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PLEASE NOTE: SH22 IS FOR OUTDOOR PERMANENT INSTALLATIONS ONLY AND SH22I IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL
AND ALL ECCOTEMP CONTENT IS SUBJECT TO CHANGE WITHOUT NOTICE. PLEASE VISIT SUPPORT.ECCOTEMP.COM FOR MORE INFORMATION.
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Venting Through Closed Spaces
If the vent piping passes through a closed space, wrap the vent pipe with inflammable insulation material
that is at least 3/4” thick.
DO NOT
let the insulation material make contact with flammable materials. A
minimum clearance of 6” between the vent pipe and ceiling should be maintained. Follow local codes.
For maintenance and inspection purposes, the following holes are required to be made:
• Two (2) inspection openings that allow access to venting. One
(1) of these openings should be close to where the vent pipe
enters the ceiling. The other opening should be near the vent
termination.
• A ventilation hole with a 16 sq. in. opening should be made at
least every 10 feet.
NOTICE: Vent pipes must be completely insulated with
inflammable material when installed in alcoves, closets, and
garages and must not touch any flammable material.
Venting
The installation of venting must
comply with national codes, local
codes, and the vent manufacturer’s
instructions. Owner must refer to
vent manufacturer’s instructions
and specifications. Z-Flex
information can be found at www.
novaflex.com.
The water heater must be vented
to the outdoors as described in
these instructions.
DO NOT
connect
this water heater to an existing
Vent or Chimney, it must be vented
separately from all other appliances.
All vent components (adapters,
pipe, elbows, terminals, etc.) should
be UL 1738 Certified Stainless Steel
Venting Material (e.g. AL29-4C).
The specified vent termination must
be used. The termination should be
a 90° elbow type with screen.
(Refer to page 35).
Use a vent pipe with an
antidisconnection structure.
The use of a High Temperature
Silicone (500’ F) may be required
to seal vent connections. To
prevent accidental gas exhaust
leakage, apply a 1/4” wide bead
approximately 1/4” from the end
and another bead against the joint
side of the stop bead.
Follow vent manufacturer’s
installation instructions.
The unit can be vented either
horizontally or vertically.
Vent pipe runs must be adequately
supported along both horizontal
and vertical runs.
The maximum recommended
unsupported span should be no
more than five (5) feet. Support
isolation hanging bands should
be used.
DO NOT
use wire. (See
diagram below).
DANGER: Failure
to install the vent
adapter and properly
vent the water heater
to the outdoors as
outlined in the
Venting section of
this manual will result
in unsafe operation
of the water heater
causing death, serious
injury, explosion, or
fire. To avoid the risk
of fire, explosion,or
asphyxiation from
carbon monoxide,
NEVER operate the
water heater unless it
is properly vented
and has adequate
air supply for proper
operation as outlined
in the Venting section
of this manual.
WARNING: Use
UL approved Category
III Stainless Steel vent
material only. No
other vent material is
permitted.
Owner must refer to
vent manufacturer’s
instructions and
specifications. Z-Flex
information can
be found at www.
novaflex.com.
WARNING: Refer
to pages 19-21 for
clearances to
combustible material.
Installing the SH22i Water Heater
1/4” per foot
downwards slope
Insulation
Material
Inspection
Hole #1
*Reference Vent Manufacturer
Component Information - Page 29
Inspection
Hole #2
Ceiling
Board
Vent Pipe
Wall Thimble
