Technical Specifications

whl-648 Rev. 000 Rel. 003 Date 3.6.18
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Part 7 - Connecting Electrical Service
ELECTRICAL SHOCK HAZARD – To ensure safety, turn o 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 appliance 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. 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.
A. Wiring
The appliance is equipped with a three prong power cord. The
appliance is limited to a maximum of 15 amps at 120 volts in use.
It is of extreme importance that this unit be properly grounded. It
is very important that the building system ground is inspected by
a qualied electrician prior to making this connection. Electrical
power must only be turned on when the appliance is completely
lled 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
appliance. Wiring errors can cause improper and dangerous
operation. Failure to follow these instructions may result in
property damage or personal injury.
Figure 31 - Proper Grounding - Internal Manual Power Switch
1. This appliance must be properly grounded. Ensure the electrical
receptacle is properly grounded. Do not remove the grounding prong
from the appliance plug.
2. Do not attach the ground wire to either the gas or water piping.
3. The wiring diagrams in this manual are to be used for reference
purposes only.
4. Refer to these diagrams and the wiring diagrams of any external
controls used with the installation when wiring the appliance. Read,
understand, and follow all wiring instructions supplied with the
controls.
5. Do not disconnect the power supply when the appliance 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.
If the appliance display does not turn on, rst 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 qualied technician diagnose the problem.
B. Dip Switches
There is one set of DIP switches. DIP switches 6 and 7 need to be set to
OFF for the appliance to operate normally.
Figure 32 - Proper Grounding - Internal Manual Power Switch
DIP SWITCH OFF ON
1-3 Factory Factory Settings - DO NOT CHANGE
4 Vent Size 2” 3”
5 Gas Type LP NG
6 High Fire Normal High Fire
7 Low Fire Normal Low Fire
Table 19 - DIP Switch Group - NOTE: DO NOT CHANGE SWITCHES 1-3.
THESE ARE FACTORY SETTINGS.
Maximum Flame Detecting Voltage 2.4V
Pre-Purge Time (Tp)
Maximum 10 seconds,
Minimum 1 second
Safety Time (Igniting Time) (Ts) 3.5 seconds
Igniting Interval Time 20 seconds
Post-Purge Time (Tip) 3 minutes
Over-Heating 1, 2, 3, Protection
Detection Time
<3 seconds
Pump 1 Post Circulating Time (T1pv) 1 minute
Pump 2 Post Circulating Time (T2pv) 1 minute
High and Low Water Level Detection
Time
<6 seconds
High and Low Water Level Recovery
Time
<6 seconds
Table 20 - System Control Settings