Installation Manual

whl-007 Rev. 1.14.15
2
The following dened terms are used throughout this manual
to bring attention to the presence of hazards of various risk
levels or to important product information.
DANGER indicates an imminently hazardous situation which,
if not avoided, will result in serious personal injury or death.
WARNING indicates a potentially hazardous situation which, if
not avoided, could result in personal injury or death.
CAUTION indicates a potentially hazardous situation which, if
not avoided, may result in moderate or minor personal injury.
CAUTION used without the safety alert symbol indicates
a potentially hazardous situation which, if not avoided, may
result in property damage.
NOTICE is used to address practices not related to personal
injury.
Foreword
This manual is intended to be used in conjunction with other
literature provided with the water heater. This includes all
related control information. It is important that this manual,
all other documents included in this system, and additional
publications including the Code for the Installation of Heat
Producing Appliances (latest version), be reviewed in their
entirety before beginning any work.
Installation should be made in accordance with the regulations
of the Authority Having Jurisdiction, local code authorities, and
utility companies which pertain to this type of water heating
equipment.
Authority Having Jurisdiction (AHJ) – The AHJ may be a federal,
state, local government, or individual such as a re chief, re
marshal, chief of a re prevention bureau, labor department
or health department, building ocial or electrical inspector,
or others having statutory authority. In some circumstances,
the property owner or his/her agent assumes the role, and
at government installations, the commanding ocer or
departmental ocial may be the AHJ.
NOTE: Westinghouse reserves the right to modify product
technical specications and components without prior notice.
For the Installer
This water heater must be installed by qualied and licensed
personnel. The installer should be guided by the instructions
furnished with the water heater, and by local codes and utility
company requirements.
Installations Must Comply With:
Local, state, provincial, and national codes, laws, regulations,
and ordinances.
Part 1 - General Safety Information
This water heater is approved for indoor installations only
and is not intended for use as a pool heater. Clearance to
combustible materials: 0” top, bottom, sides, and back. Heater
must have room for service: 24” front, 6” top, and 0” sides are
minimum recommended service clearances. (A combustible
door or removable panel is acceptable front clearance.) This
water heater has been approved for closet installation and
installation on combustible ooring. Do not install directly
on carpeting. Install the water heater in a location where
temperature and pressure relief valve discharge or a leak will
not result in damage to the surrounding area. If such a location
is not available, install an auxiliary catch pan.
Installer - Read all instructions in this manual before
installing. Perform steps in the given order.
User - This manual is for use only by a qualied heating
installer / service technician. Have this water heater serviced
/ inspected annually by a qualied service technician.
FAILURE TO ADHERE TO THESE GUIDELINES CAN
RESULT IN SUBSTANTIAL PROPERTY DAMAGE, SEVERE
PERSONAL INJURY, OR DEATH.
Table of Contents
Part 1 - General Safety Information 2
A. When Servicing the Water Heating System 3
B. Heater Water 3
C. Freeze Protection 3
D. Water Temperature Adjustment 3
Part 2 - Prepare the Water Heater 3
A. Locating the Water Heater 4
B. Water Chemistry Requirements 4
Part 3 - Piping 6
A. Plumbing 6
B. Boiler Connections 6
C. Domestic Piping Inlet 6
D. Auxiliary Connections 6
E. Temperature and Pressure Relief Valve 7
F. Scalding 7
G. Potable Expansion Tank 8
H. Pressure Drop Sizing For Circulator 8
I. Applications 9
Part 4 - Heater Control and Wiring 10
A. Control 10
B. Wiring 10
C. Wiring Diagrams 10
Part 5 - Start-Up and Operation 11
Part 6 - Maintenance and Troubleshooting 12
Limited Warranty 14
Customer Installation Record Form 16
NOTE: Obey all local codes. Obtain all applicable permits
before installing the water heater.
NOTE: Install all system components and piping in such a
manner that does not reduce the performance of any re
rated assembly.