Vinotemp WINE-MATE VINO2500SSD Manuel utilisateur

VINO2500-8500SSD

Installer’s Instruction

Federal law requires that WINE-MATE split cooling systems be

installed by an EPA certified refrigeration technician.

WINE-MATE split system is shipped as components and is ready for use only

after a certified refrigeration technician has properly installed, evacuated,

charged and tested the system. Proper installation is critical. Vinotemp can only

warrant the quality of the components. The installation and proper operation of

the system must be warranted by the installer. Installation of the system must be

done in accordance with all state and local building and electrical codes.

The condensing unit and evaporator unit are connected by a liquid line and an

insulated suction line that are supplied by the installer. These lines must be

properly sized for the distance between the two units. After the units and the lines

are installed, the system must be pressure tested. If no leaks are found,

evacuate and charge system. Refrigerant amount will vary depending on the

length of line set.

1. Condensing Unit

•Place the condensing units WM250-850SCU in a

properly ventilated location. If it is not, heat

exhausted by the condensing unit will build up and

the cooling system will not operate properly.

•Condensing unit shall be elevated to avoid possible

flooding and shaded from direct sun. It shall not be exposed to

temperatures higher than 110 °F or lower than 50 °F (optional low ambient

kit available).

•Leave minimum 5 feet clearance for the exhaust side and leave minimum

1 foot clearance for the fresh air intake side.

- 1 -

CAUTION:

DO NOT SWITCH ON THE COMPRESSOR IF THE CONDENSING UNIT IS

EQUIPPED WITH A LOW AMBIENT CONDITION KIT UNTIL THE UNIT HAS

BEEN PLUGGED IN FOR 24 HOURS.

2. Valve Operation (Condensing unit)

BACK POSITION FRONT POSITION MIDDLE POSITION

Fig. 5 ROTALOCK Valve Operation

BACK POSITION FRONT POSITION MIDDLE POSITION

Fig. 6 Base Valve Operation

1 – Process & Manometer; 2 – Receiver/Compressor Suction

3 – Liquid/Suction Line; 4 – Pressure Control

Back Position: Process and manometer port closed for normal operation

Front Position: Connection to liquid or suction line closed

Middle Position: All ports open for evacuation, charge and manometer reading

3. Evaporator Unit

•The WM25-85SFCD evaporator units shall be installed for ceiling mount

with air supply on both sides and air return on the bottom.

•Supply and return air flow from the evaporator unit shall be unobstructed

for at least 1 foot.

- 2 -

•There is a gravity drain line and the unit shall be installed level or with a

slight angle toward the drain connection. If rise-up is needed, a

condensation pump must be used.

4. Air Sensor

•The air sensor can be located in the wine room 5 ft above the floor or the

return air area, but not the supply air area or air dead area.

•If the temperature controller is mounted outside the wine room but the air

sensor is located inside the wine room, use 18 gauge wires to extend the

air sensor if needed.

5. Refrigeration Piping, Evacuating, Charging and Starting

CAUTION:

•ALWAYS USE THE SUPERHEAT AND SUBCOOLING, PRESSURE

READINGS TO CHARGE REFRIGERANT PROPERLY, THE LISTED

CHARGES ARE FOR REFERENCE ONLY.

•CHARGE 15% MORE REFRIGERANT IN THE SUMMER IF THE UNIT IS

EQUIPPED WITH A LOW AMBIENT CONDITION KIT.

•The installation order starts from condensing unit (including the receiver,

discharge valve), liquid line filter-drier, moisture-liquid indicator/sight glass,

liquid line, to evaporator unit (including liquid line connection, solenoid

valve, expansion valve, and suction line connection), returning to insulated

suction line, suction valve and then condensing unit.

•Use inverted siphons to prevent liquid from flooding back to the

compressor and aid oil returning to the compressor.

•Charge the system after pipe brazing, leak testing and evacuating.

•The subcooling at the condensing unit shall be around 10°F. The charge

may be complete when there are no more bubbles forming in the sight

glass.

•If equipped with an AXV, the valve is set around 35-40°F at factory and

the superheat at the evaporator unit shall be around 9-

18°F under low – high load at 75°F ambient temperature.

•If the superheat is high, check the subcooling first to

know if the refrigerant charge is sufficient. If the charge

is not sufficient, add more refrigerant. If the charge is

good, then increase the evaporator suction pressure by

turning the hex nut (5/16”) clockwise.

•If the superheat is low, then decrease the evaporator

suction pressure by turning the hex nut (5/16”) counter-

clockwise.

•The temperature split crossing the evaporator shall be 8-10°F at 55°F

wine room temperature.

