Bosch 520-HN -L, Руководство пользователя

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