Sinclair S therm Series Service Manual page 123

4.5.4 Precautions on installation of indoor unit
(1) Keep the indoor unit away from heat sources like heat sink and so on in the room as much as possible.
(2) Keep the indoor unit as close as possible to outdoor unit. Level distance between connection pipes
cannotexceed 20m(4.0~6.0kW) or 25m (8.0~10kW) and vertical distance cannot exceed 15m.
(3) Instructions for Water Makeup and Air Removal
Note: once the automatic relief valve cap has not been loosened before operation for removing air at top of the
auxiliary electric heater, it would work without enough water.
Step1: connect water pipes and loosen the automatic relief valve cap.
Step 2: open the cut-off valve at the water makeup pipe and make up water from the tap water pipe until the
water pressure gage reads 2.0~2.5bar.
Requirements for Water Makeup
Make up water from the tap water pipe to the return water pipe and meanwhile open the automatic relief valve
until the water system is full and no air is trapped.
The gage pressure requirement for makeup water is 2.0~2.5bar. Do not let it exceed 3bar, as it would affect
adversely pipes and pipe connectors and lead to water leak. Also do not let it too low, as water shortage would
trigger protection for the flow switch and then the unit would fail to run normally. When water pressure is lower than
1.0bar, pressurize it to the required pressure.
(4) Instructions for Air Removal through the Control Panel
The control panel allows air removal operation for the water system as stated below.
At the menu page, select "COMMISION" and go to the setting as shown below, with option "FUNTION"
•
at left and "PARAM." at right.
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