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CLEARANCES
OPTIONAL ITEMS
#
Model
110U
Indoor
110U
Outdoor
310U
Indoor
310U
Outdoor
510U
Indoor
510U
Outdoor
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
Installation
Installation Manual
INCLUDED ACCESSORIES
Installation
manual
and Owner’s
guide
Temperature remote
controller kit
(Outdoor model only)
Communication cable
510U
only
LP Conversion Kit (100270585)
Qty: 1
100209924
(TM-RE42)
Qty: 1
Qty: 1
Manifold attachments : 2 Small / 1 Large
Manifold gasket (100281157): 1
Gas conversion sticker : 1
Gas conversion instruction : 1
Spare Screw : 2
(100281157)
(100076516)
Model
Top
Bottom
Front
Back
Sides
110U Indoor*
310U Indoor*
510U Indoor*
12 in.
(305 mm)
12 in.
(305 mm)
4 in.**
(102 mm)
1.0 in.
(25 mm)
3 in.
(76 mm)
110U Outdoor***
310U Outdoor***
510U Outdoor***
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.
Maintain all clearances around the water
heater. Failure to do so could create a fire
hazard, potentially leading to death, serious
injury, and/or property damage.
WARNING