7
SPECIFICATION
Normal Operating Conditions
are considered as:
- 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, or
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
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.
Operating Parameters
For Type 3 valves the supply conditions specified in
Type 3 Valves - Application
take
precedence over the operating parameters which follow.
For optimum performance, dynamic supply pressures should be nominally
equal.
