Hamworthy Milborne 500, Milborne MB 501, Milborne MB 502 Design Installation, Commissioning And Operating Instructions

Download

MILBORNE 500 SERIES

BOILERS

Wall Hung, Pre-Mix, Condensing,

Modular Boilers

Design Installation, Commissioning

and Operating Instructions

NATURAL GAS

LPG - PROPANE

IMPORTANT NOTE

THESE INSTRUCTIONS MUST BE READ

AND UNDERSTOOD BEFORE INSTALLING,

COMMISSIONING, OPERATING OR

SERVICING EQUIPMENT

Technical Enquiries 01202 662527/662528

To supplement the detailed technical brochures, technical advice on the application and use of products in the Hamworthy Heating range is available from our technical team in Poole and our accredited agents.

Site Assembly 01202 662555

Hamworthy offer a service of site assembly for many of our products in instances where plant room area is restricted. Using our trained staff we offer a higher quality of build and assurance of a boiler built and tested by the manufacturer.

Commissioning 01202 662555

Commissioning of equipment by our own engineers, accredited agents or specialist sub – contractors will ensure the equipment is operating safely and efficiently.

Maintenance Agreements 01202 662555

Regular routine servicing of equipment by Hamworthy service engineers inspects the safety and integrity of the plant, reducing the risk of failure and improving performance and efficiency. Maintenance agreements enable our customers to plan and budget more efficiently.

Breakdown service, repair, replacement 01202 662555

Hamworthy provide a rapid response breakdown, repair or replacement service through head office at Poole and accredited agents throughout the UK.

Spare Parts 01202 662525

A comprehensive spare parts service is operated from our factory in Poole, providing replacement parts for both current and discontinued products. Delivery of parts and components is normally from stock within seven days. However, a next day delivery service is available for breakdowns and emergencies.

Customer Services

MILBORNE 500 SERIES

BOILERS

Wall Hung, Pre-Mix, Condensing,

Modular Boilers

Design Installation, Commissioning

and Operating Instructions

NATURAL GAS

LPG - PROPANE

NOTE: THESE INSTRUCTIONS SHOULD BE READ AND UNDERSTOOD BEFORE ATTEMPTING TO INSTALL, COMMISSION OR OPERATE THIS UNIT

PUBLICATION NO. 500001130 ISSUE ‘A’ JUNE 2005

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

CONTENTS

PAGE

1.0 INTRODUCTION ............................................................................................................................... 1

2.0 TECHNICAL FEATURES.................................................................................................................. 2

3.0 CONSTRUCTION DETAILS & DIMENSIONS .................................................................................. 3

4.0 CONTROLS PHILOSOPHY .............................................................................................................. 4

5.0 INSTALLER INSTRUCTIONS .......................................................................................................... 5

6.0 CONDENSATE DISCHARGE ........................................................................................................... 6

7.0 PIPEWORK CONNECTIONS, MANIFOLD KITS, PUMP SELECTION............................................ 7

8.0 FLUE SYSTEM................................................................................................................................ 11

9.0 VENTILATION ................................................................................................................................. 16

10.0 GAS SUPPLY.................................................................................................................................. 18

11.0 POWER SUPPLY AND WIRING..................................................................................................... 18

12.0 EMERGENCY MODE ...................................................................................................................... 23

13.0 SET-UP FOR MODULAR MILBORNE INSTALLATIONS.............................................................. 24

14.0 PROGRAMMABLE ROOM THERMOSTAT ................................................................................... 27

15.0 COMMISSIONING........................................................................................................................... 29

16.0 MASTER CONTROL PANEL ERROR MESSAGES ...................................................................... 33

17.0 MASTER CONTROL PANEL DESCRIPTION ................................................................................ 37

18.0 USER’S PARAMETER MODIFICATION ........................................................................................ 38

19.0 PROGRAMMING MODE ................................................................................................................. 41

20.0 PROPANE (LPG) ............................................................................................................................ 51

21.0 CONVERTING FROM NATURAL GAS TO LPG............................................................................ 51

22.0 TECHNICAL DATA TABLES.......................................................................................................... 54

23.0 OPTIONS AND KITS....................................................................................................................... 55

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

PICTORIAL AND DIAGRAMATICAL DATA

FIGURES PAGE

Figure 3.1 Basic Dimensions...................................................................................................................... 3

Figure 5.1 Unpacking the Boiler.................................................................................................................. 5

Figure 6.1 Condensate Discharge .............................................................................................................. 6

Figure 6.2 Condensate Discharge .............................................................................................................. 6

Figure 7.1 Pipework Schematic No. 1......................................................................................................... 7

Figure 7.2 Pipework Schematic No. 2......................................................................................................... 8

Figure 7.3 Single Milborne 502 Pipework Kit ............................................................................................... 9

Figure 7.4 2 x Milborne 502 Pipework Kit .................................................................................................... 9

Figure 7.5 Flow Resistance Graph............................................................................................................ 10

Figure 8.1 Single Milborne 501 Flue Installation......................................................................................... 11

Figure 8.2 Single Milborne 502 Flue Installation......................................................................................... 11

Figure 8.3 Twin Pipe Flue Adaptation Kit................................................................................................... 12

Figure 8.4 Flue Manifold........................................................................................................................... 12

Figure 8.5 Typical Flue Placement Options ............................................................................................... 13

Figure 11.1 External Device Circuit............................................................................................................. 19

Figure 11.2 Pump Wiring Diagram.............................................................................................................. 20

Figure 11.3 Connections to an External Alarm............................................................................................. 20

Figure 11.4 Interlock Circuits ...................................................................................................................... 21

Figure 11.5 Milborne 502 Master - Wiring Diagram...................................................................................... 21

Figure 11.6 Milborne 502 Slave - Wiring Diagram........................................................................................ 22

Figure 12.1 Master Card Emergency Enable............................................................................................... 23

Figure 12.2 Master Card Emergency Enable............................................................................................... 23

Figure 12.3 Master Card Emergency Enable............................................................................................... 23

Figure 13.1 Milborne Multiple Installation..................................................................................................... 24

Figure 13.2 Setting Jumpers, Typical Example............................................................................................ 25

Figure 13.3 Example of Boiler Installation, 7 boiler Modules in same Cascade Sequence.............................. 26

Figure 13.4 Setting Up / Positioning of Room Thermostats .......................................................................... 27

Figure 15.1 Gas Valve Adjustment Points................................................................................................... 29

Figure 15.2 Gas Inlet Pressure Test Point................................................................................................... 30

Figure 15.3.1 Analysis Point.......................................................................................................................... 30

Figure 15.3.2 LPG Flow Adjustment.............................................................................................................. 30

Figure 15.3.3 Starting the Boiler .................................................................................................................... 30

Figure 15.3.4 Control Panel Modules............................................................................................................ 31

Figure 15.3.5 Master Control Panel Controls, General Overview..................................................................... 31

Figure 15.3.6 LED Positions.......................................................................................................................... 31

Figure 15.3.8 Air Flow Adjustment................................................................................................................. 32

Figure 15.3.11 Gas Flow Adjustment............................................................................................................... 32

Figure 17.1 Control Panel Overview ........................................................................................................... 36

Figure 18.1 Changing Operating Temperature Set-Points............................................................................ 38

Figure 18.2 Entering into Monitor Mode ...................................................................................................... 39

Figure 18.3 User Level Parameters ............................................................................................................ 40

Figure 19.1 Programming Mode / Parameter Lists....................................................................................... 41

Figure 21.2 Gas Valve Air Inlet Positions .................................................................................................... 51

Figure 21.3 Venturi / Gas Valve Positions ................................................................................................... 52

Figure 21.4 Removing Venturi from Gas Valve............................................................................................ 52

Figure 21.5 Venturi Separated.................................................................................................................... 52

Figure 21.6 LPG Orifice Location................................................................................................................ 52

Figure 21.7 LPG Orifice Fitted .................................................................................................................... 52

Figure 21.8 LPG Orifice Options................................................................................................................. 53

HAMWORTHY HEATING LTD

iii

MILBORNE 500 SERIES

500001130/A

TABLES

Table 9.1 Air Flow Table for Restricted Space Installations .................................................................. 16

Table 9.2 Air Flow Table for Restricted Space Installations .................................................................. 16

Table 20.1 Technical Table LPG Firing ................................................................................................... 51

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

1.0 Introduction

The Milborne 500 series is a range of wall hung boilers comprising 1 or 2 50kW boiler modules within a single casing. Having a comprehensive built-in controls package the boiler is particularly suited to installations that do not have a dedicated controls installation.

