Maintenance Procedure; Hot Water Cylinder - Samsung RC090-120-140 Installation And Maintenance Manual

Maintenance Monobloc Systems
The Samsung heat pump should be maintained at least once a year to comply with warranty
and RHI. The warranty card also doubles up as a maintenance sheet.

Maintenance procedure

Stop the unit, clean the strainer or magnetic filter in accordance with manufacturer's
recommendations and replace it.
Test the concentration of the Anti-freeze (glycol) in the system using a Glycol tester the level
should be 25%. If you don't have a glycol tester a glycol tester / refractometer can be bought
from your heat pump supplier or online.
Refill the unit, pressure should be 1 -2 bar,
We need to test the operation of the unit against the hot water cylinder. So first we need to
draw off 50 liters of water, run a couple of taps for 5 mins to achieve this. The unit should start
up automatically in hot water mode, if it doesn't press the top right button on the controller, in
3-4 mins it will start heating the cylinder, a coke can symbol will show in the status section of
the remote controller.
The heat pump should be able to achieve 48C cylinder temperature without using the
immersion heater.
While running, check the outdoor unit for damage & debris, the coil needs washing, we
recommend you use an approved EHS heat pump cleaning chemical, your distributor will
stock this. Instructions are given on the bottle. You also need to clean and polish the outside
casing we recommend car wax to do this.

Hot water Cylinder:

Press the silver immersion button on the Samsung remote controller; this will force the
immersion heater on. Check immersion heater works properly, Measure the current drawn by
the heater; it should be 12-13 Amps.
Measure the temperature of the flow using the remote controller.
Measure the flow rate from the flow meter.
With the unit running flat out measure the temperature of the air as it enters the coil and the
temperature of the air in the garden. They should be the same check cold air is not
recirculating.
Check electrical connections & sensor are fixed properly and the
overheat thermostat is set to 70C.
Overheat Thermostat
Adjustment
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