Carrier 48NET Bedienungsanleitung PDF herunterladen (Seite 14)

DRAIN CONNECTIONS

Install drains to meet the local sanitation codes. If adequate gravity

drainage cannot be provided, a field installed condensate pump

accessory should be used. Refer to the Installation Instructions of

the condensate pump for detailed specifications.

NOTE: The high wall fan coils have internal condensate trap.

An external trap is not required.

Drain connections may be routed through alternate locations as

shown in Fig. 11.

Pipe holder

Pipe cover

Right piping

Left piping

Pipe cover

Right back piping

Left back piping

A09112

Fig. 11 – Piping Locations

WIRING

The main power is supplied to the outdoor unit. Four field supplied

connecting cables from the outdoor unit to each of the indoor units

are: L1, L2, Ground, and S for communication between the

outdoor unit and each indoor unit.

CONTROL SYSTEM

The 38/40GVM unit is equipped with a microprocessor control to

operate the system and give optimum levels of comfort and

operating efficiency.

There are microprocessor boards and thermistors located in both

the indoor and outdoor units. The thermistors monitor the system

operation and control the operating mode. The change in the

settings or the modes of operation, use the factory supplied

wireless remote control.

The 38/40GVM unit has the following operating modes:

S Fan Only

S Auto

S Heating (on Heat Pumps only)

S Cooling

S Dehumidification (Dry)

FAN ONLY -- In Fan Only mode, the system filters and circulates

the room air without changing the room air temperature.

AUTO -- In Auto mode, the system will automatically select one of

the following operating modes: cooling, heating or fan only based

on the difference between the room temperature and the set point

temperature.

HEATING -- In the Heating mode, the system heats and filters

room air.

COOLING -- When in Cooling mode, the fan runs all the time and

the system cools, dries and filters room air.

DEHUMIDIFICATION (DRY) -- in Dehumidification (Dry)

mode, the system dries, filters and slightly cools room temperature.

This mode does not take place of a dehumidifier.

In addition to the above modes that are selected by using the

remote control, the unit can run in emergency mode by using a

manual button. This mode is used when the remote is misplaced or

the batteries in the remote have died. In this mode, the unit will run

in AUTO mode with a predetermined set point (76_F/24.4_C)

WIRELESS REMOTE CONTROL

1. A wireless remote control is supplied for system operation.

2. Each battery--operated wireless remote control may be used

to control more than one unit.

3. The wireless remote control has a range of 25 ft. (7.6 m).

SEQUENCE OF OPERATION

Simultaneous heating and cooling is not allowed. At start--up, the

first indoor unit to call for operation (heating or cooling) will

control from the preset position, the mode of operation for the rest

of the indoor units connected to the same outdoor unit. If the other

units conflict in mode with the first unit an error message will be

displayed on those units.

When a unit is set to COOL, HEAT or DRY mode, the electronic

expansion valve is first initialized (closed) and then is opened to a

preset position.

Superheat heat for each fan coil (the ones that are energized) is

monitored and the position of the electronic expansion valve is

adjusted to ensure that each fan coil gets the appropriate amount of

refrigerant to maintain the required superheat. After the set point is

satisfied and the fan coil shuts off, the electronic expansion valve

stays open for a specified time to ensure that system pressures

equalize.

When the system is set for COOL, HEAT or DRY mode, the

compressor speed is varied by comparing the indoor air

temperature with the set point and continuously adjusting the

compressor speed (to keep the compressor running as long as

possible) in an effort to maintain the greatest comfort possible.

The indoor fan can be running in MANUAL or AUTO mode.

When the fan is running in AUTO mode, the speed is determined

by comparing the room temperature to the set point.

In COOLING mode, when the set point is satisfied, the fan will

continue running. In HEATING mode, when the set point is

satisfied, the fan speed will be reduced and then will run

continuously until the coil temperature drops to a point cold air is

blown on the occupants in the space, at which time the indoor fan

is de--energized.

When the unit goes through the defrost cycle, the indoor fans are

de--energized and the refrigerant is circulated through all the fan

coils (even if they were off or on standby before the defrost cycle)

to maximize the heat transfer surface area available for defrost

operation.

38/40GVM

1 2 ... 9 10 11 12 13 14 15 16 17 18

Kommentare zu diesen Handbüchern

Keine Kommentare

Carrier 48NET Bedienungsanleitung Seite 14

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Split-System-Klimaanlagen Carrier 48NET