Instruction manual

Fi d b b il & h B il M l
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nne
d
co
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er tu
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e gas
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o
il
ers
&
water
h
eaters –
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anua
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16
F
F
H-1 Rev 4
NOTES:
1. Boiler circuit piping must be sized
large enough to handle maximum
 ow through unit.
2. Boiler pump sized to boiler design
 ow requirements.
3. All boilers furnished with factory
mounted outlet water temperature
gauge.
4. Boiler pump purging required.
Use terminals supplied.
Notice: These drawings show suggested
piping con guration and valving.
Check with local codes and ordinances for
speci c requirements.
Adjustment Procedure To Maintain Inlet Temperature
Above Dew Point
T1-Temp-Min=110°F For Atmospheric
T1-Temp-Min=125°F Sealed Combusion
1. Turn heater on and open valves A & B.
2. After steady-state operation, if T1 is less than Temp-Min
slowly close valve B until T1 climbs to desired operating
temperature above Temp-Min.
3. If T1 is greater than desired operating temperature, slowly
close valve A to adjust to lower desired temperature above
Temp-Min.
4. Check after system operating temperature has stabilized.
Make  nal adjustments.
5. Follow same adjustment procedure for sealed combustion.
H-3 Rev 6
NOTES:
1. Boiler circuit piping must be sized large enough to handle
maximum  ow through unit.
2. Boiler pump sized to boiler design  ow requirements.
3. All boilers furnished with factory mounted outlet water
temperature gauge.
4. Boiler pump purging required. Use terminals supplied.
Notice: These drawings show suggested piping con guration and valving.
Check with local codes and ordinances for speci c requirements.
Operated Valve
Air Vent
Pressure Switch
Aquastat Union
Gas Pressure
Regulator
Automatic
Thermometer
Flow Switch
Pressure
Relief Valve
Reducing Valve
Self-Operated
Check Valve
Pressure
Va lve
Pump
Motorized Valve
Solenoid
Ball Valve
Bufferfly Valve
Angle Valve
Gate Valve
Globe Valve
Balance Valve
Backflow-
Prevention
Device
Expansion
Tank
Figure 11 Typical primary/secondary piping system
(See notes)
Figure 12 Low temperature piping
(See notes and adjustment procedures)