Brochure

Inline Flow Regulator
(pressure compensating)
WWW.EEMAX.COM
EX09001-61 REV 12/2016
EEMAX INC. 400 Captain Neville Drive, Waterbury, CT 06705 Tel. [phone] Fax [phone]
5 15 kW 22 kW 29 kW 37 kW 44 kW 51 kW 59 kW 66 kW
4 12 kW 18 kW 23 kW 29 kW 35 kW 41 kW 47 kW 53 kW
3 9 kW 13 kW 18 kW 22 kW 26 kW 31 kW 35 kW 40 kW
2 6 kW 9 kW 12 kW 15 kW 18 kW 20 kW 23 kW 26 kW
1.5 4 kW 7 kW 9 kW 11 kW 13 kW 15 kW 18 kW 20 kW
1 3 kW 4 kW 6 kW 7 kW 9 kW 10 kW 12 kW 13 kW
20°F 30°F 40°F 50°F 60°F 70°F 80°F 90°F
TOTAL GALLONS PER
MINUTE (GPM) DEMAND
RISE IN TEMPERATURE
STEP 1: Calculate the maximum design ow rate that your heater can handle
• Determine the power rating (kW) of your heater.
• Use either the groundwater temperature map or
measure your incoming water temperature.
• Determine the desired output temperature (For
handwashing or showers use 105°F)
• Calculate the required Rise in Temperature °F.
• Choose the part with the insert size closest to
your maximum ow rate.
PR
HI
AK
CAN
37°F
42°F
47°F
52°F
57°F
62°F
67°F
72°F
77°F
Average Inlet
Temperature
These are general temperature
zones, actual inlet temperature
may be affected by local
variations and seasonal changes.
STEP 2: Install the Flow Regulator on the outlet side of the heater
• There are two models to choose from based on ½” or ¾” NPT threads and ow rating.
• The device can be threaded directly on the outlet of the heater or anywhere in the piping between the heater and outlet.
Example. Nashville, TN ofce break room with a kitchen sink and a dishwasher. 57°F incoming water requires 60°F rise
to achieve hot water for dishwasher. Based on the chart at 60°F rise, an 18 kW heater will produce up to 2 GPM ow.
The heater has ¾” outlet threads, so using the IFR 3-4 with the 2.0 GPM insert is the best choice.
The most common challenge faced with a tankless water
heater is when the water ow exceeds the power capacity
of the heater resulting in reduced water temperature.
To solve this issue, Eemax created a simple tting that
threads on the outlet side of the heater. The tting
contains an insert which limits the ow rate at a chosen
level while causing almost no pressure loss below that
level. With the Inline Flow Regulator installed, the Eemax
heater will provide the desired output temperature
regardless of the number of hot water outlets opened.
Inserts Included
2.0 GPM 3.0 GPM
4.0 GPM 5.0 GPM
IFR 3-4
Inserts Included
2.0 GPM
1.0 GPM 1.5 GPM
IFR 1-2
3/4” NPT 1/2” NPT
The simple solution to ensure hot water output.