EXA + WATER-HEATER PAC-S HYDRAULIC CIRCUIT
VS
B
BOILER
LEGEND
B
CiB Water-heater circulating pump
CiR Heating circulating pump
R
R
VR
CiR
S
VE
Burner
Radiator
VS
CiB
WATER-HEATER
WASTE
S
Gate valve
VE Expansion tank
VR Non-return valve
VS Safety valve
23
TAP FOR
USE
WATER MAIN
SUPPLY
Fig. 12