How do I read a WRC model number?

WRC is the air-cooled condenser series. The three digits are the nominal heat rejection divided by 100, so WRC198 is 19,800 W/K nominal. LN indicates the 8-pole low-noise motor; no suffix means the 6-pole standard motor. EM indicates an EBM EC motor; blank means a Ziehl-Abegg motor.

What is the difference between standard and LN models?

Standard models run at 880 rpm high speed and 660 rpm low speed. LN models run at 680 rpm and 530 rpm. LN models are typically 6 to 7 dB(A) quieter in sound power but deliver less airflow, so a physically larger model is usually needed for the same duty.

What conditions are the published capacities based on?

Capacities are based on R404A, 0 K sub-cooling, 32 degrees C ambient, 50 degrees C condensing and 100 degrees C suction temperature. Capacity is quoted in W per K, so site duty equals the tabled figure multiplied by the actual condensing temperature difference.

Can the condenser be mounted for side airflow?

Yes. Every model supports both top ventilation and side ventilation. The casing dimensions change between the two orientations, and multiple units can be installed side by side.

Muller WRC Air Cooled Condenser

Name: Muller WRC Air Cooled Condenser
Brand: Muller
Availability: InStock

Brand: Muller

Category: Air Cooled Condensers

WRC Series

WRC Air Cooled Condenser

Muller Condenser

Refrigeraton Air Cooled Condenser

Description

Muller WRC Series air-cooled condensers

Twenty-eight commercial condenser models built around a floating coil that moves with the heat instead of cracking under it. Top or side airflow, 800 mm fans, and heat rejection from 177 kW to 552 kW.

Supplied, selected and serviced in Malaysia by RNA Engineering & Trading Sdn. Bhd.

28models, WRC098 to WRC307LN

177–552 kWheat rejection, R404A at 18 K TD

2–5fans, 800 mm diameter

IP54electrical cabinet as standard

Built for rooftops that never cool down

The WRC series is a commercial remote condenser for supermarkets, cold storage and food service plant. It pairs a large-diameter 800 mm fan with a deep grooved-tube coil, so it moves the heat you need without spinning fast enough to become a noise complaint. Every model is available in a standard or low-noise fan configuration and can be installed for either top or side discharge.

Patented floating coil

The coil expands and contracts independently of the casing. Thermal movement never loads the tube joints, which is where rooftop condenser leaks normally begin.

Grooved tube coil

Internally grooved tubes increase the wetted surface and break up the refrigerant film, raising heat transfer for the same face area.

Two-speed motors

External rotor three-phase motors with built-in thermal protection and an integral header protection shield. Drop to low speed at night or in cool ambient and cut fan power by roughly 40 percent.

IP54 control panel

Fans arrive pre-wired to a weatherproof IP54 cabinet, so site work is a supply cable and a control signal rather than a wiring exercise.

Top or side airflow

The same model can discharge upward on Euro legs or horizontally against a wall. Units can also be banked side by side for larger duties.

Galvanised steel casing

Galvanised steel plain sheet as standard, with optional blue-fin coated coils for coastal and high-humidity sites.

How to read a WRC model number

WRC198LN-EM

WRCAir-cooled condenser series.

198Nominal heat rejection divided by 100. WRC198 is 19,800 W/K nominal.

LN8-pole low-noise motor. No suffix means the 6-pole standard motor.

EMEBM EC motor. Blank means a Ziehl-Abegg motor, which is the standard build.

Nominal capacity is stated at 0 K sub-cooling, 32 °C ambient, 50 °C condensing and 100 °C suction temperature on R404A.

Full specification tables

All 28 models are listed below. Type a model number, a capacity or a fan count to filter every table on the page at once.

