Installation manual

10
Installation
Drain hose and base pan knockouts (Fig. 6)
How to remove the front panel (Fig. 5)
Opening cable knockouts
There is a pre-cut part that can be removed for running
wires. Do not remove the unit front panel for easier drilling
of the knockouts. The pre-cut section of the sheet can be
removed by punching the 3 connection points along the
line first using a screwdriver and finally with your hands
(See Fig. 4).
When the cable knockout is open, remove the burrs and
fit the cable protective bush supplied with the unit for
cable
1. Remove screws of the front panel (See fig. 5).
2. Pull the front panel downward with the handle.
See fig. 6.
In case of draining through the drain hose, attach the
drain nipple (A) and use the drain hose (Inner diam:
16mm) sold on the market. When there is a possibility of
freezing of the drain in cold weather maintain a
continuous downward slope in the drain pipe to prevent
the drain becoming blocked by ice.
The drainage ability increases when knockout holes on
the base pan are opened. (Open the knockout hole to
outside using a hammer (B), etc.). Take care not to
damage the evaporator coil when opening the knockout
holes. We recommend that the knockout holes are opened
for all UK & Ireland installations.
Operating limits (Fig. 10)
Operation in heating: See fig. 10
A- Outdoor air temperature (°C)
B- Outlet water temperature (°C)
Before installation, check strength and levelness of the
base so that abnormal noise is not generated. According
to the dimensions and clearances, fix the base firmly
with the anchor bolts (Anchor bolt, nut: 4 off M10).
If the outdoor unit is installed in a very windy place,
protect the fan with a wind protection screen and check
that it works correctly.
Radiator Design / Defrost Cycle
The Aeromax Plus system typically requires at least one
radiator (usually located in the same location as the room
thermostat) to remain “open circuit” with no thermostatic
radiator valve fitted.
The minimum design criteria to be employed by the
installer is to allow 3 ltr per kW of nominal out of the heat
pump.
For example:
8kW Aeromax Plus x 3ltr = 24 ltr of water to act as open
loop.
(Fig. 4)
Circulating Pump
A circulating pump is not supplied as part of the
Aeromax Plus installation pack. A suitable circulating
pump must be specified based on the pressure loss in the
system.
Pressure loss curves for the Aeromax Plus are shown in
fig. 11.
(Fig. 11)
Climatic Curve
To qualify as a Weather Compensated heat pump the
Aeromax Plus is pre-programmed with a climatic curve.
See fig. 12.
Care must be taken to ensure this curve is suitable for
the application and heat emitters used. There are 12
pre-programmed climatic curves selectable using the
User Comfort Interface KHP0008. A custom climatic
curve can also be programmed.
(Fig. 12)