Lochinvar HERALD HCB116CE, Installation Manual, Page: 44 / 92

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14.0 SCHEMATICS
14.1 KEY FOR SCHEMATICS
Lochinvar limited may provide technical advice and guidance to assist with best practice,
optimisation and installation of Lochinvar products; however, we will not be liable for any
duties as designers under construction (design and management regulations 2015). In all
cases where information is provided, the customer must assess and manage risks associated
with the technical information and advice provided.
SYMBOL DESCRIPTION
IV ISOLATION VALVE
LSV LOCKSHIELD VALVE
TD TUNDISH
EXV EXPANSION VESSELQ
EV EXPANSION VALVE
PRV PRESSURE REDUCING VALVE
NRV NON RETURN VALVE
PCP PRIMARY CIRCULATING PUMP
TS TEMPERATURE SENSOR (VESSEL SENSOR)
ZS ZONE SENSOR
HP HEATING PUMP
AAV AUTOMATIC AIR VENT
RLY RELAY
LVH LOW VELOCITY HEADER
DCV DOUBLE CHECK VALVE
AS AIR SEPARATOR
DS DIRT SEPARATOR
TFL TEMP FILL LOOP