Z series combination household (townhouse)central air conditioning unit
16
3) After compressor starts, if there is abnormal sound, stop the unit immediately and check it .
4) When cooling in summer, if temperature of water-out Tout≥15
℃
, compressor starts; if Tout≤7
℃
,
compressor stops, in which case , water pump keeps on running, cooling capacity of terminal is also supplied
by the refrigerated water in water pipe. During operation of the unit, energy can be automatically adjusted by
intellectual control system according to change of load.
5) If heat pump heats in winter and water-out temperature Tout≤45
℃
, compressor will begin running; if
Tout≥50
℃
, compressor will stop, and water pump will keep on running. Heating capacity of terminals is still
supplied by hot water in water pipe.
6) Obverse if water in / out temperature is usual. If temperature difference between in and out water
temperature ∆T>5
℃
, it means water flow in the system is low, at this time, check if there is blockage in water
filter, air has been exhausted, resistance in pipeline system is too high etc.; it is better when ∆T is between
3-5
℃
.
7) After trial run, clean the filter on pipeline first, and then the unit can begin normal operation. It is
necessary to disassemble and clean the filter periodically (once a month) to ensure normal operation of the
unit.
Note:
Since the unit adopts total hermetic scroll compressor, phase sequence of power must be correct,
and it is forbidden for operate with reverse power supply for long time.
Note: For above mentioned trial run parameters, please take the latest released control logic as reference.
10. Usage Instruction for Accessories
10.1 Auto water fill valve
Application specification: water-replenishing valve with stabilivolt and pressure-relief equipment can
automatically keep hydraulic pressure of system at a stable value. If
pressure of the system decreases, the valve will open automatically
so that water can be filled in the system. After it reaches set pressure,
valve will close automatically. When water-replenishing valve is
under normal operation, and hydraulic pressure of system is higher
than set pressure, the valve with check function will stop water from
backflow even pressure of system increases. During inspection or
emptying of system, cut-off valve should be manually tightened and
water source should be shut off.
Pressure setting:
Setting pressure of water-replenishing valve
is determined by working pressure of system, and can be adjusted
automatically. During adjusting, water-replenishing valve should be
in working state. Connect pressure meter to joint of G1/4", loosen
tightened nut and adjust the pressure adjusting bolt. After pressure is adjusted to working pressure of system,
tighten the nut.
Note: If pressure of water-replenishing source for unit is lower than the set pressure of water-replenishing
valve for a long time (abnormal working state), a one-way valve should be added at the outlet of water-
replenishing valve or manually close the hand wheel of water-replenishing valve. Dimension of joint of water-
replenishing pipe is G1/2".
82.5
G1/4
〞
G1/2
〞
Tighten nut
Press Handwheelure
adjusting screw
Handwheel
black ABS