Where larger installations require more power than a single boiler can produce then multiple boilers may be installed in a modular arrangement. Supplied from the factory as fully assembled units, the boilers are set up for either natural gas or for LPG prior to delivery. Where required a modification may be made on site to change from one gas to another.

Installation

In order to ensure safety and correct operation, the installation shall always take place in full compliance with the applicable Law and with the instructions provided by the Manufacturer, and will always be carried out by professionally qualified technical personnel only. The equipment shall be installed in a suitable area, and connected to the heating system in accordance with the applicable Law.

Regulations

The following British Standard Codes of Practice and Regulations have relevant recommendations regarding the installation of Milborne boilers.

CR331.3 Low pressure installation pipes.

BS.5449.1 Forced circulation hot water systems

BS.5446 Installation of gas hot water supplies for domestic purposes

BS.5440.1 Flues (for gas appliances of rated input not exceeding 60kW)

BS.5440.2 Air supply (for gas appliances of rated input not exceeding 60kW)

BS.6798 Boilers of rated input not exceeding 60kW

BS.6644 Installation of Gas Fired Hot Water Boilers 60kW – 2MW

BS.6700 Design, installation, testing and

maintenance of services supplying water for domestic use

BS.6880.1,2 & 3 Code of practice for low

temperature hot water heating systems of output greater than

45kW

BS.7074.1&2 Application, selection and

installation of expansion vessels and ancilliary equipment for sealed water systems. Code of practice for low and medium temperature hot water systems

I. Gas E. Publications

IGE/UP/1 Soundness testing and purging of industrial and commercial gas installations

IGE/UP/1A Soundness testing and direct

purging of small low pressure industrial and commercial natural gas installations

IGE/UP/2 Gas installation pipework,

boosters and compressors in industrial and commercial premises

IGE/UP/10 Installation of gas appliances in

industrial and commercial premises Pt1 flued appliances

Health and safety executive

Guidance note PM5 Automatically controlled steam and hot water boilers

Warranty

Full warranty assistance will be ensured when the appliance is commissioned by Hamworthy Heating Ltd commissioning engineers, please see Terms and Conditions for full details.

The Manufacturer disclaims any and all responsibility resulting from damage due to tampering, improper use or mistakes made during equipment installation, operation and maintenance. In the event of failure or breakdown, isolate the equipment and do not try to repair it. Call the Technical Support Service tel 0845 450 2866.

Start-Up

The boiler shall be switched on for the first time by approved Corgi registered engineers only. During start-up, the engineer shall complete the commissioning certificate and leave you a copy, thus starting the warranty period, whose conditions are specified in the Terms and Conditions available on request.

Installation and User Manual

This manual shall be read carefully, in order to use the boiler correctly and safely, and shall always be kept safely.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

2.0 Technical Features

Milborne 501/502 is a wall-mounted, modular, condensing, pre-mixed and blown boiler assembly, consisting of one (Milborne 501) or two (Milborne

502) boilers installed within one casing.

The useful power of each Boiler element reaches

48.50 kW (100%, 50°C-30°C) and is modulating from 30% to 100%. The efficiency of each generator reaches 108.6% (nett) in relation to the lower heating power of natural gas (Hi); thanks to the low temperatures of flue gas, an integrated flue gas collector entirely in plastic can be used, having a 50mm diameter and a glass-shaped connection, which can reach a height of 30 metres.

Milborne boiler assembly series 500 is a great achievement as regards control, cost-effectiveness, reliability, and flexibility. Indeed, thanks to the latest generation electronic management, modularity and versatility that characterise this product. This boiler can be rapidly connected to any type of heating system including systems for the production of domestic hot water, simultaneously managing three different systems operating at three different temperatures.

Milborne 501/502 is fitted with an electronic management system, making it possible to combine several boiler assemblies in cascade, to create boiler installations which can reach an installed power exceeding 3000 kW.

Individual Boilers can be installed in cascade, besides applying the traditional lead boiler rotation, by means of a variable load factor, so that when the first unit reaches a certain power percentage (e.g. 30%), the following units starts (unison control), all with the same load factor.

This makes it possible to divide supplied power onto several heat exchangers with a power: heat exchanger surface ratio which is particularly useful to exploit latent condensation heat.

The Milborne boiler offers the following main advantages:

◊ Total pre-mixing blown air burner. ◊ Condensing heat exchanger with efficiency up

to 109%.

◊ Power from 10 to 100 kW (Single Milborne 502). ◊ Flue gas maximum temperature 80°C ◊ Ø50 mm flue gas pipe up to 30m equivalent

length per boiler module.

◊ Standard condensate discharge system in the

boiler.

◊ Fast connection of water, condensate and gas

using optional pipework header kits, with left or right hand connections.

◊ Serial connection of E buses between the

various boiler modules and the Master control panel.

◊ Standard outside weather compensation for

high and low CH circuits.

◊ Control of mixing valve for low temperature CH

circuit.

◊ Modulating and sequential regulation of the

power of individual boilers.

◊ Automatic rotation of lead boiler. ◊ Selection of the burner’s modulation rate within

a cascade control.

◊ Management of domestic hot water and circuits

at different temperatures, with or without operation priority.

◊ Automatic summer/winter switchover. ◊ Anti-Legionella function (remote control only) ◊ Weekly switch-on time setting (remote control

only)

◊ Priority setting of 3rd pump as either primary or

low temperature CH pump.

(1) See paragraph ‘flue gas exhaust’ (2) Each 90° bend in the piping reduces the

exhaust pipe maximum length by 2 metres.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

3.0 Construction Details

0380

Milborne 501 and Milborne 502 Boiler assemblies have one or two boilers inside the metal cabinet respectively.

Each Boiler is connected to the hydraulic system and the gas supply in parallel (reverse return) to the others and consists of the following main components:

◊ Two-way motorised isolation valve. ◊ Heat exchanger. ◊ Pre-mixing burner assembly. ◊ Control and management Slave card. ◊ Safety controls. ◊ 50 mm polypropylene flue gas exhaust

pipe.

Each Milborne 500 Series boiler can be combined, in series, with other similar boilers, to create modular boiler installations where the various boilers are managed by one single Master control, which can be installed on any of the boiler assemblies making up the installation.

1. High-efficiency burner and 50 kW heat exchanger fitted with bi-metal corrugated internal coil.

- Water side: Copper.

- Flue gas side: stainless steel.

The micro-flame burner is located high, at the centre of the exchanger, and is a grid type, with one combined ignition electrode and flame probe.

2. Pre-mixing unit consisting of a modulating gas valve integrated with a high head fan. The system ensures a constant mixing ratio in all operating conditions, and flue gas discharge through a plastic (PP) exhaust pipe, up to 30 metres equivalent length.

3. Digital Master control panel. The panel includes several adjustment functions and is equipped with a double display, which, depending on circumstances, shows either the operation status or the error codes related to the most common failures.

4. The Master / Slave adjustment system is located behind the front panel. It consists of a master control unit that manages on (Milborne

501) or two (Milborne 502) Slave0type control units. Each slave card controls the operation of the individual boiler to which it is connected. The Master card can manage up to 60 Slave cards and is set for tele-management, temperature regulation and remote control.

1000

Figure 3.1 - Basic Dimensions

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

4.0 Controls Philosophy

The Milborne 500 series boiler is supplied with a sophisticated integrated control system. This system works with the Master and Slave principle of control allowing several boilers to be installed all operating from one control system.

The Master boiler is available as either the Milborne 501 or the Milborne 502. Each Master boiler is equipped with a digital control panel as the user interface and heating controller.

