Appliance Details; 520 Hn Specifications (Technical Data) - Bosch 520-HN -L Manual

Fig. 1
3

Appliance details

3.1

520 HN specifications (Technical data)

Approved in US/Canada
Capacity
520 HN: 4.36 GPM
Accessories (Bosch part #)
• Freeze prevention kit (7709003775)
• Pressure relief valve (FWL-2)
Water protection
• IP X4.
Safety devices
Flame failure device (ionization flame rod)
Pressure relief valve (Available as accessory)
520 HN
Overheat prevention (temperature limiter).
Table 2
1)
1) The freeze prevention kit is designed to provide protection
- The freeze prevention kit will not protect plumbing outside the
Capacity
Minimum input
Maximum input
Minimum output
Maximum output
Thermal efficiency
(Efficiency in %)
Gas Requirement
Gas connection
Inlet gas pressure under maximum operation:*
Propane
* To measure Gas Pressure, see Measuring Gas Pressure,
chapter 3.7.
Natural Gas
Water
Hot water connection
Cold water connection
Minimum water flow
Minimum recommended
water pressure
Water valve material
1)
Temperatures rises:
for the water heater down to approximately 5°F for short
term conditions only. It will not protect the appliance in
areas where the temperature is routinely expected to be
below freezing.
appliance from freezing. Precautions should be taken.
Appliance details | 7
BTU/hr 30 735 Btu/hr
BTU/hr 117 000 Btu/hr
BTU/hr 23 906 Btu/hr
BTU/hr 91 525 Btu/hr
% 80%
inches ¾" NPT
water 10.5" - 14"
column
water 5.7" - 14"
column
inches ½ " NPT
inches ½ " NPT
GPM (l/ 0.5 (1.9)
min)
PSI (bar) 30 PSI (2.07 bar)
Fibreglass -
reinforced
polyamide (PA)
6 720 644 942 (2014/11)