Crown Boiler 24-11, 24-10, 24-12, 24-06, 24-05, 24-03 Schematic Tankless Heater Piping 24-08 24-09

Figure 37: Minimum Piping Requirements for Series 24 Tankless Heater Manifolds

	Table IV Tankless Heater Ratings
	Boiler	Number of T-4 Tankless Heaters
			Installed
	Model	1	2	3	4
	24-03	6.75	---	---	---
	24-04	7.5	---	---	---
	24-05	7.5	---	---	---
	24-06	7.5	15	---	---
	24-07	7.5	15	---	---
Figure 38: Schematic Tankless Heater Piping	24-08	7.5	15	---	---
	24-09	7.5	15	22.5	---
	24-10	7.5	15	22.5	---
	24-11	7.5	15	22.5	---
	24-12	7.5	15	22.5	30
	Notes:

1. Ratings are given in gallons per minute continuous flow of water heated from 40°F to 140°F with 200°F boiler water.

2. For tankless heater quantities less than maximum allowable, it is important that water heaters be centrally located in the boiler.

See Figure 8 for appropriate locations.

3. Tankless heater pressure drop is 5.5 PSI at

7.5 GPM.

42