Additional Slave boilers are available as Milborne 502 models allowing combinations using one Master boiler to be assembled as modular installations.

Boiler sequencing is commanded from the Master boiler with lead boiler rotation based on hours run. Each Master boiler is supplied with a temperature sensor for fitting in the common flow pipework. This must be positioned after the last boiler connection in a cascade arrangement on the flow pipework closest to the heating circuits.

Summer shutdown is based on outside air temperature measured from the outside air temperature sensor supplied with each Master boiler. An adjustable parameter allows setting for the outside temperature at which the heating circuits are disabled.

Frost protection is also facilitated from the outside air temperature sensor. Stage 1 will start the primary pump, or the high temperature heating circuit pump where a primary pump is not used. Stage 2 will enable the boilers based on water temperature within the heating circuit at a temperature configured in the parameter settings.

Weather compensation is available for the heating circuits based on outside air temperature and a common curve. Each heating circuit can be offset from this curve by setting the maximum and minimum water temperatures in the parameters.

From the Master boiler it is possible to control 2 heating circuits and a DHW circuit. The heating circuits are designated as high temperature heating circuit and low temperature heating circuit. The latter incorporates control outputs for both the pump and a mixing valve whilst the high temperature circuit and DHW circuit have only outputs for pump control.

All 3 circuits can be set in the parameters to operate at different temperatures. The low temperature heating and DHW circuits have additional optional sensors for control of water temperature.

DHW can be set in the parameters to operate with traditional calorifiers or plate heat exchangers using voltage free switching thermostats.

Where the heating circuits are controlled from the Master boiler control panel and not all three secondary heating circuits are installed, the unused circuits can be disabled in the parameter settings.

Pump designation

A maximum of 3 pumps can be controlled from the Master boiler. Should a primary pump be required for a primary circuit, then pump 3, normally used for the low temperature heating circuit, must be redesignated in the parameter settings as a primary pump. The secondary circuit capability of the boiler is then restricted to DHW and high temperature heating.

However the high temperature heating circuit can be set to operate at condensing low temperatures and use weather compensated flow temperature.

Pump control.

When using weather compensated heating circuits with DHW the pumps are controlled in the following manner.

When there is a DHW demand requiring higher primary temperatures the pump for the high temperature heating circuit is switched off. For the low temperature heating circuit the pump remains running whilst the mixing valve is modulated to prevent higher temperature water entering the circuit.

At the end of the DHW demand the DHW pump is switched off and the high temperature heating circuit pump switched on again. The low temperature heating circuit mixing valve is re-modulated to suit the new primary water temperature. Primary water temperature is set to the higher of the two heating circuit requirements.

When only one circuit requires heat the primary water temperature is set to the requirement of that circuit.

Pump over-run

A separate adjustable parameter is provided for all three pumps to facilitate pump over-run. This will remove residual heat from the boiler when the last circuit is signalled off by the relevant time clock or thermostat.

These parameters are set as part of the commissioning procedure and can be adjusted between 0 and 255 minutes.

Temperature control

Whilst the maximum and minimum settings for the heating circuits are set by the parameters at

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

commissioning, the user can alter the operating setpoints within these limits via the Master control

panel.

Parameter settings are fixed during commissioning and cannot be altered by the user.

Time clock control

Time clock control can be provided by time clocks in series with volt free switching room thermostats, or, programmable room thermostats utilising volt free switching contacts to the Master boiler. A separate time signal is required for each of the heating circuits. Domestic hot water can be time controlled using a time clock in series with a volt free switching cylinder thermostat.

Alternatively the Master boiler can be enabled from a BMS using a 0-10 V analog input. In these circumstances it is anticipated that the BMS will control all secondary circuit functions.

5.0 Installation Instructions

Packing and Product Identification

Milborne series 500 heat generators are supplied on pallets, packed and protected with strapped cardboard.

It is important immediately to check for product integrity and correspondence with the order.

Product features are specified on the outer part of the packing: model, power, version, and fuel type.

Should the product not match with the order, immediately contact customer services at Hamworthy Heating Ltd.

Location

Milborne series 500 Boiler assemblies shall be installed in accordance with the most recent applicable standards and technical regulations on boiler installations and condensing boilers, as with any other boiler installation.

Wall-mounting

The boiler must be installed on a solid masonry wall by means of hooks supplied with the boiler, inside the packing. The hooks position ensuring correct boiler installation can be determined using the cardboard template to be found in the packing.

◊ Place the template supplied with the boiler on the

wall, at a height of approximately 140 cm from the ground, using a spirit level to ensure that the mounting holes are perfectly horizontal.

◊ Secure the template on the wall temporarily and

mark the boiler’s mounting holes on the wall

◊ Drill the holes and install the screw anchors

supplied with the boiler.

Health and safety. Care must be taken when lifting the boiler to its securing hooks. The weights are given in the technical table at the rear of this manual.

Warning: Milborne Series 500 boiler assemblies must not be installed outdoors.

Note.

When installing multiple boilers the Master boiler must be placed closest to the heating system to allow correct location for the common flow temperature sensor.

Figure 5.1 - Unpacking the boiler.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

6.0 Condensate Connection

The condensate water produced by boiler assembly Milborne 501/2 during its normal operation shall be discharged at atmospheric pressure, i.e. by dripping into a tundish or siphon-shaped container connected as described in the following procedure:

Condensate

discharge

pipe

a) Install a tundish or drip pan under the

condensate discharge system (see position on installation template).

b) Connect the tundish to the sewage system by

means of a ‘U’ bend.

c) Install a condensate acid neutraliser if

required by the applicable laws.

The tundish (or drip pan) shall be created and installed in accordance with the applicable technical

Min. Distance

standards.

Condensate Trap

Slope away from system 3%

Figure 6.1—Condensate Discharge

Plastic polypropylene pipes should be used to create the condensate discharge system as the acidity in the condensate will rapidly corrode metal pipes. Never use copper pipes.

Flue system condensate discharge piping

Should it be necessary to extend the vertical or the horizontal section of the discharge piping to over 4 metres, create a ‘U’ bend at the foot of the pipe. The siphon’s useful length must be at least 300 mm. The ‘U’ bend discharge shall then be connected to the drainage / sewage system.

Using the condensate discharge kit, HHL Part No. 573407110, detailed in the flue system section, to make an easy connection to the flue system for condensate removal.

Condensate maximum production rate (50°C - 30° C) 100% output rate.

Fig 6.2

Milborne 501……….7.2 Kg / h (l/h) Milborne 502……….14.4 Kg / h (l/h)

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

7.0 Pipework Connection

System Cleaning

This preventive measure is absolutely required whenever a heat generator needs to be replaced in existing systems, but it is in any case recommended also on new systems, in order to remove any waste, dirt, working residues, etc.

To clean the system, if the old generator is still present in the system, it is advisable to:

◊ Add a descaling solution, such as FERNOX

Superfloc at 2% concentration to the system water volume.

◊ Have the system operate with the circulating

pump for approximately 7 days.

◊ Discharge the system’s dirty water and wash

once or several times using clean water. If the system is very dirty, repeat the last procedure until clean.

Pump the water + additive through the system for approximately 7 days and perform a final wash as described in the previous paragraph.

At the end of cleaning operations, before installing the boiler, it is advisable to add corrosion inhibitor FERNOX MB-1 AT 4% concentration to the system water volume

Example of a Milborne installation using a primary circuit with domestic hot water and single heating circuit.

* See note below Pipework Schematic No. 2 regarding pump control

Figure 7.1 - Pipework Schematic No. 1

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Example of a Milborne installation using domestic hot water with high temperature and low temperature heating circuits.

* See note below regarding pump control

Figure 7.2 - Pipework Schematic No. 1

* The Milborne boiler has the facility to start and control 3 pumps.

It is therefore important when designing the heating system to allow pump number 3 to be assigned as the boiler primary pump where required (see pipework schematic 1). In all other installations pump 3 will be assigned as the low temperature heating circuit pump (see pipework schematic 2). Therefore where a primary system pump is required the control system will not support a low temperature mixing circuit.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Hydraulic Connections

Figure 7.3 & 7.4 show the hydraulic connections and their size and type.

