By Coates Heater Co.
Model # 1.5ILS
Alternate Part #'s 15ILS, 46-225-1012
ILS Series: 1.5kW & 5.5kW
The built in pressure switch prevents operation when there is no water flow and allows operation at flow rates between 15GPM and 80GPM. The stainless steel tank is designed to optimize heat transfer by directing the water flow over the incoloy elements efficiently
Standard Features:
Replacable incoloy element
Close differential thermostat
Manual reset hi-limit
Pressure switch
Element "on" light
Contactor (Mod. 6ILS)
1-1/2 x 2 inch PVC union connections
Technical Data:
UL Listed for Indoor Installation
Control Box Dimensions(inches): 12 x 6 x 6
Overall Length(inches): 19-1/2 with unions
Length w/o unions(inches): 15
Approximate Ship Weight: 10 lbs
Does this unit come with a power cord? If so how does it get hooked into the unit?
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The heater does not come with a cord. There is a wiring diagram that comes with the heater. it is a standard 3 wire 115/120v connection.
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Can you tell me about how long this unit will bring a 500
gallon hot tub to about 100 degrees?
Reply
Hello Richard - The time it takes to heat the spa to 100° depends on what the water temperature is when the heater starts. If the water starts at 70°, it will take the Coates 1.5ILS 24 hours to heat a 500 gallon spa to 100°.
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Can this be used to augment a heat pump for a swimspa* during extra cold days?
Thanks
(*1700 gal large spa/ small pool)
Reply
You can add this heater to your system before the heat pump to help increase the temperature of the water as to lessen the work load of the heat pump but whether it would be more cost efficient would depend on your local electrical costs and usage. Also if the air temperature is too cold the heat pump will not work regardless if this heater is working.
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