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Calenta 40c
REMEHA Calenta 40c User Manual
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Netherlands
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High-efficiency wall-hung condensing gas boilers
Calenta 25s - 28c - 35s - 40c
Installation and
Service Manual
7600585-01
2
Table of Contents
Default Chapter
3
Table of Contents
3
Introduction
8
Symbols Used
8
Abbreviations
8
General
8
Manufacturer's Liability
8
Installer's Liability
9
Homologations
9
Certifications
9
Equipment Categories
11
Additional Directives
11
Factory Test
11
Safety Instructions and Recommendations
12
Safety Instructions
12
Recommendations
12
Technical Description
14
General Description
14
Main Parts
14
Operating Principle
15
Gas/Air Setting
15
Combustion
16
Heating and Domestic Hot Water Production
16
Control System
16
Adjustment
16
Regulation of the Water Temperature
17
Protection against a Shortage of Water
17
Maximum Temperature Protection
17
Skeleton Diagrams
18
Shunt Pump
18
Water Flow Rate
19
Technical Specifications
19
Installation
22
Regulations Governing Installation
22
Package List
22
Standard Delivery
22
Accessories
23
Choice of the Location
24
Data Plate
24
Location of the Boiler
24
Ventilation
25
Main Dimensions
26
Positioning the Boiler
27
Alternatives for Hydraulic Connections
28
Connection of the Underfloor Heating
28
Connection of a Solar Hot Water Tank
28
Connection of an Independent Hot Water Tank
29
Geyser Use
30
Solo Use
31
Hydraulic Connections
31
Flushing the System
31
Connection of the Heating Circuit
32
Hydraulic Connection of the Water Circuit for Domestic Use
33
Connecting the Expansion Vessel
33
Connecting the Condensate Discharge Pipe
33
Gas Connection
34
Connections for the Air and Exhaust Pipes
34
Classification
34
Outlets
35
Lengths of the Air/Flue Gas Pipes
36
Specific Air/Flue Gas Applications
38
Additional Directives
38
Air/Exhaust Adapter
39
Connection of the Combustion Gas Exhaust Pipe
40
Connection of the Air Intake Pipe
40
Electrical Connections
41
Control Unit
41
Recommendations
42
Standard Control PCB
43
Connecting the Room Thermostat
44
Connecting the Outside Temperature Sensor
45
Connect Frost Protection
45
Connecting the Calorifier Sensor/Thermostat
46
Pc/Laptop Connection
47
Shutdown Input
47
Release Input
47
4.10 Optional Electrical Connections
48
Connection Options for the 0-10 V Control PCB (IF-01)
48
Connection Possibilities for the PCB (SCU- S02)
49
4.11 Electrical Diagram
52
4.12 Filling the System
53
Water Treatment
53
Filling the Siphon
53
Filling the System
54
Commissioning
55
Control Panel
55
Functions of the Keys
55
Meaning of the Symbols on the Display
55
Check Points before Commissioning
56
Preparing the Boiler for Commissioning
56
Gas Circuit
57
Hydraulic Circuit
57
Electrical Connections
57
Commissioning the Boiler
57
Gas Settings
59
Adapting to Another Gas Type
59
Setting the Air/Gas Ratio (Full Load)
59
Setting the Air/Gas Ratio (Part Load)
61
Basic Setting for the Gas/Air Ratio
62
Checks and Adjustments after Commissioning
62
Finalizing Work
62
Reading out Measured Values
63
Reading the Various Current Values
63
Readout from the Hour Counter and Percentage of Successful Starts
64
Status and Sub-Status
65
Changing the Settings
66
Parameter Descriptions
66
Modification of the User-Level Parameters
68
Modification of the Installer-Level Parameters
69
Setting the Maximum Heat Input for Central Heating Operation
70
Return to the Factory Settings
71
Carrying out an Auto-Detect
72
Setting the Manual Mode
72
Setting the Legionella Protection Function
72
Switching off the Boiler
73
Installation Shutdown
73
Frost Protection
73
Switching off the Central Heating
74
Shutting down Domestic Hot Water Production
74
Checking and Maintenance
75
Maintenance Message
75
Preventive Maintenance with Automated Service Message
75
Resetting the Automatic Maintenance Message
76
Dealing with the Next Maintenance Message and Starting the New Maintenance Period
76
Standard Inspection and Maintenance Operations
77
Checking the Hydraulic Pressure
77
Checking the Ionization Current
77
Checking the Transfer Capacity
77
Checking the Tightness of the Flue Gas Evacuation and Air Inlet Connections
78
Checking Combustion
78
Checking the Automatic Air Vent
79
Checking the Safety Valve
79
Checking the Siphon
79
Checking the Burner and Cleaning the Heat Exchanger
80
Specific Maintenance Operations
81
Replacing the Ionization/Ignition Electrode
81
Cleaning the Plate Exchanger (Domestic Hot Water End) and the Water Filter Cartridge
81
Replacing the 3-Way Valve
84
Replacing the Non-Return Valve
85
Assembling the Boiler
86
Troubleshooting
87
Error Codes
87
Shutdowns and Lock-Outs
90
Blockage
90
Blocking
90
Error Memory
92
Error Readout Memorised
93
Deletion of the Error Display
94
5
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REMEHA Calenta 40c Specifications
General
Output
40 kW
Fuel Type
Natural Gas
Mounting
Wall-mounted
Max. DHW output
40 kW
Water pressure
1 - 3 bar
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