SERIES 8800 & 8900 INSTALLATION AND OPERATING INSTRUCTIONS
Page 13
Figure 8 - Typical Primary/Secondary Piping System
(See Notes)
Figure 9 - Low Temperature Piping
(See Notes and Adjustment Procedures)
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
Valve
Pump
Motorized Valve
Solenoid
Ball Valve
Bufferfly Valve
Angle Valve
Gate Valve
Globe Valve
Balance Valve
Backflow-
Prevention
Device
3-Way Valve
Expansion
Tank
H-1 Rev 4
H-3 Rev 6
NOTES:
1. Boiler circuit piping must be sized
large enough to handle maximum
flow through unit.
2. Boiler pump sized to boiler design
flow 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 configuration and valving.
Check with local codes and ordinances for
specific requirements.
NOTES:
1. Boiler circuit piping must be sized large enough to
handle maximum flow through unit.
2. Boiler pump sized to boiler design flow 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
configuration and valving.
Check with local codes and ordinances for specific
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
final adjustments.
5. Follow same adjustment procedure for
sealed combustion.
