27
Harsco Industrial, Patterson-Kelley Technical Service 1.877.728.5351
OP
era
TION
Gas Fired Boiler
26
Harsco Industrial, Patterson-Kelley Technical Service 1.877.728.5351
INST
alla
TION
Gas Fired Boiler
To adjust high fire:
Required Tools: Flat head screwdriver and Combustion
analyzer
Start the boiler and observe proper operating parameters for
the system. Set boiler to the “
BNR ON TEST HI
”, as described
above, to achieve maximum firing rate of the boiler. Check
combustion readings using the combustion analyzer. If
combustion readings are not in accordance with
Table 3.11.2
,
adjust as follows: Open the front panel of the boiler. Locate
the automatic gas valve. Turn the orifice adjusting screw,
located on the downstream side of the valve, in the direction
indicated on the sticker to increase or decrease the gas flow.
Increasing the gas flow decreases the combustion exhaust
O
2
, while decreasing the gas flow increases the combustion
exhaust
O
2
. There will be a slight time delay between the
adjustment and the response of the
CO
2
/O
2
measuring
instrument. Adjust the settings in small increments and allow
the combustion readings to stabilize before readjusting.
When desired adjustments are complete, check and adjust
low fire if necessary.
To adjust low fire:
Required Tools: 2.5 mm hex wrench and Combustion
analyzer
Start the boiler and observe proper operating parameters
for the system. Set boiler to the “
BNR ON TEST LOW
" as
described above, to achieve minimum firing rate of the
boiler. Check combustion readings using the combustion
analyzer. If combustion readings are not in accordance with
Table 3.11.2
, adjust as follows: Open the front panel of the
boiler. Locate the automatic gas valve. Turn the offset screw,
located in the bottom center of the side of the valve, in the
direction indicated on the label to increase or decrease the
gas. Increasing the gas decreases the
O
2
, while decreasing
the gas increases the
O
2
. There will be a slight time delay
between the adjustment and the response of the
CO
2
/O
2
measuring instrument. Adjust the settings in small increments
and allow the combustion readings to stabilize before
readjusting. When desired adjustments are complete, check
and adjust hi fire if necessary.
3.11.3 Checking Flame signal
Using the control panel, enter the information mode and scroll down view the flame signal. This shows μA when
the boiler is firing and shows 0μA when the boiler is not firing. 7-8μA is a strong flame signal.
If overheating occurs or the gas
supply fails to shut off, do not turn
off or disconnect the electrical
supply to the pump. Instead, shut
off the gas supply at a location
external to the boiler.
4 o
peraTIon
Do not use this boiler if any part
has been under water. Immediately
call a qualified service technician
to inspect the boiler and to replace
any part of the control system and
any gas control which has been
under water.
!
WARNING
!
WARNING
4.1.1 Control Panel Front
Become familiar with the
basic operation of the boiler.
The interior of the front door
shows the boiler Operating
Instructions.
4.1.2 Factory tests
Safe lighting and other
performance criteria were met
with the gas manifold and
control assembly provided
on this boiler when the boiler
underwent factory tests
specified in
ANSI Z21.13/CSA
4.9
, latest edition. (See "Factory
Firetest" label.)
4.1 g
eneral
4.2.1 lighting Procedures
1. Make sure the system is filled with water and water is circulating in the system.
Turn on electrical supply and open the gas supply valves to the boiler.
2. Turn the on/off switch to the on position. If an error is indicated, see Section
5.5 of this manual to troubleshoot the problem and take the necessary corrective
action before proceeding.
3. Set the desired high temperature limit and operating temperature. The
controller will now complete the automatic firing sequence.
4.2.2 Normal shut Down Procedures
1. Close all manual gas valves.
2. Turn off electric power.
4.2 n
orMal
l
IghTIng
and
s
huT
-d
oWn
p
roCedures
n
oTICe
!
The heat exchanger is constructed
and stamped for 160 psig
maximum operating pressure and
210ºF maximum temperature.
In case of emergency, shut off gas at a valve external to the boiler. See
diagram at right for valve locations.
4.3 e
MergenCy
s
huT
o
ff
4.4 T
ypICal
b
oIler
o
peraTIng
C
ondITIons
model
Number
Input Rating
(Btu/hr)
Voltage
(three phase)
total
Amperage
Gas Flow Rate (CFh)
Natural
Gas
(1030 Btu/ft^3)
lP Gas
(2500 Btu/ft^3)
Output
Capacity
(Btu/hr)
SC-3000
3,000,000
208-240
Less than 20
2913
1200
2,880,000
440-480
Less than 20
SC-4000
4,000,000
208-240
Less than 20
3689
1520
3,840,000
440-480
Less than 20
Figure 3.11.2
Figure 4.1.1
Table 4.4
Figure 4.3