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Applications manual | 11.2007Bosch Water Heating
Applications manual
| 15
2.11 Powerstream Pro RP17PT, RP27PT
Features:
Over 90% effi ciency 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 fi ts virtually anywhere
No temperature/pressure relief valve necessary (unless required
by local codes)
Technical Specifi cations
Model RP17PT RP27PT
Effi ciency 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 fi ttings 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
Canada
80 (2x40 amps)
80 (1x80 amps)
120 (3x40 amps)
120 (1x120amps)
Wire
size
U.S.A
Canada
8 AWG
(4 conductors & ground)
Check Canadian
Electrical Code
(C22.1-02)
8 AWG
(4 conductors & ground)
Check Canadian
Electrical Code
(C22.1-02)
Phase Single Single
Maximum fl ow 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.
2 independent
40 amp double-pole
circuit breakers
RP17PT terminal block
Fig. 5 RP17PT Electrical Connections
3 independent
40 amp double-pole
circuit breakers
RP27PT terminal block
Fig. 6 RP27PT Electrical Connections