Flo-Rite-Temp Model 665DWP-PR

Flo-Rite-Temp Model 665DWP-PR Instantaneous Steam/Water Heater pre-piped single temperature packaged assembly designed for a Recirculating Hot Water System.

Flo-Rite-Temp Model 665DWP-PR double wall instantaneous water heater uses a double-wall tube to provide positive separation of the steam and water in the heat exchanger. The area between the walls of the tubes vents to atmosphere so you can detect tube failure without cross-contaminating either the steam or water. The Flo-Rite-Temp 665DWP-PR is well suited for all hot water applications where steam is available and plumbing codes or safety requirements prevent the heating medium and the potable water supply from being cross-contaminated.

Flo-Rite-Temp Model 665 Double Wall (DW) Pre-Piped (P-PR) Single Temperature Systems are fully assembled and include the following installation components:

Steam Trap
Air Vent
Thermometers
CIP Connection Port
Flow Control/Isolation Valves
Thermostatic Diverting Valve

Ideal for both new construction and retrofit installation within an existing building infrastructure. Flo-Rite-Temp 415 DWP-PR is designed to fit through a standard 32" doorway.

Flo-Rite-Temp Model 665DWP-PR Instantaneous Steam/Water Heater features a 6" diameter shell and a non-helical straight internal tube bundle with end cap.

Flo-Rite-Temp Model 665DWP-PR has 65 GPM capacity with 15PSI steam at a 100°F temperature rise.

Flo-Rite-Temp Model 665DWP-PR features a unique feed forward design which features a differential pressure diaphragm actuated mixing unit integral to a shell and tube heat exchanger.

The Flo-Rite-Temp Model 665DWP-PR mixing unit manages the water flow through the heat exchanger based upon downstream hot water demand and eliminates the requirement for a modulating steam control valve.

Operating on constant low pressure (2-15PSI) steam, the Flo-Rite-Temp Model 665DWP-PR mixing unit supplies water to the heat exchanger where it is overheated and then returned to the mixing unit for proportional re-mixing with cold water to a pre-set outlet temperature.

For submittal drawing refer to:
Model 415P-PR	Single Wall	S5468
Model 415DWP-PR	Double Wall	S5514
Model 535P-PR	Single Wall	S5469
Model 535DWP-PR	Double Wall	S5515
Model 665P-PR	Single Wall	S5470
Model 665DWP-PR	Double Wall	S5516
Model 8120P-PR	Single Wall	S5471
Model 8120DWP-PR	Double Wall	S5517

Flo-Rite-Temp Instantaneous Steam/Water Heater
Model	Entering Water Temperature	Outlet Temperature
Model	Entering Water Temperature	120	130	140	160	180
415DWP-PR	40	20	18	16	12	7
	50	20	20	17	13	7
	60	-	20	19	14	7
535DWP-PR	40	45	39	34	26	16
	50	45	43	37	28	17
	60	-	45	40	30	18
665DWP-PR	40	80	73	63	48	32
	50	80	80	68	51	33
	60	-	80	75	55	35
8120DWP-PR	40	145	145	120	95	59
	50	145	145	134	102	72
	60	-	145	145	115	90

Note: All flow rates in gallons per minute and using 15 PSIG steam.

Flo-Rite-Temp Model 665DWP-PR

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