8
SNA-Series Tankless Heater
Installation
10/17/2014
Keltech •
215-1815 Rev. B; ECN 130011
Start Up
5
A
Slowly turn on water supply to the unit
with the enclosure door open .
C
Turn off the connected process and
check the entire system to verify leak-free
installation .
G
Turn on the connected process; observe
output temperature rise to setpoint .
NOTE:
Top portion of temperature controller
displays output temperature, bottom
displays setpoint temperature (setpoint
temp is not adjustable on SNA Models).
D
Close enclosure door and secure .
Depress the Emergency Stop Button .
E
Energize the electrical service to the unit
by switching on the breaker .
F
Pull out Emergency Stop Button .
After a six second discharge from the
TepidGuard overshoot purge system, the
unit is now in the ready-state .
B
Slowly turn on the water outlet valve,
activate the connected process requiring
heated water (faucet, shower, etc .), then
flush the system for 5 minutes to ensure all
air is purged from the system .
CAUTION!
Failure to bleed air properly will damage
elements and cause heater malfunction.
Be sure that plumbing and electrical are complete per Start Up Check List.
IMPORTANT! If your heater is mounted in an area where freezing temperatures are possible, an ENHT
Freeze Protection Option should be specified. Heaters must be powered at all times to be
Freeze Protected. If continuous power is not possible, do not allow the heater to remain
full of water. Freezing of the heater can cause serious damage.
IMPORTANT! If your heater has the EXP2 option and is located in a Class I Division II area, please review
Special Installation & Operation Instructions section for all proper electrical connections
and sealing to ensure the installation will provide the proper protection.
WARNING! Make sure the breaker for the heater is OFF.
H
When startup is complete, leave circuit
breaker in the ON position and the
Emergency Stop Button on the door
pulled out . The Green power light should
be illuminated .
