Lochinvar TNR-I&S-02 Installation & Service Manual
1
TNR-I&S-02
HIGH EFFICIENCY COMMERCIAL GAS WATER HEATER
TABLE OF CONTENTS
GENERAL INFORMATION ...................................................... 1
INSTALLATION .................................................................. 2
Locating The Water Heater ........................................... 2
Minimum Clearances ..................................................... 2
Venting ........................................................................ 6
Combustion Air Supply ................................................. 19
Water Connections ....................................................... 4
Gas Connections .......................................................... 14
GENERAL OPERATION ........................................................... 15
MAINTENANCE ..................................................................... 17
TROUBLESHOOTING GUIDE .................................................. 20
GENERAL INFORMATION
This gas-fired water heater is design certified by CSA International under
the American National Standard, Z21.10.3 (as indicated on the rating
plate) and CAN/CGA 4.3-M (as indicated on the rating plate) available
from CSA Standards Association, 178 Rexdale Blvd., Etobicoke, Ontario,
Canada M9W 1R3.
This water heater must be installed in accordance with local codes. In the
absence of local codes, it must be installed in compliance with the National
Fuel Gas Code (ANSI Z223.1-Latest Edition), or in Canada CAN/CGA B149.1
Natural Gas Installation Code (Latest Edition) or CAN/CGA B149.2 Propane
Installation Code (Latest Edition).
INSTALLATION & SERVICE MANUAL
WARNING
If the information in these instructions is not followed exactly, a
fire or explosion may result causing property damage, personal
injury or death.
WARNING
Keep clear of the combination temperature and pressure relief
valve discharge line outlet. The discharge may be hot enough to
cause scald injury. The water is under pressure and may splash.
For protection against excessive temperatures and pressure, install
temperature and pressure protective equipment required by local codes,
but not less than a combination temperature and pressure relief valve
certified by a nationally recognized testing laboratory that maintains periodic
inspection of production of listed equipment or materials as meeting the
requirements of the Standard for Relief Valves and Automatic Gas Shutoff
Devices for Hot Water Supply Systems, ANSI Z21.22 and the Standard
CAN1-4.4 Temperature, Pressure, Temperature and Pressure Relief Valves
and Vacuum Relief Valves. The combination temperature and pressure
relief valve must be marked with a maximum set pressure not to exceed
the maximum working pressure of the water heater. The combination
temperature and pressure relief valve rating must not be less than the
hourly rating of the water heater.
Install the combination temperature and pressure relief valve into the
opening provided and marked for this purpose on the water heater.
Note: Some models may already be equipped or supplied with an installed
combination temperature and pressure relief valve. Verify that the
combination temperature and pressure relief valve complies with local
codes. If the combination temperature and pressure relief valve does not
comply with local codes, replace it with one that does.
Install a discharge line so that water discharged from the combination
temperature and pressure relief valve will exit within six (6) inches (15.2
cm) above, or any distance below the structural floor and cannot contact
any live electrical part. The discharge line is to be installed to allow for
complete drainage of both the combination temperature and pressure
relief valve and the discharge line. The discharge opening must not be
subjected to blockage or freezing. DO NOT thread, plug or cap the discharge
line. It is recommended that a minimum clearance of four (4) inches (10.2
cm) be provided on the side of the water heater for servicing and
maintenance of the combination temperature and pressure relief valve.
Do not place a valve between the combination temperature and pressure
relief valve and the tank!
TEMPERATURE & PRESSURE RELIEF VALVE
Do not store or use gasoline or other flammable vapors and
liquids in the vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
telephone in your building.
• Immediately call your gas supplier from a neighbor’s
telephone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire
department.
Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
Use only vent terminals provided or factory authorized terminals for
venting this water heater.
This water heater is equipped with an adjustable thermostat to control
water temperature. Hot water temperatures required for automatic
dishwasher and laundry use can cause scald burns resulting in serious
personal injury and/or death. The temperature at which injury occurs
varies with the person’s age and the time of exposure. The slower
response time of disabled persons increases the hazards to them. NEVER
allow small children to use a hot water tap, or to draw their own bath water.
NEVER leave a child or disabled person unattended in a bathtub or shower.
Failure to properly install the vent and air intake (if applicable) system
could result in property damage, personal injury, or death.
DANGER
DO NOT store or use gasoline or other flammable, combustible, or corrosive
vapors and/or liquids in the vicinity of this or any other appliance.
DO NOT install any damaged venting system components. If damage is
evident then please contact the supplier where the water heater was
purchased or the manufacturer listed on the rating plate for replacement
parts.
DANGER