Instruction Manual ZHK
98/129
V07-19.0
-
Air entering in the system is to avoid strictly!
-
For R407C and R134a scroll compressors use Emkarate RL 32 3MAF oil.
8.3
Test run
After having done the preparatory work the AHU can be started for the test run.
-
For testing the device and measuring the motor data and the volumetric flow rate, the device
must be fully connected to the operational duct system.
-
The AHU doors must be closed, because by eliminating the system-side pressure drop meas-
urement errors will be the result.
Before starting the fan open the dampers! Fan may not run against closed damp-
ers.
In addition, the actual power consumption of all phases shall be measured and compared with the
nameplate. If the actual power consumption is too high, there is maybe a faulty connection. The
system must be shut down immediately.
Measure the volume flow and the pressure difference. Often the measured airflow does not match
with the design data of the device.
Possible causes for low airflow:
-
The external pressure drop is higher than indicated on the technical data sheet.
-
e.g. closed fire or VAV dampers in the duct
8.3.1
Adjusting variable pullies
Figure 194:
Smallest working diameter
Figure 195:
Biggest working diameter
Belt type
Pulley type
Min. working di-
ameter (mm)
H max.
(mm)
Max. working di-
ameter (mm)
SPZ
RST 84
62
9
80
RST 95
73
9
91
RST 100
78
9
96
RST 108
90
7
104
SPA
RST 108
76
13
102
RST 120
88
13
114
RST 129
97
13
123
RST 139
109
12
133
RST 146
116
12
140
RST 156
126
12
150
RST 164
134
12
158
RST 177
149
11
171
RST 187
159
11
181
Summary of Contents for ZHK Series
Page 1: ...ZHK INSTRUCTION MANUAL ...