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RTP.W 572 K
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Emicon RTP.W 572 K [3/5] Roof top r407c

ROOFTOP  R407C

PACKAGED WATER TO AIR ROOFTOP UNITS

WITH SCROLL COMPRESSORS

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Main components:

Structure made of a base-frame in carbon steel proles, protected against corro-

sion by an epoxy powder primer, kiln-polymerized, painted with polyester pow-

der.

The structural frame is made in aluminium proles and complete with aluminium

panels; the internal sheet plates, between the dierent sections, are made of gal-

vanized steel plate.

The external panels of the sections crossed by the treated air are of sandwich

type with the internal surface in galvanized steel plate, insulated by a high-den-

sity foam polyurethane sheet. The parts of the base-frame and the internal steel

plates licked by the treated air are thermally insulated with close-cell insulating

material.

The external panels can be easily dismantled, so to allow the access to all the

in-built components. The customer can access to the main components of the

cooling circuits, to the air lters and to the electrical board through hinged doors

and ¼ turn closures, so to make the maintenance operations easier.

High-eciency scroll compressor (COP 3.37 under ARI conditions), with low

sound level, internal heat protection, installed on rubber vibration dampers, sup-

plied with crankcase heater when necessary.

Being 2 circuit units, in case of problem on one of the circuit, the 50% operation

of the unit is anyway granted.

Air treatment coils made in copper pipes suitable for refrigerating liquids and

high eciency aluminium ns. There is a stainless steel drip pan for condensing

coil.

Water cooled plate exchangers made in AISI 316L stainless steel, vacuum weld-

brazed in oven with pure copper at 99,9%. In the case the exchangers should

work as evaporators, they are thermally insulated with close-cell anti-condensing

material.

Filtering section made of washable pleated lters in polyester with G4 met-

al frame (in conformity with EN779:2002 standard); the ltering cells are easily

removable, through a hinged opening door, for the periodical cleaning and re-

placement operation.

Air discharge fan section with double-suction forward centrifugal fans, stati-

cally and dynamically balanced, installed on rubber-type vibration dampers. The

fans are driven, through belt and pulley transmissions, by 4-pole tri-phase electri-

cal motors on slides; the motor pulley is of variable diameter type. It is also pro-

vided with a device switching o the unit in case of accidental stop of the fan.

The units are realized with two cooling circuits to increase their reliability and

to adjust the cooling capacity to the real requirements, keeping a high energy

eciency. Each circuit is made by a thermostatic expansion valve with external

equalizer, liquid sight glass, safety valve, high and low pressure switches, high and

low pressure gauges; in case of heat pump version, besides the above compo-

nents, there are also a liquid receiver with shut-o valve, an additional thermo-

static valve for winter operation, the 4-way valve for the cycle inversion and check

valves on the liquid line.

Electrical board compliant to CE standard, complete with lock-door main

switch, fuses for compressors, remote control switches, protection switches for

the centrifugal fans motor, low tension auxiliary circuit and terminal board.

All units are provided with electronic microprocessor so to automatically man-

age all the functions of control, status alarm and diagnostics.

The units are supplied complete with R407C refrigerant charge and non-freezing

oil.

Before delivery, all units are factory tested.

The units are made in conformity with the European standards in force (73/23/

CE – Low tension Directive, 89/336/CE – Electromagnetic compatibility Directive,

97/23/CE – PED Directive and 8/37/CE – Machine Directive).

Accessories

1M-2M Centrifugal fans with higher available pressure: in case of

ducts with high pressure drops, it is necessary to increase the avail-

able pressure to the inlet and outlet centrifugal fans, increasing

the power of the electrical motor and consequently adjusting the

transmission.

AF Clogged lters alarm: dierential pressure switch detecting an

excessive pressure drop on the air lters due to their dirtiness; the

control system of the unit displays the problem, without anyway

switching o the unit.

AFL Smoke alarm: in case of smoke, detected by an optical sensor, the

unit is switched o and the eventual motorized dampers will be

suitably positioned.

BC Hot water heating coil: coil with copper pipes, aluminium ns

and copper manifolds, used for the winter heating, The coil is fed

by external hot water through a suitable 3-way mixing valve, con-

trolled by the microprocessor.

BC1 Water post-heating coil: coil with copper pipes, aluminium ns

and copper manifolds, placed afterwards the evaporating coil; this

coil is used to keep the air temperature within the requested value,

when the evaporator is used to lower the value of the ambient rela-

tive humidity. The coil is fed by external hot water through a suit-

able 3-way mixing valve, controlled by the microprocessor.

BG Hot gas post-heating coil: coil with copper pipes, aluminium ns

and copper manifolds; this coil is used to re-adjust the air tempera-

ture to the requested value, when the evaporator is used to lower

the value of the ambient relative humidity. The coil is supplied by

the hot gas coming out from the compressor, through a solenoid

valve controlled by the microprocessor, therefore there is no need

for external heating sources.

F Free cooling operation: on the base of the comparison between

the internal and the external temperature, the microprocessor

controls the motorized dampers, so to use, in the best way, the

energy in the external air to satisfy the heating loads. In this way,

the working time of the compressors and of the external fans is

remarkably reduced and, as a consequence, also the electrical con-

sumption. On demand, it is possible an enthalpy control of free-

cooling, so to use the external air for controlling the internal relative

humidity, when possible. In case the unit is also equipped with heat

recovery, the standard version will be provided with 3 dampers. On

demand, it is possible to supply a 5 damper version (to be selected

on purpose).

F5 F5 Pleated lters: glass bre washable pleated lters with F5 met-

al frame (in conformity with EN779:2002). The lters are placed at

the inlet of the air treatment coil, instead of the standard G4 lters.

On request, so not to have high pressure drops, it is possible to have

G4 or F5 ltering cells with a thickness of 98 mm, instead of 48 mm

as per standard units.

FT High-eciency bag lters: Rigid bag lters with ltering ecien-

cy F7 (in conformity with EN779:2002), complete with G4 pre-lters

(in conformity with EN779:2002). The lters are placed at the inlet of

the air treatment coil, so to assure a high ltering eciency, without

too high pressure drops. The length of the unit will increase of 500

mm.

H Humidier: steam production equipment of immersed electrode

type, installed inside the unit and controlled by the microproces-

sor on a ON/OFF basis, so to keep, when necessary, the value of

the treated air relative humidity within the pre-set limits. The steam

produced by this equipment is distributed in the air through a suit-

able diuser.

IH RS 485 serial interface: electronic card allowing the connection

of the unit to a supervision system, so to completely control it from

a remote working station. On demand, it is possible to connect the

unit to supervision systems with dierent communication proto-

cols.

Emicon RTP.W 572 K [3/5] Roof top r407c

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