3
GENERAL SAFETY INFORMATION
PRECAUTIONS
DO NOT USE THIS WATER HEATER IF ANY PART HAS
BEEN EXPOSED TO FLOODING OR WATER DAMAGE.
Immediately call a qualified service technician to inspect the
water heater and to replace any part of the control system
which has been under water.
If the unit is exposed to the following, do not operate heater
until all corrective steps have been made by a qualified service
technician:
1.
External fire.
2. Damage.
3. Firing without water.
GROUNDING INSTRUCTIONS
This water heater must be grounded in accordance with the
National Electrical Code and/or local codes. These must
be followed in all cases. Failure to ground this water heater
properly may also cause erratic control system operation on
ELECTRONIC CONTROL models.
This water heater must be connected to a grounded metal,
permanent wiring system; or an equipment grounding
conductor must be run with the circuit conductors and
connected to the equipment grounding terminal or lead on
the water heater.
HYDROGEN GAS (FLAMMABLE)
Explosion Hazard
Flammable hydrogen gases
may be present.
Keep all ignition sources away
from faucet when turning on
hot water.
Hydrogen gas can be produced in a hot water system served
by this heater that has not been used for a long period of time
(generally two weeks or more). Hydrogen gas is extremely
flammable. To reduce the risk of injury under these conditions,
it is recommended that the hot water faucet be opened for
several minutes at the kitchen sink before using any electrical
appliance connected to the hot water system. If hydrogen is
present there will probably be an unusual sound such as air
escaping through the pipe as the water begins to flow. THERE
SHOULD BE NO SMOKING OR OPEN FLAME NEAR THE
FAUCET AT THE TIME IT IS OPEN.
Water temperature over 125°F (52°C)
can cause severe burns instantly
resulting in severe injury or death.
Children, the elderly and the
physically or mentally disabled are at
highest risk for scald injury.
Feel water before bathing or
showering.
Temperature limiting devices such as
mixing valves must be installed
when required by codes and to
ensure safe temperatures at fixtures.
Improper installation, use and service may result
in property damage.
Do not operate water heater if exposed to flooding or
water damage.
•
Inspect anode rods regularly, replace if damaged.
•
Install in location with drainage.
•
Fill tank with water before operation.
•
Properly sized thermal expansion tanks are required on all
closed water systems.
•
Refer to this manual for installation and service.
CAUTION
Explosion Hazard
Overheated water can cause
water tank explosion.
Properly sized temperature and
pressure relief valve must be
installed in the opening provided.
Read and understand this instruction
manual and the safety messages
herein before installing, operating or
servicing this water heater.
Failure to follow these instructions and
safety messages could result in death
or serious injury.
This manual must remain with the
water heater.
Explosion Hazard
Flammable hydrogen gases
may be present.
Keep all ignition sources away
from faucet when turning on
hot water.
• Before removing any access panels
or servicing the water heater, make
sure the power supply to the water
heater is turned off.
• Failure to follow these instructions
and safety messages could result in
death or serious injury.
Electrical Shock Hazard
When servicing this unit, verify the power to the unit is turned off prior to opening the control cabinet door.
Printed on 2/8/2018 9:05 AM CT
Summary of Contents for 52
Page 8: ...8 FEATURES AND COMPONENTS Figure 2 Electronic Control Modules Printed on 2 8 2018 9 05 AM CT...
Page 9: ...9 FEATURES AND COMPONENTS Figure 3 Surface Mount Control Models Printed on 2 8 2018 9 05 AM CT...
Page 52: ...52 Copyright 2017 All rights reserved www hotwater com Printed on 2 8 2018 9 05 AM CT...
