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Gas Connection Pipe Sizes
(Minimum incoming pipe size should be 1 1/2" (41 mm))
Natural
3/4
" (22 mm)
1" (28 mm) 1 1/4" (36 mm)
Propane 1/2" (15 mm) 3/4" (22 mm) 1" (28 mm)
Manufactured 1" (28 mm) 1 1/4" (36 mm) 1 1/2" (41 mm)
Gas Single Unit 2 - 3 Units
4 or more
units*
* For distances of more than 20 feet (6 m) and/or more
than 4 fittings or elbows, increase the connection by one
pipe size.
The H50 Series has received the CE mark for the countries and gas categories indicated in the table
below. NOTE: The nominal heat input (QN) is 21kW except for AT, DE, LU and category 3P/B,
which is 23kW.
COUNTRIES CATEGORIES GAS PRESSURE (MBAR)
G20 20
AUSTRIA (AT) II2H3B/P
G30, G31 50
I2E(R)B G20, G25 20, 25
BELGIUM (BE)
I3+ G30, G31 28-30, 37
G20 20
DENMARK (DK) II2H3B/P
G30, G31 30
G20, G25 20, 25
II2Esi3+
G30, G31 28-30, 37
G20, G25 20, 25
FRANCE (FR)
II2Esi3P
G31 50
G20 20
FINLAND (FI) II2H3B/P
G30, G31 30
G20, G25 20
II2ELL3B/P
G30, G31 50
GERMANY (DE)
I3P G31 50
G20 20
GREECE (GR) II2H3+
G30, G31 28-30, 37
G20 20
ITALY (IT) II2H3+
G30, G31 28-30, 37
G20 20
IRELAND (IE) II2H3+
G30, G31 28-30, 37
G20 20
LUXEMBOURG (LU) II2E3B/P
G30, G31 50
G25 25
II2L3P
G31 50
G25 25
NETHERLANDS (NL)
II2L3B/P
G30, G31 30
NORWAY (NO) I3B/P G30, G31 30
G20 20
PORTUGAL (PT) II2H3+
G30, G31 28-30, 37
G20 20
II2H3+
G30, G31 28-30, 37
G20 20
SPAIN (ES)
II2H3P
G31 37, 50
G20 20
SWEDEN (SE) II2H3B/P
G30, G31 30
G20 20
UNITED KINGDOM (UK) II2H3+
G30, G31 28-30, 37
CE Standard
Required airflow for the combustion air supply is 2m
3
/h per kW.
CE Approved Gas Categories by Country