7
Normal Operating Conditions:
- inlet dynamic pressures nominally balanced to within 10% of each other during
flow.
- a differential of approximately 50
o
C between the hot and cold inlet temperatures,
and with differentials of 15-35
o
C between the blend setting and either supply.
- daily usage of 1-6 hours.
- installation and usage environment not subject to extremes of temperature,
unauthorised tampering or wilful abuse.
Other Applications
For information on other specific applications or suitability, refer to Kohler Mira Ltd,
for Local Agent.
Disinfection
In applications where system chemical disinfection is practised, chlorine can be used
(calculated chlorine concentration of 50 mg/l (ppm) maximum in water, per one hour
dwell time, at service interval frequency). Such procedures must be conducted strictly
in accordance with the information supplied with the disinfectant and with all relevant
Guidelines/Approved Codes of Practice.
If in any doubt as to the suitability of chemical solutions, refer to Kohler Mira Ltd, or
Local Agent.
Pressures and Flow Rates
For optimum performance, dynamic supply pressures should be nominally equal.
Recommended Minimum Dynamic Supply Pressure: 0.15 bar (0.2 bar healthcare).
Recommended Minimum Flow Rate: 8 l/min at mid-blend with equal dynamic supply
pressures.
Recommended Maximum Flow Rate: 200 l/min at mid-blend (which equates to
maximum pressure loss of 3.5 bar).
Maximum Pressure Loss Ratio*: should not exceed 10:1, in favour of either supply,
during flow.
Maximum Static Pressure is 10 bar.
Recommended maximum flow velocity in pipelines is 2 metres/second.
* Pressure Loss Ratio is determined by subtracting the resistance of the outlet pipework
and outlet fittings from the dynamic pressures of the hot and cold water at the inlets of
the mixing valve. This is at its extreme when the mixing valve is used at its lowest
flow-rate and when the maximum inequality occurs in the pressure of the hot and cold
water supplies.
SPECIFICATIONS
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