To make hydraulic connections easier, two kits are available: one for the installation of one single Milborne 502, figure 7.3, the other for the installation of two Milbornes series 500 as a set, figure 7.4.

Kit for a Single Milborne 502 (up to 100kW)

Hamworthy kit ref. PKS502, HHL Part No 573407124, Fig 7.3.

Comprising of;

1 x gas header, diameter 50 mm. 1 x flow header, diameter 50 mm. 1 x return header, diameter 50 mm.

Each header is fitted with 2 x 25 mm branch pipe connections for flow and return and 2 x 19 mm for gas connections to each boiler is made using isolating valves, and for the flow connections a 3 port isolation vent valve.

Optional wall support brackets as shown.

Figure 7.3 - Single Milborne 502

Kit for two Milborne 502 boilers installed in series (up to 600 kW)

Hamworthy kit ref PKD502, HHL Part No. 573407125, Fig 7.4

1 x gas header, diameter 3” PN6 1 x flow header, diameter 3” PN6 1 x return header, diameter 3” PN6

Each header is fitted with a 4 x 25 mm branch pipe connections for flow and return and 4 x 19 mm gas connections to each boiler unit. Final connection to the boiler is made using isolating valves, and for the flow connections a 3 port isolation vent valve.

Standard wall support brackets as shown.

Figure 7.4 - 2 x Milborne 502

Note: When Installing multiple boilers the Master Boiler must be placed closest to the heating system to allow correct location for the common flow temperature sensor.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Safety valve

Each 50kW boiler module is supplied with a fitted safety valve rated at 6 barg. This ¾” valve is piped to the bottom of the boiler module where it must be piped to discharge via a tundish (not supplied). The discharge should be in an obvious position to alert the responsible person of a problem.

System Pump Size

The pump is not an integral part of the boiler. Consequently, its size should be chosen considering the features of the Boiler assembly and of the system to be fed.

To help choose the correct pump, figure 7.5 shows the curve of flow resistance values inside the boiler.

Pump Type

Pumps should be of the electronic constant pressure type. This will ensure that as boiler modules are turned off and the individual motorised isolating valves close, flow rates for the remaining modules are maintained.

Alternatively a fixed speed pump with flat curve characteristics may be used.

Maximum Operating Pressure

The boiler’s maximum operating pressure is 6 bar, its minimum operating pressure is 0.5 bar.

Boiler Filling and Draining

The boiler should be filled using the system quick fill connection. This connection must be removed after filling. The boiler should be drained using the relevant drain valves fitted to the boiler or system.

Flow rate requirements

As a condensing boiler the Milborne is designed for operation at 20°C differential temperatures. Should the flow rate drop the boiler will recognise the change in differential temperature and modulate the burner to maintain 20°C differential. It is therefore important to size the pumps based on a flow rate of

0.6 l/sec (2160 l/hr) per 50kW boiler module plus an allowance for system resistance.

MILBORNE 501

Figure 7.5 - Flow Resistance Graph

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

8.0 Flue Gas System

Available for the following flue types

B23 Conventional open flue system drawing combustion air from the room the boiler is installed within.

C63 Room sealed, twin duct, using separately approved flue components for the air supply and flue discharge.

Note: Balanced flues using concentric ducts are not available or approved for this boiler.

Each heat generator (module) inside boiler assemblies Milborne 501/502 has been validated equipped with a self-extinguishing polypropylene flue gas exhaust system (1) with glass-shaped connections.

As for the air supply system, since boiler assemblies Milborne 501/502 have been validated as type B or type C assemblies, air can be taken directly from the boiler room through specific vacuum pipes (2).

Flue systems must be designed and installed in accordance with the requirements of the relevant standard:

BS5440 for single Milborne 501 installations BS6644 for single Milborne 502 and multiple boiler installations

Flue Maximum Length.

Each 50 mm flue pipe maximum equivalent length is 30 metres with a maximum 4 metre flow resistance for each 90° bend and 3 metres for a 45° bend.

Open Flue Installations type B23

Figure 8.1 shows the configuration of a single Milborne 501 boiler installation using the B23 open

Milborne 501

flue arrangement. In this application combustion air is taken directly from the boiler house.

Figure 8.1 - Single Milborne 501 Flue Installation. Related Standard BS5440 Part 1

Figure 8.2 shows the configuration of a single Milborne 502 boiler installation using the B23 open flue arrangement. In this application combustion air is taken directly from the boiler house.

For B23 type open flue arrangements with air intake from boiler house the maximum equivalent flue length of 30 metres includes only the flue pipe.

Milborne 502

Note: Consideration must be made for the prevention of condensate from freezing within the condensate trap at the base of the flue. Locating the condensate discharge kit to the horizontal flue section within the building may provide a suitable solution.

Figure 8.2 - Single Milborne 502 Flue Installation. Related standard BS6644

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Room Sealed Flue Installations Type C63

Figure 8.3 shows the twin pipe flue adaptation kit fitted to a Milborne 502 boiler. This allows the air supply and the flue to be piped using separate ducts for room sealed applications.

It is most important that horizontal flue terminals are

Figure 8.3

positioned at least to the minimum requirements, as shown in Figure 8.5, from other features of the building , i.e. opening windows etc.

Air supply inlets must be positioned at least 300 mm from flue terminals to prevent flue gas recirculation.

We recommend that flue terminals are discharged higher than air inlets.

For C53 twin type pipe installations the maximum equivalent length of 30 metres includes both the requirements for the air inlet pipe and flue pipe.

To comply with the requirements of the Clean Air Act 1956 a maximum of three (3) 50 kW modules may be terminated with horizontal flue discharges.

Connection to a Flue Gas Header

The design of the flue system for the installation of several Milborne 500 Series boilers will be easier if a 125 mm diameter, polypropylene flue gas header with male / female connections is used.

The header is designed to collect the flue gas from the two 50 mm flue pipes of a Milborne 502, each of which contains a flue gas nonreturn valve.

When using the flue gas header for up to three (3) boiler assemblies connected in series, the minimum distance required between the assemblies (150 mm) must be complied with; see figure 8.4.

In this way, the male end of one of the two headers will connect more readily to the female connection of the adjacent header.

Note: When using the 125 mm diameter flue header the maximum number of 50kW modules acceptable in a single flue system is six (6), or 3 x 502 models.

Maximum equivalt flue length when using the 125 mm diameter flue header with 6 x 50kW modules remains at 30 metres, with a 4 metres reduction for each 90° bend in the flue system and 3 metres for each 45° elbow.

Maximum pressure available at flue connection to an individual 50 kW module is

0.7 kPa (7 mbar)

Figure 8.4

Note: Air supply ducts must not be connected together when using room sealed applications. Only individual air ducts for each module are acceptable.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Flue Terminal Locations

The diagram below details the minimum spacing requirements for flue terminals from other building features when using horizontal flue terminals with C63 twin pipe flue systems.

It is recommended that air supply inlet terminals are positioned no closer than 300mm to any flue terminal when using C63 twin pipe flue systems. Air supply inlets should preferably be positioned lower than flue terminals.

Figure 8.5

Note: Flue Installation should comply with BS5440 Part 1

Dim Terminal Position Min Dis

(mm)

A Directly below an opening, air brick, opening window etc 300

B Above an opening, air brick, opening window etc 300

C Horizontally to an opening, air brick, opening window etc 300

D Below gutters, soil pipes or drain pipes 75

E Below eaves 200

F Below balconies or car port roof 200

G From a vertical drain pipe or soil pipe 150

H From an internal or external corner 300

I Above ground roof or balcony level 300

J From a surface facing the terminal 600

K From a terminal facing the terminal 1200

L From an opening in the car port (e.g. door, window) into the dwelling 1200

M Vertically from a terminal on the same wall 1500

N Horizontally from a terminal on the same wall 300

O From the wall on which the terminal is mounted N/A

P From a vertical structure on the roof N/A

Q Above intersection with roof N/A

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Components for Individual Flues per 50kW Boiler Module

50 mm diameter flue components for use with Milborne 501 and 502 boilers.

