10
HL-Series Tankless Heater
Installation
3/29/2018
Bradley •
215-1823 Rev. F; ECN 18-17-017
Start Up
5
A
Slowly turn on water supply to the unit
with the enclosure cover open and the
circuit breaker in the off position .
C
Turn off the connected process and
check the entire system to verify leak-free
installation .
D
Secure the enclosure cover (standard
NEMA 1) or door (NEMA 4/4X) .
E
Energize the electrical service to the unit
by switching on the two or three pole
switch or circuit breaker . 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 .
NOTICE! 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.
WARNING Make sure the circuit breaker for the heater is OFF.
G
When startup is complete, leave the two
or three pole switch or circuit breaker
in the ON position . The digital display
should read ambient temperature and
OFF .
F
Turn on the connected process; observe
output temperature rise to setpoint .
On NEMA 1 controller, set point and
output temperatures are located side
by side. On the NEMA 4/4X controller,
the top portion of temperature controller
displays output temperature, bottom
displays setpoint temperature.
NEMA 4 is standard on model HL-25.
If unit is ordered with the D1 option, the
controller is shipped with this option
deactivated.
Contact the factory to get the
unlock code to activate the option.
