Gas Tankless Water Heaters

Therm 520 PN

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Bosch Gas Tankless Water Heater Therm 520 P

Piezo ignition system requires no electricity
Therm 520 PN

Product Overview

This Bosch Therm 520 PN model offer Piezo push-button ignition and utilizes a modulating gas valve to ensure a constant temperature at varying flow rates. The 520 PN is the perfect tankless solution for smaller families and households that only use no more than two hot water applications at a time.

While it provides endless hot water, it saves money because it only heats water when you need hot water.

Features & Benefits

Piezo ignition system requires no electrical connection
78%+ thermal efficiency
117,000 BTU maximum input
5.3 gallons per minute capacity at 35F degree rise
Endless hot water for up to 2 applications at a time
Minimum activation flow rate of 0.5 gallons per minute
High to low temperature control
Vents with galvanized B vent – natural draft
Built for durability and serviceability with 15-year warranty and 20+ year life expectancy
Available in NG and LP models

Warranty

15 year limited warranty on heat exchanger

2 year warranty on all other parts

Bosch Warranty Details

Product Warranty

Therm 520 PN	Specifications
Condensing/Non-Condensing	Non-Condensing
Application	Residential
Max Input (BTU)	117,000
Min Input (BTU)	30,725
Capacity at 35°F Rise (gpm)	5.3
Capacity at 55°F Rise (gpm)	3.4
Intelligent Cascading	No
Min Flow Rate	High - Low
Temp Range (°F)	n/a
Temp Stability (°F)	n/a
Default Temp (°F)	High - Low
Energy Factor	-
Thermal Efficiency	78%+
Installation Options	Indoor
Dimensions (w x h x d)	18½" x 36¾" x 10½"
Weight (lbs.)	35
Inlet Connection	½" NPT
Outlet Connection	½" NPT
Gas Connection	¾" NPT
Max Water Pressure	150 psi
Min Water Pressure	30 psi
Min NG Presure	5.7" WC
Condensing Heat Exchanger	n/a
Venting Options	Galvanized B-Vent
Vent Maximun Run	n/a
Energy Star Rated	No