Waiwela WM-2.5, WM-4.0, WM-6.0 Installation And Operating Insctruction Manual
Electric Mini Tank
Water Heaters
WM-2.5
WM-4.0
WM-6.0
Installation and Operating Instruction Manual
Table of Contents
Important Safety Instructions 2
Technical Data 3-4
General Information 5
Technical Description 6
Installation Instructions 6-10
Plumbing Connections 7
Temperature & Pressure Relief Valve 7-8
Filling The Water Heater 9
Electrical Connections 10
Instructions For Use 11
Maintenance Instructions 12-14
Trouble Shooting 15
Schematic Disassembly & Parts List 16
Warranty 17-19
Page 1
IMPORTANT SAFETY INSTRUCTIONS
WARNING: When using electrical appliances, safety precautions to reduce the risk
of re, electric shock or injury to persons should be followed, including:
1.
2. This water heater must be grounded. Connect only to properly grounded outlet.
See “GROUNDING INSTRUCTIONS” found on page 10.
3. Install or locate this water heater only in accordance with the provided
installation instructions.
4. Use this water heater only for its intended use as described in this manual.
5. Do not use an extension cord set with this water heater. If no receptacle is
available adjacent to the water heater, contact a qualied electrician to have
one properly installed.
6. As with any appliance, close supervision is necessary when used by children.
7. Do not operate this water heater if it has a damaged cord or plug, if it is not
working properly, or if it has been damaged or dropped.
8. This water heater should be serviced only by qualied service personnel.
Contact nearest authorized service facility for examination, repair, or adjustment.
READ ALL INSTRUCTIONS BEFORE USING THIS WATER HEATER.
SAVE THESE INSTRUCTIONS
The manufacturer and/or distributor is not responsible for damages caused by
improper installation, or by non observance of the instructions in this manual.
A QUALIFIED, LICENSED TECHNICIAN MUST ALWAYS INSTALL THE WATER HEATER
AND CONDUCT ALL SUBSEQUENT SERVICE WORK AND/OR MAINTENANCE.
IMPORTANT!!!
NEVER TURN THE WATER HEATER POWER ON UNTIL THE TANK IS COMPLETELY FULL
AND WATER IS FLOWING OUT OF THE HOT WATER FAUCET.
Page 2
Temperature and
Pressure Relief Valve
Water inlet
Water outlet
water outlet
water inlet
Technical Data
MODEL WM-2.5 WM-4.0 WM-6.0
Capacity gallons 2.5 4.0 6.0
Voltage Vac 110-120 110-120 110-120
Power at 120 Vac Watts 1440 1440 1440
Max. Water Pressure psi 150 150 150
Weight (empty) lbs. 20 24 26
Amperage Amps 12 12 12
Phases 1 1 1
Assembly Figure
Water Flow Figure
Page 3
Switch
Heating element
(
1
/
/
1
Sw itc h
Schematic Construction
$
%
&
Dimensions
Model WM-2.5 WM-4.0 WM-6.0
A (inch) 14 1/2” 19 1/4” 18”
B (inch) 11 3/4” 11 3/4” 15 3/4”
C (inch) 10 3/8” 10 3/8” 15 1/2”
Thermostat
Overheat Limiter
Indicate Light
Heating Element
Power Plug
Switch
Wire
Support
Wiring Diagram
Page 4
GENERAL INFORMATION
The WaiWela Mini Tank water heaters can be used in most under the
counter, point of use applications. Models WM-2.5, WM-4.0 and WM-6.0
are designed to supply hot water for all hand wash and kitchen sinks in a
residential, commercial or industrial environment.
The WM-2.5, WM-4.0 and WM-6.0 can replace traditional central hot water heaters thereby conserving water and reducing energy waste.
The WaiWela Mini tank water heaters are lightweight and compact and
manufactured for easy installation. The WM-2.5, WM-4.0 and WM-6.0
are designed to be mounted on the wall.
WM-2.5, WM-4.0 and WM-6.0 are designed to operate at 150 psi maxi-
mum water pressure. Install a pressure reducing valve if your water
pressure is greater than 150 psi.
CAUTION!: The manufacturer cannot be responsible for the damage
caused by improper installation or by failure to follow instructions in this
manual. Comply with the Installation Instructions before connecting to
electrical outlet.
CAUTION!: The thermostat has been pre-set at the factory between
41°C (105°F) and 45°C (113°F).
CAUTION!: 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 2 weeks or more). Hydrogen gas is extremely ammable. To
reduce the risk of injury under these conditions, it is recommended that
the hot water faucet be opened for several minutes at the nearest and
most distant sink being served by this water heater before using any
electrical appliance connected to the hot water system i.e. Dishwasher.
If hydrogen gas is present, there will probably be an unusual sound such
as air escaping through the faucet as the water begins to ow. There
should be no smoking or open ame near the faucet at this time.
WARNING: Installer should review the contents of this manual with the
owner upon completion of the installation, and the manual should remain
with the owner and placed in a location close to the water heater.
Page 5
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