I.Introduction

GRAD FCU mainly consists of centrifugal fan and heat exchanger etc., which is one of the terminals in the central air conditioning system. It has been widely applied in air conditioning occasions of civil or industrial buildings with large space or of multiple rooms like hotel, restaurant, factory, exhibition hall, shopping mall and office buildings. It can meet the requirements of cooling, dehumidification and heating etc., which can create a fresh, quiet and year-round balmy working and living conditions.

Featurs:Safe and reliable, long life span;

High efficiency and full energy;High air volume and low noise

Standards:

GB/T19232-2003     《Fan coil unit》

GB50243-2002       《Ventilation and air conditioner project construction quality stadards 》

GB50736-2012       《Civil building heating ventilation and air conditioning design specification》

 All specifications meet national standards;And parts of specifications are better than natioanl standards. 

II.Advantages

1、Reasonable  structure design

2、The product cost-effective is higher 15% than national standards.

3、 Adopt high quality copper tube aluminum fin structure with φ7 and φ9.52 copper;One step shapping.

4、 There is drainage slope.

5、 The edges of parts designed intp arc shape.

III.Features for FCU

Safe and reliable, long life span

The heat exchanger of each FCU has been tested by leak-check at working pressure. The water in/outlet (water collecting head) applies forging brass structure, which is reliable and durable. The water condensing plate is painted to avoid rust. All the materials are fireproofing. The motor applies super low noise bearing, which can keep working for as much as 35000 hours without adding oil or maintenance. The thin and long bearing for the motor has been treated specially to avoid rust.   

High efficiency and full energy

The cooling coils adopts double flanging aluminum fin being strung by seamless red copper tube and they are expanded into one to improve the heat transferring efficiency and to enrich the heating and cooling capacity.

High air volume and low noise

It adopts super wide volute and steel plate made multiple blades centrifugal fan. There are many  priority matching methods for fan and motor, which can meet requirements of various FCU models. IV.Structure featurs   

 （1）Cooling coil：

Adopt high quality copper tube aluminum fin structure with φ7 and φ9.52 copper;One step shapping.

 Fin punching double flanging, sine corrugated ,window aluminum fin with small water resistance and air resistance.

The testing pressure is above 2MPa to keep running under 1.6MPa.

（2）Fan：

It is low noise metal fan with double air inlet blades.The material of case is galvanized.

 Fan volute is joint type to improve the aerodynamic performance and reduce the noise

 The motor is 3 speeds.It can be protected for over heating to avoid damage motor.

（3）Bearing

No need oil and maintenance

（4）Water dish:

 There is drainage slope.One step shapping with painting.It is high strength,no leakage,anti-corrosion.

（5）Casing：

 The casing adopt galvanized or aluminum and galv.plate.There is insulation to prevent cooling bridge or condenser.

V.Main production equipments：

 ① High speed fin production line 4 sets;

②High precision multi-station CNC turret punch press 2 sets，normal punch press 10sets；

③Laser cutting machine 2sets, CNC hydraulic bending machine  4 sets, shearing machine 4 sets

④Vertical  expansion tube machine 2 sets

⑤ Auto welding machine；

⑥Programmable automatic bending machine 4 sets；

⑦Plate chain production line Max production 200000sets for fan coil 2sets  

 Delivery test

All products should be tested before delivery to insure safe running.

Installation

Installation and using instructions

1. The vertical unit shall be installed on horizontal level and kept vertical, without slope. When installing the horizontal unit, the 4 lifting points shall keep the unit horizontal and avoid the condensing water flowing out while one side is higher than the other.

2. There shall be valves on the water in/out pipes to regulate and mend. And pay attention to the cleaning and warming for the water in/out pipes. Keep the plastic condensing water pipes smooth without dead turn and flattening.

3. Start at the high speed when turning on the three-way switch and then choose other speed. Control single unit when using multiple units.