Specification Sheet

Keltech
®
SNA-Series - Safety Shower Heaters
Tankless Water Heating Solutions
© 2017 Bradley
P.O. Box 309, Menomonee Falls, WI 53052-0309
800 BRADLEY (800 272 3539) [phone]
bradleycorp.com
Page 2 of 5 12/6/2017
This information is subject to change without notice.
Bradley_Keltech_SNASeries
Product Options
Fused Disconnect
Internal fused disconnect interlocks with enclosure door when energized, prohibiting access to a live
cabinet. Select the FDS option for an additional level of safety and convenience at the heater location.
Alarm Selections
Keltech offers two levels of building communication alarm options. The AL3 option provides
dry contacts that open to signal flow >1.5 gpm has activated the heater. The AL3-SL option
provides these dry contacts and additionally activates a local audible and visual alarm on the
heater. Alarms activate at 1.5 gpm flow or greater.
Freeze Protection
The standard ambient temperature is 33°F (0.6°C). For environments lower than 33°F,
Keltech offers two levels of freeze protection. ENHT offers protection to -20°F (-28°C).
The ENHT30 offers protection to -30°F (-34°C). Each level of protection utilizes the
normal heater supply voltage. No additional dedicated circuit to the unit is required during
field installation. Freeze protection (ENHT option) includes an internally insulated NEMA
4/4X enclosure and thermostatically controlled forced air heater to maintain internal
temperatures above freezing.
ENHT options also include a connection point for DCS monitoring. In the event of a power interruption
or ENHT system failure when internal enclosure temperatures reach 40°F (4.4°C) or lower, the unit
will notify a facilities control/monitoring system that the unit is unable to maintain freeze protection.
Regardless of state of power to the unit, this warning notifies maintenance personnel and provides
an opportunity to correct the condition before any damage occurs to the unit.
Remote Emergency Stop
RES is an internal communication option that is wired into a Building Management
System. Allows power to be removed remotely from the heat exchanger.
Ground Fault
Optional equipment protection ground fault senses leakage current to ground >1 Amp.
In the event a fault is detected, this device will terminate the high voltage power supply
to heating elements and disable operation of the unit. Fault status is communicated
EXTERNALLY at the control interface. Personnel may also test the Ground Fault system
and reset any nuisance trips without opening the cabinet.
Continuous Flow Explosion Proof Purge System
Keltech's EXP2CFPM option makes heaters compliant for classified areas; Class 1, Division
2, Groups A-D, T5. The Purge System requires a supply of clean instrument air or inert gas
(provided by installer). This supply maintains a positive internal pressure and prevents the
enclosure from filling with flammable gasses, dusts or vapors from the ambient environment.
In addition to manufacturer certifications on the purge system, Keltech independently tests
and 3rd party certifies all finished product with EXP2CFPM to comply with NFPA 496.
ASME Heat Exchanger
Keltech offers any product above 200,000 btu equivalent (58kw+) the option to be fitted with
internal plumbing certified to Section IV of the ASME Boiler and Pressure Vessel Code - an
industry exclusive certification. HLW certification represents not only an approved design
and method of construction, but an intensively audited construction and documentation
process that concludes with a pressure test witnessed by an ASME official. Upon completion
of this process, each heat exchanger is issued a unique serial number for registration in the
National Board. This information is supplied with the unit via Form "HLW-6 Manufacturer
Data Report" for verification and reference by local inspection officials. The HLW options
also include additional features such as dry-fire protection, an auto bleed valve, stainless
steel bulkheads and boiler drain valves, adding an extra level of quality and durability to
Keltech heaters.
Other Product Options
For additional heater options and installation accessories, reference the appropriate
section at the end of this document.
Capacity
(kW)
Voltage
Maximum
Amperage
Minimum
AWG Wire
Size
36 480 43 6
36 600 35 8
54 480 65 4
54 600 52 6
63 480 76 4
63 600 61 4
72 480 87 3
72 600 69 4
108 480 132 1
108 600 104 2
126 480 152 1/0
126 600 121 1
144 480 174 2/0
144 600 139 1/0
Electrical Specifications for
the Heater (3-Phase)
 All internal fuses necessary for installation
are included with the unit.
GPM
1.5 2 3 4 5 6 8 10 15 20 25 30 35 40 45 50
36–63
kW PSI
0.0 0.0 0.1 0.2 0.2 0.3 0.6 0.9 2.0 3.6 5.5 7.9 10.8 14.0 17.6 21.7
72–144
kW PSI
0.0 0.0 0.1 0.2 0.3 0.4 0.8 1.2 2.6 4.7 7.3 10.4 14.2 18.5 23.3 28.7
L-MIN
5.7 7.6 11.3 15.1 18.9 22.7 30.2 37.8 56.7 75.6 94.5 113.4 132.5 151.2 170.1 189
36–63
kW BAR
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.2 0.4 0.5 0.7 1.0 1.2 1.5
72–144
kW BAR
0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.2 0.3 0.5 0.7 1.0 1.3 1.6 2.0
SNA-Series Pressure Drop Advantage
Related Products
Halo S19314
Combination Drench
Shower and Eyewash
Complies with ANSI/ISEA Z358.1