Operating Parameters - Rheem Guardian Warm Water Owner's Manual And Installation Instructions

OPERATING PARAMETERS

PRESSURES AND FLOW RATES
For optimum performance, supply pressures should be nominally equal under flow conditions.
Recommended Minimum Supply Pressure: 500 kPa
Recommended Minimum Flow Rate at mid-blend with equal supply pressures (see table below)
Nominal Flow Rate at mid-blend for a maximum pressure loss of 250 kPa (see table below)
Maximum Supply Pressure: 1000 kPa
Model 940 08001 940 16001 940 24001
Minimum Flow Rate (L/min)
8 16 24
Nominal Flow Rate (L/min)
80 160 240
Note: the above pressure/flow graph relates to a single valve unit. For multiple valve units, multiply the flow rate
on the vertical axis by the number of valves to give the total system flow at a given pressure loss.
TEMPERATURES
Minimum Cold Water Temperature: 1°C
Maximum Hot Water Temperature: 70°C*
Minimum Hot Water Supply Temperature: Blend water temperature plus 15°C
Maximum Cold Water Supply Temperature: Blend water temperature less 15°C
Thermostatic Control Range: approximately 25°C - 60°C
Optimum Thermostatic Control Range: 35°C - 50°C
*Note! For optimum performance reasons it is recommended that the maximum hot water temperature is limited
to 65°C.
Caution! During thermal disinfection the mixing valve can operate up to 85°C for short periods. Ensure safety
precautions are followed during discharge. Chemical disinfection agents e.g.chlorine/chloramines combined with
higher temperatures will affect the life of the product adversely and could detrimentally affect the thermostatic
performance.
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