CleaverBrooks CFC ClearFire User Manual

Figure B5-38. Two-Pipe Primary/Secondary Piping
Boiler
Heating Load
A
Heating Load
B
Heating Load
C
1
BOILER OUTLET (SUPPLY)
2
BOILER INLET (RETURN)
3
SECONDARY CONNECTION
4
ISOLATION VALVES
5
PURGE COCKS
6
AIR SEPARATOR WITH AUTOMATIC AIR VENT
7
DIAPHRAGM EXPANSION TANK WITH FILL VALVE
8
BALANCING VALVES (SQUARE HEAD COCKS)
9
SYSTEM CIRCULATOR
10
SECONDARY CIRCULATORS INJECTION PUMP
11
FLOW/CHECK VALVES (TO PREVENT GRAVITY
10
11
8
10
5
8
8
3
5
10
3
11
10
5
8
3
5
1
2
6
9
4
7
(FIXED OR VARIABLE SPEED)
OR PRESSURE-DROP-INDUCED FLOW IN
SECONDAY CIRCUITS)
4
12" MAX APART AT ALL SECONDARY CONNECTIONS
TO PREVENT FORCED FLOW IN SECONDARY
CAUSED BY PRESSURE DROP THROUGH PIPING
BETWEEN CONNECTIONS
TEMPERATURE CONTROL BY SECONDARY
CIRCULATION ONLY
TEMPERATURE CONTROL USING MIXING
VALVE
TEMPERATURE/HEAT INPUT CONTROL
USING INJECTION PUMPING
A
B
C
4

CleaverBrooks CFC ClearFire Specifications

General

Brand	CleaverBrooks
Model	CFC ClearFire
Category	Boiler
Language	English