Shoebox Heat Pump Manual Version 9.4
Page 28 of 40
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4.7.2 Weather Compensation.
All Kensa Shoebox Heat Pumps are supplied with Weather Compensation as standard. This facility will re-
duce the return water set
-
point against a schedule of external ambient temperatures. In more simple
terms, the temperature of water flowing into the building
’
s radiators or underfloor heating is reduced in
mild weather, which allows the heat pump to run more efficiently. This is particularly important with radi-
ators, as much higher temperatures are required. In cold weather, many people already turn up the
temperature of water flowing from their boiler by hand and are therefore weather compensating their
heating system manually.
To enable weather compensation (if required) on your heat pump the sensor should be installed and
weather compensation enabled within the controller .
The weather compensation sensor is supplied in a small waterproof enclosure.
Kensa strongly suggest that the heatpump should be run for at least one week after commissioning,
before the weather compensation is activated, to enable the client to become use with living with a heat
pump and understand the buildings heating profile.
This sensor needs to be fixed to a North
-
facing wall, and connected with 2 core 0.5 mm cable, unshielded,
to the heat pump. The cable should be routed inside the heat pump case and connected to the main pcb
terminals. The weather compensation should then be left disabled. If weather compensation is required
this should then be enabled within the controller.
Small green terminal
block
Weather compensation
sensor
Waterproof container
sensor
Green Terminal
block
Main terminal block
Fig 24 Weather
compensation sensor
