Page 26
FIGURE 28
REFRIGERANT ROUTING - HEATING OPERATION
3, 5, AND 10 TON UNITS
REFRIGERANT
WATER
WATER TO
REFRIGERANT COIL
CROSS SECTION
WATER
REFRIGERANT
COMPRESSOR
FROM INDOOR
COIL
TO INDOOR
COIL
FILTER / DRIER
REVERSING
VALVE
EXPANSION
VALVE
WATER TO
REFRIGERANT COIL*
STRAINER*
AUTOMATIC
FLOW
REGULATOR
CHARGE
COMPENSATOR
WATER FLOW
CONTROL VALVE
(ON/OFF)
WATER
IN
WATER
OUT
BYPASS
CIRCUIT
THREE-WAY
VALVES*
*10-ton units only: one in each unit; other
components are one in each circuit.
FIGURE 29
REFRIGERANT ROUTING - HEATING OPERATION
20 TON UNITS
REFRIGERANT
WATER
WATER TO
REFRIGERANT COIL
CROSS SECTION
WATER
REFRIGERANT
COMPRESSOR
FROM INDOOR
COIL
TO INDOOR
COIL
FILTER / DRIER
REVERSING
VALVE
EXPANSION
VALVE
WATER TO
REFRIGERANT COIL*
STRAINER*
AUTOMATIC
FLOW
REGULATOR
CHARGE
COMPENSATOR
WATER FLOW
CONTROL VALVE
(ON/OFF)
WATER
IN
THREE-WAY
VALVES*
WATER
OUT
BYPASS
CIRCUIT
*One in each unit; other compo
nents are one in each circuit.