General Information
Please read these instructions carefully and ensure that the mixing valve is
installed to Local Authority Regulations.The Heatguard®Planar thermostatic
mixing valves are suitable for use on low pressure hot and cold water
supplies down to a minimum of 0.2 Bar dynamic pressure (2 metre head)
when used with the appropriate low pressure shower heads. For best
performance the recommended dynamic pressure range is 0.5 - 2.0 Bar
(5 - 20 metres head) with a pressure loss ratio of no more than 2:1. The
thermostatic shower is factory preset to 41°C ± 3°C with a balanced flow
pressure of 2 bar. If the maximum temperature setting is affected due to
special installation conditions, the thermostat can be adjusted on site to
compensate.
Specification
Planar 230 Planar 330 Planar 430 Planar 530
Minimum flow
pressure: 0.2 Bar 0.2 Bar 0.2 Bar 0.2 Bar
Test pressure static: 16 Bar 16 Bar 16 Bar 16 Bar
Working pressure: 3.5 Bar 3.5 Bar 6 Bar 6 Bar
Maximum pressure
loss ratio: 2:1 2:1 2:1 2:1
Maximum hot water
temperature at the
inlet:
85°C 85°C 85°C 85°C
Recommended stored
temperature: 60°C 60°C 60°C 60°C
Minimum hot/blend
temperature difference
to ensure shut-off on
cold supply failure:
15°C 15°C 15°C 15°C
Factory setting at 2
bar equal pressures: 41°C ± 3°C 41°C ± 3°C 41°C ± 3°C 41°C ± 3°C
Minimum flow rate: 5 LPM 6 LPM 8 LPM 8 LPM
Flow rate at 2.5
Bar: 50 LPM 79 LPM 120 LPM 170 LPM
At flow pressures of over 3.5 Bar, or when the differential is >2:1, it is
recommended that a Reliance pressure reducing valve be fitted in the supply line(s).
Troubleshooting
I can only get hot or cold water from the outlet
Check that the valve is connected up correctly, with the hot and cold
supplies connected the corresponding fittings on the valve.
Check that the supplies are both working correctly.
Check non-return valves and strainers in inlet fittings for blockages and
clean if necessary.
Check that supply conditions are within those stated in the working
parameters at the beginning of this booklet.
I am getting fluctuating mixed outlet temperature
Debris is fouling the valve causing it to become sluggish. Service valve as
per maintenance instructions.
Check non-return valves and strainers in inlet fittings for blockages and
clean if necessary.
I am getting fluctuating and/or poor flow rates
Check non-return valves and strainers in inlet fittings for blockages and
clean if necessary.
Check isolation valves are fully open.
Check that supply conditions are within those stated in the working
parameters at the beginning of this booklet.
I am getting cross flow of hot water into the cold water supply or vice
versa
Check non-return valves and strainers in inlet fittings for blockages and
clean if necessary.
Check that supply conditions are within those stated in the working
parameters at the beginning of this booklet.
The valve will not shut down
Check that the hot supply to mix temperature differential is a
minimum of that stated in the working parameters.
Debris is fouling the valve causing it to stick. Service valve as per
maintenance instructions.
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