Operational Tests - Keltech CNA-36 Installation Manual

Installation
7
Perform Operational Test No. 1
Start the water flow through the heater by
A
starting the process or fixture this heater is
connected to in order to activate heater .
When flow rate reaches approximately
1 .5gpm, the flow sensor recognizes this
condition and begins the heating process .
When the flow sensor activates:
• Green bank energized lights illuminate on the
B 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 .
• Digital temperature controller shows water
temperature . Additional programming is
not necessary .
8
Perform Operational Test No. 2
Each model has precise specifications for temperature rise capabilities.
Turn on hot water faucet/fixture/process
A
(min flow rate of 1 .5gpm) . The heater should
activate immediately .
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.
CNA-Series
Models 480/600V kW
CNA-36 36
CNA-54 54
CNA-63 63
CNA-72 72
CNA-108 108
CNA-126 126
CNA-144 144
Models 480/600V kW
CNA-36 36
CNA-54 54
CNA-63 63
CNA-72 72
CNA-108 108
CNA-126 126
CNA-144 144
Keltech • 215-1814 Rev. C; ECN 150010
Temperature Rise (GPM & F°)
2 gpm 4 gpm 6 gpm 8 gpm
ΔT °F ΔT °F ΔT °F
122 62 40
93 60
107 71
124 80
120
143
Temperature Rise (lpm & C°)
7 .6 lpm 15 .1 lpm 22 .7 lpm 30 .2 lpm
ΔT °C ΔT °C ΔT °C ΔT °C
68 34 22
52 33
59 39
69 44
67
79
Press the up or down arrow keys to
C
adjust the set temperature . The controller
displays the temperature of water
measured at the outlet .
Located on the panel are one (36-63kW)
or two (72kW-144kW) green ready lights.
When illuminated, the safety circuit is
engaged and ready for use.
Test water temperature and stability at
D
outlet by viewing the display . Controller
displays (in red) the temperature of water
exiting the heater .
Heater will not energize heating elements if the
inlet water temperature is equal to or greater than
the temperature set on the digital controller .
Turn off hot water faucet/fixture/process .
B
The flow sensor will deactivate and shut
off power to the heater .
10 gpm 12 gpm 15 gpm
ΔT °F ΔT °F ΔT °F ΔT °F
30 24 20
45 37 31
53 43 35
80 49 40
90 74 61
107 86 71
120 96 82
37 .8 lpm 45 .4 lpm 56 .7 lpm
ΔT °C ΔT °C ΔT °C
17 13 11
25 21 17
29 24 19
44 27 22
50 41 34
59 48 39
67 53 46
7/13/2015
CNA-Series Tankless Heater
20 gpm 25 gpm 30 gpm
ΔT °F ΔT °F ΔT °F
16 12
24 18 14
29 21 17 14
33 24 20 16
49 36 29 24
57 43 34 28
66 49 39 33
75 .6 lpm 94 .5 lpm 113 .4 lpm
ΔT °C ΔT °C ΔT °C
9 7
13 10 8
16 12 9
18 13 11
27 20 16 13
32 24 19 16
37 27 22 18
35 gpm
ΔT °F
14
21
25
28
132 .5 lpm
ΔT °C
8
9 8
12
14
16
11