ZEN Circulation Pump high quality Circulation Pump is designed for circulation of liquids in heating and air conditioning systems. Pumps with bronze or stainless steel housings are also suitable for use in hot water systems. Examples of typical applications are a mixed water floor heating system, a hot water circulation system using air energy, a hot water circulation system using solar energy, etc.



◎ Liquid temperature: + 2°C - + 110°C
◎ Maximum ambient temperature + 40°C
◎ Maximum pressure 10 bar.
◎ Protection class: IP44
◎ Connection to power supply: 220V / 50Hz
◎ Insulation class: H
◎ Fluid pumping characteristics: Clean, free of solid and mineral oils, non-toxic, chemically neutral, similar to water properties
◎ Installation: The motor axis should be in horizontal direction
◎ pH: 6,5 - 8,5
◎ Three-speed regulation
◎ Low noise
◎ No leakage
Maximum flow: 10 m3/h
Maximum water pressure: 12 m
ZEN pumps are designed to circulate fluid in heating and air conditioning systems. Pumps with a bronze or stainless steel body are also suitable for hot water systems. Typical applications include hydrothermal/geothermal hybrid heating systems, air-powered hot water circulation systems, solar hot water circulation systems, etc.
◎ The product can be customized according to the customer's voltage and frequency.
◎ Brass pump body, enameled pump body, stainless steel pump body





|
Pos. |
Component | Material |
| 1 | Nameplate | PA6 |
| 2 | Air valve | Brass |
| 3 | O-ring | EPDM |
| 4 | Hex head screws | Steel |
| 5 | Stator housing | Aluminum |
| 6 | Stator | / |
| 7 | O-ring II | EPDM |
| 8 | Rotary can | Stainless steel |
| 9 | O-ring l | EPDM |
| 10 |
Impeller Shaft Thrust bearing Radial bearing |
PESG30 Ceramics Graphite Ceramics |
| 11 | Pump housing | Cast iron |
| 12 | Terminal box cover | ABS |
| 13 | Condenser | / |
| 14 | PCB | / |
| 15 | Self-tapping screw | Stainless steel |
| 16 | Capacitor bracket | ABS |
| 17 | Screws | Steel |
| 18 | Terminal box base | PA66G30 |
| 19 | Terminal box seal | EPDM |
| Model | Dim.(mm) |
Unions or flange |
N.W (kg) | ||||||||
| H | H1 | L | G | B | D1 | D2 | D3 | D4 | |||
| ZEN15-4-130 | 120 | 105 | 130 | G¾" | 125 | _ | _ | _ | _ | G¾"to G½" | 2.3 |
| ZEN15-6-130 | |||||||||||
| ZEN15-9-140 | 125 | 102 | 140 | G¾" | 105 | _ | _ | _ | _ | G¾"to G½" | 2.6 |
| ZEN20-4-130 | 125 | 105 | 130 | G1" | 130 | _ | _ | _ | _ | G1"to G¾" | 2.5 |
| ZEN20-6-130 | |||||||||||
| ZEN25-4-130 | 125 | 105 | 130 | G1½" | 130 | _ | _ | _ | _ | G1½"to G1" | 2.8 |
| ZEN25-6-130 | |||||||||||
| ZEN25-4-180 | 125 | 105 | 180 | G1½" | 130 | _ | _ | _ | _ | G1½"to G1" | 3 |
| ZEN25-6-180 | |||||||||||
| ZEN32-4-180 | 130 | 105 | 180 | G2" | 130 | _ | _ | _ | _ | G2"to G 1¼" | 3.4 |
