Installation Guide and Manual

3
OPERATION PRINCIPLE
How the Eemax Tankless Water Heater Works
Operating the new Eemax tankless water heater is similar to using any traditional water heater system. However, it is
very important that all of the set-up procedures and operating instructions are carefully read to ensure maximum
performance and energy savings from the water heater.
The Eemax tankless water heater does not store hot water like a conventional tank-type water heater. It contains high
powered bare wire technology heating elements that are capable of heating water instantly on-demand. Whenever
there is a hot water demand, the patented flow meter within the heater recognizes the demand and initiates the
heating process. This meter measures the water flow rate while two thermistor sensors measure the incoming and
outgoing water temperature. This information is transmitted continually to the microprocessor controller which
determines the precise amount of power to send to the heating elements to heat the water to the desired temperature.
The Eemax tankless water heater only uses as much power as is needed to meet the demand by fully modulating the
heating elements from 0 to 100%.
It is important to keep in mind that all tankless water heaters are subject to a maximum flow rate. If this flow rate is
exceeded, the heater will not be capable of fully heating water. The amount of water that can be heated by the tankless
water heater at any given time will depend on the model selected and the incoming water temperature. See diagram
on below to determine the maximum flow rates. Since a tankless water heater eliminates the ongoing thermal losses
caused by storing hot water in a tank, there will be a significant energy savings compared to a conventional tank type
water heater.
Temperature Rise at Specified Flow Rate (°F)
MODEL
TURN-ON
GPM
3.0
GPM
4.0
GPM
6.0
GPM
8.0
GPM
12.0
GPM
20.0
GPM
25.0
GPM
30.0
GPM
AP032208
1.0
73
55
36
27
18
10
8
7
AP036208
1.0
82
61
41
29
20
12
9
8
AP041208
1.0
93
70
47
35
23
13
11
9
AP054208
1.5
123
92
61
46
31
18
14
12
AP064208
2.5
146
109
73
55
36
22
17
15
AP036480
1.0
82
61
41
31
20
12
9
8
AP039480
1.0
89
67
44
33
22
13
11
7
AP048480
1.0
109
82
55
41
27
16
13
11
AP054480
1.5
123
92
61
46
31
18
14
12
AP063480
2.5
143
108
72
53
36
22
17
14
AP072480
2.5
147
123
82
61
41
25
20
16
AP096480
2.5
-
-
109
82
54
33
26
22
AP108480
2.5
-
-
99
92
61
37
30
25
AP126480
2.5
-
-
143
107
72
43
34
29
AP144480
2.5
-
-
-
122
82
49
40
34
AP130600
2.5
-
-
-
111
73
44
35
30
AP150600
2.5
-
-
-
128
85
52
40
35