SECTION 6 – OPERATION
FORM 155.32-ICOM2.EN.UL
ISSUE DATE:1/10/2018
120
JOHNSON CONTROLS
Figure 58 -
Changeover Valve Locations for Chillers with Additional Heat Exchanger Heating
Table 34 -
Changeover Valve Operation for
Chillers with Additional Heat Exchanger Heating
OPERATION
MODE
Cooling / Heating Changeover Valve Setting
SOL. / REF. PUMP OPERATION
Changeover
Valve
LG ->C Ref
Return
HG Sol
Supply
HG Sol
Return
HG Sol
Supply
LG->C Gas
Vent
HG -> Ref
Return
SP1
SP2
RP
Cooling
O
O
O
O
O
ON
ON
ON
OPERATION
MODE
Cooling / Heating Changeover Valve Setting
SOL. / REF. PUMP OPERATION
Changeover
Valve
LG ->C Ref
Return
HG Sol
Supply
HG Sol
Return
LG->C
Gas Vent
LG-> HG
Ref Return
HG -> Ref
Return
SP1
SP2
RP
Heating
O
O
OFF
OFF
OFF
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