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Split Installation
Split Installation
Installing the indoor box Split
The Hydro box contains, electric backup heater, water to refrigerant heat
exchanger, filter ball, flow meter, flow switch, expansion vessel, an 8m pump,
cylinder sensor (blue) and the remote controller.
Install the unit indoors, it’s not waterproof.
It needs to be sited within 75m of the hot water cylinder, less than 75 or 30m
m from the outdoor unit.
The box is:
•
2-3hp 450mm wide, 820mm high, 275mm deep. It weighs 45kg
•
4-6hp 520mm wide, 940mm high, 360mm deep. It weighs 48kg
•
8-10hp 670mm wide, 990mm high, 360mm deep. It weighs 62kg
Note the pump in the split can only manage a run of 10m at 28mm diameter
copper each way to the header or cylinder.
Split units need a drain connection for the Robokit and condensation
Refrigeration pipework Combi
Your fridge engineer will need to pipe between the indoor and outdoor units
with refrigeration pipework.
Pipe Sizes
Outdoor Unit & Yutaki M
Indoor Unit
Model
Pipe Size
Model
Pipe Size
Gas Pipe
Liquid Pipe
Gas Pipe
Liquid Pipe
2 HP
Ø 12.7 (1/2”) (*)
Ø 6.35 (1/4”)
2.0 HP
Ø 15.88 (5/8”) (*)
Ø 6.35 (1/4”)
2.5 HP
Ø 6.35 (1/4”) (*)
2.5 HP
Ø 9.52 (3/8”) (*)
( 3 - 6 ) HP
Ø 15.88 (5/8”)
Ø 9.52 (3/8”)
( 3.0 - 6.0 ) HP
Ø 15.88 (5/8”)
Ø 9.52 (3/8”)
8 HP
Ø 25.4 (1” 1/18)
Ø 9.52 (3/8”)
8 HP
Ø 25.4 (1” 1/18)
Ø 9.52 (3/8”)
10 HP
Ø 12.7 (1/2”)
10 HP
Ø 12.7 (1/2”)
Note on the 2 and 2.5HP units run the pipes as per outdoor unit, the indoor comes with adaptors to suit the pipework.
Pipe Limits
Outdoor Unit (HP)
2
2.5
3
4
5
6
8
10
Maximum piping length between
outdoor unit and indoor unit (Lmax)
Actual piping length (L)
50m
75m
70m
Equivalent piping length
70m
95m
90m
Minimum piping length between
outdoor unit and indoor unit (Lmin)
Actual piping length (L)
5m
Maximum height difference between
indoor and outdoor unit (H)
Outdoor unit higher than indoor unit
30m
Indoor unit higher than outdoor unit
20m
All units have enough refrigerant R410a for 15m of pipework (each way).
The additional refrigerant charge required is:
•
Size 2 add 30g/m after 15m
•
Size 3 add 40g/m after 15m
•
Size 4 add 60g/m after 15m
•
Size 6 add 60g/m after 15m
•
Size 8 add 65g/m after 15m
•
Size 10 add 65g/m after 15m
If the pipe length is under 5m set DSW2 pin 1 up to on. If the pipe length is over 30M set DSW2 pin 2 to up on
When delivered the indoor unit expansion valves are fully closed. To open the valve you must
apply power to the unit and make sure dip switch DSW4 pin 2 to up .
You MUST pressure test, vac and charge using both service valves at all times.
When you finish vaccing and charging switch power off the unit, set DSW4 pin 2 to off and then power up again or the unit wont
start.
+H