| ZEN32-6-180 | |||||||||||
| ZEN20-12-180 | 160 | 135 | 180 | G1" | 150 | _ | _ | _ | _ | G1"to G¾" | 4.6 |
| ZEN25-8-180 | 160 | 130 | 180 | G1½" | 150 | _ | _ | _ | _ | G1½"to G1" | 4.8 |
| ZEN25-12-180 | |||||||||||
| ZEN32-8-180 | 170 | 130 | 180 | G2" | 150 | _ | _ | _ | _ | G2"to G 1¼" | 5.2 |
| Model | Speed |
Input power P1(W) |
Current(A) | Condenser |
Distance between pipes (mm) |
MAX. EFFORT (m) |
All elevator (m) |
MAX. FLOW (m3/h) |
Inter Boxing |
Outer box |
20" Loading Qty(pcs) |
||||||
| μF/450V | μF/250V | ||||||||||||||||
| 220V 50Hz | 220V 60Hz | 127V 60Hz | 220V 50Hz/60Hz | 127V/60Hz | G.W (kg) | Dim. (L×W×H) | PCS/CTN | Dim. (L×W×H) | G.W. (kg) | ||||||||
| ZEN15-4-130 |
3 2 1 |
60 45 30 |
0.26 0.20 0.13 |
/ | / | 2 | / | 130 | 4 | 0~4 | 2 | 2.5 | 150x130x140 | 8 | 320×280×300 | 21 | 6664 |
| ZEN15-6-130 |
3 2 1 |
90 65 45 |
0.40 0.30 0.20 |
0.40 0.30 0.20 |
0.80 0.65 0.4 |
2.5 | 6 | 6 | 0~6 | 2 | |||||||
| ZEN15-9-140 |
3 2 1 |
120 85 60 |
0.48 0.38 0.26 |
0.48 0.38 0.26 |
0.95 0.66 0.45 |
3 | 10 | 140 | 9 | 0~9 | 1.6 | 2.8 | 180x120x135 | 8 | 380×260×290 | 23 | 5880 |
| ZEN20-4-130 |
3 2 1 |
60 45 30 |
0.26 0.20 0.13 |
/ | / | 2 | / | 130 |
4 6 |
0~4 0~6 |
2.2 2.2 |
2.7 | 150x130x140 | 8 | 320×280×300 | 22 | 6664 |
| ZEN20-6-130 |
3 2 1 |
90 65 45 |
0.40 0.30 0.20 |
0.40 0.30 0.20 |
0.80 0.65 0.4 |
2.5 | 6 | ||||||||||
| ZEN25-4-130 |
3 2 1 |
60 45 30 |
0.26 0.20 0.13 |
/ | / | 2 | / | 130 | 4 | 0~4 | 3 | 3.0 | 150x130x140 | 8 | 320×280×300 | 25 | 6664 |
| ZEN25-6-130 |
3 2 1 |
90 65 45 |
0.40 0.30 0.20 |
0.40 0.30 0.20 |
0.80 0.65 0.4 |
2.5 | 6 | 6 | 0~6 | 3 | |||||||
| ZEN25-4-180 |
3 2 1 |
60 45 30 |
0.26 0.20 0.13 |
/ | / | 2 | / | 180 | 4 | 0~4 | 3 | 3.2 | 200x130x155 | 8 | 415×280×330 | 26 | 4800 |
| ZEN25-6-180 |
3 2 1 |
90 65 45 |
0.40 0.30 0.20 |
0.40 0.30 0.20 |
0.80 0.65 0.4 |
2.5 | 6 | 6 | 0~6 | 3 | |||||||
| ZEN32-4-180 |
3 2 1 |
60 45 30 |
0.26 0.20 0.13 |
/ | / | 2 | / | 180 | 4 | 0~4 | 3.5 | 3.6 | 200x130x155 | 8 | 415×280×330 | 30 | 4800 |
| ZEN32-6-180 |
3 2 1 |
90 65 45 |
0.40 0.30 0.20 |
0.40 0.30 0.20 |
0.80 0.65 0.41 |
2.5 | 6 | 6 | 0~6 | 3.5 | |||||||
| ZEN20-12-180 |
3 2 1 |
245 210 140 |
1.04 0.92 0.63 |
1.04 0.92 0.63 |
1.80 1.60 1.10 |
6 | 20 | 180 | 12 | 0~12 | 3 | 4.8 | 200x160x180 | 4 | 415×340×200 | 20 | 3200 |
| ZEN25-8-180 |
3 2 1 |
200 185 145 |
0.83 0.78 0.62 |
0.83 0.78 0.62 |
1.65 1.55 1.45 |
6 | 15 | 8 | 0~8 | 7 | 5.0 | 21 | 3200 | ||||
| ZEN25-12-180 |
3 2 1 |
245 210 140 |
1.04 0.92 0.63 |
1.04 0.92 0.63 |
1.80 1.60 1.10 |
6 | 20 | 12 | 0~12 | 3.5 | |||||||
| ZEN32-8-180 |
3 2 1 |
245 210 140 |
1.04 0.92 0.63 |
1.04 0.92 0.63 |
1.80 1.60 1.10 |
6 | / | 8 | 0~8 | 10 | 5.4 | 22 | 3200 | ||||