EcoSmart POU 4T Installation Instructions & Owner's Manual page 8

6- SIZING GUIDE
The chart below indicates maximum temperature rise for a given flow rate.
GPM
3
6.5 148.0
LPM
3
5.5
To ensure the optimal temperature output and overall performance of your tankless water heater an aerator
supplied with heater should be installed.
These models are specifically designed for single room applications and can be easily installed beneath a cabinet
or under a sink. The thermostatic POU water heaters support applications employing sensor, non-sensor or
metering faucets. A single unit can support an individual application such as a lavatory/bathroom, kitchen sink,
wet bar, or a utility sink, etc.
DANGER INCREASING THE FLOW RATE REDUCES THE OUTLET TEMPERATURE. PLEASE BE SURE TO
PROPERLY SIZE YOUR AERATOR TO PREVENT SCALDING
7- GENERAL OPERATING INSTRUCTIONS
Operating your new tankless water heater is similar to using any traditional water heating system. However, it is
very important that you carefully read all of the setup procedures and operating instructions and tips to ensure
the maximum performance and energy savings from your new water heater. We recommend that all members
of the household read these General Operating Instructions.
How your new water heater works:
This tankless water heater differs from a conventional storage water heater as it does not store hot water, but
heats water as it flows through the heater.
The temperature of the hot water delivered by the heater depends on the wattage of the heating element,
temperature of the incoming cold water and the water flow rate through the water heater.
It is important to keep in mind that all tankless water heaters are subject to a maximum flow rate. The heater will
not be capable of heating water to desired temperature if the flow rate exceeds heaters capability. In order for
the heater to operate properly, it must be carefully matched to its application and aerators should be used to limit
water flow. See the Table I to determine the maximum flow rates and temperature rise for each model.
0.3 0.5 0.75
68.3 41.0 27.3
88.8 59.2
1.1 1.9 2.8
37.9 22.8 15.2
82.2 49.3 32.9
AERATOR SUPPLIED IS .5GPM/ 1.9LPM
GPM to Temp Rise in °F
1 1.25 1.5
20.5 16.4 13.7
44.4 35.5 29.6
LPM to Temp Rise in °C
3.8 4.7 5.7
11.4 9.1 7.6
24.7 19.7 16.4
1.75 2 2.5
11.7 10.2 8.2
25.4 22.2 17.8
6.6 7.6 9.5
6.5 5.7 4.6
14.1 12.3 9.9
3
6.8
14.8
11.4
3.8
8.2
7