28
FIELD
POWER
SUPPLY
FIELD
POWER
SUPPLY
CHILLED FLUID
PUMP POWER
FIELD
POWER
SUPPLY
09DPM CONDENSING UNIT
(SINGLE CIRCUIT)
CONTROL
WIRING
09DPM CONDENSING UNIT
(DUAL CIRCUIT)
CONTROL
WIRING
LIQUID LINE
LIQUID LINE
TO
EXPANSION
TANK
FIELD SUPPLIED
SHUTOFF VALVES
STRAINER*
CONTROL
WIRING
CIRCUIT A
HOT GAS
CIRCUIT A
LIQUID
CIRCUIT A
HOT GAS
CIRCUIT A
LIQUID
CIRCUIT B
HOT GAS
CIRCUIT B
LIQUID
FROM ADDITIONAL
AIR HANDLING UNITS
30MPA MANIFOLD
UNITS
PRESSURE
RELIEF VALVE
TO ADDITIONAL
AIR HANDLING UNITS
AIR HANDLING
UNIT
FAN
MOTOR
POWER
ST
FD
*
AIRFLOW THROUGH
AIR HANDLING UNIT
POWER WIRING
CONTROL WIRING
CHILLED FLUID PIPING
FIELD-SUPPLIED
STARTER
FIELD-SUPPLIED
DISCONNECT
FIELD SUPPLIED
MULTI-CHILLER
CONTROLLER
Fig. 27 —Typical Piping and Wiring, Manifold 30MPA Units with Dual Circuit 09DP Remote Air-Cooled
Condenser Shown
NOTES:
1. Chiller must
b
e installed
levelly
to maintain proper compressor oil return (level adjustment kit included with manifold piping kit (option).
2. Wiring and piping shown are general points-of-connection guides only and are not intended for a specific installation. Wiring and piping shown are for a
q
uick overview of system and are
not in accordance with recognized standards.
3. All wiring must comply with applica
b
le local and national codes.
4. All piping must follow standard piping techni
q
ues. Refer to Carrier System Design Manual part 3, Carrier E20-II software Refrigerant Piping program, or appropriate ASHRAE (American
Society of Heating, Refrigerating, and Air-Conditioning Engineers) hand
b
ook for details on proper piping sizes and design.
5. See product data for minimum system fluid volume. This system may re
q
uire the addition of a holding tank to ensure ade
q
uate volume.
6. Hot gas lines should rise a
b
ove refrigerant level in condenser circuit. With 30MPA/09DP matched condensers, this is accomplished internally in the 09DP unit. Dou
b
le riser may
b
e
re
q
uired; Check 30MPA line sizing chart.
7. Trap should
b
e installed on hot gas lines to prevent condenser oil and refrigerant vapor migration from accumulating in the compressor during off cycle.
8. Pitch all horizontal lines downward in the direction of refrigerant flow.
9. For piping lengths greater than 50 ft (15 m), provide support to li
q
uid and gas lines near the connections to the condenser coil.
10. For pressure relief re
q
uirements, see latest revision of ASHRAE Standard 15, Safety Code for Mechanical Refrigeration.
11. Operating environment — Chiller should
b
e installed in an indoor environment where the am
b
ient temperature is
b
etween 40 to 104°F (4 to 40°C) with a relative humidity (non-condensing)
of 95% or less. To ensure that electrical components operate properly, do not locate the chiller in an area exposed to dust, dirt, corrosive fumes, or excessive heat and humidity.
12. Inverted trap re
q
uired at condenser for 09DPM065-130.
