Patterson-Kelley Thermific, Инструкция по установке и эксплуатации

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Thermific
®
Gas-Fired Boiler Installation
Page 13
3.8.4 Flushing and Filling
Flushing the System
Before filling the boiler, flush the system to remove
the debris. Clean and flush old piping thoroughly be-
fore installing the boiler.
Under no circumstances should the hydronic system be
flushed while the boiler is attached to the system since
the debris or corrosion products could accumulate in
the boiler and plug the boiler heat exchanger.
If the piping system attached to this unit will be
chemically cleaned, the boiler must be disconnected
from the system and a bypass installed so that the
chemical cleaning solution does not circulate through
the boiler.
Filling
To be sure that the boiler is not air-bound, open the
pressure-relief valve located at the rear of the boiler.
Leave the relief valve open until a steady flow of wa-
ter is observed. Close the valve and finish filling the
system.
3.9 B
URNER AND
I
GNITION
S
YSTEM
3.9.1 Inspection
Inspect the burners to be sure nothing was damaged or
knocked loose during shipment. Make sure that the
mixer core in the top of the burner is centered in the
burner head; (see burner photo in section on "Cleaning
the Burner" Section 5.2). Inspect the pilot line, main
gas train and ignition electrode to be sure they were
not damaged during shipment or installation. Check to
see that the pilot is securely attached and that it is
properly positioned to ignite the main burner.
3.10 P
RE
-S
TART
C
HECK
L
IST
Before attempting to start the boiler, make sure the
following items have been completed.
1. Flue gas from the boiler is properly vented.
2. Gas connection has been made, pressure tested for
leakage, and the line purged of air. Make sure all
required bleeds and vents have been installed.
3. Water connections are complete, and the boiler
and system have been filled and purged of air.
4. The boiler is connected to a 120 volt power source
with a disconnect having adequate overload pro-
tection.
5. Combustion air openings are not obstructed in any
way and have adequate capacity.
6. The boiler is placed the proper distance from any
combustible walls, in accordance Section 3.3.3.
7. Relief valves have been piped to floor drains.
3.11 S
AFETY
C
HECKS
The following checks of safety systems must be made
before putting the boiler into normal operation.
Before firing the boiler refer to Sections 4.1 and 4.2
for information on the use of the controls, lighting, and
shut-down procedures.
WARNING!
Never attempt to operate a boiler that has failed to
pass all the safety checks described below.
WARNING!
After checking controls by manual adjustment, make
sure they are always reset to their proper settings.
3.11.1 Test of Ignition Safety System
Test the ignition system safety shutoff as follows:
1. Disconnect wire #26 (On/Off) or # 17 (Lo-Hi-Lo)
at the terminal block.
2. With the main gas cock (manual gas valve) open
and the pilot gas cock open, the burner should be
cycled on. After all the safety limits on gas pres-