Finding the ideal balance of air quality, climate control and cost-saving
Nic Holm
- 12 min read
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- Calorex Delta series – swimming pool air handling units
Calorex Delta series – swimming pool air handling units
Delta 2-4-6-8-10-12-14-16 swimming pool air handling
The sophisticated Delta air handling units incorporate hybrid heat pump and fresh air dehumidification technology. With dynamic heat recovery to swimming pool water and air using a heat pump, a Delta solution is the ultimate choice for a commercial or public indoor swimming pool.
Interested?
Key features
-
Dynamic heat pump heat recovery to pool and air
-
Self-regulating fresh air control with heat recovery
-
Automatic control of exhaust air volume to match pool usage
-
Free-cooling (Delta 1-2)
-
Free-cooling and heat pump air cooling (Delta 4-16)
-
Integral LPHW heat exchangers for pool and air
-
Controllable rpm EC/inverter fans in all models
-
PLC control with 5.7" touchscreen user interface
-
Remote monitoring/control
-
The minimum security update period for Delta products is zero months
Remote monitoring/control
-
Screen mirroring to Android/iOS mobile devices using third-party app
-
Screen mirroring to web browser with ActiveX
-
BMS interfaces for Modbus, BACnet IP and BACnet MS/TP
-
Wired remote control interfaces
Options
-
Delta 2-6 single or three phase
-
Delta 8-16 three phase only
-
Upgraded LPHW heat exchanger for air heating
-
Left-hand or right-hand orientation (Delta 4-16)
-
Top, side or bottom supply fan outlet
-
Front or rear supply fan outlet (Delta 14-16)
-
Rear exhaust and fresh air connections (Delta 14-16)
-
Connection for RCU (Delta 16)
Product specifications
| Specifications | Units | DT 2 |
|---|---|---|
| Nominal recirculation air flow |
m³/h
|
2,600
|
| Exhaust/fresh air flow (stepped control) |
m³/h
|
130-1,300
|
| Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air |
l/h
|
10.9
|
| Heat to air | ||
| Via heat pump (Mode B) |
kW
|
4.9
|
| Via standard LPHW @ 80°C |
kW
|
22
|
| Via upgraded LPHW @ 55°C |
kW
|
19
|
| Total Mode B + standard LPHW |
kW
|
26.9
|
| Heat to pool water | ||
| Via heat pump (Mode A) |
kW
|
5.5
|
| Via LPHW @ 80°C |
kW
|
23
|
| Via LPHW @ 55°C |
kW
|
11
|
| Total Mode A + LPHW |
kW
|
28.5
|
| Cooling duty | ||
| Total |
kW
|
0
|
| Sensible |
kW
|
0
|
| Nominal power consumed |
kW
|
2.9
|
| R407c gas weight/CO2 equivalent |
kg/t
|
3.0/5.32
|
| Width |
mm
|
1,740
|
| Depth |
mm
|
654
|
| Height |
mm
|
1,685
|
| Weight |
kg
|
310
|
Nominal recirculation air flow
2,600
m³/h
Exhaust/fresh air flow (stepped control)
130-1,300
m³/h
Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air
10.9
l/h
Heat to air
Via heat pump (Mode B)
4.9
kW
Via standard LPHW @ 80°C
22
kW
Via upgraded LPHW @ 55°C
19
kW
Total Mode B + standard LPHW
26.9
kW
Heat to pool water
Via heat pump (Mode A)
5.5
kW
Via LPHW @ 80°C
23
kW
Via LPHW @ 55°C
11
kW
Total Mode A + LPHW
28.5
kW
Cooling duty
Total
kW
Sensible
kW
Nominal power consumed
2.9
kW
R407c gas weight/CO2 equivalent
3.0/5.32
kg/t
Width
1,740
mm
Depth
654
mm
Height
1,685
mm
Weight
310
kg
| Specifications | Units | DT 4 |
|---|---|---|
| Nominal recirculation air flow |
m³/h
|
3,000
|
| Exhaust/fresh air flow (stepped control) |
m³/h
|
150-1,500
|
| Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air |
l/h
|
12.5
|
| Heat to air | ||
| Via heat pump (Mode B) |
kW
|
5.1
|
| Via standard LPHW @ 80°C |
kW
|
25
|
| Via upgraded LPHW @ 55°C |
kW
|
21
|
| Total Mode B + standard LPHW |
kW
|
30.1
|
| Heat to pool water | ||
| Via heat pump (Mode A) |
kW
|
5.8
|
| Via LPHW @ 80°C |
kW
|
33
|
| Via LPHW @ 55°C |
kW
|
16
|
| Total Mode A + LPHW |
kW
|
38.8
|
| Cooling duty | ||
| Total |
kW
|
-4.2
|
| Sensible |
kW
|
-2.9
|
| Nominal power consumed |
kW
|
2.9
|
| R407c gas weight/CO2 equivalent |
kg/t
|
6.0/10.64
|
| Width |
mm
|
1,840
|
| Depth |
mm
|
704
|
| Height |
mm
|
1,970
|
| Weight |
kg
|
350
|
Nominal recirculation air flow
3,000
m³/h
Exhaust/fresh air flow (stepped control)
150-1,500
m³/h
Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air
12.5
l/h
Heat to air
Via heat pump (Mode B)
5.1
kW
Via standard LPHW @ 80°C
25
kW
Via upgraded LPHW @ 55°C
21
kW
Total Mode B + standard LPHW
30.1
kW
Heat to pool water
Via heat pump (Mode A)
5.8
kW
Via LPHW @ 80°C
33
kW
Via LPHW @ 55°C
16
kW
Total Mode A + LPHW
38.8
kW
Cooling duty
Total
-4.2
kW
Sensible
-2.9
kW
Nominal power consumed
2.9
kW
R407c gas weight/CO2 equivalent
6.0/10.64
kg/t
Width
1,840
mm
Depth
704
mm
Height
1,970
mm
Weight
350
kg
| Specifications | Units | DT 6 |
|---|---|---|
| Nominal recirculation air flow |
m³/h
|
4,000
|
| Exhaust/fresh air flow (stepped control) |
m³/h
|
200-2,000
|
| Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air |
l/h
|
16.6
|
| Heat to air | ||
| Via heat pump (Mode B) |
kW
|
6.6
|
| Via standard LPHW @ 80°C |
kW
|
30
|
| Via upgraded LPHW @ 55°C |
kW
|
26
|
| Total Mode B + standard LPHW |
kW
|
36.6
|
| Heat to pool water | ||
| Via heat pump (Mode A) |
kW
|
8.0
|
| Via LPHW @ 80°C |
kW
|
33
|
| Via LPHW @ 55°C |
kW
|
16
|
| Total Mode A + LPHW |
kW
|
41.0
|
| Cooling duty | ||
| Total |
kW
|
-5.5
|
| Sensible |
kW
|
-3.9
|
| Nominal power consumed |
kW
|
3.4
|
| R407c gas weight/CO2 equivalent |
kg/t
|
7.8/13.84
|
| Width |
mm
|
1,840
|
| Depth |
mm
|
704
|
| Height |
mm
|
1,970
|
| Weight |
kg
|
360
|
Nominal recirculation air flow
4,000
m³/h
Exhaust/fresh air flow (stepped control)
200-2,000
m³/h
Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air
16.6
l/h
Heat to air
Via heat pump (Mode B)
6.6
kW
Via standard LPHW @ 80°C
30
kW
Via upgraded LPHW @ 55°C
26
kW
Total Mode B + standard LPHW
36.6
kW
Heat to pool water
Via heat pump (Mode A)
8.0
kW
Via LPHW @ 80°C
33
kW
Via LPHW @ 55°C
16
kW
Total Mode A + LPHW
41.0
kW
Cooling duty
Total
-5.5
kW
Sensible
-3.9
kW
Nominal power consumed
3.4
kW
R407c gas weight/CO2 equivalent
7.8/13.84
kg/t
Width
1,840
mm
Depth
704
mm
Height
1,970
mm
Weight
360
kg
| Specifications | Units | DT 8 |
|---|---|---|
| Nominal recirculation air flow |
m³/h
|
5,000
|
| Exhaust/fresh air flow (stepped control) |
m³/h
|
250-2,500
|
| Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air |
l/h
|
20.8
|
| Heat to air | ||
| Via heat pump (Mode B) |
kW
|
8.0
|
| Via standard LPHW @ 80°C |
kW
|
35
|
| Via upgraded LPHW @ 55°C |
kW
|
30
|
| Total Mode B + standard LPHW |
kW
|
43.0
|
| Heat to pool water | ||
| Via heat pump (Mode A) |
kW
|
10.0
|
| Via LPHW @ 80°C |
kW
|
33
|
| Via LPHW @ 55°C |
kW
|
16
|
| Total Mode A + LPHW |
kW
|
43.0
|
| Cooling duty | ||
| Total |
kW
|
-6.7
|
| Sensible |
kW
|
-4.7
|