Capacity and electrical data — standard condensers High speed 880 rpm, low speed 660 rpm. Capacity in W/K at 0 K sub-cooling, 32 °C ambient, 50 °C condensing, 100 °C suction.
Model	R404A high (W/K)	R22 high (W/K)	Airflow high (m³/h)	R404A low (W/K)	R22 low (W/K)	Airflow low (m³/h)	Fans	Power hi/lo (W)	Max current hi/lo (A)	Duty @18 K (kW)
WRC098	9,840	9,350	44,244	8,360	7,950	37,620	2	4,000 / 2,500	8 / 4.6	177
WRC112	11,210	10,650	40,890	9,190	8,730	30,384	2	4,000 / 2,500	8 / 4.6	202
WRC119	11,860	11,270	38,232	9,610	9,130	28,008	2	4,000 / 2,500	8 / 4.6	213
WRC123	12,310	11,690	36,036	9,850	9,350	26,136	2	4,000 / 2,500	8 / 4.6	222
WRC147	14,750	14,010	66,384	12,540	11,910	56,412	3	6,000 / 3,750	12 / 6.9	266
WRC167	16,740	15,900	61,344	13,730	13,040	45,576	3	6,000 / 3,750	12 / 6.9	301
WRC178	17,760	16,870	56,628	14,390	13,660	41,472	3	6,000 / 3,750	12 / 6.9	320
WRC185	18,460	17,540	54,036	14,770	14,030	39,168	3	6,000 / 3,750	12 / 6.9	332
WRC198	19,790	18,800	88,488	16,820	15,980	75,204	4	8,000 / 5,000	16 / 9.2	356
WRC225	22,470	21,350	81,792	18,430	17,510	60,168	4	8,000 / 5,000	16 / 9.2	404
WRC240	23,970	22,770	76,500	19,420	18,440	56,016	4	8,000 / 5,000	16 / 9.2	431
WRC247	24,650	23,420	72,036	19,720	18,740	52,236	4	8,000 / 5,000	16 / 9.2	444
WRC297	29,710	28,220	95,616	24,070	22,860	70,020	5	10,000 / 6,250	20 / 11.5	535
WRC307	30,690	29,160	90,036	24,550	23,330	65,268	5	10,000 / 6,250	20 / 11.5	552

No standard models match that search.

Capacity and electrical data — low-noise (LN) condensers High speed 680 rpm, low speed 530 rpm. Same rating basis as the standard range.
Model	R404A high (W/K)	R22 high (W/K)	Airflow high (m³/h)	R404A low (W/K)	R22 low (W/K)	Airflow low (m³/h)	Fans	Power hi/lo (W)	Max current hi/lo (A)	Duty @18 K (kW)
WRC098LN	8,430	8,010	33,912	7,570	7,190	26,784	2	2,100 / 1,540	4.8 / 3	152
WRC112LN	9,490	9,020	31,536	8,190	7,790	24,660	2	2,100 / 1,540	4.8 / 3	171
WRC119LN	9,880	9,390	29,340	8,410	7,990	22,572	2	2,100 / 1,540	4.8 / 3	178
WRC123LN	9,990	9,490	27,504	8,380	7,960	20,916	2	2,100 / 1,540	4.8 / 3	180
WRC147LN	12,640	12,010	50,868	11,350	10,780	40,176	3	3,150 / 2,310	7.2 / 4.5	228
WRC167LN	14,220	13,510	47,304	12,270	11,660	36,972	3	3,150 / 2,310	7.2 / 4.5	256
WRC178LN	14,860	14,120	44,028	12,640	12,020	33,876	3	3,150 / 2,310	7.2 / 4.5	267
WRC185LN	15,010	14,260	41,256	12,600	11,970	31,392	3	3,150 / 2,310	7.2 / 4.5	270
WRC198LN	17,060	16,210	67,824	15,320	14,560	53,568	4	4,200 / 3,080	9.6 / 6	307
WRC225LN	19,000	18,050	63,072	16,400	15,580	49,320	4	4,200 / 3,080	9.6 / 6	342
WRC240LN	19,790	18,800	58,680	16,840	16,000	45,144	4	4,200 / 3,080	9.6 / 6	356
WRC247LN	19,990	18,990	55,008	16,780	15,940	41,832	4	4,200 / 3,080	9.6 / 6	360
WRC297LN	24,730	23,490	73,368	21,040	19,990	56,448	5	5,250 / 3,850	12 / 7.5	445
WRC307LN	25,010	23,760	68,796	20,990	19,940	52,344	5	5,250 / 3,850	12 / 7.5	450

No low-noise models match that search.

Supply is 380 V / 3 phase throughout. Listed power and current are the maximum values the external rotor motor may draw; actual figures vary with supply voltage, condenser layout and fin cleanliness but will not exceed these. Duty at 18 K is the R404A high-speed figure multiplied by an 18 K condensing temperature difference, given as an indication only.

