11YRS
ZU HOW INDUSTRY CO., LTD
886-5-6223611
886-5-6223077
No.30,Kan Chiao,Ting Hsi Li, Huwei Township, Yunlin County 63250, Taiwan
www.zuhow.com.tw

Products

Dowtherm / Thermal Oil Boilers
DO-20 (GAS、DIESEL、HEAVY OIL)
DO-20

Description
1. We provide the dowtherm boiler with vertical and horizontal models, vertical type reduces space and horizontal type is easy to maintain. However, they are equally efficient in performance.
2. Special flute design can reduce exhausting temperature, reach combustion and heat transfer of the highest efficiency, and no danger of local overheating.
3. For the excellent design of the heating pipe and heat-absorbing disc, the circulating speed of Dowtherm oil is average, its pressure drop is very low, Dowtherm oil does not have local overheating, so as to lengthen its life.
Feature
1. Alarm of liquid level Insufficient.
2. Alarm of Circulation Pump Fail.
3. Dowtherm oil temperature limit.
4. Chimney temperature limit.
5. Pressure differential controller:make sure oil flowing.
6. Safety valve:system valve limit.

Specification

Specification

Model Unit DO-20G DO-20K DO-20H
Type - Vertical
Heat output

×10000

kcal/hr

20 20 20
Max. working temperature 300 300 300
Design pressure kgf/cm2   7 7 7
Boiler dowtherm oil content L 200 200 200
Fuel consumption 13A Gas Nm3/h 23.8 - -
LPG kg/h 20.5 - -
Diesel oil L/h - 28 -
Heavy oil L/h - - 25.4
Burner type - G40S K40S H40S
Electrical Power Capacity KW 7.1 7.1 11.1
Circulation pump HP 7.5 7.5 7.5
Boiler scales Length mm 1570 1570 1570
Width mm 1350 1350 1350
Height mm 2130 2130 2130
Thermal oil dia - 2" 2" 2"
Diameter of chimney mm 200 200 200
Approximate weight kg 1200 1200 1200
1. Standard power is 3Phase/220V/60HZ. Notice of change, if any, is required.
2. Fuel type DO-**G-gas;DO-**K-diesel;DO-**H-heavy oil
3.

Low Heat Level:13A=9900 kcal/Nm3;LPG=11460 kcal/kg

Diesel:8400 kcal/l;Heavy Oil=9260 kcal/l

4. Products may be changed for improvement without notice.
5. Gas supply pressure 13A:200 mmAq;LPG:280 mmAq。

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