Rinnai Tankless Water Heater Installation and Operation Manual
17
4.
4. Install the Water Heater
Install the Water Heater
THIS SECTION IS INTENDED FOR THE
INSTALLER
Installer qualifications: A trained and qualified
professional must install the appliance, inspect
it, and leak test the water heater before
use. The warranty will be voided due to any
improper installation. The trained and qualified
professional should have skills such as: Gas
sizing; Connecting gas lines, water lines, valves,
and electricity; Knowledge of applicable national,
state, and local codes; Installing venting through
a wall or roof; and training in installation of
tankless water heaters. Training for Rinnai
Tankless Water Heaters is accessible online at
www.trainingevents.rinnai.us.
4.1 Installation
Guidelines
When installing the water heater, follow these
guidelines:
•
This water heater is certified for instal
-
lation in residential applications and
manufactured (mobile) homes.
•
This water heater is suitable for combi
-
nation water heating and space heating
and not suitable for space heating appli
-
cations only.
•
The installation must conform with local
codes or, in the absence of local codes,
with the National Fuel Gas Code, ANSI
Z223.1/NFPA 54, or the Natural Gas and
Propane Installation Code, CSA B149.1.
If installed in a manufactured home, the
installation must conform with the Manu
-
factured Home Construction and Safety
Standard, Title 24 CFR, Part 3280 and/
or CAN/SCA Z240 MH Series, Mobile
Homes.
•
The appliance, when installed, must be
electrically grounded in accordance with
local codes or, in the absence of local
codes, with the National Electrical Code,
ANSI/NFPA 70, or the Canadian Electri
-
cal Code, CSA C22.1.
•
The appliance and its main gas valve
must be disconnected from the gas sup
-
ply piping system during any pressure
testing of that system at test pressures
in excess of 1/2 psi (3.5 kPa) (13.84 in
Wc). For system testing at pressures
less than or equal to 1/2 psi (3.5 kPa)
(13.84 in Wc) the appliance must be iso
-
lated from the gas supply piping by clos
-
ing its individual manual shutoff valve.
•
You must follow the installation instruc
-
tions and those in section “4.5 Vent the
Water Heater” for adequate combustion
air and exhaust.
•
If a water heater is installed in a closed
water supply system, such as one
having a backflow preventer in the cold
water supply line, means shall be provid
-
ed to control thermal expansion. Contact
the water supplier or local plumbing
inspector on how to control thermal
expansion.
•
Should overheating occur or the gas
supply fail to shut off, turn off the manual
gas control valve to the appliance.
(En cas de surchauffe ou si l’alimen
-
tation en gaz ne s’arrête pas, fermez
manuellement le robinet d’arrêt de l’ad
-
mission de gaz.)
•
Combustion air must be free of chem
-
icals, such as chlorine or bleach, that
produce fumes. These fumes can dam
-
age components and reduce the life of
your appliance.
Topics in this section
• Installation Guidelines
•
What you will need
•
Choose Installation Location
• Mount Water Heater to the Wall
• Vent Water Heater
•
Connect Water Supply
•
Install Isolation Valves
•
Install Pressure Relief Valve
•
Connect Condensate Drain
•
Connect Gas Supply
•
Connect Power Supply
•
Configure Parameter Settings
•
Connect External Pump with Circ-Logic
•
Post-Installation Checklist
