Single Duct Variable Air Volume Unit :: SINRO Air-conditioning Group Company Limited

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　Catalog > TERMINAL EQUIPMENT > Variable Air Volume Unit

　　NAME： Single Duct Variable Air Volume Unit

　MODEL： VAV-TU

　　SIZE：

FEATURES:

Sinro VAV box can be used in low pressure or medium static pressure, single duct or double-duct system.

1. 0.8mm galvanized steel casing;

2. Can match with pneumatic Control, Analog Electronic Control or Direct Digital Control (DDC);

3. Precise size of coated galvanized steel damper plate, perfect air proof;

4. Leakage is less than 1% of max air volume at 1000Pa inlet static pressure;

5. 25mm fiberglass heat insulation layer with antiseptic treatment, in compliance with UL1181 and NFPA90A standard;

6. Applied to constant air volume air handling unit or variable air volume air handling unit.

TU-1 STANDARD TYPE SINGLE DUCT VAV BOX

TU-1 standard type (square inlet and round outlet) VAV box is made by galvanized steel, and mainly used in low/medium pressure, single duct system. It can be controlled in several ways, so it is applied to constant volume system or variable volume system. There are several accessories for choice: water coil heater, electric heater, sound attenuator, multi-outlet static pressure box, medical insulation material.

The controller can be chosen/appointed by customers. They also can choose factory-mounted or to mount by themselves.

There are 11 sizes (04#-08#) with air flow of 40 to 5000 CFM (70 to 8500 CMH) for choice.

DIRECT DIGITAL CONTROL (DDC)

DDC controller is a microprocessor mounted in VAV box. The controller scans all of the inputs, performs complex calculations and commands outputs as required, sometimes communicate with external computers. The operation of the VAV box with DDC controller is completely controlled by software. The requirements can be set in factory or changed on site. All complex calculations can be done with the controller. And it is also applied to detect and control temperature in real time, can also be connected to building automatic system to achieve the functions of intelligent building.

ACCESSORIES

1. HOT WATER COIL HEATER

Hot water coil is installed in the galvanized steel frame, and made by TU-1 VAV box size.

Hot water coil heater is suitable for large size central air conditioning system. If hot water supply is quite convenient, it is also suitable for small system. Every coil connector obtains in accordance with SLIP and DRIVE Standard.

STANDARD CONFIGURATION:

 Galvanized steel frame

 Copper pipe size: DN15

 Test pressure is 1.7MPa

 Coil connectors obtain in accordance with SLIP and DRIVE Standard

 Copper pipes are fixed through ripple aluminum fins in mechanical expanded pipe method. 12 fins/inch



OPTIONAL ACCESSORIES

 Hot water coil (factory-mounted)

 Motorized 2-way or 3-way valve

2. ELECTRIC HEATER COIL

Electric heater coil is suitable for small VAV system, or in the situation of lacking hot water. All electric heater coils are factory-mounted in outspread frame for reducing on site labor cost, and obtain NEC (National Electrical Code).

STANDARD CONFIGURATION:

 First overheat protection (self-reposition)

 Second overheat protection

 Air flow switch (UL Standard)

 Magnetic relay

 Joint box

 Nickel-chrome heating element

 24V transformer

 Hermetic PCB

 Earth wiring terminal (UL Standard)

 Galvanized steel frame

 Fuse (UL Standard)

OPTIONAL ACCOSSORIES:

 Mercury relay

 Fuse transformer

 Fuse

 Manual reposition overheat protection

 Weather protected control panel

3. SOUND ATTENUATOR

Sound attenuator is used in VAV box. It can reduce sound from air flow efficiently. Its connectors obtain in accordance with SLIP and DRIVE Standard (optional accessory).

STANDARD CONFIGURATION:

 0.8mm galvanized steel casing

 Inside galvanized microporous sheet

 Noise reduction material is super-thin fiberglass

 Connectors obtain in accordance with SLIP and DRIVE Standard

4. DAMPER ACTUATOR

Sinro 6Nm damper actuator is suitable for all size VAV boxes usually.

OPTIONAL MODEL:

SRD02-06XXXXXX on/off; floating type on/off or floating control

SRD02-06024E modulating type 0-10V control

Please see details in SRD02 damper actuator specification

5. Controller

Support BACnet or Lon communication

OPTIONAL BRANDS:

Delta controller BACnet communication

Matrix controller Lon communication

Reliable controller BACnet communication

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