Dimensions and weights All dimensions in mm. Length, A, B and C are identical for both airflow orientations; only casing width and height change.
Model	L	W top vent	H top vent	W side vent	H side vent	A	B	C	Transport (m³)	Net (kg)	Packed (kg)
WRC098LN	3,260	1,250	1,410	1,136	1,250	2,750	—	—	6.7	410	440
WRC112LN	3,260	1,250	1,410	1,136	1,250	2,750	—	—	6.7	430	460
WRC119LN	3,260	1,250	1,410	1,136	1,250	2,750	—	—	6.7	460	490
WRC123LN	3,260	1,250	1,410	1,136	1,250	2,750	—	—	6.7	500	530
WRC147LN	4,660	1,250	1,410	1,136	1,250	4,150	2,775	1,375	8.7	560	600
WRC167LN	4,660	1,250	1,410	1,136	1,250	4,150	2,775	1,375	8.7	610	650
WRC178LN	4,660	1,250	1,410	1,136	1,250	4,150	2,775	1,375	8.7	660	700
WRC185LN	4,660	1,250	1,410	1,136	1,250	4,150	2,775	1,375	8.7	710	750
WRC198LN	6,068	1,250	1,410	1,136	1,250	5,550	2,775	—	11.7	740	800
WRC225LN	6,068	1,250	1,410	1,136	1,250	5,550	2,775	—	11.7	820	880
WRC240LN	6,068	1,250	1,410	1,136	1,250	5,550	2,775	—	11.7	890	950
WRC247LN	6,068	1,250	1,410	1,136	1,250	5,550	2,775	—	11.7	960	1,020
WRC297LN	7,469	1,250	1,410	1,136	1,250	6,950	2,775	1,400	13.7	1,130	1,200
WRC307LN	7,469	1,250	1,410	1,136	1,250	6,950	2,775	1,400	13.7	1,210	1,290

No models match that search.

Mounting hole pitch is 1,065 mm on top-ventilation units and 1,035 mm on side-ventilation units. Header projection is 133 mm. Dimensions are published for the single-row LN casings; standard-speed models share the same casing sizes. Confirm certified drawings with RNA before steelwork is fabricated.

Coil rows, refrigerant charge and connection sizes Fin spacing 12 FPI on all standard builds. Charge is the pump-down volume at 32 °C, based on 80 percent liquid and 20 percent gas by coil volume.
Model	Coil rows	FPI	R404A charge (kg)	Inlet (mm)	Outlet (mm)
Standard condensers
WRC098	3	12	29	54.4	54.4
WRC112	4	12	37	54.4	54.4
WRC119	5	12	45	54.4	54.4
WRC123	6	12	53	54.4	54.4
WRC147	3	12	43	66.7	66.7
WRC167	4	12	55	66.7	66.7
WRC178	5	12	67	66.7	66.7
WRC185	6	12	79	66.7	66.7
WRC198	3	12	54	66.7	66.7
WRC225	4	12	70	66.7	66.7
WRC240	5	12	86	66.7	66.7
WRC247	6	12	102	66.7	66.7
WRC297	5	12	106	66.7	66.7
WRC307	6	12	126	66.7	66.7
Low-noise condensers
WRC098LN	3	12	29	54.4	54.4
WRC112LN	4	12	37	54.4	54.4
WRC119LN	5	12	45	54.4	54.4
WRC123LN	6	12	53	54.4	54.4
WRC147LN	3	12	43	66.7	66.7
WRC167LN	4	12	55	66.7	66.7
WRC178LN	5	12	67	66.7	66.7
WRC185LN	6	12	79	66.7	66.7
WRC198LN	3	12	54	66.7	66.7
WRC225LN	4	12	70	66.7	66.7
WRC240LN	5	12	86	66.7	66.7
WRC247LN	6	12	102	66.7	66.7
WRC297LN	5	12	106	66.7	66.7
WRC307LN	6	12	126	66.7	66.7

No models match that search.

Sound data Sound pressure measured at 3 m from the fan plane, to ISO 9614-1 and AS 1217.7-1985. Site reflection will change what you measure.
Models	Lw high dB(A)	Lp 3 m high dB(A)	Lw low dB(A)	Lp 3 m low dB(A)
Standard condensers — 880 / 660 rpm
WRC098 – WRC123	86	69	81	64
WRC147 – WRC185	88	71	83	64
WRC198 – WRC247	89	72	84	67
WRC297 – WRC307	90	73	85	68
Low-noise condensers — 680 / 530 rpm
WRC098LN – WRC123LN	79	62	76	59
WRC147LN – WRC185LN	81	63	78	60
WRC198LN – WRC247LN	82	65	79	62
WRC297LN – WRC307LN	83	66	80	63

No models match that search.

Options and standard build

WRC configuration matrix ● standard ○ optional ✕ not available
Item	Option	WRC
Motor	Ziehl-Abegg motor	●
Motor	EBM EC motor	○
Motor	Interlink motor	✕
Fin	Fin coating, blue fin	○
Casing	Galvanised steel plain sheet	●
Casing	Stainless steel	✕
Fin spacing	12 FPI (2.12 mm)	●
Fin spacing	10 FPI (2.54 mm)	○
Fin spacing	9 FPI (2.82 mm)	○
Other	Fan wiring	●
Other	Electrical cabinet, IP54	●
Other	Two banks condenser	○

Wider fin spacing at 10 or 9 FPI is worth specifying for dusty sites, bakeries and anywhere the coil cannot be washed often. Blue-fin coating is the usual choice for coastal installations. If you need an accessory that is not listed here, ask RNA and we will check it with the factory.

