Elecro Engineering G2 Installation instructions
G2 Heat Exchanger
Installation & Operating Manual
CONTENTS
1. PRODUCT OVERVIEW ........................................................................................................3
1.1 Specification.......................................................................................................................3
1.2 Dimensions.........................................................................................................................4
2. GENERAL INSTALLATION INSTRUCTION ........................................................................4
2.1 Mounting instruction ...........................................................................................................4
2.2 Flow direction .....................................................................................................................5
3. WATER QUALITY.................................................................................................................7
4. WARRANTY .........................................................................................................................7
3
INTRODUCTION
Thank you for purchasing the Elecro G2 Heat Exchanger, manufactured in the UK to exacting standards,
using the highest quality materials, to ensure exceptional performance and reliability.
To ensure years of trouble-free service, please read and follow these instructions for proper installation,
maintenance and use.
WARNING: Failure to install the unit correctly may result in the warranty being void.
Please retain this manual for future reference.
1. PRODUCT OVERVIEW
Fig.1
1.1 Specification
Standard
Output
Primary
Flow
[m³/h]
Primary
Head Loss
(kpa)
Secondary
Flow [m³/h]
Secondary
Head Loss
(kpa)
∆T 15°C
[kW]
∆T 20°C
[kW]
∆T 30°C
[kW]
∆T 40°C
[kW]
∆T 50°C
[kW]
∆T 60°C
[kW]
∆T 70°C
[kW]
30‐kW
1.1
6.1
10
5.0
9
11
16
20
26
30
33
30‐kW
1.3
6.8
10
5.0
10
13
18
23
31
34
39
30‐kW
1.3
6.8
14
7.0
11
15
20
26
34
41
46
49‐kW
1.6
7.7
16
9.2
13
18
25
43
41
50
56
49‐kW
1.8
8.3
16
9.2
15
20
28
38
45
55
62
49‐kW
2.2
9.6
17
9.8
16
22
33
44
52
64
73
85‐kW
2.4
11.3
17
10.6
22
28
40
53
64
75
81
85‐kW
2.7
12.9
17
10.6
26
32
46
60
73
82
89
85‐kW
3.2
14.7
17
10.6
28
34
49
64
77
90
102
122‐kW
3.8
18.3
19
12.6
33
43
68
75
93
108
120
122‐kW
4.2
20.0
19
12.6
36
48
70
89
108
126
143
122‐kW
4.6
21.1
19
12.6
38
73
73
95
116
137
156
•∆T = Temperature difference between Primary and Secondary
•To calculate BTU, multiply kW x 3412 kW x 3412 = BTU Output
Note: Maximum primary operating temperature is 95°C
4
1.2 Dimensions
Fig. 2
L1(mm)
L2(mm)
L3(mm)
30 –kW
540
426
247
49 –kW
710
596
417
85 –kW
840
726
547
122 - kW
1000
886
707
2. GENERAL INSTALLATION INSTRUCTION
2.1 Mounting instruction
The Heat Exchanger can be either installed horizontally or vertically allowing enough space for the pipe
connections.
Caution: If the Heat Exchanger is unused duringthe winter months, it must be drained to prevent
frost damage. Water must not be allowed to freeze in the Heat Exchanger, as this will
cause severe damage.
The Heat Exchanger should be installed at a low point in the filtration system. It should be positioned
downstream of (after) the filter and upstream of (before) any dosing or other water treatment plan. (see
Fig. 3).
Fig. 3
5
Fig. 4
2.2 Flow direction
Your G2 Heat Exchanger should be connected to the two independent water circuits as follows:
1. Connection to Water Filtration Circuit (Secondary)
The Heat Exchanger should be plumbed in-line, after the filtration pump and filter and before any water
treatment equipment. It must be fed with clean water. Weed/debris should not be allowed to enter the Heat
Exchanger. Universal 1.5” / 50mm ABS unions for connection to rigid PVC or ABS pipe are included
(stepped internal diameter to accommodate both sizes). The Heat Exchanger should be installed as close
as possible to the boiler/heat source to minimise heat loss.
To assist with correct air purging and to ensure that the Heat Exchanger remains full of water during
operation, it should be installed at the lowest point in the filtration circuit.
If the Heat Exchanger is installed in a vertical plain, it is essential that the pool/pond water
(secondary circuit) enters low and exits high.
2. Connection to Heating or Cooling Circuit (Primary)
The Heat Exchanger should be connected directly to the primary circuit i.e. boiler/chiller via the provided
1” BSP male brass connectors.
NOTE: The circulation pump of the primary circuit should be controlled by a thermostat, which should
be connected via the filtration pump to allow heating only when the filtration pump is running.
Air bleed valves should be installed at the high points of the primary circuit. To ensure correct temperature
detection, it is essential that the thermostat / thermistor is positioned at the pool / pond water inlet of the
Heat Exchanger. The thermostat pocket and blanking cap use a common port and can thus be swapped
as required.
6
Care should be taken not to over tighten any
connections, as this could result in damage to the
Heat Exchanger.
Only use the supplied brass connectors as
other uncertified connectors may leak or
cause damage to the unit.
The primary and secondary circuits should be installed so water flows are counter current i.e. the water
from the primary circuit should flow in the opposite direction to the water in the secondary circuit.
CAUTION: If the Heat Exchanger is not used during the winter months, it must be drained to prevent frost
damage.
NOTE: For Winterising / maintenance, it is recommended that the Heat Exchanger is installed with
isolation valves on both water input and output sides of the primary and secondary circuits. This
will allow the water to be shut off on both sides and aid removal from the system, when required.
7
3. WATER QUALITY
To prevent damage to your Heat Exchanger, the water quality MUST be within the following limits:
•PH: 6.8 –8.0
•Total Alkalinity (TA): 80 –140 ppm (parts per million)
•Chloride Content MAX: 150 mg/litre
•Free Chlorine: 2.0 mg/litre
•Total Bromine: Max 4.5 mg/litre
•Total Dissolved Solids (TDS)/Calcium hardness: 200 –1,000 ppm
4. WARRANTY
This product is guaranteed from the date of purchase against faulty workmanship and materials
for:
–two years within Europe
–one year outside of Europe
•The manufacturer will replace or repair, at its discretion, any faulty units or components returned
to the Company for inspection.
•Proof of purchase may be required.
•The manufacturer will not be liable in cases of incorrect installation of the heater, inappropriate use
or neglect of the heater.
•Any damages occurred due to shipping must be reported within 48 hours of receipt of the product.
Any claims after this time will be considered as misuse or abuse of the product and will not be
covered by the warranty.
•Any glass parts, seals and water connections are considered as consumables and are not covered
by the warranty.
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