For use on applcations consisting of B23 type flue configurations, where combustion air is taken from within the boiler house, and C53 room sealed twin duct systems where combustion air is taken directly from outside and ducted to the boiler.

Maximum equivalent length for this flue system is 30 metres from boiler to terminal for B23 applications, and from air inlet terminal to flue terminal for C63 applications.

Equivalent lengths for 90° bends is 4 metres with 3 metres equivalent length for a 45° bend.

Pictorial View Description HHL Part No.

Polypropylene 45° bend ø50 mm

Polypropylene 90° bend ø50 mm

Polypropylene pipe ø50 mm x 250mm Polypropylene pipe ø50 mm x 500mm Polypropylene pipe ø50 mm x 1000mm Polypropylene pipe ø50 mm x 1500mm

573407109 573407047

573407111 573407112 573407113 573407114

Cravat for flat room ø50 mm 573407115

Cravat for pitched roof ø50 mm 573407116

Stainless steel horizontal wall terminals ø50 mm 573407117

Twin duct horizontal flue discharge / air intake kit.

573407119 Consisting of: 2 x 90° bends 2 x ø50 mm x 500mm pipe 2 x ø50 mm x 250mm pipe 2 x Stainless steel wall terminals

Twin duct vertical flue discharge with horizontal air

573407121 intake kit for flat roofs. Consisting of: 1 x 90° bend 2 x ø50 mm x 500mm pipe 1 x ø50 mm x 250mm pipe 1 x Stainless steel wall terminals 1 x cravat for flat roof

Twin duct vertical flue discharge with horizontal air

intake kit for pitched roof. Consisting of: 1 x 90° bend 2 x ø50 mm x 500mm pipe 1 x ø50 mm x 250mm pipe 1 x Stainless steel wall terminals 1 x cravat for pitched roof

Polypropylene condensate discharge kit. To remove condensate from vertical and horizontal flue sections.

Polypropylene 50mm vertical flue terminal. 573407131

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

573407123

573407110

500001130/A

Components for Installations using Flue Headers - up to 3 x Milborne 502 Boilers

125 mm diameter flue components for use with Milborne 502 when using flue headers.

For use on applcations consisting of B23 type flue configurations only, i.e. Drawing combustion air from the plantroom. The flue should discharge in a riser terminating above roof level.

A maximum of 3 x Milborne 502 may be installed using a 125 mm diameter flue header system. Maximum equivalent length for this flue system is 30 metres from boiler to terminal.

Equivalent lengths for 90° bends is 4 metres with 3 metres equivalent length for a 45° bend.

Pictorial View Description HHL Part No.

Polypropylene 45° bend ø125 mm

Polypropylene 90° bend ø125 mm

Polypropylene pipe ø125 mm x 250mm Polypropylene pipe ø125 mm x 500mm Polypropylene pipe ø125 mm x 1000mm Polypropylene pipe ø125 mm x 1500mm

Polypropylene header for 502 boiler ø125 mm 573407149

Polypropylene end cap for header ø125 mm 573407150

573407143 573407044

573407136 573407137 573407138 573407139

Note: Due to the high thermal efficiency of the Milborne boiler and the resultant low flue gas temperatures there will be visible pluming of the flue gases at the flue termination. This is likely even when the boiler is not operating at condensing temperatures.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

9.0 Ventilation

All fuel burning appliances consume a quantity of air proportional to their power. Efficient ventilation of the installations premises is therefore necessary in accordance with the applicable standards.

Single Milborne 501 installations

A single Milborne 501 boiler having a rated input of 50kW requires ventilation in accordance with BS5440 Part 2.

Modular Milborne boiler installations

Multiple or modular Milborne boiler installations having a rated input in excess of 77kW require ventilation in accordance with BS6644.

Single Milborne 501 installations

Room sealed appliances

Detailed recommendations for air supply are given in BS5440 Part 2. The following notes are intended for general guidance only.

Where the boiler is to be installed in a room or internal space, the boiler does not require the room or internal space containing it to have a permanent air vent.

The minimum effective area of the permanent air vents required in the cupboard or compartment are given in table 1.

Position of air

vents

Air from room

or internal

Air direct from

outside

space

High level 500cm

Low level 500cm

250cm

Table 9.1

Natural draught appliances

Detailed recommendations for air supply are given in BS5440 Part 2. The following notes are intended for general guidance only.

Where the boiler is to be installed in a room or internal space, the boiler must be provided with permanent ventilation to either outside or an

adjacent room or internal space.

The permanent vent to outside must be no less than 215 cm

Where ventilated to an adjacent room or internal space that room or internal space must be ventilated directly to outside air. The minimum vent size to outside will be no less than 215 cm vent will be provided between the two rooms or internal spaces sized at no less than 215 cm

. Additionally a

If required the room or internal space may be vented across more than one adjacent room or internal space. In addition to the above requirements the vents between rooms or internal spaces must be increased to no less than 323 cm outside will remain at 215 cm

. The final vent to

Where the boiler is to be installed in a cupboard or compartment, permanent high and low level air vents are required for cooling purposes in the cupboard or compartment. Both vents must communicate directly with outside air or an adjacent room or internal space. These vents must be located as high and as low as practicably possible. Both vents should be located on the same wall.

The minimum effective area of the permanent air vents required in the cupboard or compartment are given in table 2.

Position of air

vents

Air from room or

Air direct

from outside

internal

space

High level 500cm

Low level 1000cm

Table 9.2

250cm2

500cm2

. Additionally a

. The final vent to

Vent general requirements

Air vents directly communing to outside must be located such that they are not easily blocked by debris, leaves, snow etc.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Air vents must be positioned a minimum of 300 mm form air vent terminals, whether for supply or extract, either above, below or horizontally.

Air vents communing between the appliance compartment and an internal space or room must be located no higher than 450mm above floor level.

For further information regarding ventilation for single Milborne 501 boiler installations please see BS5440 Part 2.

Modular Milborne installations

Detailed recommendations for air supply are given in BS6644. The following notes are intended for guidance only. In all cases there must be provision for an adequate supply of air for both combustion and general ventilation in addition to that required for any other appliance.

Combustion air for the boiler is drawn through the casing for open flue applications or through the dedicated air supply duct used in room sealed applications.

Air Supply by Natural Ventilation

The boiler plant room must have, or be provided with, permanent air vents directly to the outside air, at high level and at low level. For an exposed boiler house, air vents should be fitted preferably on all four sides, but at least on two sides. Air vents should have negligible resistance and must not be sited in any position where they are likely to be easily blocked or flooded or in any position adjacent to an extraction system which is carrying flammable vapour. Grilles or louvres must be so designed that high velocity air streams do not occur within the space housing the boiler.

input (Gross).

Air Supply by Mechanical Ventilation

Air supplied to the boiler by Mechanical means should be as follows;

Atmospheric

Boilers

Volume 1.10 0.45

Mechanical inlet and mechanical extract can be utilised providing the design extraction rate does not exceed one third of the design inlet rate.

Mechanical extract ventilation only with natural inlet ventilation MUST NOT be used.

For Mechanical ventilation systems an automatic control should be provided to cut off the gas supply to the boiler, in the event of failure of air flow in either inlet or extract fans.

Flow rate per 1000 kW total rated

Inlet air

(Combustion

ventilation)

M3/Sec M3/Sec

input (Gross)

Extract Air

(Ventilation)

The air supplied for boiler house ventilation shall be such that the maximum temperatures within the boiler house shall be as follows:

At floor level (or 100mm above floor level) = 25°C.

At mid-level (1.5m above floor level) = 32°C.

At ceiling level (or 100mm below ceiling level) = 40°C.

Where both low and high level openings are used, the grilles shall have a total minimum free area of:

Low Level (inlet) - 540cm2 plus 4.5cm2 per kilowatt in excess of 60kW total rated input (Gross).

