Units With Fans With Available Pressure For Indoor Installation (Option 11); Fan Discharge Connection; Applicable Rules For Units Incorporated Into An Air Duct System; Electrical Data For 61Af Units With Option 11 - Carrier AquaSnap 61AF 022 Installation, Operation And Maintenance Instructions

13 - UNITS WITH FANS WITH AVAILABLE PRESSURE FOR INDOOR
INSTALLATION (OPTION 11)
This option applies to 61AF units installed inside the building in a
plant room. For this type of installation the cold air leaving the
air-cooled evaporators is discharged by the fans to the outside of
the building, using a duct system.
The installation of a duct system at the air evaporator discharge
line causes a pressure drop due to the resistance caused by the
air flow.
Therefore more powerful fan motors than those used for the
standard units are installed in the units with this option. For each
installation of a unit installed inside a plant room the duct pressure
drops differ, depending on the duct length, duct section and
direction changes.
61AF units equipped with fans with available pressure are
designed to operate with air discharge ducts with maximum
pressure drops of 100 Pa.

13.3 - Electrical data for 61AF units with option 11

61AF - unit with option 11 (without hydraulic module)
Power circuit
Nominal power supply
Voltage range
Control circuit supply
Maximum start-up current (Un)
Standard unit
Unit with electronic starter option
Unit power factor at maximum capacity
Maximum unit power input
Nominal unit current draw (3)
Maximum unit current draw (Un)
Maximum unit current draw (Un-10%)*
Customer-side unit power reserve
Short-circuit stability and protection
(1) Maximum instantaneous start-up current (maximum operating current of the compressor + fan current + locked rotor current of the compressor).
(2) Power input, compressor and fan, at the unit operating limits (saturated suction temperature 10°C, saturated condensing temperature 65°C) and nominal voltage of
400 V (data given on the unit nameplate).
(3) Standardised Eurovent conditions: condenser entering/leaving water temperature = 40°C/45°C, outside air temperature db/wb = 7°C/6°C.
(4) Maximum unit operating current at maximum unit power input and 400 V (values given on the unit nameplate).
* Maximum unit operating current at maximum unit power input and 360 V.
(1)
(2)
(2)
(4)

13.1 - Fan discharge connection

A square flange is supplied mounted on the unit. An available
standard round flange can easily be installed at the fan discharge,
if the installer prefers the use of a round connection duct.
The unit is supplied with a grille on the discharge side. This grille
has to be removed before connection to the duct system.
It is advisable to make the connection to the duct system with a
flexible sleeve. If this recommendation is not observed, a lot of
vibration and noise may be transmitted to the building structure.
13.2 - Applicable rules for units incorporated
into an air duct system
Ensure that the suction or discharge inlets are not accidentally
obstructed by the panel positioning (e.g. low return or open doors
etc.).
035
V-ph-Hz
V
A 133,5
A 72,5
0,82
kW 16
A 22
A 29
A 31
Customer reserve at the 24 V control power circuit
045 055
400-3-50
360-440
24 V, via internal transformer
173,5 204,5
93,3 103,7
0,82 0,82
21 24
25 30
34 40
37 44
See table on page 18
075 105
159,5 244
106,5 147,5
0,82 0,82
33 48
44 59
57 81
62 87