lp-673 Rev. 000 Rel. 001 Date 8.30.18
28
Part 7 - Connecting Electrical Service
ELECTRICAL SHOCK HAZARD – To ensure safety, turn off electrical
power supply at service entrance panel before making any
electrical connections to avoid possible electric shock hazard.
Failure to do so could result in property damage, serious personal
injury, or death.
Jumping out control circuits or components WILL VOID product
warranty and can result in property damage, personal injury, or
death.
Install wiring and electrically ground water heater in accordance
with the authority having jurisdiction or, in the absence of such
an authority, follow the National Electrical Code, NFPA 70, and/or
CSA C22.1 Electrical Code-Part 1 in Canada. Ensure all wiring to
the water heater is watertight and protected from the elements.
Failure to follow all applicable local, state, and national regulations,
mandates, and building supply codes for guidelines to install the
electrical power supply could result in property damage, serious
personal injury, or death.
B. Line Voltage Wiring
It is of extreme importance that this unit be properly grounded. It
is very important that the building system ground is inspected by
a qualified electrician prior to making this connection. Electrical
power must only be turned on when the heater is completely
filled with cold water. Failure to follow these instructions could
result in component or product failure, serious injury, or death.
Label all wires prior to disconnecting them when servicing the
heater. Wiring errors can cause improper and dangerous operation.
Failure to follow these instructions may result in property damage
or personal injury.
Figure 21 - Knockout Locations
If the water heater display does not turn on, first check the plug.
Then check the electrical panel circuit breaker and reset if necessary.
If the circuit breaker trips again, do not reset. Disconnect the plug
and have a qualified technician diagnose the problem.
C. Dip Switches
There is one DIP switch. DIP switches 6 and 7 need to be set to OFF for
the water heater to operate normally.
Figure 22 - Internal Manual Power Switch
DIP SWITCH
OFF
ON
1-3
Factory
Factory Settings - DO NOT CHANGE
4
Vent Size
Factory Settings - DO NOT CHANGE
5
Gas Type
LP
NG
6
High Fire
Normal
High Fire
7
Low Fire
Normal
Low Fire
Table 18 - DIP Switch Group - NOTE: DO NOT CHANGE SWITCHES 1-3.
THESE ARE FACTORY SETTINGS.
Table 19 - System Control Settings - *NOTE: Zero Activation with Internal
Recirculation Mode Active
A. Field Wiring
Terminations
All connections made
to the water heater in
the field are done to
the terminal blocks
located inside the front
of the unit. Multiple
knockout locations are
available to route field
wires into and out of
the water heater.
Figure 23 - A - Line Voltage Wiring Terminal Block, and B - Terminal Block
Wired through Knockout
Knockout Locations for Wiring to Terminal Blocks
1. Wiring should be
performed by a qualified
electrician in accordance
with local codes.
2. The heater is limited to a maximum of 8 amps at 120 volts in use.
3. Connect the incoming power wiring to the line voltage terminal
strip in the electrical junction box at terminals L (Line Voltage), N
(Neutral), and G (Ground) (shown in Figure 30).
4. A line voltage fused disconnect switch may be required, externally
mounted and connected according to local codes that may apply.
5. This water heater must be properly grounded. Do not attach
the ground wire to either the gas or water piping, or to any other
grounding circuits that require a GFCI or AFCI.
6. The wiring diagrams in this manual are to be used for reference
purposes only.
7. Refer to these diagrams and the wiring diagrams of any external
controls used with the installation when wiring the water heater.
Read, understand, and follow all wiring instructions supplied with
the controls.
MAIN POWER
L
N
G
Figure 24 - Dip Switches
A
B
8. Do not disconnect the power supply when the water heater is in
normal operation.
NOTE:
For additional electrical protection, the use of a whole house
surge protector is recommended. Damage caused by power surges IS
NOT covered by the warranty.
Maximum Flame Detecting Voltage
2.4V
Pre-Purge Time (Tp)
5 seconds
Safety Time (Igniting Time) (Ts)
1 second
Igniting Interval Time
<10 seconds
Post-Purge Time (Tip)
3 minutes
Over-Heating 1, 2, 3, Protection
Detection Time
<2 seconds
Temperature Sensor Fault Detection
Time
<3 seconds
# of Ignition Attempts (Ntl)
5
DHW Setpoint Temperature Range
95 - 160
o
F (35 - 71.1
o
C)