Multi Connection; Pump Modulation Connection - Viessmann Vitocrossal 300 CU3A 26 Installation Instructions Manual
Floor mounted, gas-fired condensing boiler with matrix gas burner and lambda pro control
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Also See for Vitocrossal 300 CU3A 26:
- Technical data manual (33 pages) ,
- Service instructions manual (116 pages) ,
- Operating instructions manual (44 pages)
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Control Connections
Connections
(continued)
Legend
Multi connection
Note: See wiring diagram on page 53 for connection
to the control base.
38
Multi connection
Normally closed safety connection A.
Remove jumper (not shown) to install a field supplied
normally closed relay.
The relay must be rated for 120VAC 5 FLA
Power/Pump connection interface
Power/pump connection interface
A
Vitocrossal 300 CU3A 26 to 199 Installation
IMPORTANT
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