Part 7 - Connecting Electrical Service; Wiring; Dip Switches - Westinghouse Premium WGRT 199 Series Installation, Start-Up, Maintenance, Parts, Warranty

Part 7 - Connecting Electrical Service

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. 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.
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.
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.
A. Wiring
The heater is equipped with a three prong power cord. The heater is
limited to a maximum of 8 amps at 120 volts in use.
Figure 33 - Proper Grounding - Internal Manual Power Switch
1. This water heater must be properly grounded. Ensure the electrical
receptacle is properly grounded. Do not remove the grounding prong
from the water heater 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 water heater.
Read, understand, and follow all wiring instructions supplied with
the controls.
5. 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.
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.
B. 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 34 - DIP Switch Detail
DIP SWITCH
1-3 Factory Factory Settings - DO NOT CHANGE
Flow Control
4
Valve
5
Gas Type
6 High Fire
7 Low Fire
Table 21 - DIP Switch Group - NOTE: DO NOT CHANGE SWITCHES 1-3.
THESE ARE FACTORY SETTINGS.
Maximum Flame Detecting Voltage
Pre-Purge Time (Tp)
Safety Time (Igniting Time) (Ts)
Igniting Interval Time
Post-Purge Time (Tip)
Over-Heating 1, 2, 3, Protection
Detection Time
Temperature Sensor Fault Detection
Time
# of Ignition Attempts (Ntl)
DHW Setpoint Temperature Range
DHW Off Temperature
DHW On Temperature
DHW Water On Minimum Water Flow
DHW Water Off Minimum Water Flow
Table 22 - System Control Settings
whl-004 Rev. 000 Rel. 013 Date 5.1.18
OFF ON
On Off
LP NG
Normal High Fire
Normal Low Fire
2.5V
Maximum 10 seconds,
minimum 1 second
3.5 seconds
<10 seconds
2 minutes
<1 second
<2 seconds
10
o o
95 - 140 F (35 - 60 C)
DHW Target Temperature
+ DHW Differential
o o
Temperature 18 F (10
Below DHW Target
o o
Temperature 9 F (5 C)
.5 gallons (2 liters) (12Hz)
.4 gallons (1.5 liters) (8Hz)
39
C)