Installation Manual

34
WHL-015 REV. 12.17.14
on the pressure relief valve is equal to or greater than the maximum input BTU/H rating of the combination appliance.
To avoid water damage or scalding due to relief valve operation:
 Discharge line must be connected to relief valve outlet and run to a safe place of disposal. Terminate the discharge line in a
manner that will prevent possibility of severe burns or property damage should the relief valve discharge.
 Discharge line must be as short as possible and the same size as the valve discharge connection throughout its entire length.
 Discharge line must pitch downward from the valve and terminate at least 6” above the floor drain, making discharge clearly
visible.
 Discharge line shall terminate plain, not threaded, with a material serviceable for temperatures of 375
o
F or greater.
 Do not pipe discharge to any location where freezing could occur.
 No shutoff valve may be installed between the relief valve and appliance or in the discharge line. Do not plug or place any
obstruction in the discharge line.
 Test the operation of the relief valve after filling and pressurizing the system by lifting the lever. Make sure the valve
discharges freely. If the valve fails to operate correctly, replace it with a new relief valve.
 Test relief valve at least once annually to ensure the waterway is clear. If valve does not operate, turn the appliance “off” and
call a plumber immediately.
 Take care whenever operating relief valve to avoid scalding injury or property damage.
 For appliances installed with only a pressure relief valve, the separate storage vessel must have a temperature and pressure
relief valve installed. This relief valve shall comply with Relief Valves for Hot Water Supply Systems, ANSI Z21.22 CSA4.4.
FAILURE TO COMPLY WITH THE ABOVE GUIDELINES COULD RESULT IN FAILURE OF RELIEF VALVE OPERATION,
RESULTING IN POSSIBILITY OF SUBSTANTIAL PROPERTY DAMAGE, SEVERE PERSONAL INJURY, OR DEATH.
PART 9 – CONNECT ELECTRICAL POWER / INITIAL STARTUP
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.
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.
A. GENERAL OPERATING CONDITIONS
 Temperature
o Operating Ambient Temperature Range: 14 – 140
o
F (-10 to 60
o
C)
o Operating Relative Humidity: Up to 90% at 104
o
F (40
o
C)
B. WIRING INFORMATION
1. This appliance must be properly grounded. Ensure the electrical outlet (120V / 15 Amp minimum) that the appliance will be plugged
into is properly grounded.
This appliance is equipped with a three prong plug. It should only be plugged directly into a properly grounded three prong receptacle.
DO NOT remove the ground plug from the plug. Doing so could result in property damage, serious personal injury, or death.
2. The wiring diagrams contained in this manual are to be used for reference purposes only.
3. 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.
4. Do not disconnect the power supply when the appliance is in normal operation.
NOTE: For additional electrical protection, the use of a surge protector is recommended. Damage caused by power surges is not
covered by the warranty.