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Инструкция по эксплуатации Страница: 21

Airwell VLS 904 [21/85] Installation

Page 20

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4.8 Connecting plate-type evaporator

temperature sensors

VLS and VLH units are provided with fittings for

hydraulic connections between heat exchangers

and plant. Each fittings is complete with sensor well

4.9 Total heat recovery features

Temperature sensors

Temperature sensors for recovery system water con-

trol, BTRin e BTRout, are supplied by factory with

the unit, already wired, and must be fitted on the

water connections at the heat reclaim condenser

inlet and outlet (see wiring diagram).

Three-way valve

The three-way valve must be installed on-site. It per-

mits bypassing the heat reclaim condenser for cor-

rect operation at low return water temperature.

Water and electrical connections, as well as ther-

mal insulation must be made at the time of installa-

tion on-site.

The best position is close to heat reclaim condenser

(to achieve a small water circuit).

NOTE: The space required by this valve does not

permit installation on the factory

Forced shuttering

When recovery system is on, a commutation from

air condensing and water condensing takes place.

At the same time compressor-tandem is automatical-

ly shuttered to allow the control of condensation in

the transient phase. The same process takes place

when the system commutates from water conden-

sing to air condensing.

to fasten temperature sensor (BT-IN and BT-OUT).

Fittings are supplied separate and must be mounted

during the installation of the unit, as explained in

the instruction below.

1/2” Gas well

Manual exhaust valve

2” 1/2 - 3” manifold fitting

2” 1/2 - 3” Victaulic Flex joint

2” 1/2 - 3” manifold fitting

1/2” Gas well

BT-IN

BT-OUT

OUT

VLS-eng.qxp 12-04-2007 14:43 Pagina 20

Airwell VLS 904 [21/85] Installation

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