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Page 112 / 146 00BNO9061-J
VARMAX - Installation, Use and Maintenance
E. ELECTRICAL AND HYDRAULIC VALIDATION
On boiler No. 1: master
Line No. Value
• Cascade diagnostic menu
Check that all boilers are present in the cascade
Status of generator 1 (8100) Released / not
released
Status of generator 2 (8101) Released / not
released
...............................
• Input/output test menu
Check the outputs
Alarm relay
Relay test (7700) Relay output QX1
Insulating valve Q1.1
Relay test (7700) Relay output QX3
All relays of extension modules
Relay test (7700) Relay output QX2...
module...
Reset outputs
Relay test (7700) No test
Check sensor values
External sensor B9
External T° B9 (7730) in °C
DHW sensor B3 (diagram VX212)
DHW temperature B3/B8 (7750) in °C
Flow sensor in cascade B10
Sensor T° BX2 (7821) in °C
Flow sensor B1
Temperature sensor BX21 module 1 (7830) in °C
Flow sensor B12
Temperature sensor BX21 module 2 (7832) in °C
Flow sensor B14
Temperature sensor BX21 module 3 (7834) in °C
Diagram VX212 only:
Check the status of contact H1
Status of contact H1 (7841) Closed if the shunt
is in place
• Configuration menu
Check the hydraulic diagram
Generator 1 check (6212) 14
Generator 2 check (6213) 0
Information on DHW (6215) 0
(diagram VX202)
4
(diagram VX212)
Information on heating circuits 3, 2 and 1 (6217) 30303
Diagrams: VX202 / VX212
page 7 / 9
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