm 1 gpm
1.89 lpm 4 lpm 72 lpm 102 lpm 144 lpm 178 lpm 216 lpm 250 lpm 269 lpm
0.5 gpm 1 gpm
1.89 lpm 4 lpm 159 lpm 227 lpm 322 lpm 394 lpm 481 lpm 556 lpm 602 lpm
0.5 gpm 5 gpm
1.89 lpm 19 lpm 254 lpm 360 lpm 507 lpm 621 lpm 761 lpm 878 lpm 950 lpm
C
V
8.54
19.00
30.00
5psi 10psi 20psi 30psi 45psi 60psi 70psi
(34 kPa) (69 kPa) (138 kPa) (207 kPa) (310 kPa) (414 kPa) (517 kPa)
19 gpm 27 gpm 38 gpm 47 gpm 57 gpm 66 gpm 71 gpm
42 gpm 60 gpm 85 gpm 104 gpm 127 gpm 147 gpm 159 gpm
67 gpm 95 gpm 134 gpm 164 gpm 201 gpm 232 gpm 251 gpm
between the lowest inlet pressure and the discharge pressure at the
HydroGuard.)
Pressure Drop Across Valve
Operation n
Typical Flow
Hot and cold water supplies enter HydroGuard at indicated ports, (see
Figure 1) then flow past their respective seats. Next, hot and cold water
flow is directed to the mixing chamber where the thermostatic motor is
located.
Temperature Change
With a rise in discharge temperature due to pressure or temperature
fluctuation on the inlet, the actuator expands, decreasing flow of hot
water. The reverse occurs with a drop in discharge temperature.
Responses
Temperature adjustment screw moves the actuator to the desired
discharge temperature.
• Cold water supply failure – causes actuator to expand drastically
reducing the flow of hot water
• Hot water supply pressure failure – causes actuator to contract
drastically reducing the flow of cold water
*
When tested in accordance to conditions described in ASSE 1017.
*
.
*
.
Figure 1
Hot Water
Temperature Adjustment Screw
Temperature Adjustment Locknut
Actuator
Mixing Chamber
Cold Water Seat
Cold Water
Hot Water Seat
Plunger
Installation Instructions n
NOTICE
1. Installation should be in accordance with acceptable plumbing
practices. Flush all piping thoroughly before installation. Installation
and field adjustment are the responsibility of the installer.
2. Valves are to be installed as close to building inlet supply as
possible to prevent/minimize pressure fluctuations.
3. Valve body can be rotated to install in multiple positions due to
union inlets (see Figure 2). Make sure that union nuts are tightened
securely.
4. Connect inlets and outlet and check for leaks.
Figure 2
Back Outlet
!
CAUTION
5. When the HydroGuard supplies tempered water to self-closing and/
or solenoid valves, provide a shock absorber (Powers Part No. 460-
353) on the discharge line.
6. Before use, check discharge temperature. Reset if
necessary.
OPERATION CHECK:
After HydroGuard is installed, make certain the supply stop valves and
strainers are free of debris, clean and ready for operation by disassembling checkstops as shown in servicing.
Front Outlet
2
Top Outlet
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