Installation At High Altitudes; Electrical Supply Connections; Connecting Power Supply - Buderus LOGANO PLUS GB312 Installation Instructions Manual

DANGER: System damage
due to short-circuits.
▶ Cover the areas at risk before carrying out the leakage
test.
▶ Do not spray leak detector onto cable conduits, plugs
or electrical connecting leads or allow it to drip onto
them.
Gas pipe delivery rate in cubic feet of gas per hour
Length of
pipe in feet 1" 1¼ "
10 520 1060
20 350 730
30 285 590
40 245 500
50 215 440
75 175 360
100 160 305
150 120 250
Table 12 Gas pipe delivery rate
1) Maximum gas pipe delivery rate in cu ft/hr based on a gas specific gravity of 0.60
and a gas pressure of 0.5 psi or less and a pressure drop equivalent to a water
column of 0.3 inches.
Iron pipe Equivalent lengths for pipe fittings in feet
nominal
diameter (in
90° elbow
inches)
Equivalent lengths in feet
1 3
1¼ 4
1½ 5
2 7
2½ 8
Table 13 Equivalent lengths for pipe fittings
Disconnect the boiler and its gas isolating valve form the gas supply pipe
system if that system is subjected to pressure tests in which the testing
pressure exceeds ½ psi.
If the gas supply piping system is subjected to pressure tests in which
the testing pressure is ½ psi or less, it is sufficient to isolate the boiler
from the gas supply piping system by closing the relevant isolating valve.
▶ Test the boiler and gas supply connections for leaks before
commissioning ( page 33).
Use only sealant that is resistant to corrosion by LPG for the pipe
connections. The sealant must be applied sparingly to the external
thread of the pipe connections.
Logano plus GB312 – 6 720 647 367 (2012/11)
1½ " 2" 2½ "
1600 3050 4800
1100 2100 3300
890 1650 2700
760 1450 2300
670 1270 2000
545 1020 1650
480 870 1400
380 710 1130
Type of pipe fitting
T-piece Shutoff Gas
valve shut-off
valve
5 0.6 1.60
6 0.8 2.15
7 1.0 2.50
10 1.3 3.00
12 1.6 3.50

6.11.2 Installation at high altitudes

The boiler is designed for installation at altitudes below 2000 feet above
sea level. If it is to be installed at altitudes higher than 2000 feet it can be
adjusted accordingly. Refer to sections 7.11 to 7.14 for CO
adjustment.
Contact Buderus if the installation site is at a high
altitude. The boiler must only be adjusted as specified in
the relevant technical documentation and using the
adjusting procedure approved by Buderus.
1)

6.12 Electrical supply connections

The electrical connections to the boiler must conform to the locally
applicable regulations and the relevant requirements of the National
Electrical Code, ANSI/NFPA-70 or Canadian Electrical Code CSA C22.1
Part 1. The boiler must be grounded in accordance with the regulations
of the relevant authorities or else the requirements of the National
Electrical Code, ANSI/NFPA-70 or Canadian Electrical Code CSA C22.1
Part 1. The boiler is fully functional with the factory-installed
programming unit.
Observe the following points regarding the electrical
connections:
▶ Only carry out electrical work on the heating system if
you are properly qualified for the work in question. If
you do not have the proper qualifications, have the
work done by a licensed electrician.
▶ Observe all local regulations!

6.12.1 Connecting power supply

Establish a permanent connection to the main power supply in
accordance with the locally applicable regulations.
▶ Fit a power switch near to the boiler.
Fig. 31 On-off switch
▶ Feed the power cable through the hole in the rear panel of the boiler
and along the cable conduit provided to the control unit.
6
Installing the boiler
2
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