Thermostatic bar mixer shower
9
COMMISSIONING (TYPE 3)
The following conforms to
Department of Health (doH), Health Technical
Memorandum HTM 04-01: Supplement Performance specification D 08:
thermostatic mixing valves (healthcare premises)
for when the mixer has been
installed in healthcare premises.
Important: Make sure that all supply pipework has been flushed through before
commissioning.
The maximum temperature should not exceed 41°C.
Start the water flow by rotating the flow control.
Make sure that both the hot and cold water supplies are fully open and at (or near to) their
design temperature and pressures, and are within the requirements as stated.
Make sure the temperatu re control is at the maximum temperature setting.
Allow the shower to run at the maximum temperature setting until the water temperature
has stabilised. Rotate the temperature control until your desired maximum showering
temperature is reached.
The mixer has a temperature stop to prevent accidental rotation to higher
temperatures. This is adjustable to provide a maximum temperature of 41°C
and should be checked on site to guarantee user safety.
After setting the maximum temperature, turn the shower on and off several times and check the
maximum setting is correct. Record the commissioning data on the maintenance record at the
rear of this book in order for the in-service performance of the mixer valve to be assessed.
Finally, check the thermal shut off facility of the valve by performing a thermal shut off test.
Shut off the cold supply.
The flow from the shower should stop immediately or reduce to a trickle in which case the
water temperature should be less than 43°C.
In either case there is no risk of scalding.
If, however, the temperature is above 43°C then it is likely there is contamination in the valve
stopping it from shutting off the hot supply. In this case refer to the maintenance section or
contact Customer Experience.
In domestic installations where D 08 specification is not required, the maximum
temperature setting should not exceed 46°C.
Temperature Adjustment Range
The mixed water temperature can be adjusted from cold through to a top limit (which can be
pre-set during installation – factory set at approximately 38°C) with full anti-scald protection
throughout the range.
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