AQUA
4
–AGU-1405-E
- 10 -
6
Application
The AQUA
4
units allow creating installations with 2 or 4 pipes. The designation 2 or 4 pipe refers to the system of the water distribution
for each building system.
A 2 pipe system comprises a single supply and a single hydraulic line back to the unit. The terminal units of a system to 2 pipes are
characterized by a single exchanger having the coil function of heating or cooling depending on the operating mode.
The 4 pipe configuration includes hot water supply (with the corresponding return lines) and cold water (with the corresponding return
lines) simultaneously.
Operating modes available for AQUA
4
M units can be mounted on a 2-pipe system:
- Circuit 1, reversible system: production of chilled water for cooling or hot water for heating.
- Circuit 2, hot water per production or total heat recovery for hot water sanitary type for example.
Cooling
Circuit 1
Heating
Hot water
production (DHW)
(DHW)
C Hot
water (DHW)
H Hot
water (DHW)
Circuit 1
Circuit 2
Circuit 2
Circuit 2
Circuit 1
Circuit 1
A
B
D
C
B+D
