Benchmark Unica 28HE Manuals

Manuals and User Guides for Benchmark Unica 28HE. We have 1 Benchmark Unica 28HE manual available for free PDF download: Installation & Servicing Instructions Manual

Benchmark Unica 28HE Installation & Servicing Instructions Manual (40 pages)

Brand: Benchmark | Category: Boiler | Size: 12 MB

Table of Contents
2
Design Principles & Operating Sequence
5
Principle Components
5
Mode of Operation (at Rest)
5
Mode of Operation (Heating)
5
Mode of Operation (Hot Water)
5
Safety Devices
5
Technical Data Page
6
Central Heating
6
Domestic Hot Water
6
Gas Pressures
6
Expansion Vessel
6
Dimensions
6
Clearances
6
Connections
6
Electrical
6
Flue Details (Concentric)
6
Pump Duty
7
General Requirements (UK)
8
Related Documents
8
Location of Appliance
8
Gas Supply
8
Flue System
8
Air Supply
8
Water Circulation
8
Electrical Supply
9
Mounting on a Combustible Surface
9
Timber Framed Buildings
9
Inhibitors
9
Showers
9
Related Documents
10
Location of Appliance
10
Gas Supply
10
Flue System
10
Air Supply
10
Water Circulation
10
Electrical Supply
11
Mounting on a Combustible Surface
11
Timber Framed Buildings
11
10 Inhibitors
11
11 Showers
11
12 Declaration of Conformity
11
Installation
12
Delivery
12
Contents
12
Unpacking
12
Preparation for Mounting the Appliance
12
Fitting the Flue
12
Connecting the Gas & Water
16
Electrical Connections
17
Commissioning
18
Gas Supply Installation
18
The Heating System
18
Initial Filling of the System
18
Initial Flushing of the System
18
Pre-Operation Checks
18
Initial Lighting
18
Checking Gas Pressure Combustion Analysis
18
Final Flushing of the Heating System
19
Setting the Boiler Operating Temperature
19
Setting the System Design Pressure
19
Regulating the Central Heating System
19
Final Checks
19
Instructing the User
19
General
20
Routine Annual Servicing
20
Replacement of Components
20
Component Removal Procedure
20
Pump Assembly
20
Safety Valve
21
Lower Automatic Air Release Valves
21
Water Pressure Switch
21
Primary Thermistor
21
Return Thermistor
21
Printed Circuit Board
21
Gas Valve
21
Electrodes and Condense Sensor
22
Flue Fan & Mixer
22
Burner
22
Main Heat Exchanger
22
Automatic By-Pass
23
Expansion Vessel
23
Condense Trap Removal
23
Flue Collector Removal
23
Checks, Adjustments and Fault Finding
25
Checking Appliance Operation
25
Appliance Modes of Operation
25
Appliance Fan Speed
26
Checking the CO 2 & Adjusting the Valve
26
Combustion Analysis Test
27
Checking the Expansion Vessel
27
External Faults
27
Electrical Checks
27
Fault Finding
28
Component Values & Characteristics
28
Final Fault Codes
28
Boiler Configuration
28
Wiring Diagrams
29
External Wiring
29
Typical Control Applications
29
Other Devices
29
Vokera Twin-Channel Programmer
29
Exploded Diagrams
31
Table 1
31
Table 2
32
Table 3
33
Table 4
34
Table 5
35
Related Documents
36
Technical Data
36
Converting the Appliance Gas Type
36
Gas Supply
36
Gas Supply Installation
36
Adjusting the Gas Valve
36
Appliance Fan Speed
37
Benchmark
38

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Benchmark Unica 28HE Installation & Servicing Instructions Manual (40 pages)

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