Functions And Control; Startup; Startup Procedure; Installation Check - Haier MRV5-H Service Manual

6. Functions and Control

6.1 Startup

6.1.1 Startup Procedure

1. Materials preparation before on-site commissioning
--Printed drawing of architectural design
--Printed installation check list and system start request
--Startup manual
--MRV 5-H service manual
--Troubleshooting and error codes
2. Read carefully before start up

3. Installation check

--installation check list
--Parameter standard check list
4. Operation
--Dip switch settings for indoor units
--Dip switch settings for outdoor units
--Dip switch settings for controllers
--Power on
--Locking quantity of indoor and outdoor units (BM1-1/BM1-2)
5. Trail operation
--Startup of indoor units
--Running parameter check
--Running parameter standard
--Completion of startup report
6.1.2 Installation Check
1. Piping
--Enough pipe supports
--Branch fittings installed flat and correctly
--Brazing (Nitrogen flow)
--Branch pipe distance,1m (39.37 inch) away from each other and 0.5m (19.7 inch) far from IDU
2. Drain
--1% gradient (indoor unit)
--Outlet for drain pipe (indoor unit)
--Aerial part height above 200mm (8 in.) (outdoor unit)
3. Communication wire (important)
--PQ cable connected hand over hand (daisy chain)
--The PQ shielded layer must be single point grounded to master unit
--The PQ cable is 2X0.75mm with shielded layer
--There is at least 10cm (3.94 inch) distance between communication and power source line
--Don't connect the terminal PQ to the ODU before completing start up; it may cause premature start
4. Electric wire
--Independent power line to each IDU
-- Same phase power supply
-- Add breaker for each IDU
-- Electricial wires installed to IDU and ODU correctly
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