10
Vertical package air conditionners
Electrical heater
- Important: with this option, the air fl ow controller is compulsory.
- Electric heater assembly in 1 stage, except for 24 kW to 36 kW with
assembly in 2 stages.
- For another stages confi guration, it is necessary to check if it is
possible and the price.
10. O
PTIONS
Batería de dos fi las de agua caliente
The installation of some of these options brings in pressure
drops at air level so it needs to be contemplated in the
selection of fans of higher pressure (optional) or in the
substitution of the standard pulley set with a new set that
contributes a higher turn speed to the pad.
The direction of the water fl ow must be correct and so the following
indications must be observed:
V-220004
- Coil fi lling:
• The
coil
fi lling must be made with the purger open until water runs
through it, which is when it is time to close it.
• Cut off the water supply and let the bubbles generated go up to the
highest coil point, which is the same as the purger, and eliminate
by opening the purger.
• Pour more water into the circuit and repeat the previous steps.
• Activate the water pump (to be foreseen by the installer) and
repeat the previous steps until no air noises are heard in the ducts,
which is when the fi lling of the installation will have been fi nished
successfully.
- In case of long unit stops, and forcibly if they happen in the winter
season, the coil must be emptied.
- Possible water freezing must be avoided: glycolling water or by using
anti-frost thermostat that triggers the circulation pump.
In models 120 and 160 the hot water coil assembly is carried out inside
the unit. In the rest of models the assembly is carried out in duct.
HOT WATER COIL
BATTERIE D’APPOINT
BATERÍA DE APOYO
HOT WATER COIL
BATTERIE D’APPOINT
BATERÍA DE APOYO
Access to the indoor
of the frame through
this lateral panel
In models with two supply outlets (two frames), the electrical heaters
are distributed as symmetrically as possible between both frames.
Condensation pressure control
This control is advisable for units that work in cooling with an outdoor
temperature below 15º C. In units with centrifugal fan a check is
performed per damper in the fan outlet. A servomotor opens or closes
the damper depending on the proportional signal 0-10V received from
the electronic control system.
Air quality probe (optional)
This probe is for installation in the environment or in duct to enable
measuring CO
2
and/or volatile compounds.
This probe is to be connected by the client. The clamps on the terminal
board on the main panel used for the connection are indicated on the
wiring diagram provided with the unit.
This probe is supplied inside the main electric panel.
Air fl ow control (optional)
Differential pressostat that measures the fl ow variation in the air outlet.
This allows the detection of fan belt breakages, since the fan relay only
detects operating faults that have arisen in the motor.
This safety device is compulsory in units with electrical heaters.
Summary of Contents for 50NF
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