English
1
3
2
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 5000 5200 5400 5600 5800 6000 6200
0
1
2
3
Air flow (m
3
/h)
Available pressure
(P
a)
Ductwork curve
11
SysHrw
11.2. MODIFYING THE AIR BLOWING DIRECTION
The unit sizes 096 to 120 can be supplied configured for either
frontal air blowing, known as "IN LINE", or for side air blowing,
known as "REAR". It is also possible to modify the air-blowing
configuration on site. To achieve this:
1.
Remove the top panel
1
.
2.
Remove the fan motor access panel
2
and release a small
length of motor cable.
3.
Remove the fan blower panel
3
.
4.
Fit the fan blower panel
3
in the same location as the
access panel
2
.
5.
Refit the fan access panel
2
.
6.
Refit the top panel
1
.
11.3. FILTER ACCESS
Each unit is supplied with a connection frame also serving as the filter
support. This enables to filter to be removed from the side without
having to dismantle the duct or the connection frame.
11.4. VENTILATION
An outdoor air intake (new air) may be required for ventilation. The blown air temperature must be
controlled in order to avoid the temperature of the mixture of outdoor air and return air at the heat pump
inlet exceeding the appliance’s operating limits. It is also common practice to shut down ventilation during
periods of inoccupation (night time setting of the set temperature).
Each appliance’s ventilation system is generally a sub-system within the building, with its own distribution
duct network. The simple introduction of outdoor air into each return air plenum, quite close to the unit’s
return air intake is sufficient and recommended. New air should not be introduced directly into the appliance.
Provide for a sufficient distance to ensure effective mixing of the outdoor air with the return air. (Refer to
"Operating limits").
The flow / static pressure adjustment is made with the aid of a variable pulley. When adjusting this pulley,
it is important to ensure that the belt is positioned properly. The pulleys / belt assembly must be aligned
perfectly and the belt tensioned in accordance with best practices.
11.5. AERAULIC ADJUSTMENT
11.5.1. MODEL SYSHRW096
0.
Pulley close 0 round
1.
Pulley open 1 round
2.
Pulley open 2 round
3.
Pulley open 3 round