Selecting the right model

Published capacity is stated in watts per kelvin, so it scales directly with the condensing temperature difference you design for. Before comparing that figure against your duty, correct it for site conditions.

Required condenser standard THR = K2 ÷ (K1 × K3 × K4) × required capacity

Correction factors
Factor	Applies to	Range
K1	Ambient temperature	0.979 at 15 °C → 1.013 at 45 °C
K2	Altitude	1.00 at sea level → 1.12 at 1,600 m
K3	Internal sub-cooling	0.898 to 0.996, depending on sub-cooling and KTD
K4	Fin type	1.00 aluminium, 0.995 blue fin

K1 — ambient temperature
Ambient °C	15	20	25	30	35	40	45
Factor	0.979	0.986	0.992	0.998	1.003	1.008	1.013

K2 — altitude
Altitude m	0	600	800	1,000	1,200	1,400	1,600
Factor	1	1.04	1.06	1.075	1.09	1.11	1.12

K3 — internal sub-cooling Read against the condensing temperature difference, KTD.
Sub-cooling K	KTD 3	KTD 5	KTD 10	KTD 15	KTD 20
2	0.966	0.976	0.989	0.994	0.996
4	—	0.934	0.975	0.986	0.990
6	—	—	0.946	0.972	0.980
8	—	—	0.898	0.960	0.966

Worked example

Duty required: 300 kW heat rejection on R404A at a 15 K condensing temperature difference.
Capacity needed in W/K: 300,000 ÷ 15 = 20,000 W/K.
Site is Selangor at 35 °C ambient and near sea level, 4 K sub-cooling, aluminium fins. K1 = 1.003, K2 = 1.00, K3 = 0.986, K4 = 1.00.
Corrected requirement: 1.00 ÷ (1.003 × 0.986 × 1.00) × 20,000 = 20,229 W/K.
Standard range: WRC225 at 22,470 W/K clears it with margin. Low-noise range: WRC240LN at 19,790 W/K is marginally short, so step up to WRC247LN or WRC297LN.

The KTD in these tables is the saturated liquid temperature at the condenser outlet minus the inlet air temperature. Capacity figures assume all fans are running. Send us your duty, refrigerant and site conditions and we will run the selection for you.

Where the WRC series is used

Supermarkets and hypermarkets

Remote condensers for medium and low temperature packs, where roof space is shared with tenants and plant noise is regulated.

Cold storage and distribution

High ambient duty for chilled and frozen chambers, blast rooms and loading docks, with wider fin spacing available for dusty yards.

Food service and central kitchens

Compact two and three fan models for restaurant, hotel and catering plant rooms where the condenser sits close to occupied areas.

Process and industrial cooling

Multiple units banked side by side for larger process loads, using the same coil block and control approach across the plant.

Common questions

What does the floating coil design actually do?

The coil is allowed to expand and contract independently of the casing. Thermal movement is absorbed by the mounting instead of being transferred into the tube joints, which is where coil leaks normally start on a rooftop condenser. The result is a longer coil service life and fewer refrigerant losses over the life of the plant.

Standard or low noise — which should I specify?

Standard models run at 880 rpm high speed and 660 rpm low speed. LN models run at 680 rpm and 530 rpm and are roughly 6 to 7 dB(A) quieter in sound power. The trade-off is airflow: an LN model of the same size rejects less heat, so for a given duty you generally step up one or two model sizes. Where the condenser sits near residential boundaries or hotel rooms, the LN range is usually the cheaper answer once acoustic treatment is priced in.

Which refrigerants are covered?

Published capacity data covers R404A and R22. R404A is the rating basis. For other refrigerants, or for the KRC range which also publishes R134a and R410A data, contact RNA and we will confirm the selection with the factory.

Can units be installed side by side?

Yes. Multiple units can be banked in parallel, and a two-bank condenser is available as a factory option. Maintain the manufacturer's minimum clearance around each unit so that discharge air is not drawn back into the coil, which is the most common cause of high head pressure on a correctly sized condenser.

What is included as standard on delivery?

Galvanised steel casing, aluminium fins at 12 FPI, Ziehl-Abegg two-speed external rotor motors with built-in thermal protection, factory fan wiring, and an IP54 electrical cabinet. Blue-fin coating, EC motors, wider fin spacing and two-bank arrangements are ordered as options.

Do you supply and install in Malaysia?

RNA Engineering & Trading Sdn. Bhd. supplies the WRC range across Malaysia with selection support, commissioning advice and after-sales service. Tell us the duty and site conditions and we will come back with a model, a drawing and a price.

Send us the duty, we will send back the selection

Give us your heat rejection, refrigerant, design ambient and any noise limit. We will confirm the model, issue a certified drawing and quote delivery.

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