Takagi AT-K5U-OS User Manual

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Maintain all clearances around
the water heater.
CLEARANCES
OPTIONAL ITEMS
#
Model
110U
Indoor
(AT-KJr3U-IN)
110U
Outdoor
(AT-KJr3U-OS)
310U
Indoor
(AT-K5U-IN)
310U
Outdoor
(AT-K5U-OS)
510U
Indoor
(AT-D3U-IN)
510U
Outdoor
(AT-D3U-OS)
1.
4” Backflow preventer and F-F adaptor
✓ ✓ ✓
4" Universal Appliance Adaptor, F-F adaptor,
backflow preventer, condensate drain trap
✓ ✓ ✓
2.
Pipe cover
✓ ✓ ✓ ✓ ✓ ✓
3.
Recess box (Retrofit)
✓ ✓ ✓
Recess box (New construction)
✓ ✓ ✓
4.
Sidewall vent terminator (Hood) and
Wall thimble
✓ ✓ ✓
Sidewall vent terminator (Round) and
Wall thimble
✓ ✓ ✓
5.
Direct-vent concentric
termination
✓ ✓ ✓
6. Remote controller
✓
Included
✓
Included
✓
Included
Installaon
Installaon Manual
INCLUDED ACCESSORIES
Installation
manual
and Owner’s
guide
Temperature remote
controller kit
(Outdoor model only)
Communication cable
510U
(AT-D3U-IN/OS)only
LP Conversion Kit (100270585)
Qty: 1
9009069005
(TM-RE42)
Qty: 1
Qty: 1

Manifold gasket (319143-581): 1


Spare Screw : 2
(319143-581)
(320273-585)
Model Top Bottom Front Back Sides


510U Indoor (AT-D3U-IN)*
12 in.
(305 mm)
12 in.
(305 mm)
4 in.**
(102 mm)
1.0 in.
(25 mm)
3 in.
(76 mm)


510U Outdoor (AT-D3U-OS)***
36 in.
(914 mm)
12 in.
(305 mm)
24 in.
(610 mm)
1.0 in.
(25 mm)
3 in.
(76 mm)
*Standard indoor installations and direct-vent indoor installations have the same clearances.
**24 inches recommended for maintenance.
***For the multiple installation of outdoor models, refer to the above clearances.

Takagi AT-K5U-OS Specifications

General

Brand	Takagi
Model	AT-K5U-OS
Category	Water Heater
Language	English