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Hoval SR-plus 500 User Manual

Hoval SR-plus 500
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Issued By TECHNICAL DEPT
Dated: August 2014 Approved KS
Operating and Installation
Instructions for the SR-plus
hot water boiler
0088
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Hoval SR-plus 500 Specifications

General IconGeneral
TypeCondensing Boiler
Heating Capacity500 kW
Fuel TypeNatural Gas / LPG
Operating Pressure6 bar
CategoryCommercial
EfficiencyUp to 98%

Summary

Introduction

Gas Safety, Nameplate & Delivery

Gas Safety (Installation and Use) Regulations '98.

Legal requirements for gas appliance installation and use.

British Gas Publications

List of relevant British Gas publications for installations.

Sample nameplate

Example of the boiler's identification plate details.

Delivery, Offloading & Storage

Instructions for receiving and safely storing the boiler.

Description of the SR-plus boiler

Applications

Intended uses for heating and hot water supply.

General Details

Construction, design, and core features of the boiler.

Benefits & Features

Key advantages and operational benefits of the SR-plus range.

Door Hinging

Information on changing the boiler door hinge orientation.

On request

List of optional features and accessories available.

Insulation / Cladding

Details regarding the boiler's insulation and external cladding.

Operation

How the boiler operates normally and with BMS control.

Electrical Power Supply

Requirements for the boiler's single-phase power supply.

SR-plus Technical & Performance Details

SR-plus 500 - 1500

Technical data for SR-plus boiler models 500 to 1500.

SR-plus 1750 - 4000

Technical data for SR-plus boiler models 1750 to 4000.

SR-plus Technical & Performance Details

Dimensions and Technical Information

Physical dimensions and connection points for models 500-900.

Key

Explanation of numbered components in the boiler diagrams.

SR-Plus Model

Summary of specifications for SR-plus models 500-900.

SR-plus Technical & Performance Details

Dimensions and Technical Information

Physical dimensions and connection points for models 1200-4000.

Key

Explanation of numbered components in the boiler diagrams.

SR-Plus Model

Summary of specifications for SR-plus models 1200-4000.

Space requirements, boiler plant house noise levels

Space Requirements

Guidelines for adequate space around the boiler for access.

Clearances

Specific minimum clearances for boiler installation and maintenance.

Additional points

Important considerations for pipework and boiler casings.

Changing the door hinged side

Procedure for re-hinging the boiler door.

Boiler Plant Noise Levels

Information on noise sources and mitigation measures.

Ventilation, Open Vented & Pressurised Systems

Boilerhouse Ventilation

Requirements for boiler house ventilation systems.

Natural Ventilation - General Guidelines

Principles for natural air flow in boiler rooms.

Air Inlet Requirements

Specifications for required ventilation inlet areas.

Air Supply by Mechanical Ventilation - General Guidelines

Guidelines for using mechanical ventilation systems.

Open Vented Systems

Specific requirements for open vented heating systems.

Pressurised Systems

Specific requirements for independently pressurised systems.

Flues & Chimneys

General Guidelines

Advice on flue sizing and installation for multi-boiler plants.

Fan Dilution Systems - General Guidelines

Guidelines for using fan dilution systems where conventional flues are impractical.

Chimney sizes and height will need to take into account the following:

Key considerations for determining chimney size and height.

Filling the System

Recommendation

Advice on filling systems with treated water.

Check the following:

Checklist for system filling procedures.

Water treatment

Necessity and methods of water treatment for heating systems.

Fitting the Burner

Burner matching

Selecting CE-approved burners according to directives.

Fitting the Burner

Step-by-step instructions for installing the burner.

Dual fuel burners - important note

Specific considerations for dual fuel burner installations.

Sealing of the burner draught tube

Procedure for sealing the draught tube gap.

Acoustic Shrouds

Information on fitting optional acoustic shrouds.

Fire Sensor for gas or oil burners

Correct location for the fire sensor.

Water flow & return temperatures

Guidelines for setting water flow and return temperatures.

Control Details

Key

Explanation of components on the boiler control panel.

Burner control circuit switch:

Operation of the burner control ON/OFF switch.

Limit thermostat:

Setting and function of the safety limit thermostat.

Control thermostat:

Setting and function of the main control thermostat.

High temperature cut out light

Indication and reset procedure for high temperature cutout.

Burner lockout light:

Indication and reset procedure for burner lockout.

Terminals

Information on terminals for external interlocks.

Installation - Gas Boosters

Important

Crucial advice regarding standby gas booster installation.

Booster Installation

General recommendations for booster placement and installation.

NOTE: Flexible piping should be examined

Advice on inspecting flexible piping for boosters.

NOTE :- If a gas booster is located in a meter/governor room

Safety requirements for boosters in specific hazardous zones.

Commissioning

Commissioning

commissioning is in accordance with burner makers requirements.

Ensuring compliance with burner manufacturer requirements.

Commissioning Report

Information on the commissioning report provided to customers.

Operating Instructions

PLEASE READ: Important Notes for the Boiler Attendant

Essential information and notes for boiler operators.

Instruments and Controls

Location and function of boiler instruments and controls.

The basic controls for any boiler will be:-

Description of core control functions like sequence box and thermostats.

Sequencing of boilers under BMS control.

Managing multiple boilers under a BMS control system.

Starting up after cleaning the boiler or a Summer shut down.

Procedures for starting up after cleaning or summer shutdown.

Normal Running

How the boiler operates during normal heating cycles.

Maintenance - Inspection & Servicing

Periodic Inspection

Regular checks to be performed between main services.

Maintenance - Boiler & Burner Servicing

Boiler Cleaning for Heating Surface

Instructions for cleaning boiler heating surfaces.

Maintenance - Summer shut down

Summer Shut Down

Thorough cleaning of the boiler interior before long periods of inactivity.

Maintenance - Burners

Burner Maintenance

Safety precautions and procedures for burner maintenance.

Fuel

Correct fuel types for the burner as per nameplate.

Emergency Stop

How to use the emergency stop function.

Motor

Cleaning and lubrication of the burner motor.

Fan Runner

Maintenance of the fan runner blades.

Nozzles, Flame Plate and Electrodes

Operator-limited maintenance for these burner components.

Flame Sensor

Cleaning and inspection of the flame sensor.

Oil Burner Fault Finding Chart

Symptom A. Burner will not start

Steps to diagnose and fix a burner that fails to start.

Symptom C. Burner lights but rapidly extinguishes.

Steps to diagnose and fix rapid burner extinction.

Oil Burner Fault Finding Chart / 2

Gas Burner Fault Finding Chart

Symptom A. Burner will not start

Steps to diagnose and fix a gas burner that fails to start.

Symptom C. Burner motor starts but stops and re-cycles.

Steps to diagnose and fix burner motor cycling issues.

Symptom D. Burner shuts down during operation and recycles.

Steps to diagnose and fix burner shutdown and recycle issues.

Symptom E. Burner shuts down during operation and goes to 'lockout'.

Steps to diagnose and fix gas burner shutdown lockout.

Gas Burner Fault Finding Chart / 2

Symptoms G. Smell of gas local to the appliance.

Steps to diagnose and fix gas leaks.

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