Install Instructions

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Maintain all clearances around
the water heater.
CLEARANCES
Model Top Bottom Front Back Sides
110U Indoor (T-KJr2U-IN)*
310U Indoor (T-K4U-IN)*
510U Indoor (T-D2U-IN)*
12 in.
(305 mm)
12 in.
(305 mm)
4 in.**
(102 mm)
0.5 in.
(13 mm)
3 in.
(76 mm)
110U Outdoor (T-KJr2U-OS)
310U Outdoor (T-K4U-OS)
510U Outdoor (T-D2U-OS)
36 in.
(914 mm)
12 in.
(305 mm)
24 in.
(610 mm)
0.5 in.
(13 mm)
3 in.
(76 mm)
*Standard indoor installations and direct-vent indoor installations have the same clearances.
**24 inches recommended for maintenance.
OPTIONAL ITEMS
#
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)
1.
4" Backflow preventer
and F-F adaptor
✓ ✓ ✓
2.
Direct-vent
conversion kit
✓ ✓ ✓
3.
Pipe cover
✓ ✓ ✓ ✓ ✓ ✓
4.
Recess box
✓ ✓ ✓
5.
Sidewall vent
terminator (Hood)
and Wall thimble
✓ ✓ ✓
6.
Direct-vent concentric
termination
✓ ✓ ✓
7.
Remote controller
for high temperature
mode
✓ ✓
INCLUDED ACCESSORIES
Installaon
Installaon Manual
Check that these items below are included with the water heater.
Installation manual
and Owner’s guide
Temperature
remote controller kit*
Communication cable
510U (T-D2U) model only
Qty: 1 Qty: 1
Qty: 1
*Refer to p. 10 and 22.
9009069005
(TM-RE42)