R32
Split - Air to Water Heat Pump 20220105
6
3.2 Leaving Water Temperature (LWT) Selection
The recommended design LTW ranges for different types of heat emitter are::
For floor heating: 30 to 35
℃
For fan coil units: 30 to 45
℃
For radiators: 40 to 50
℃
The recommended design LTW ranges for different type of cooling emitter are
For fan coil units: 7 to 18
℃
For floor cooling18 to 25
℃
The recommended design water tank temperature for domestic hot water
Water tank: 50 to 55
℃
3.3 Selection of water tank
(
Procured locally by customers
)
Capacity(kW)
4-6kW
8-10kW
12~16kW
Water Tank Volume (L)
100~250
150~300
200~500
Minimum heat exchange area of Stainless steel coil
(
㎡
)
1.4 1.4 1.6
Minimum heat exchange area of enamel coil (
㎡
)
2.0 2.0 2.5
3.4 Selection of water pump
(
Procured locally by customers
)
Type
Recommended Brand
Recommended model
External circulation pump
grundfos
UPMM25-95
wilo
Para25/9
Floor heating mixing water pump
grundfos
UPMM25-95
wilo
Para25/9
DHW water pump
wilo
RS15/6
solar water pump
wilo
Para25/8
3.5 Match table of ODU and Hydronic Box
ODU
Hydronic Box
ACHP-H04/4R3HA-O AHM-P24R2/C9D3A
ACHP-H06/4R3HA-O AHM-P24R2/C9D3A
ACHP-H08/4R3HA-O
AHM-P24R2/C9D3A
AHM-P36R25/C9D9A
ACHP-H10/4R3HA-O
AHM-P24R2/C9D3A
AHM-P36R25/C9D9A
ACSHC-H42A5/ASR2DI AHM-P60R25/C9D9A
ACSHC-H48A5/ASR2DI AHM-P60R25/C9D9A
ACSHC-H60A5/ASR2DI AHM-P60R25/C9D9A
3.6 Optimizing System Design
To get the most comfort with the lowest energy consumption with A-IThermal, it is important to take account of the
following considerations:
Choose heat emitters that allow the heat pump system to operate at as low a hot water temperature as
possible whilst still providing sufficient heating.
Make sure the correct weather dependency curve is selected to match the installation environment (building
structure, climate) as well as ender users demands.
Connecting room thermostats (field supplied) to the hydronic system helps prevent excessive space heating
by stopping the outdoor unit and circulator pump when the room temperature is above the thermostat set point