Installation Manual

Demand Duo™ H-Series Installation and Operation Manual 14
1. Choose the right hand truck to support the
weight and size of the water heater. Refer to
section “3.2 Specifications” in this manual for
specific weights and dimensions.
2. Use proper lifting techniques to load the
water heater onto the hand truck:
• Position the water heater onto the hand
truck so the weight is evenly balanced
and the tank is touching the rails of the
hand truck.
• Secure the water heater to the hand
truck:
− Position STRAP A around the
tankless unit as illustrated below.
− Position STRAP B around the base
of the tank below the lower
enclosure. Do not add strap around
the exhaust or vent connection.
Contaminant Maximum Level
Total Hardness Up to 200 mg/L
Aluminum * Up to 0.2 mg/L
Chlorides * Up to 250 mg/LL
Copper * Up to 1.0 mg/L
Dissolved Carbon Dioxide
(CO2)
Up to 15.0 mg/L
Iron * Up to 0.3 mg/L
Manganese * Up to 0.05 mg/L
pH * 6.5 to 8.5
TDS (Total Dissolved Solids) * Up to 500 mg/L
Zinc * Up to 5 mg/L
* Source: Part 143 National Secondary Drinking
Water Regulations
Air surrounding the water heater, venting, and
vent termination(s) is used for combustion and
must be free of any compounds that cause
corrosion of internal components. These include
corrosive compounds that are found in aerosol
sprays, detergents, bleaches, cleaning solvents,
oil based paints/varnishes, and refrigerants. The
air in beauty shops, dry cleaning stores, photo
processing labs, and storage areas for pool
supplies often contains these compounds.
Therefore, it is recommended to install as a direct
vent (use outside air for combustion). In
applications utilizing room air where there are
high levels of particulates, Rinnai offers a room
air screen.
The water heater, venting, and vent termination
(s) should not be installed in any areas where the
air may contain these corrosive compounds.
If you install this water heater in an area that is
known to have hard water or that causes scale
build-up, the water must be treated and may
require a more frequent flushing schedule.
This water heater includes a service indicator
(Service Soon, SS). When selected in the
parameter settings, an SS code will display on
the controller indicating that it is time to flush and
service the water heater. Scale build-up is
caused by hard water and can be accelerated if
the water heater is set at a temperature above
120°F.
Rinnai offers Southeastern Filtration’s
“ScaleCutter Water Conditioning System” that
offers superior lime scale prevention and
corrosion control by feeding a blend of control
compounds into the cold water supply.
Lower
Enclosure
Strap A
Strap B
Figure 4: Transport
Table 3: Water Quality Guidelines
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or ay
other appliance.
Flammable liquids such as cleaning solvents,
aerosols, paint thinners, adhesives, gasoline
and propane must be handled and stored with
extreme care. These flammable liquids emit
flammable vapors and when exposed to an igni-
tion source can result in a fire hazard or explo-
sion. Flammable liquids should not be used or
stored in the vicinity of this or any other gas ap-
pliance.