Article reference KA-01337
The model of the heat pump can be found on the data badge on the casing of the unit.
For example, SI 14 ME would be - ground source heat pump, internally installed, 14kw, single phased with a WPM controller mounted onto the heat pump.
If the model had been SI 14 MER would be the same as the above but with an added feature, the R advises us it is a reversible unit.
HEAT PUMP MODEL BREAKDOWN
First Letter:
L = AIR SOURCE HEAT PUMP
S = GROUND SOURCE HEAT PUMP
W = WATER SOURCE
Second Letter:
A = Externally Installed (Outside of property)
I = Internally installed (Within property)
Third Letter (If applicable):
K = COMPACT UNITS. Normally with an integrated Buffer/Cylinder.
H = HIGH TEMPERATURE UNIT
S = SWIMMING POOL
B = BASIC MODEL
The number indicates the kW rating under test conditions;
- Air source – A7/W35
- Ground source – B0/W35
Fourth Letter:
M = SINGLE PHASED SUPPLY
T = THREE PHASED SUPPLY (used to be A some time ago)
Fifth Letter:
U = WPM ECON/ECON R CONTROLLER.
S = WPM CONTROLLER. This is separate from the heat pump.
E = WPM CONTROLLER. Enclosed within the heat pump itself.
I = INVERTER
Additional Letter/Symbol:
R = REVERSIBLE. These pumps can be used for both heating and cooling. Very rare to find these units.
+ = Second heat exchanger for heat recovery during cooling.
Applicable Models: SI, LA, LI, WA