Eternal GU145 (S), Operation Manual

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Restaurant and Commercial Applications
System for rapid ON/OFF hot water usage
If the unit is not controlling the pump by the internal relay, use a Aquastat pump and set at 20 ° F below
Eternal temperature setting.
Note 1 :
System for rapid ON/OFF and large volume usage
If the unit is not controlling the pump by the internal relay, use a Aquastat pump and set at 20 ° F below Eternal temperature setting.
Note 1 :
WARNING
!
Pump control such as aquastat or timer and aquastat must be used in recirculation application or short cycle may
occur and cause premature failure. Failure to comply with this warning will void warranty.
!
NOTE
!
For restaurants or applications where rapid on/off hot water usage is frequent, i.e. handheld sprays, Eternal
recommends the use of a recirculation pump with storage as buffer. This recommendation is designed to prime
the units for rapid usage, as the burner will not ignite during rapid on/off usage due to the intermittent nature
of the application. Without a constant flow, the unit will only supply hot water from the storage tank and will not
recover rapidly without sufficient on-demand signal to sustain ignition.
!
NOTE
!
If there is a dishwasher that can consume a large amount of water in a very short time. For example, 6 gallons in
15 seconds, then recirculation and an optional storage tank is needed.
!