| Nominal power consumed |
kW
|
4.4
|
| R407c gas weight/CO2 equivalent |
kg/t
|
7.8/13.84
|
| Width |
mm
|
1,840
|
| Depth |
mm
|
704
|
| Height |
mm
|
1,970
|
| Weight |
kg
|
370
|
Nominal recirculation air flow
5,000
m³/h
Exhaust/fresh air flow (stepped control)
250-2,500
m³/h
Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air
20.8
l/h
Heat to air
Via heat pump (Mode B)
8.0
kW
Via standard LPHW @ 80°C
35
kW
Via upgraded LPHW @ 55°C
30
kW
Total Mode B + standard LPHW
43.0
kW
Heat to pool water
Via heat pump (Mode A)
10.0
kW
Via LPHW @ 80°C
33
kW
Via LPHW @ 55°C
16
kW
Total Mode A + LPHW
43.0
kW
Cooling duty
Total
-6.7
kW
Sensible
-4.7
kW
Nominal power consumed
4.4
kW
R407c gas weight/CO2 equivalent
7.8/13.84
kg/t
Width
1,840
mm
Depth
704
mm
Height
1,970
mm
Weight
370
kg
| Specifications | Units | DT 10 |
|---|---|---|
| Nominal recirculation air flow |
m³/h
|
6,000
|
| Exhaust/fresh air flow (stepped control) |
m³/h
|
300-3,000
|
| Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air |
l/h
|
25.0
|
| Heat to air | ||
| Via heat pump (Mode B) |
kW
|
10.0
|
| Via standard LPHW @ 80°C |
kW
|
38
|
| Via upgraded LPHW @ 55°C |
kW
|
32
|
| Total Mode B + standard LPHW |
kW
|
48.0
|
| Heat to pool water | ||
| Via heat pump (Mode A) |
kW
|
12.5
|
| Via LPHW @ 80°C |
kW
|
40
|
| Via LPHW @ 55°C |
kW
|
20
|
| Total Mode A + LPHW |
kW
|
52.5
|
| Cooling duty | ||
| Total |
kW
|
-8.4
|
| Sensible |
kW
|
-5.9
|
| Nominal power consumed |
kW
|
5.9
|
| R407c gas weight/CO2 equivalent |
kg/t
|
9.0/15.97
|
| Width |
mm
|
1,840
|
| Depth |
mm
|
854
|
| Height |
mm
|
1,970
|
| Weight |
kg
|
410
|
Nominal recirculation air flow
6,000
m³/h
Exhaust/fresh air flow (stepped control)
300-3,000
m³/h
Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air
25.0
l/h
Heat to air
Via heat pump (Mode B)
10.0
kW
Via standard LPHW @ 80°C
38
kW
Via upgraded LPHW @ 55°C
32
kW
Total Mode B + standard LPHW
48.0
kW
Heat to pool water
Via heat pump (Mode A)
12.5
kW
Via LPHW @ 80°C
40
kW
Via LPHW @ 55°C
20
kW
Total Mode A + LPHW
52.5
kW
Cooling duty
Total
-8.4
kW
Sensible
-5.9
kW
Nominal power consumed
5.9
kW
R407c gas weight/CO2 equivalent
9.0/15.97
kg/t
Width
1,840
mm
Depth
854
mm
Height
1,970
mm
Weight
410
kg
| Specifications | Units | DT 12 |
|---|---|---|
| Nominal recirculation air flow |
m³/h
|
7,000
|
| Exhaust/fresh air flow (stepped control) |
m³/h
|
350-3,500
|
| Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air |
l/h
|
29.2
|
| Heat to air | ||
| Via heat pump (Mode B) |
kW
|
12.1
|
| Via standard LPHW @ 80°C |
kW
|
42
|
| Via upgraded LPHW @ 55°C |
kW
|
36
|
| Total Mode B + standard LPHW |
kW
|
54.1
|
| Heat to pool water | ||
| Via heat pump (Mode A) |
kW
|
15.0
|
| Via LPHW @ 80°C |
kW
|
40
|
| Via LPHW @ 55°C |
kW
|
20
|
| Total Mode A + LPHW |
kW
|
55.0
|
| Cooling duty | ||
| Total |
kW
|
-10.1
|
| Sensible |
kW
|
-7.1
|
| Nominal power consumed |
kW
|
7.4
|
| R407c gas weight/CO2 equivalent |
kg/t
|
8.0/14.19
|
| Width |
mm
|
1,840
|
| Depth |
mm
|
854
|
| Height |
mm
|
1,970
|
| Weight |
kg
|
460
|
Nominal recirculation air flow
7,000
m³/h
Exhaust/fresh air flow (stepped control)
350-3,500
m³/h
Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air
29.2
l/h
Heat to air
Via heat pump (Mode B)
12.1
kW
Via standard LPHW @ 80°C
42
kW
Via upgraded LPHW @ 55°C
36
kW
