Warmhaus EWA 2525C - Installation & Service Manual

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CONDENSING COMBI BOILERS

INSTALLATION & SERVICE MANUAL

EWA 2525C 25 kW

EWA 2530C 30 kW

Main Page

Table of Contents5
Introduction6
Boiler Description6
Safety Instructions6
Technical Specification8
Product Identification9
Regulations9
Pre-Installation10
Packing Contents10
Appliance Overview10
Location of Boiler / Clearance11
System Requirements12
General12
Water Supply (Only for Combi Boiler)12
Gas Supply12
By-Pass12
Ventilation12
Primary System Cleaning12
Electric Supply12
PRV Discharge12
Flue Terminal Position13
Installation14
Unpacking Appliance14
Appliance Position14
Wall Mounting Template14
Preparing the Wall - Drill Flue Hole14
Installing Mounting Bracket14
Hanging the Boiler14
Appliance Connections15
Filling Appliance & Adding Inhibitor16
Installation with Horizontal Flue Sets17
Installing the Flue System18
Installation with Vertical Flue Sets (Ø60/100 MM)20
Concentric Flue Kits for Condensing Boilers (Ø60/100 MM)22
Plume Displacement Kits Ø60 MM23
Recommendations of Plume Kit Installation23
Condensate Connection24
Ewa Combi Boiler Wiring Diagram28
External Control Connection / Low Voltage Installation29
External Control Connection / High Voltage (240 V) Installation29
External Control Connection / Splan Wiring Diagram30
External Control Connection / Yplan Wiring Diagram31
Commissioning32
Display Function32
SET Transparent Parameters Menu (TSP)32
Parameters33
Parameter Information38
Service Mode38
CO/CO2 Combustion Check39
Calibration40
Auto Calibration40
Auto Calibration41
FTF Function42
ESF (Easy Start up Function)43
Information Menu Access45
Deaeration Mode46
Ewa Combi Boiler Wall-Hung Boilers DHW Preheat Mode47
Pre-Commissioning Checklist48
Checking Inlet Gas Pressure48
Testing for Gas Leaks During Use48
Check Gas Rate48
Circulation Pump Rotation49
Setting up the External Controls49
Gas Conversion from NG (G20) to LPG (G31)50
Gas Conversion from LPG (G31) to NG (G20)51
Servicing & Part Replacement52
Replacement of Components - First Stage52
Replacement of Components - Final Stage52
Draining the Boiler / CH Circuit52
Draining the Boiler / DHW Circuit (Only for Combi Boilers)52
Flue Thermistor Replacement53
Ignition Electrode Replacement53
Nozzle Replacement53
FLOW & RETURN TEMPERATURE SENSOR Replacement54
Interface PCB Replacement54
Main PCB Replacement54
3-Way Inner Kit Replacement - TOP54
Pump Head Replacement54
Outlet Manifold Replacement55
Water Pressure Sensor Replacement55
Bar Safety Valve Replacement55
DHW Flow Sensor Replacement (for Combi Boilers Only)55
DHW Plate Heat Exchanger Replacement (for Combi Boilers Only)55
Electrode Positioning for 25, 30 Kw & Single Elektrode56
Fault Finding & Solutions58

Warmhaus EWA 2525C - Installation & Service Manual

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