Marstair 526 HL Series, Technical Manual, Page: 4 / 31

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PRODUCT SELECTION
Combinations of indoor unit and condensing/heat pump unit can be chosen to give either air conditioning or heat pump
systems.
UNIT COMBINATIONS
Air Conditioning Systems Heat Pump Systems
HL/HLR MCU(+) HL/HLR MCU(+) HLR MHPUE
380 100 380 90 380 90
460 130 460 100 460 100
540 165 540 130 540 130
AIR CONDITIONER PERFORMANCE DATA
(All duties in kW)
UK CONDITIONS
ROOM 21°C/15°C
AMBIENT 27°C/19°C
EUROVENT (NEMA)
ROOM 27°C/19°C
AMB 35°C/24°C
TROPICAL
ROOM 29°C/19°C
AMB 46°C/24°C
MODEL
COMBINATIONLOW MIN SPEED MAX SPEED MAX SPEED EVAP MAX SPEED EVAP
HL/HLR+ MCU(+) TO SHR SENS TOT SH SEN TOTAL SHR SENS TOTAL SHR SENS
380 + 90 6.95 0.75 5.19 7.39 0.83 6.14 7.9 0.83 6.6 7.00 1.00 7.00
380 + 100 7.16 0.74 5.29 7.69 0.82 6.27 8.5 0.80 6.8 7.47 1.00 7.47
460 + 100 8.49 0.71 6.05 9.37 0.82 7.64 10.0 0.82 8.2 8.73 1.00 8.73
460 + 130 10.4 0.68 7.02 11.48 0.75 8.60 12.3 0.78 9.6 10.86 0.93 10.04
540 + 130 11.0 0.69 7.63 12.02 0.79 9.46 12.8 0.83 10.6 11.15 0.92 10.27
540 + 165 11.9 0.68 8.14 13.19 0.76 10.00 13.8 0.80 11.0 12.26 0.95 11.66
For medium speed duties, interpolate between minimum speed and maximum speed duties.
Rating conditions are to BS2852: Part 1: 1982: UK condition C; NEMA condition A; Tropical condition B.
HEAT PUMP PERFORMANCE DATA
a. Cooling,
(kW, max speed outdoor unit fan).
UK CONDITIONS EUROVENT (NEMA)
ROOM 21°C/15°C
AMBIENT 27°
C/19
°
C
ROOM 27°C/19°C AMBIENT 35°
C/24
°
C
MIN SPEED INDOOR FAN MAX SPEED INDOOR FAN MAX SPEED INDOOR FAN
HL/HLR TOTAL SHR SENS TOTAL SHR SENS TOTAL SHR SENS
380 6.95 0.75 5.19 7.39 0.83 6.14 7.9 0.83 6.6
460 8.49 0.71 6.05 9.37 0.82 7.64 10.0 0.82 8.2
540 11.02 0.69 7.63 12.02 0.79 9.46 12.8 0.83 10.6
b. Heating,
(Room 20°C/12°C with outdoor unit fan running at maximum speed).
HEATING OUTPUT AT 7
°
C AMBIENT HEATING OUTPUT AT -1
°
C AMB
IENT
MAX SPEED INDOOR FAN MAX SPEED INDOOR FAN
HL/HLR kW COP kW COP
380 9.1 2.9 7.8 3.0
460 11.6 3.7 10.0 3.5
540 13.2 4.0 10.6 3.4