High Level (outlet) - 270cm2 plus 2.25cm2 per kilowatt in excess of 60kW total rated

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

10.0 Gas Supply

Service Pipes

The local gas region must be consulted at the installation planning stage in order to establish the availability of an adequate supply of gas. An existing service pipe must not be used without prior consultation with the local gas region.

Meters

A new gas meter will be connected to the service pipe by the local gas region, or a local gas region contractor. An existing meter should be checked, preferably by the gas region, to ensure that it is adequate to deal with the rate of gas supply required.

Gas Supply Pipes

Supply pipes must be fitted in accordance with BS 6891 or IGE/UP/2. Pipework from the meter to the boiler must be of adequate size. Do not use pipes of a smaller size than the boiler gas connection.

Each Milborne 500 series module is supplied with an individual gas pipe which exits downwards on the right hand side. The incoming mains gas supply must be capable of supplying gas to the boiler at the required pressure and volume, under all firing conditions.

Boosted Supplies

Where it is necessary to employ a gas pressure booster, the controls must include a low pressure cut-off switch at the booster inlet. The local gas region must be consulted before a gas pressure booster is fitted.

Boiler House Control Valve

A manual valve for boiler house isolation shall be fitted in the gas supply line. It shall be clearly identified and readily accessible for operation, preferably by an exit.

11.0 Power Supply & Wiring

The electrical drawing of the Milborne series 500 boiler assembly is shown in detail in figure 11.1 Some important electrical features of the boiler assembly are specified on the appliance’s rating plate.

Boiler installation requires the connection to a 230 v – 50 Hz mains. The connection should be made in full compliance with the applicable electrical standards. However, it is always advisable to install an electrical overload switch within the boiler’s power supply.

Warnings

Always check the effectiveness of the earthing of the electrical system to which the boiler assembly is going to be connected. Indeed, should the earthing be inefficient, the correct operation of the ignition/ detection electrode might be affected.

Warning: 230 V cables must be separated from the 24 V ones using independent PVC conduits.

Warning: Before connecting external electrical components (regulators, electrical valves, outside temperature probes, etc.) to the boiler assembly, make sure that their electrical features (voltage, current, pickup voltage) are compatible with the available inputs and outputs.

Warning: Never switch off the boiler during normal operation (when the burner is on), by means of the on-off switch located on the underside of the boiler. This will cause overheating of the primary exchanger. To switch off the boiler (during normal operation) use a room thermostat, a remote control or the individual module on/off switch located on the front of the respective boiler module.

Warning: Do not touch electrical appliances with wet hands.

Warning: Do not expose the appliance to the elements (rain, sun, wind, etc.). for internal use only.

Warning: Do not pull or strain the electrical cables.

Warning: Do not let the appliance be operated by

non-expert people. Should the power supply cable break, isolate the boiler assembly. To replace it, contact a qualified electrician.

Connection to Temperature Regulation Devices

Milborne series 500 boiler assemblies are fitted with a very versatile control and management system, which can manage up to three independent circuits operating at different temperatures.

Figure 11.1 shows the main devices (probes, circulators, valves, etc.) which form the three abovementioned circuits, directly controlled by the boiler’s electronics. To connect these devices to the Boiler assembly’s terminal strip, please see figure 11.1.

Note: Temperature sensors for the secondary circuits are optional extras and must therefore be specified when requesting quotations and placing orders.

Programmable room thermostats for low and high temperature heating circuits are available as 24hr or 7 day programmable versions.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Figure 11.1

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Pump Connection

Milborne series 500 regulation system includes the simultaneous management of up to three circulators.

Therefore, if a low temperature circuit supplied by its own circulator is present and a general pump is to be installed on the system, it will be necessary to choose which one of the two devices should be managed by the Boiler Master Control.

This operation is carried out by setting the relevant parameter during commissioning.

The pumps shall be installed using an adequate contactor, as shown in Figure 11.2

Figure 11.2

Outside Air Sensor Connection

If outside temperature compensation is to be used, the outside air sensor needs to be connected to terminals no. 7 and 8 (figure 11.1).

The outside air sensor shall be installed on an outside wall, North or North/East aspect, at a minimum height of

2.5 metres, away from windows, door, and ventilation grilles and flue discharges.

Never install the probe in a position exposed to the sun or other forms of radiated heat.

Connection 0-10V Analog Signal

A B.M.S. temperature regulation device using a 0 – 10 V analog signal can be used by connecting the output signal to terminals no. 13 and 14 (figure no.

11.3).

Connection of an External Alarm

A 220 V output on the boiler’s terminal strip allows to connect an external alarm signal, capable of highlighting any fault condition. The alarm device must be connected to terminals no. 18 and 19 (figure 11.3).

Connection of a Remote Control

Figure 11.3

If the remote control (optional) is to be used, it must be connected to terminals no. 15, 16 and 17 (figure 11.3).

Programmable Room Thermostat Connection (On / Off)

Connect the high temperature system’s air temperature sensor to terminals no. 9 and 10 (figure 11.4). The low temperature system’s thermostat shall be connected to terminals no. 11 and 12 (figure 11.4).

Remote Enable Signal

Alternatively a remote time clock / enable signal for the high and low temperature heating circuits may be connected to the programmable room thermostat connections, terminals 9,10,11,12 respectively.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Interlock Circuits

Where interlock circuits are used to prevent boiler operation during occurrences such as pump failure or pressurisation unit failure these should be connected as follows.

All interlocks should be joined in series and wired to a multiple contactor located across each time clock circuit (figure 11.4).

The installation within the external time clock circuits will allow correct shutdown of the boiler when the circuit is broken.

Note: The interlock circuit should never be used to isolate the boiler power supply. Isolating the boiler electrically during normal operation may lead to overheating problems

Figure 11.4

Figure 11.5 - Milborne 502 Master - Wiring Schematic

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Figure 11.6 - Milborne 502 Slave - Wiring Schematic

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

12.0 Emergency Mode

Milborne series 500’s electronic management system includes an operation mode called “Emergency” mode, which can be activated in case of malfunctioning of the Master card.

Indeed, to ensure continuous operation of the boiler assembly, the master card can be disabled in such a way as to have the system operate at a default delivery temperature set by the Manufacturer.

To enable the “Emergency” function, carry out the following procedure:

12.1 Disconnect the 4-pole connector J14 from the Master card (see figure 12.1)

Master

Figure 12.1

Figure 12.2

Slave

12.3 Supply all system circulators with mains current, using the appropriate switches (see figure 11.2).

12.4 Terminal X1 or Terminal X2 which are part of the cabling of the J14 connector (disconnected at stage

12.1, above) must be connected to a 24V DC power supply (see figure 12.3)

WARNING! If several Milborne boilers are installed in series, one or both of the terminals (X1 or X2) or both may be connected to the adjacent boilers.

If this is the case, supply the free terminal with 24V, for example terminal Xn shown in figure 13.1 (on next page)

12.2 Set all four J17 switches located on each Slave of the boiler installation to the OFF position

Master

Figure 12.3

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

13.0 Set-up for multiple Milborne boilers installations

One of the many functions included in Milborne 500’s electronics allows for the installation of several modules in series, to create boiler assemblies having an overall power exceeding 100 kW.

This type of system requires one single Milborne series 500 equipped with a Master control unit, while all other Milborne 500 will have no control unit.

The cabling and setting of some electronic components present on the system should be carried out as follows:

Milborne 502 multiple installation (n**1 Milborne 502 Master with n**2 Milborne 502 Slave

Milborne 502 Slave Milborne 502 Master Milborne 502 Slave

13.1 Connect the cabling of the Boiler assemblies making up the series as shown in figure 13.1

13.2 Every slave control unit making up the system should be identifiable by the single Master control unit by means of an address which is assigned through specific settings on the two series of switches, J10 and J17, located on each Slave in the set.

Figure 13.1 - Milborne Multiple Installation

Each slave (one for each burner) needs to be properly configured so that the Master controller can identify their position in the sequence. First the Slave boards need to be divided into 15 blocks. The Master control system can manage a maximum of 15 blocks each made up of 4 Slave boards each.

