8
Water Inlet Flow Rate Adjustment:
Hot water dispensers can be connected to 208, 220, or 240 volts, depending on the electrical configuration of the
building. By controlling the incoming water pressure, the amount of fresh water entering the tank is synchronized with
the rate at which the water can be heated. This ensures a uninterrupted supply of water within the range of the
thermostat settings, 195°-205°F. When dispensing water at a rate which exceeds the unit’s capacity to heat, the flow of
water out of the faucet will be diminished to maintain the proper temperature.
The dispenser’s static water pressure is factory set at the proper setting for a 220 volt power supply, unless otherwise
ordered. If it is necessary to change this setting, remove the cover and locate the pressure gauge near the back of the
unit. The adjusting screw is located directly behind the gauge. With the power switch on, and the water tank full, turn the
adjusting screw until the PSI setting matches the chart below for your particular model.
There is no flow rate adjustment for the HWB-25. This model has a device that restricts the flow of water to 0.8
gallons per minute.
Supplied Static Pressure PSI Settings on the pressure gauge
VAC HWB-5 HWB-10 HWB-15 1
ph
HWB-15 3
ph
HWB-25
208 VAC
⊕
30 30
⊕
N/A
*220 VAC
30 35 35
⊕
N/A
240 VAC
⊕
50 50
⊕
N/A
*
normal factory setting
⊕
not available at time of publication
Basic Troubleshooting
HWB-5 / 10 / 15 / 25 Gallon Hot Water Dispensers
Dispensing Problem Possible Cause Solution
Faucet drips Worn seat cup
Broken Faucet spring
When you have replacement parts,
turn the power off on the dispenser.
Drain water from the faucet until it
stops. This may be a large volume.
When water stops you may now
safely remove the upper assembly
and replace parts.
Ready Light not “ON” Not up to set Temperature yet Wait at least 30 minutes (depends on
the size) after turning the dispenser
ON.
Internal circuit breaker tripped Turn the power switch on the front of
the dispenser OFF then back ON
again to reset.
No power to the dispenser Reset circuit breaker on the wall. Off
then On.
Not hot enough Using water faster than dispenser can
recover
Always insure that the ready light is
on before drawing water. If problem
persists purchase larger size
dispenser.
Thermostat set to low Adjust thermostat per Users Guide
Sight Gauge leaks Loose sight gauge cap Tighten chrome cap on top of gauge
Broken gauge tube or gasket Turn off sight gauge valve located at
the base of the gauge.
ON
= posts up
and down.
OFF
= posts front to back.
Tighten or replace parts as required
and open valve
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