7
Installation
SNA-Series Tankless Heater
Keltech •
215-1815 Rev. B; ECN 130011
10/17/2014
Start Up Check List
4
Plumbing
System is set in a vertical, level, and upright position with the outlet located at the top . System is mounted by
legs (2) bolted to the floor (3/8" dia . minimum) .
Confirm Installation of shutoff valve above (upstream of) the union on the inlet connection . Confirm Installation of
a Y-strainer (100 mesh screen) or inline filter (150 micron) between the inlet shutoff valve and the heater .
Pressure and temperature relief valve is installed on tepid water outlet immediately following the union . No valve
or restriction is between the relief valve and the system or the relief valve and drain . Shutoff valve is installed
after pressure and temperature relief valve on outlet if required by local or national plumbing codes .
If the hot water process is not at the highest point in the plumbing loop, then an automatic air vent valve must be
added at the highest point in the system plumbing loop to eliminate trapped air .
Electrical
Verify supply voltage matches the indicated voltage on the Serial Tag . Serial Tag is located within the heater
enclosure on the upper right corner of the back plate (mounting plate) . Voltage can also be verified on the SCCR
Tag on the door of the heater .
Appropriate conduit is installed properly, secured and sealed to unit enclosure per NEC and hazard
location requirements .
Appropriate conductors for unit routed through conduit and secured to power block inside the enclosure
(See Table 1) . All electrical is installed in accordance with national and local electrical codes, including fuse
size and rating .
Appropriate earth ground is installed to the lug provided on enclosure backplate .
