Thermann TH17ENB5L, Руководство по установке

Страница: 15 / 28

15
NOTE
• Ensure that the gas pipe size
is correct. If undersized the
appliance will not operate
correctly.
• SERVICE CALLS ARE CHARGEABLE
FOR UNITS WITH INCORRECT PIPE
SIZES OR BLOCKED GAS OR WATER
FILTERS.
Flexible Connectors
Flexible gas pipes are not recommended unless the
minimum inside diameter is ¾ in. or greater and
the rated capacity of the connector is equal to or
greater than the MJ/h demand of the Water Heater.
Reference Tools & Sample Calculations
The tables and samples below are for reference
only. The professional sizing and installing the
gas pipe should always run the appropriate
calculations before all installations.
NOTICE
[Calculation Example]
A partial set of sizing tables are printed on page
17-18.
1. Draw a sketch of a piping system.
Enter the system information.
(e.g.)
Point of
delivery
Outlet 1
clothes dryer
80 MJ/h
Outlet 2
range/oven unit
50 MJ/h
Outlet 4
furnace 100 MJ/h
Outlet 3
water heater
150 MJ/h
2. • Determine the gas type used and supply gas
Pressure, and enter it.
• Determine the piping material and enter it to
the below.
• Select the appropriate pipe sizing table from
page 17-18 and enter it to the below.
Gas type:
Natural
Pressure drop:
0.12 kPa
Table used:
1
Piping material:
Copper
Supply gas pressure:
1.13
(e.g.)
Gas type:
Pressure drop:
Table used:
Piping material:
Supply gas pressure:
(e.g.)
2 m
2 m
4 m
8 m
8 m
4 m 5 m
5 m
2 m
Point of
delivery
Outlet 1
clothes dryer
80 MJ/h
Outlet 2
range/oven unit
50 MJ/h
Outlet 4
furnace 100 MJ/h
Outlet 3
water heater
150 MJ/h
a
e
c b
f
h
g
d
3. • On the sketch, mark the delivery point (meter
or regulator) as “a” and the first tee as “b”. Let
the section “a-b” be the first section.
• Section from the first tee “b” to the second
tee “c” set “b-c” and set the section to the
next tee in the same way.