Install Instructions

4 Page
Model
110U
Indoor
(T-KJr2U-IN)
110U
Outdoor
(T-KJr2U-OS)
310U
Indoor
(T-K4U-IN)
310U
Outdoor
(T-K4U-OS)
510U
Indoor
(T-D2U-IN)
510U
Outdoor
(T-D2U-OS)
Natural Gas Input
(Operating Range)
BTU/h
Min.: 15,000
Max.: 140,000
Min.: 15,000
Max.: 190,000
Min.: 15,000
Max.: 199,000
Gas Connection 3/4" NPT
Water Connections 3/4" NPT
Water Pressure*
psi
(Mpa)
15 - 150 (0.1 - 1)
Natural gas
Inlet Pressure
" W.C.
(kPa)
Min. 5.0 (1.24)
Max. 10.5 (2.61)
Manifold
Pressure**
Natural
Gas
" W.C.
(Pa)
1.8
(448)
1.5
(373)
3.0
(747)
2.9
(722)
3.2
(796)
3.05
(759)
Weight lbs. (kg) 37 (16.9) 39 (17.9)
Dimensions
inch
H 20.5 x W 13.8 x D 8.5
H 520 x W 351 x D 216
mm
Ignition Electric Ignition
Electric
Supply VAC / Hz 120 / 60
Consumption
Operation W / A 52.1 / 0.54 75.8 / 0.83 81.6 / 0.86
Standby W / A 5.4 / 0.08 5.5 / 0.08 6.5 / 0.09
Freeze-
Protection
W / A 131 / 1.1 131 / 1.1 132 / 1.1
SPECIFICATIONS
*The maximum flow may need water pressure equal to or above 40 psi.
** The Manifold Pressure is the factory setting and generally should not need adjustment.
NOTE:
• Checktheratingplatetoensurethisproductmatchesyourspecifications.
• InaccordancewithANSIZ21.10.3,COemissiondoesnotexceed400PPMfornormalinput.
• The manufacturer reserves the right to discontinue, or change at any time, specifications or designs
without notice and without incurring obligations.
Specicaons
Installaon Manual