Laars pennant PNCH Installation And Operation Instructions Manual page 15

Low Temperature Pennant
System
Return
PRIMARY/SECONDARY MANDATORY FOR ALL
VARIABLE FLOW SYSTEMS.
INSTALL AIR VENTS AT HIGH POINTS IN SYSTEM.
PIPING & SIZING OF EXPANSION TANK
PER TANK MANUFACTURER'S INSTRUCTIONS.
COMMON PIPING MUST BE SIZED FOR
COMBINED FLOW OF ALL BOILERS.
BOILER WATER CONNECTIONS (INLET/OUTLET)
MAY VARY. VERIFY CONNECTION ORIENTATION.
BOILER CIRCUIT PIPING MUST BE EQUAL
BOILER WATER CONNECTION SIZE.
BOILER CIRC. PUMP SIZED FOR FLOW
THROUGH BOILER AND 30 FEET OF
FULL-SIZED PIPING.
DIMENSION "C" TO BE 4 PIPE DIAMETERS.
MINIMUM INLET WATER TEMP = 70°F
DOTTED DEVICES INDICATE ALTERNATE
LOCATIONS.
TEMPERATURE SENSORS REQUIRE FIELD
INTERLOCK TO BOILER CONTROLS.
THERMOMETER
TEMPERATURE
SENSOR
Figure 4. Suggested Piping - Hydronic Boiler.
System
Return
PRIMARY/SECONDARY MANDATORY FOR ALL
VARIABLE FLOW SYSTEMS.
INSTALL AIR VENTS AT HIGH POINTS IN SYSTEM.
PIPING & SIZING OF EXPANSION TANK
PER TANK MANUFACTURER'S INSTRUCTIONS.
COMMON PIPING MUST BE SIZED FOR
COMBINED FLOW OF ALL BOILERS.
BOILER WATER CONNECTIONS (INLET/OUTLET)
MAY VARY. VERIFY CONNECTION ORIENTATION.
BOILER CIRCUIT PIPING MUST BE EQUAL
BOILER WATER CONNECTION SIZE.
BOILER CIRC. PUMP SIZED FOR FLOW THROUGH
BOILER AND 30 FEET OF FULL-SIZED PIPING.
DIMENSION "C" TO BE 4 PIPE DIAMETERS.
MINIMUM INLET WATER TEMP = 70°F
DOTTED DEVICES INDICATE ALTERNATE
LOCATIONS.
TEMPERATURE SENSORS REQUIRE FIELD
INTERLOCK TO BOILER CONTROLS.
THERMOMETER
GLOBE VALVE
TEMPERATURE
CHECK VALVE
SENSOR
Figure 5. Hydronic Piping — One Boiler, Multi-Temperature System.
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND VALVING, CHECK
WITH LOCAL CODES AND ORDINANCES FOR
ADDITIONAL REQUIREMENTS.
C
PRESSURE REDUCING VALVE
GLOBE VALVE
W/ FAST FILL BYPASS
PURGE
CHECK VALVE
VALVE
PRESSURE REDUCING VALVE
W/ FAST FILL BYPASS
PURGE
VALVE
C
LEGEND
3-WAY VALVE
VALVE
WARNING: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND VALVING, CHECK
WITH LOCAL CODES AND ORDINANCES FOR
ADDITIONAL REQUIREMENTS.
C
LEGEND
3-WAY VALVE
VALVE
System
Pump
System
Supply
Cold Water
Make-Up
3-Way Valve
Mounted on Pennant
Pump Mounted
on Pennant
EXPANSION TANK
WITH AIR SCOOP AND
AUTO AIR VENT
System
Pump
Cold Water
Make-Up
3-Way Valve
Mounted on Pennant
Pump Mounted
on Pennant
EXPANSION TANK
WITH AIR SCOOP AND
AUTO AIR VENT
Page 15
PUMP
System
Supply
PUMP