UK IRE Ventilation Catalogue 25 - Flipbook - Page 6
GENERAL INDEX
AHU connection kit PAH3M-1 for PACi NX
Compatible with R32 or R410A outdoor units.
The Panasonic AHU connection kits offer a wealth of connectivity possibilities, integrating easily into
many systems.
Besides the advantages in terms of indoor air quality, air conditioning offers also an energy saving potential. For example,
uncontrolled ventilation through open windows leads to large amounts of heat being lost to the outside during the heating
season or gained from the outside during the cooling season. Whereas, combining heat recovery with air conditioning can
allow for a high level of comfort whilst reducing the overall operating costs of running air conditioning alone.
The larger area of the comfort range, the better the energy saving opportunities.
System example with AHU connection kit PAH3M-1 and
PACi NX outdoor unit
Main components of mechanical ventilation systems
Exhaust air Outside air
AHU connection kit
Return air
External BMS
Supply air
0-10 V capacity control
PACi NX
outdoor unit
Air handling unit
(AHU)
Demand control on the outdoor unit managed by external 0-10 V signal.
· AHU connection kit contains: IP 65 box with PCBs and
terminal connections mounted inside, expansion valve
and sensors
· Heat exchanger, fan and fan motor to be mounted in the
AHU itself are field supplied
· Air handling unit (AHU)
· Air ducts
· Air distribution elements
Control options
Control option 1.
· The system’s control is simple: control of actual suction
temperature vs. set point
· Control works in the same way as that of any indoor unit
· Fan signal issued by the PCB (OFF while defrosting, for
instance)
Control option 2.
· System control by a 0-10 V control working from an
external BMS that manages the set point for temperature
or capacity. Enhances efficiency by adjusting capacity and
enhances comfort as well
· All signals as standard
0-10 V control
With the 0-10 V demand control the capacity of the outdoor unit can be controlled by 20 steps.
Input voltage* (V)
0
1,0
1,5
2,0
2,5
3,0
3,5
4,0
4,5
5,0
5,5
6,0
6,5
7,0
7,5
8,0
8,5
9,0
9,5
Demand (% of nominal current)
No cut 1)
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
No limit / Full capacity 2)
Indoor unit start / stop
Stop 1)
Start
1) No cut / stop: AHU system / indoor unit is completely switched OFF.
2) No limit: No restrictions applied by BMS to AHU system / indoor unit performance (equivalent to “full-load operation“ of AHU system / indoor unit).
AHU connection kit.
PCB, power trans,
terminal block.
Thermistor x2
(refrigerant: E1, E2).
Optional controller.
Thermistor
(air: TA; 1 sensor).
Wired remote
controller.
CZ-RTC6BL.
6
Timer remote controller.
CZ-RTC5B.
