Product Guide

510U SERIES
Specifications
The 510U series is well suited for residential/commercial applications such as small restaurants
and beauty salons. Indoor models include an integrated temperature controller. A remote control
is included as a standard feature for outdoor models. Utilizing commercial-grade copper alloy
for the heat exchanger tubing, the D3U series is also suitable for heavier-residential usages such
as combination space heating and domestic recirculation systems.
Model Number* Type
Gas Consumption Input Inlet Gas Pressure**
UEF
Minimum
(BTU/H)
Maximum
(BTU/H)
Minimum
(in. W.C.)
Maximum
(in. W.C.)
TK-510U-I Natural 15,000 199,000 4.0 10.5 0.82
TK-510U-E Natural 15,000 199,000 4.0 10.5 0.81
Model Number*
Maximum
GPM
Hot/Cold
Connections
Gas
Connection
Clearances (in.)
Approx
Shipping
Weight (lbs)
Top Bottom Side Front
TK-510U-I 10 3/4" NPT 3/4” NPT 12 12 3 4 40
TK-510U-E 10 3/4" NPT 3/4” NPT 36 12 3 24 40
*Units are field convertible from natural gas to propane with supplied conversion kit.
**For propane, minimum inlet gas pressure is 8.0 in. W.C. and maximum inlet gas pressure is 14.0 in. W.C.
ANSI Z21.10.3 • CSA 4.3
NON-CONDENSING
510U
Temperature
Settings
Dipswitches 120°F (default) 140°F
With100209924 remote (max. distance 400’ from heater, non-polarized 120 gauge wiring.)
100°F to 160°F (13 options), 120°F Default Factory Setting
Electric 120 V
82 W / 1.02 A
(Operation)
3 W / 0.07 A
(Standby)
97 W / 0.82 A
(Freeze-Protection)
TK-510U-ETK-510U-I
27