98
Operation
Electrical Connection
Wiring regulations about wire diameter differs from country to country. Please refer to your LOCAL
ELECTRICAL CODES for field wiring rules. Be sure that installation comply with such rules and regulations.
General Precaution
Ensure that the rated voltage of the unit correspond to the name plate before carrying out proper wiring
according to the wiring diagram.
Provide a power outlet to be used exclusively for each unit. A power supply disconnect and a circuit breaker
for over-current protection should be provided in the exclusive line.
The unit must be GROUNDED to prevent possible hazard due to insulation failures
Every wiring must be firmly connected.
Every wiring should not touch the refrigerant piping, compressor and any moving parts of fan motor.
Operational Check
After all wiring is completed and the system is charged with refrigerant, make sure the unit is operating
properly. Check that :-
Condenser fans are running with warm air blowing off the condensing unit.
Evaporator blowers are running and discharging cool air from ducts.
Suction line and liquid line pressures are in the region of 75 psig and 275 psig respectively.
Sequential Controller
It is allowed to configure the controller to suit individual’s need with details below :
Model Selection
1. Number of Compressor
The control can be configured into 6 main types base on number of compressors
by changing “
R42
” values :
Number of Compressor
R42 value
a.
Cooling / heater* 2 Compressor
20k
b.
Cooling / heater* 3 Compressor
47k
c.
Cooling / heater* 4 Compressor
Open
d.
Heat pump 2 compressors
1k
e.
Heat pump 3 compressors
3.3k
f.
Heat pump 4 compressors
9.1k
Note : * Cooling or heater model depending on SW1 and SW2 setting. Factory setting for number of
compressor is based on air conditioner models.
2. Number of Heater
Number of Heater
SW1(dip1)
SW2(dip2)
a.
No heater (0 heater)
off
off
b. 1 heater
on
off
c. 2 heaters
on / off
on
Note : Factory preset : SW1 = off; SW2 = off ~ no heater
Содержание MDB075B
Страница 1: ...MDB 2004 Ducted Split Systems Models MDB 075 750B MDB 125 150C MDB 075 500BR MDB 125CR...
Страница 38: ...37 Blower Performance Curves MDB 075B BLOWER PERFORMANCE CURVE...
Страница 39: ...38 MDB 100B BLOWER PERFORMANCE CURVE...
Страница 40: ...39 MDB 125B BLOWER PERFORMANCE CURVE...
Страница 41: ...40 MDB 125C BLOWER PERFORMANCE CURVE...
Страница 42: ...41 MDB 150B BLOWER PERFORMANCE CURVE...
Страница 43: ...42 MDB 150C BLOWER PERFORMANCE CURVE...
Страница 44: ...43 MDB 200B BLOWER PERFORMANCE CURVE...
Страница 45: ...44 MDB 250B BLOWER PERFORMANCE CURVE...
Страница 46: ...45 MDB 300B BLOWER PERFORMANCE CURVE L s...
Страница 47: ...46 MDB 350B BLOWER PERFORMANCE CURVE...
Страница 48: ...47 MDB 400B BLOWER PERFORMANCE CURVE...
Страница 49: ...48 MDB 450B BLOWER PERFORMANCE CURVE...
Страница 50: ...49 MDB 500B BLOWER PERFORMANCE CURVE...
Страница 51: ...50 MDB 600B BLOWER PERFORMANCE CURVE...
Страница 52: ...51 MDB 750B BLOWER PERFORMANCE CURVE...
Страница 53: ...52 Outlines And Dimensions Indoor MODEL MDB 075 100 B BR MODEL MDB 125C HORIZONTAL AIR DISCHARGE ONLY...
Страница 60: ...59 MODEL MMC 075C CR MODEL MMC 100C...
Страница 61: ...60 MODEL MMC 125BR 150C STANDARD VERTICAL DISCHARGE NON CONVERTIBLE...
Страница 69: ...68 MODEL INDOOR MDB 400B4 MDB 500B4 WITH SEQUENTIAL CONTROLLER OUTDOOR MMC 100B x 4 MMC 125B x 4...
Страница 70: ...69 MODEL INDOOR MDB 600B4 WITH SEQUENTIAL CONTROLLER OUTDOOR MMC 150C x 4...
Страница 71: ...70 MODEL INDOOR MDB 750B5 WITH MAGNETIC CONTACTOR OUTDOOR MMC 150C x 5 INDOOR AUXILLARY C1 C1...
Страница 72: ...71 Wiring Diagrams Heatpump INDOOR EXPORT MODEL MDB 075 100BR C3 0B MODEL MDB 125CR EXPORT...
Страница 73: ...72 MODEL MDB 150 200 250 BR2 EXPORT MODEL MDB 300 350 BR3 EXPORT...
Страница 74: ...73 MODEL MDB 400 500 BR4 EXPORT...
Страница 84: ...83 Refrigerant Circuit Diagram MODEL MMC 075C 100C...
Страница 85: ...84 MODEL MMC 075B 100B 125B 150C...
Страница 86: ...85 MODEL MMC 075CR WITH CAPILLARY TUBE EXPANSION SPECIFICATION...
Страница 87: ...86 MODEL MMC 100BR 125BR WITH CAPILLARY TUBE EXPANSION SPECIFICATION...
Страница 88: ...87 MODEL MMC 075CR WITH THERMAL EXPANSION VALVE SPECIFICATION...
Страница 89: ...88 MODEL MMC 100BR 125BR WITH THERMAL EXPANSION VALVE SPECIFICATION...
Страница 101: ...100 SEQUENTIAL CONTROLLER BLOCK DIAGRAM...
Страница 163: ...2004 McQuay International 1 800 432 1342 www mcquay com ISO 9002 REGISTERED...