Eg, If 5 Slave controllers are connected to one Master controller then 2 blocks are required. The first containing 4 Slave controllers and the second just 1. To configure the addresses follow the next procedure.

1. Identify the block that each Slave is to be

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

assigned, eg block 1… 2… 3… etc.

2. Identify the position that each Slave is to be assigned in its chosen block, e.g. position 1… 2… 3 etc.

Note: Master controllers are all pre-set as follows;

501 - 502 Master controllers are always despatched as position 1 and position 2 of block number 1. 502 Slave controllers always despatched as position 3 and position 4 of block number 1.

Therefore as part of the pre-commissioning checks the settings of all Slave controller block and position switches must be checked. To assist the correct setting of the block and

500001130/A

position switches the chart below will assist.

The example below indicates an installation with 1 block and with 1 boiler module. Both addresses are set to 1.

OFF

Slave

Address

Jumpers

1 2

Boiler

Module

OFF OFF 1

OFF ON 2

ON OFF 3

ON ON 4

Slave

Address

OFF

1 2 3 4

Block

Address

Jumpers

1 2 3 4

Block

Settings

OFF OFF OFF OFF Emergency

Code

OFF OFF OFF ON Block 1

OFF OFF ON OFF Block 2

OFF OFF ON ON Block 3

Figure 13.2

OFF ON OFF OFF Block 4

OFF ON OFF ON Block 5

OFF ON ON OFF Block 6

OFF ON ON ON Block 7

ON OFF OFF OFF Block 8

ON OFF OFF ON Block 9

ON OFF ON OFF Block 10

OFF OFF ON ON Block 11

ON ON OFF OFF Block 12

ON ON OFF ON Block 13

ON ON ON OFF Block 14

ON ON ON ON Block 15

4 Boiler modules to each block

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Fig 13.3 Example of boiler installation consisting 7 boiler modules in same cascade sequence.

Boiler module 1

Boiler module 2

Boiler module 3

OFF

1 2

OFF

1 2

Block 1

OFF

1 2 3 4

Block 1

OFF

1 2 3 4

Block 1

OFF

1 2 3 4

Boiler module 4

Boiler module 1

Boiler module 2

1 2

OFF

1 2

Block 1

OFF

1 2 3 4

Block 2

OFF

1 2 3 4

Block 2

OFF

1 2 3 4

Boiler module 3

HAMWORTHY HEATING LTD

1 2

OFF

1 2 3 4

MILBORNE 500 SERIES

Block 2

500001130/A

14.0 Programmable Room Thermostat

The high temperature and low temperature heating circuits may have an enhanced level of control by using the 7 day programmable room thermostat. Offering independent switching times for each week day the thermostat offers the flexibility required in buildings with sporadic heating requirements as well as the more traditional occupancy trends.

Technical data

Power supply = 2 x 1.5V battery Normal temperature range T1 = 5 - 30°C Night set-back range T2 = = 6°/14°/16°/18°C Temperature updating = Once/minute

Room temperature switching hysteresis = 0.2° - 0.8°C Contacts rating = Max 250V / 5A Internal frost protection = 6°C Minimum setting period = 1 Hour

Locating the thermostat

The thermostat should be positioned in the area of the building most critical for comfort. Within this area the thermostat must be positioned away from heat sources such as radiators, sun rays and kitchens. Additionally the thermostat must be located away from sources of draught such as doors, windows and ventilation grilles. All of these can lead to false readings at the thermostat.

INCORRECT LOCATIONS CORRECT LOCATIONS

Mounting the thermostat

The thermostat is suitable for wall with rear cable entry. Alternatively the thermostat may also be mounted to a standard electrical back box or round conduit box.

Fig 13.4 - Thermostat Mounting

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Wiring connections

Connect the wires from the boiler Master controller to terminal 1 & 2 of the programmable room thermostat.

For high temperature heating circuit, terminal 9 at the Master control provides the live and should be wired to terminal 1 at the thermostat. Terminal 10 at

the Master control receives the switch live return and should be wired to terminal 2 at the thermostat.

For low temperature heating circuit, terminal 11 at the Master control provides the live and should be wired to terminal 1 at the thermostat. Terminal 12 at the Master control receives the switch live return and should be wired to terminal 2 at the thermostat.

For programming details please refer to the instructions provided with the room thermostat. Alternatively contact Hamworthy Heating Ltd for a copy of instruction manual.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

15.0 Commissioning

Hamworthy Heating Ltd strongly recommend that the Milborne 500 series boiler is commissioned by our engineers. This will ensure that the boiler is operating correctly and efficiently. By using Hamworthy Heating Ltd to commission the appliance you will also benefit from the full parts and labour warranty throughout the first twelve months post commissioning.

Alternatively the Milborne 500 series boiler may be commissioned by a competent engineer holding CORGI registration. The warranty in these instances will be restricted to parts only for the period of 24 months post delivery.

15.1 Pre-commissioning checks

Note:Before commencing any operations ensure

that the boiler is isolated from both the electrical supply and the gas supply.

Remove the front cover to gain access to the internal boiler assemblies. The cover is secured with 2 screw on the underside at the left and right hand sides. Once the screws have been removed the cover may be lifted to disengage the retaining clips at the top and removed. Store the front casing panel carefully to prevent damage.

Note: Before starting the boiler commissioning procedure verify the following

15.1.1 Ensure that all external time clock and thermostatic controls are not demanding that the boiler commences operation.

15.1.2 Make certain that the boiler is configured for the type of gas being supplied. Parameter 36 must be checked and set as necessary. When the boiler arrives on site parameter 36 is configured for Natural Gas supply with equivalent flue length less than 15 metres. If using the boiler with a LPG Gas supply or equivalent flue lengths greater than 15 metres, parameter 36 must first be modified in accordance with the table below. Instructions detailing the procedure for modifying parameters are given in Section 19.0 of this manual.

Parameter 36

15.1.3 Check that the heating system has been flushed and refilled and that air has been purged from all high points.

15.1.4 Ensure that the system isolating valves are in the open position.

15.1.5 Ensure that the water pressure within the heating system is correct. Minimum pressure

0.5barg.

15.1.6 Ensure that circulating pumps have been installed correctly and that the pumps are available for operation.

15.1.7 Ensure that the flue ducts are correctly fitted and that they are free from obstruction. Check that the inlet and outlet terminal are located correctly and in accordance with regulations.

15.1.8 Ensure that the gas supply has been properly purged and verified for gas soundness. A purge and soundness certificate should be available from the gas pipework installation contractor.

15.1.9 Turn on the mains gas supply. Check that sufficient gas pressure is available at the boiler,

17.5mbar Natural Gas, 37.5mbar LPG. See section

15.2

Gas Valve

offset

adjustment

Gas valve

throttle screw

Fig 15.1

Gas inlet

pressure test

point

Gas outlet

pressure test

point

Description Type of Gas

Range 1-7

Default 1

Specification 1=Natural Gas with equivalent

flue length <15m 2=Natural Gas with equivalent flue length >15m 3=LPG with equivalent flue length <15m 4=LPG with equivalent flue length >15m

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

15.1.10 Ensure that all electrical connections made to the boiler are correctly sized and installed. Refer to wiring diagrams in Section 11.0.

15.1.11 Check that the boiler controls wiring has not been modified. Any modification could lead to boiler failure.

500001130/A

15.2 Gas inlet pressure test

The gas pressure must be checked at the inlet to the boiler as shown in figure 24. This is to ensure that the gas pressure is both constant and sufficient to provide full burner output. To verify this the pressure has to be taken as a static and a dynamic reading. The dynamic reading cannot be taken until the boiler has been started at step 15.3.3

A maximum difference in gas pressure of 1 mbar must not be exceeded between static and dynamic conditions.

The gas pressure measured during these tests must be no less than 17.5 mbar for Natural Gas or 37.5 mbar for LPG.

