Powers HydroGuard ES150XBY Technical Instructions

Technical Instructions

Description

■
Powers external bypass emergency tempering valve system consists of Powers ES
Series emergency tempering valve and an independent external cold water bypass.
Under normal operation the valve will thermostatically blend hot and cold water to
deliver tepid water to emergency fi xtures, quickly compensating for temperature
variations due to changes in inlet temperature.
Powers ES Series valves have a dual internal cold water bypass that ensures cold
water fl ow in the event of valve failure or loss of hot water. In many applications,
the internal cold water bypass capacity is adequate to provide proper operation of
the emergency fi xtures.
The external cold water bypass system ensures an adequate supply of cold water
if the primary valve, under a hot water supply loss or other failure mode, lacks the
volume necessary for the proper operation of the emergency fi xture.
Powers external bypass emergency tempering valve system includes a pressure
regulating valve that will open when the outlet pressure decreases to a level that
indicates a lack of water caused by a failure mode.
Specifi cations
■
Maximum Operating Pressure . . . . . . . . . . . . . . 125psi (861 kPa)
Maximum Hot Water Temperature . . . . . . . . . . 180°F (82°C)
Approach Temperature . . . . . . . . . . . . . . . . . . . . 15°F (8°C) Above Set Point
Temperature Adjustment Range . . . . . . . . . . . . 60 - 95°F (15 - 35°C)
Factory Set Temperature . . . . . . . . . . . . . . . . . . 85°F (29°C)
Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ANSI Z 358-1 1998
Note: Set point cannot be less than the cold water temperature. For best operation, hot and
cold water should be at least 15°F (8°C) from desired set point.

Capacity

■
Flow Capacity at 50-50 Mixed Ratio
Min. Flow
Model
(34 kPa)
Rate*
1.0 gpm 4.0 gpm
ES150XBY
3.8 lpm 15.2 lpm
3.0 gpm 15.0 gpm
ES200XBY
11.0 lpm 57.0 lpm
3.0 gpm 27.0 gpm
ES400XBY
11.0 lpm 102.0 lpm
*Minimum fl ow when emergency bypass valve is installed at or near hot water source with recir-
culating tempered water with a properly sized continuously operating recirculating pump.

Cold Water Bypass Capacity

ES150XBY . . . . . . . . . . . . . . . . . . . . . . . . . 10.0 gpm (37.8 lpm) @ 30psi (207 kPa)
ES200XBY . . . . . . . . . . . . . . . . . . . . . . . . 36.0 gpm (136.3 lpm) @ 30psi (207 kPa)
ES400XBY . . . . . . . . . . . . . . . . . . . . . . . . 52.0 gpm (196.8 lpm) @ 30psi (207 kPa)
* Flow capacity measured with 60psi (414 kPa) cold water supply pressure.
P r e s s u r e D r o p A c r o s s V a l v e
5psi 10psi 20psi
(69 kPa) (138 kPa)
6.0 gpm 9.0 gpm
22.7 lpm 34.1 lpm
20.0 gpm 30.0 gpm
76.0 lpm 113.0 lpm
38.0 gpm 54.0 gpm
144.0 lpm 203.0 lpm
* ■
HydroGuard
With Internal & External Cold Water Bypass
30psi 45psi
(207 kPa) (310 kPa)
14.0 gpm 17.0 gpm
53.0 lpm 64.4 lpm
36.0 gpm 45.0 gpm
136.0 lpm 170.0 lpm
66.0 gpm 80.0 gpm
249.0 lpm 305.0 lpm
IS-P-ES150-200-400XBY
® Series Tempering Valve
Advanced Thermal Activation
WARNING: TO ENSURE THE
ACCURATE AND RELIABLE
!
OPERATION OF THIS PRODUCT, IT IS
ESSENTIAL TO:
• Properly size each valve based on the indi-
vidual application.
• Properly design the recirculation system to
minimize pressure and temperature variations.
• Conduct an annual maintenance program to
ensure proper operation of all critical com-
ponents.
FAILURE TO COMPLY WITH PROPER
INSTALLATION INSTRUCTIONS COULD
CONTRIBUTE TO VALVE FAILURE, RESULTING
IN IN JURY OR DEATH.
60psi
(414 kPa)
20.0 gpm
75.8 lpm
52.0 gpm
197.0 lpm
92.0 gpm
352.0 lpm