Bosch Appliances GWH 425 PN/HN4GWH 4254 manual Technical Specifications, Electrical requirements

Applications manual 15

2.11 Powerstream Pro RP17PT, RP27PT

Features:

Over 90% efficiency rating

10-year warranty on heat exchanger Durable polymer construction External temperature control knob Thermal cut-out for safety

Flow sensor to provide a constant output temperature Provides an ENDLESS supply of hot water

Weighs less than 25 pounds and fits virtually anywhere

No temperature/pressure relief valve necessary (unless required by local codes)

		Technical Specifications
	Model	RP17PT	RP27PT
Efficiency		90%	94%
Dimensions		15 ½" x 15 ¼" x 4 ½"	15 ½" x 15 ¼" x 4 ½"
	Weight	20 lbs.	22 lbs.
Water fittings		¾" Male NPT	¾" Male NPT
Activation rate		0.6 gpm	0.8 gpm
Electrical requirements
	Volts	240	240
	Kilowatts	17.25kW	26.85kW
Amps	U.S.A	80 (2x40 amps)	120 (3x40 amps)
	Canada	80 (1x80 amps)	120 (1x120amps)
Wire	U.S.A	8 AWG	8 AWG
size		(4 conductors & ground)	(4 conductors & ground)
	Canada	Check Canadian	Check Canadian
		Electrical Code	Electrical Code
		(C22.1-02)	(C22.1-02)
	Phase	Single	Single
Maximum flow rate at given temperature rise
45°F Rise		2.6 gpm	4.0 gpm
50°F Rise		2.3 gpm	3.7 gpm
60°F Rise		2.0 gpm	3.0 gpm
70°F Rise		1.7 gpm	2.6 gpm
80°F Rise		1.5 gpm	2.2 gpm

Installation guidelines:

Electrical:

Minimum electrical service for RP17PT is 150 amps. Minimum electrical service for RP27PT is 200 amps. Minimum wire size for both models is 8 AWG.

Plumbing:

Do not solder directly to connections on the bottom of the unit. Use unions to facilitate easy future maintenance.

Use full port ball valves for isolation valves.

RP17PT terminal block

2 independent

40 amp double-pole circuit breakers

Fig. 5 RP17PT Electrical Connections

RP27PT terminal block

3 independent

40 amp double-pole circuit breakers

Fig. 6 RP27PT Electrical Connections

Bosch Water Heating Applications manual 11.2007