Williams Ref WRE-460 Installation Manual

OPERATING INSTRUCTIONS

WHU
Housed Condensing Units

Please read the Operating Instructions before using the equipment.

Williams Housed Units (WHUs) eliminate the need to buy condensing units and housing
separately. Designed for all types of outdoor installation, WHUs with full weatherproof and durable­housing for a neat and tidy appearance.

OLD EQUIPMENT

Please ensure the old / redundant refrigeration equipment are disposed of safely and legally.

TRANSPORTATION AND UNPACKING

We would recommend that the WHU is transported to site in its original packaging. When required, remove
all external and interior packing and accessories, please ensure all packaging is disposed of safely.

The box containing the unit or the unit should not be tilted more than 45° when transporting.

INSTALLATION

Installation and maintenance of the units should only be carried out by trained and qualified personnel.
All electrical wiring and connections must comply with local standards.

Whatever the type of installation is chosen, please ensure that the following installation guidelines are
adhered to:

- A minimum clearance of 300mm (12”) for air intake for the air inlets.

- The rear of the condensing unit can be positioned flush to the wall with 1270mm (50”) clearance for
air discharge.

- The location selected for unit installation must be able to support the weight of the unit in its full
operating configuration.

- Locate the unit a sufficient distance (horizontally) from any heat sources to prevent the exhaust
gases from affecting the operation or life of the unit.

- The unit must be located outdoors and cannot be connected to ductwork.

- If the unit is to be installed on or close to the ground, make sure that the location is not liable for
flooding or heavy snow.

- Locate the unit so roof run-off water does not pour directly onto the unit. Provide guttering or other
shielding at roof level.

- Please ensure that the surrounding atmosphere does not contain noxious or dangerous substances
or the location is in an explosive environment.

- Ensure the installation is carried according to the local rules and regulations concerning the
installation of remote condensing equipment including noise levels.

- Avoid installation where the unit will be in direct sunlilght as this will increase the condensing
pressured and reduce unit efficiency. Install units facing North wherever possible.

- Secure units firmly to prevent overturning by earthquakes or gusts of wind. In particularly windy
locations installation should ensure that the prevailing wind does not interfere with air discharge from
the unit.

- Where applicable ensure outdoor unit legs are anchored using bolts.

- The length of refrigerant piping and wiring should be as short as possible to avoid capacity losses
and increased operating costs.

The centre of gravity of the unit is off-centre, therefore caution is necessary when lifting the unit into
position.

R134A Units R404A Unts R22/404A Units

Operating WHU4440Y WHU4452Y WHU4461Y WHU4492Y WHU4511Y WHU4518Y WHU4525Y WHU2428Z WHU2446Z WHU2464Z WHU2480Z WHU2511Z WHU2516Z WHU4519Z WHU4524Z WHU4531Z WHU4540Z

Temp C^ WATTS WATTS WATTS WATTS WATTS WATTS WATTS WATTS WATTS WATTS WATTS WATTS WATTS WATTS WATTS WATTS WATTS

-40 280 460 520 900 1150 1900

-35 410 660 840 1250 1700 2650

-30 530 870 1140 1670 2250 3500

-25 740 1100 1510 2510 2840 4500

-20 820 1300 1840 2590 3500 5400

-15 450 550 710 980 1400 1950 2150 980 130 2240 3090 4200 6400 2150 2450 3650 4150

-10 550 700 870 1200 1690 2250 2750 1160 1800 2670 3600 5000 7500 2650 3050 4350 5000

-5 700 850 1000 1400 1900 3050 3500 3190 3700 5200 6100

0 850 1000 1250 1720 2260 3700 4200 3750 4375 6180 7400

5 990 1200 1400 1900 2500 4200 5200 4390 5170 7280 8810

10 1150 1450 1750 2590 3100 5500 6100 5050 6240 8270 10065

15 1400 1700 2000 2750 3400 6050 7000 5750 6600 9150 11200

SINGLE SINGLE SINGLE SINGLE SINGLE*SINGLE* THREE SINGLE SINGLE SINGLE*THREE THREE THREE THREE THREE THREE THREE

HP 1/3 3/8 1/2 3/4 1 1.5 2 1/2 3/4 1.5 2 2.5 4 1.5 2 2.5 3

Weight kg 37 48 48 66.5 67.5 78.5 80 49.5 67.5 67.5 82 78.5 120 70 66 tba tba

Liquid 1/4 1/4 1/4 3/8 3/8 3/8 3/8 1/4 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8

Suction 3/8 3/8 3/8 1/2 1/2 5/8 5/8 3/8 1/2 1/2 5/8 3/4 1/2 5/8 3/4 3/4 3/4

Amps 3.26 3.81 4.21 6.3 7.3 8.6 4.6 3.6 4.7 6.2 3.5 4.1 5.9 4.2 4.4 6.2 7.4

Fan Watts 40 40 40 130 130 130 130 40 130 130 130 130 2x130 130 130 2x130 2x130

dB 47 47.8 49.5 53 54.6 55 59.2 51.7 55.5 55.5 55.6 58.7 62.2 52.3 66 62 62.1

Width mm 730 730 730 884 884 884 884 730 884 884 884 884 1140 884 884 1140 1140

Depth mm 380 380 380 380 380 380 380 380 380 380 380 380 380 380 380 380 380

Height mm 406 406 406 584 584 584 584 406 584 584 584 584 584 584 584 584 584

Housed Condensing Units (WHUs)

Extraction Rates at 32°C