10
CLE Series Tankless Heater
Installation
10/2/2015
Keltech •
215-1822 Rev. A; ECN 140011
Perform Operational Test No. 1
Perform Operational Test No. 2
6
7
B
Start the water flow through the heater by
starting the process or fixture this heater is
connected to in order to activate heater .
A
Turn on hot water faucet/fixture/process (min
flow rate of 0 .75gpm) . The heater should
activate immediately .
D
The controller displays the temperature of
water measured at the outlet .
B
Turn off hot water faucet/fixture/process .
The flow switch will deactivate and shut
off power to the heater .
E
Test water temperature and stability at
outlet by viewing the display . Controller
displays (in red) the temperature of water
exiting the heater .
C
When flow rate reaches approximately
0 .75gpm, the flow switch activates and begins
the heating process .
When the flow switch activates:
• Phase indicator lights illuminate on the front
bezel verifying power supply connection to the
heating elements via the solid-state relays .
• Element load lights may be solid or flash
in unison as heating elements modulate
depending on the hot water demand .
• Lower display on controller goes from off to
setpoint temperature .
Located on the panel is a (18kW or 25kW)
green ready light. When illuminated, the
safety circuit is engaged and ready for use.
Heater will not energize heating elements if the
inlet water temperature is equal to or greater than
the temperature set on the digital controller .
If the water flow exceeds maximum heating capacity of the heater, the temperature of water at the outlet
may be lower than the temperature selected on the controller. See table below to determine maximum
temperature rise capabilities.
Each model has precise specifications for temperature rise capabilities.
Temperature Rise (GPM & F°)
Models 480/600V
kW
1 gpm
Δ
T °F
2 gpm
Δ
T °F
3 gpm
Δ
T °F
4 gpm
Δ
T °F
5 gpm
Δ
T °F
6 gpm
Δ
T °F
7 gpm
Δ
T °F
8 gpm
Δ
T °F
9 gpm
Δ
T °F
10 gpm
Δ
T °F
CLE18
18
122
61
41
31
25
20
17
15
13
12
CLE25
25
160
85
57
43
34
28
24
21
19
17
*May exceed the maximum temperature setting of the heater
Temperature Rise (lpm & C°)
Models 480/600V
kW
3 .8 lpm
Δ
T °C
7 .6 lpm
Δ
T °C
11 .4 lpm
Δ
T °C
15 .1 lpm
Δ
T °C
18 .9 lpm
Δ
T °C
22 .7 lpm
Δ
T °C
26 .5 lpm
Δ
T °C
30 .2 lpm
Δ
T °C
34 .1 lpm
Δ
T °C
37 .8 lpm
Δ
T °C
CLE18
18
68
34
32
17
14
11
9
8
7
7
CLE25
25
89
47
14
24
19
16
13
12
11
9
Ensure the enclosure door is closed
prior to performing operation test.
A
Set the 3-pole switch or circuit breaker to the
ON position .