- 3 -

•Suction pressure: 30-35 psig

•Head pressure: 125-150 psig at 70 -90 °F ambient temperatures

The line sizes and refrigerant charges are listed as follows.

MODEL REFRIGERATION

LINES LIQUID

LINE SUCTION

LINE DRAIN

LINE CHARGE

VINO-

2500SSD <= 50 FT ¼” OD 3/8” OD ½” OD R134a/

19 OZ

VINO-

4500SSD <= 50 FT ¼” OD ½” OD ½” OD R134a/

26 OZ

VINO-

6500SSD <= 50 FT ¼” OD ½” OD ½” OD R134a/

32 OZ

VINO-

8500SSD <= 50 FT 3/8”

OD 5/8” OD ½” OD R134a/

40 OZ

NOTES:

•THE VALVE CONNECTION SIZES OF CONDENSING UNIT AND THE LINE

CONNECTION SIZES OF EVAPORATOR UNIT MAY NOT NECESSARY

THE SAME AS THE ABOVE LISTED LINE SIZES.

•IF THE CONDENSING UNIT IS INSTALLED ABOVE THE EVAPORATOR

UNIT, USE THE SUCTION LINE ONE LISTED SIZE SMALLER.

•EXPANSION AND SOLENOID VALVES ARE INSTALLED ON LIQUID LINE.

6. Pressure, Superheat and Subcooling Readings

CAUTION:

THE VALVES MUST BE IN THE MIDDLE POSITIONS TO READ PROPERLY.

Complaint Possible Causes

a. High suction pressure and low head pressure

b. High suction pressure and low head pressure

Low superheat and low subcooling

c. High suction pressure and high head pressure

Low superheat and high subcooling

d. High to normal suction pressure and high head pressure

Low subcooling

e. High suction pressure and high head pressure

Low subcooling

f. High suction pressure and high head pressure

High superheat

g. Low suction pressure and low head pressure

High superheat and low subcooling

h. Low suction pressure and low to normal head pressure

High superheat and high subcooling

i. Low suction pressure and low head pressure

Low subcooling

j. Low suction pressure and low head pressure

Low superheat and low subcooling

k. Low suction pressure and low to normal head pressure

a. Compressor may be bad

b. Expansion valve opened, too

much oil

c. Overcharge

d. Non-condensable gas

e. Air restricted, dirty condenser,

bad condenser fans

f. High room temperature, high

evaporator load

g. Undercharge

h. Liquid line restricted after

receiver, solenoid valve

restricted

i. Suction line restricted

j. Air restricted at evaporator,

evaporator iced

k. Evaporator restricted

- 4 -

High superheat and normal to high subcooling

l. Low suction pressure and normal head pressure

High superheat and normal subcooling

m. Low suction pressure and high head pressure

High superheat and high subcooling

n. Low suction pressure and high head pressure

High superheat and high subcooling

o. low to normal suction pressure and high head pressure

High to normal superheat and high subcooling

l. Expansion valve restricted

m. Both evaporator and condenser

restricted

n. Liquid line restricted before

receiver

o. Condenser restricted

7. Use of the adjustable pressure control (if applicable for pump-down)

Suction pressure setting: Cut out=5 psig; Cut in=25 psig; Differential=20 psig

Head pressure setting: Cut out=230 psig; Cut in=150 psig; Differential=80 psig

It may need to adjust the setting in the field to get the right cycle time.

A. Dual Control

Fig. 7 Single Adjustable Pressure Control

- 5 -

B. Dual Control

Fig. 8 Dual Adjustable Pressure Control

8. Use of the encapsulated pressure control (if applicable)

Fixed suction pressure setting: Cut in = 32 psig; Cut out = 10 psig

9. Use of the condenser fan control (if applicable for low ambient kit)

Head pressure setting: Cut in=170 psig; Cut out=120 psig; Differential=50 psig

It may need to adjust the setting in the field to prevent short fan cycle.

10.Use of the crankcase heater (if applicable for low ambient kit)

The crankcase heater is installed around the lower part of the compressor and

shall be turned on all the time. The heater is self-regulated.

CAUTION:

TURN OFF THE COMPRESSOR SWITCH BEFORE POWER THE

CONDENSING UNIT. ONLY TURN ON THE COMPRESSOR AFTER THE

UNIT HAS BEEN POWERED FOR 24 HOURS.

- 6 -

11.Condensing Unit Troubleshooting

Unit not running

a. Incorrect power supply

b. Incorrect or loose wirings

c. Failed components

d. Liquid refrigerant in the compressor

e. Low pressure switch shutting down the unit

a. Check for proper voltage

b. Check all wirings and connections

c. Check start relay, start capacitor, overload

protector, compressor.

d. Call service for OEM information

e. Check for system restriction or low

refrigerant

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