Connecting Condensate Pipe To The Indoor Unit; Checking Tightness And Filling The System; Electrical Connection; General Notes - Bosch Climate 3000i Installation Instructions Manual

Installation
External diameter of
pipe Ø [mm]
6.35 (1/4")
9.53 (3/8")
12.7 (1/2")
15.9 (5/8")
Table 7 Key data of pipe connections
3.4.2

Connecting condensate pipe to the indoor unit

The condensation catch pan of the indoor unit has two connections. A
condensate hose and bung are mounted on these connections at the
factory and can be replaced ( Fig. 10).
▶ Only route the condensate hose with a slope.
3.4.3

Checking tightness and filling the system

Checking tightness
Observe the national and local regulations when carrying out the
tightness test.
▶ Remove the caps on the three valves ( Fig. 18, [1], [2] and [3]).
▶ Connect the Schrader opener [6] and pressure gauge [4] to the
Schrader valve [1].
▶ Screw in the Schrader opener and open the Schrader valve [1].
▶ Leave valves [2] and [3] closed and fill the system with nitrogen until
the pressure is 10 % above the maximum operating pressure
( page 63).
▶ Check whether the pressure is still the same after 10 minutes.
▶ Discharge the nitrogen until the maximum operating pressure is
reached.
▶ Check whether the pressure is still the same after at least 1 hour.
▶ Discharge nitrogen.
Filling the system
NOTICE
Malfunction due to incorrect refrigerant
The outdoor unit is filled with refrigerant R32 at the factory.
▶ If refrigerant needs to be topped up, only use the same refrigerant.
Do not mix refrigerant types.
▶ Evacuate and dry system with a vacuum pump ( Fig. 18, [5]) until
the pressure is roughly −1 bar (or approx. 500 microns).
▶ Open the valve at the top [3] (liquid side).
▶ Use a pressure gauge [4] to check whether the flow is unobstructed.
▶ Open valve at bottom [2] (gas side).
The refrigerant is distributed round the system.
▶ Afterwards, check the pressure ratios.
▶ Unscrew the Schrader opener [6] and close the Schrader valve [1].
▶ Remove the vacuum pump, pressure gauge and Schrader opener.
▶ Reattach the valve caps.
▶ Reattach the cover for pipe connections to the outdoor unit.
58
Tightening torque [Nm] Flared opening diameter
18-20
32-39
49-59
57-71
Flared pipe end
(A) [mm]
8.4-8.7
90°± 4
13.2-13.5
A
16.2-16.5
19.2-19.7
3.5

Electrical connection

3.5.1

General notes

WARNING
Risk to life from electric shock!
Touching live electrical parts can cause an electric shock.
▶ Before working on electrical parts, disconnect all phases of the
power supply (fuse/circuit breaker) and lock the isolator switch to
prevent unintentional reconnection.
▶ Work on the electrical system must only be carried out by a qualified
electrician.
▶ Observe safety measures according to national and international
regulations.
▶ If there is a safety issue with the power supply or if there is a short
circuit during installation, inform the customer in written form and do
not install the unit until the issue is resolved.
▶ All electrical connections must be made in accordance with the
electrical connection diagram.
▶ Only strip cable insulation with the correct tools.
▶ Do not connect any additional loads to the mains power supply of the
unit.
▶ Do not mix up live and neutral wires. This can lead to malfunctions.
▶ If the mains power supply is fixed, install an overvoltage protector
and isolator which is designed for 1.5 times the maximum power
consumption of the unit.
3.5.2

Connecting the indoor unit

The indoor unit is connected to the outdoor unit using a 5-core
communication cable of the type H07RN-F. The conductor cross-section
of the communication cable should be at least 1.5 mm
NOTICE
Material damage due to incorrectly connected indoor unit
Voltage is supplied to the indoor unit via the outdoor unit.
▶ Only connect the indoor unit to the outdoor unit.
To connect the communication cable:
▶ Fold up the top cover ( Fig. 19).
▶ Undo screw and remove cover of the interface panel.
▶ Remove screw and cover [1] of the terminal ( Fig. 20).
▶ Knock out an opening for the cable feed [3] on the rear of the indoor
unit and feed the cable through.
▶ Secure cable to the strain relief [2] and connect to the terminals W,
1(L), 2(N), S and
▶ Note assignment of wires to the terminals.
▶ Reattach the covers.
▶ Route the cable to the outdoor unit.
Pre-assembled flare nut
thread
3/8"
3/8"
5/8"
45°± 2
3/4"
R0.4~0.8
2
.
.
Climate 3000i – 6721823680 (2021/02)