MANDÍK CPV Installation, commissioning, and maintenance
IZU 02/2021
MANDÍK, a.s., www.mandik.cz
R
23
The following must be checked prior to initial start-up of the unit:
8.2
ACTIVITIES DURING INITIAL START-UP
The fans must not be started with the shut-off dampers in the unit or the control dampers in
the ductwork closed. Avoid a pressure surge caused by testing the functions of fire and other
quick-closing dampers.
The initial test operation of the unit should be less than 30 minutes. The unit and all its
sections must then be subjected to a thorough inspection.
After initial start-up, clean all the inlet filters or replace with new filters.
The following are checked during initial start-up:
The unit in general:
•
Listen for any unusual mechanical sounds
•
Check for excessive vibration from the unit
•
Seals for the unit’s chambers and the seals on all additional penetrations through the
housing of the unit
•
The fresh air (ODA) and exhaust (EHA) dampers are open
Hot water coil:
•
Leaks in the water system connections to the heat exchanger
Electric heater:
•
The airflow velocity must not drop below 1 m/s.
Cold water coil
•
Leaks in the water system connections to the heat exchanger
Direct cooler
•
Leaks in the water system connections to the heat exchanger
Plate-type recovery heat exchanger:
•
Proper operation (opening) of the by-pass damper per the recuperator output set point
•
Proper operation of the condensate drain trap (height, filling with water)
8.3
INITIAL PLACEMENT OF THE UNIT INTO SERVICE
Once all the previous points are complete (assembly and installation, activities prior to initial
start-up, etc.), the unit may be placed into test operation:
1)
Connect power - connect the power cord to the receptacle
2)
Activate the unit at the service switch by rotating to the “1” position
