Vaillant ecoTEC plus 937 Instructions For Installation And Servicing

ecoTEC plus 937 installation and maintenance manual30
4.19.4 Wiring diagrams
Burner cable harness
Wiring harness hydraulics
Connection for
external eBUS controller
Room thermostat 24 V:
Connection 7, 8 und 9
No bi-directional interface
(only analogue)
Room thermostat 230 V/50 Hz
(Remove bridge when connecting)
Heating pump
2 speed pump (plug with 5 pins)
Mains connection 230 V/50 Hz
Fuse 2 A, slow-acting
Igniter
Attention:
Do not connect
mains voltage
Danger of destroying
the electronics!
Diagnosis via eBUS,
vrnetDIALOG
Accessory module connection
External
sensor
external feed or return
line sensor
Shift load storage tank
pump connection 230 V
Shift load storage tank connection
Shift load storage tank pump connection
Fig. 4.19 Wiring diagram electronics box
4 Sequence of operations during installation

Vaillant ecoTEC plus 937 Specifications

General

Model	ecoTEC plus 937
Category	Boiler
Type	Combination
Output	37 kW
Dimensions	720x440x338 mm
Mounting	Wall-mounted
ERP Efficiency Rating	A
Fuel Type	Natural Gas
Flow Rate	15.2 l/min
Hot Water Flow Rate	15.2 l/min at 35°C temperature rise
Gas Type	Natural Gas
Warranty	5 years
Efficiency	94%
DHW Output	4.0 - 37.0 kW