Total Mode B + standard LPHW
54.1
kW
Heat to pool water
Via heat pump (Mode A)
15.0
kW
Via LPHW @ 80°C
40
kW
Via LPHW @ 55°C
20
kW
Total Mode A + LPHW
55.0
kW
Cooling duty
Total
-10.1
kW
Sensible
-7.1
kW
Nominal power consumed
7.4
kW
R407c gas weight/CO2 equivalent
8.0/14.19
kg/t
Width
1,840
mm
Depth
854
mm
Height
1,970
mm
Weight
460
kg
| Specifications | Units | DT 14 |
|---|---|---|
| Nominal recirculation air flow |
m³/h
|
10,000
|
| Exhaust/fresh air flow (stepped control) |
m³/h
|
670-6,700
|
| Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air |
l/h
|
56.5
|
| Heat to air | ||
| Via heat pump (Mode B) |
kW
|
30.0
|
| Via standard LPHW @ 80°C |
kW
|
85
|
| Via upgraded LPHW @ 55°C |
kW
|
72
|
| Total Mode B + standard LPHW |
kW
|
115.0
|
| Heat to pool water | ||
| Via heat pump (Mode A) |
kW
|
35.0
|
| Via LPHW @ 80°C |
kW
|
65
|
| Via LPHW @ 55°C |
kW
|
32
|
| Total Mode A + LPHW |
kW
|
100.0
|
| Cooling duty | ||
| Total |
kW
|
-23.0
|
| Sensible |
kW
|
-13.0
|
| Nominal power consumed |
kW
|
12.3
|
| R407c gas weight/CO2 equivalent |
kg/t
|
21.5/38.14
|
| Width |
mm
|
2,860
|
| Depth |
mm
|
1,126
|
| Height |
mm
|
2,120
|
| Weight |
kg
|
954
|
Nominal recirculation air flow
10,000
m³/h
Exhaust/fresh air flow (stepped control)
670-6,700
m³/h
Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air
56.5
l/h
Heat to air
Via heat pump (Mode B)
30.0
kW
Via standard LPHW @ 80°C
85
kW
Via upgraded LPHW @ 55°C
72
kW
Total Mode B + standard LPHW
115.0
kW
Heat to pool water
Via heat pump (Mode A)
35.0
kW
Via LPHW @ 80°C
65
kW
Via LPHW @ 55°C
32
kW
Total Mode A + LPHW
100.0
kW
Cooling duty
Total
-23.0
kW
Sensible
-13.0
kW
Nominal power consumed
12.3
kW
R407c gas weight/CO2 equivalent
21.5/38.14
kg/t
Width
2,860
mm
Depth
1,126
mm
Height
2,120
mm
Weight
954
kg
| Specifications | Units | DT 16 |
|---|---|---|
| Nominal recirculation air flow |
m³/h
|
12,000
|
| Exhaust/fresh air flow (stepped control) |
m³/h
|
850-8,000
|
| Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air |
l/h
|
62.4
|
| Heat to air | ||
| Via heat pump (Mode B) |
kW
|
35.0
|
| Via standard LPHW @ 80°C |
kW
|
90
|
| Via upgraded LPHW @ 55°C |
kW
|
77
|
| Total Mode B + standard LPHW |
kW
|
125.0
|
| Heat to pool water | ||
| Via heat pump (Mode A) |
kW
|
43.0
|
| Via LPHW @ 80°C |
kW
|
65
|
| Via LPHW @ 55°C |
kW
|
32
|
| Total Mode A + LPHW |
kW
|
108.0
|
| Cooling duty | ||
| Total |
kW
|
-28.0
|
| Sensible |
kW
|
-15.0
|
| Nominal power consumed |
kW
|
17.0
|
| R407c gas weight/CO2 equivalent |
kg/t
|
21.5/38.14
|
| Width |
mm
|
2,860
|
| Depth |
mm
|
1,126
|
| Height |
mm
|
2,120
|
| Weight |
kg
|
1,020
|
Nominal recirculation air flow
12,000
m³/h
Exhaust/fresh air flow (stepped control)
850-8,000
m³/h
Total dehumidification @ 28°C/60% RH by heat pump and maximum fresh air
62.4
l/h
Heat to air
Via heat pump (Mode B)
35.0
kW
Via standard LPHW @ 80°C
90
kW
Via upgraded LPHW @ 55°C
77
kW
Total Mode B + standard LPHW
125.0
kW
Heat to pool water
Via heat pump (Mode A)
43.0
kW
Via LPHW @ 80°C
65
kW
Via LPHW @ 55°C
32
kW
Total Mode A + LPHW
108.0
kW
Cooling duty
Total
-28.0
kW
Sensible
-15.0
kW
Nominal power consumed
17.0
kW
R407c gas weight/CO2 equivalent
21.5/38.14
kg/t
Width
2,860
mm
Depth
1,126
mm
Height
2,120
mm
Weight
1,020
kg
Suitable for
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