Application's Manual

Data subject to change without notice | 01.2011 BOSCH THERMOTECHNOLOGY CORPORATION
THERM Tankless Water Heater Applications Manual | 13
7 Outdoor Installation
The models listed below are designed to be installed indoors.
However, they are approved for outdoor installation when installed
with the Outdoor Kit (part# BTOK):
 830 ES
 940 ES/ESO
 C 1050 ES
 C 1210 ES/ESC
Outdoor Kit (BTOK) installation:
 The installation of this outdoor kit (BTOK) is required when
installing any of the above appliances outdoors.
 Outdoor cap easily retrofi ts to these indoor models.
 Exterior water piping should be protected if short term freezing
conditions could exist.
 Not for use in areas routinely exposed to freezing temperatures.
Minimum clearances:
Ref. Description
Min.
distances
A
Directly below or adjacent to
an opening; operable
windows, doors and any fresh
air openings
≥ 1 ft
B
C
D ≥ 1 ft
E
Below a gutter, sanitary
pipework, eaves or overhang
≥ 3 ft
F ≥ 1 ft
G
From a gas meter or gas
regulator
≥ 3 ft
Outdoor Installation Clearances
Above ground
From any adjacent wall
Source: NFPA 54 National Fuel Gas CodeANSI Z223.1
Installation on wood siding
Installation on vinyl siding:
3½΄
≥12" ≥12"
≥12"