Sinclair GSH-60IRA series Operational Manual page 25

Note:
1. The water pump is three speed-adjustable(maximum/medium/minimum), In most
case, we strongly recommended to set speed as maximum;
2. If the noise of the pump is not acceptable, we recommended change the default
speed to medium speed, but to secure enough flow rate, do not set water speed as
"Min", it can lead unexpected flow rate error "EC";
9.6 Water Volume and Expansion Vessel Pressure
Note:
Expansion vessel is included which 10 liter and 1bar pre-pressure.
Total water volume of 280 liter is default; If total water is changed because of installation
condition, the pre-pressure should be adjusted to secure proper operation. If the indoor
unit is located at the highest position, adjustment is not required;
Minimum total water volume is 20 liter;
AIR-TO-WATER HEAT PUMP INSTALLATION MANUAL
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