Fig 15.2 - Gas Inlet Pressure Test Point

15.3.2 LPG BOILERS ONLY. Turn the flow

adjustment screw 2 full turns anti-clockwise as indicated in figure 15.3.2

Fig 15.3.2 - LPG Flow Adjustment

Starting the boiler

Ensure that all external time clock and thermostatic controls are now demanding boiler operation and that the circulating pumps are operating and circulating water through the boiler.

15.3.3 Switch the main boiler on/off switch located

on the underside of the boiler to the on position as indicated in figure 15.3.3

15.3 Commissioning the Boiler

Once the preliminary checks have been completed and the gas inlet pressure has been verified as correct, commissioning of the boiler modules may begin.

15.3.1 Insert the combustion analyser probe in the flue at the analysis point shown in figure 15.3.1

Fig 15.3.3 - Starting the Boiler

15.3.4 Start the individual boiler module using the

on/off switch located on the front of the control panel for the chosen module. Milborne 502 models have 2 switches on the front of the control panel. It is therefore important to selct the switch corresponding to the boiler module being commissioned. See fig

15.3.4

Fig 15.3.1 - Analysis Point

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Module reset button

Module fault indication LED, red

Module operating indication LED, green

Fig 15.3.4 - Control Panel Modules

15.3.5 Ensure that a number appears in the left indication window of the Master control panel. This number relates to one of the heating circuits.

Heating circuit indication window

Demand from domestic hot water circuit or both in operation;

Demand from heating circuit 2;

15.3.6 Wait for the green indicator LED to illuminate, to indicate that the ignition phase of boiler start-up has commenced.

Slow flashing LED = Standby

Fast Flashing LED = Ignition phase

Steady LED = Flame is present

Note: The ignition sequence is as follows;

1) 5 Seconds of pre-

purge

2) 4 Seconds of pre–

purge

Fig 15.3.5 - Master Control Panel

The operating sequence for the display is as follows;

No Demand for heat;

Heat Demand for domestic hot water circuit or from heating circuits 1 and 2;

Fig 15.3.6

15.3.7 Run the burner to maximum power. To achieve this press and hold S2 and S4 for 5 seconds.

S2 S4

After 5 seconds the maximum fan speed can be selected with switch S4. All the fans in the boiler installation will operate now at the maximum speed as programmed at parameter 15; maximum fan speed CH.

The first digit of the display will indicate the fan speed. H = maximum speed.

The second two digits of the display indicate temperature, e.g. T1 = 80°C

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

15.3.8 The gas valve throttle setting can now be regulated. This is a condition of the flue gas

combustion analysis rather than a fixed pressure. Check the CO2 values in accordance with table

15.1. If the CO2 values are incorrect then adjustment must be made by adjusting the gas valve throttle screw. Turning the throttle screw anticlockwise increases the air flow and reduces the CO2 value. Turning the throttle clockwise decreases the air flow and increases the CO2 value. See fig

15.3.8.

Note: To increase the air flow turn the screw anti clockwise, to decrease the air flow turn the screw clockwise.

Fig 15.3.11 - Gas Flow Adjustment

15.3.12 Ensure that the combustion settings are still

correct at maximum output and if necessary repeat stages 15.3.7 to 15.3.12 until the settings are correct.

Table 15.1: Flue Gas Analysis C02 Readings

Gas Max Output Min Output

Fig 15.3.8 - Air Flow Adjustment

15.3.9 Allow the boiler to stabilise at maximum power and if necessary readjust the gas flow rate.

15.3.10 Reduce the boiler power to minimum by pressing switch S5 on the control panel.

The first digit of the display will indicate the fan speed. L = minimum speed.

15.3.11 The gas flow rate can now be regulated. This again is a condition of the flue gas analysis rather than a fixed pressure. Check the CO2 values in accordance with table 15.1. If the CO2 values are incorrect then adjustment must be made by adjusting the gas valve offset adjustment screw. See figure 15.3.11. Turning the offset screw anticlockwise increases the gas flow and increases the CO2 value. Turning the offset clockwise decreases the gas flow and decreases the CO2 value. See fig 15.3.11.

Note: To increase the gas flow turn the screw anti clockwise, to decrease the gas flow turn the screw clockwise.

Natural Gas C02 9.2 - 9.4% C02 8.3 - 8.5%

L.P.G. C02 10.2 - 10.4% C02 8.6 - 8.9%

15.3.13 The individual boiler module is now

commissioned. If there are further modules to be commissioned then switch the commissioned module off using the external thermostatic controls or time clock to ensure correct shutdown. Further modules may now be commissioned individually by following procedure detailed and used for the first module.

15.3.14 Once all modules have been commissioned

switch all modules to the ‘on’ position and take a dynamic gas inlet pressure test reading to ensure that the gas supply is sufficient for full operating load conditions. This should be taken at all boiler modules to ensure the supply is satisfactory at all boilers.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

16.0 Master control panel error messages

The following tables display the Master board errors messages. These messages relate to faults that can occur within the Master control panel, or from the sensors and circuits connected to the Master control panel.

Errors can be divided into two groups: lock-out errors which can be automatically reset (E errors ) and permanent errors (A errors ) which must be reset just by pressing the reset button.

16.1 “Error” mode

The display starts flashing when a fault occurs.

Follow the procedures below to establish the fault code and its relevance.

Procedures Display Button Required

1. The display starts flashing to signal one or more faults.

Press S4 (+): the display will alternate between

1b.

the address of the first unit (boiler module) and the first error code.

Press S4 again (+) to display all the errors for this unit (boiler module).

The error of the successive unit (boiler module) will be visualized one after the other, press S4 (+).

Press S5 (-) to display the errors in the opposite way, from the last to the first unit (boiler module)

(e.g. unit [boiler module] 2 error code E 05. Fault can be either E codes or A codes.

If errors derive from the Master, they will be displayed (before the other errors) as U 00 + error code. The Master controller always has addresses U 00.

See error list for codes and

related faults

2. Press S2 (SET/ ESC) to exit ‘errors’ and go back to display mode.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

16.2 Burners in Permanent Lock-Out.

In case of permanent lockout of the burners, it is necessary to press RESET (S1)

If you press RESET (S1) while you are in ‘functioning display mode’ all boiler modules will be reset.

If you press RESET (S1) while you are displaying the error which caused the permanent lock-out,

only the boiler module involved will be reset.

16.3 Master Panel Permanent Errors, A Errors (permanent lock-out)

Display Nr PC Nr Error Description

A9 9 RAM_ERROR Ram check in processor isn’t correct

A16 10 E2PROM_ERROR E2prom contents are incorrect

A18 12 WRONG_EEPROM_SIGNATURE E2prom doesn’t correspond to main processor

A24 19 STACK_ERROR Overflow in internal stack

16.4 Master Panel Blocking Errors, E errors (automatic reset)

The following blocking error numbers are possible:

Display Nr PC Nr Error Description

E25 0 E2PROM_READ_ERROR E2prom isn’t readable

E23 28 REFHI_TOO_LO_ERROR Temperature measurement is incorrect

E24 29 REFHI_TOO_HI_ERROR Temperature measurement is incorrect

E25 30 REFLO_TOO_LO_ERROR Temperature measurement is incorrect

E26 31 REFLO_TOO_HI_ERROR Temperature measurement is incorrect

E32 33 NO_SLAVES_PRESENT There are no slaves connected

E34 42 50HZ_ERROR Main frequency is not 50Hz (NI)

E2 51 T_FLOW_1_OPEN Flow sensor is not connected

E18 67 T_FLOW_1_SHORTED Flow sensor is shortened

E20 69 T_TANK_SHORTED Tank sensor shortened

E3 58 T_FLOW_2_OPEN Flow_2 sensor (low sys) not connected

E4 53 T_TANK_OPEN Tank sensor not connected

E19 68 T_FLOW_2_SHORTED Flow_2 sensor (low sys) shortened

E21 66 NTC4_SHORTED

Outdoor temperature sensor shortened

(NTC4: OUTDOOR T)

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

16.5 Boiler Module Error Messages

The following tables display the boiler module error messages. These messages relate to faults that can occur within the individual boiler modules.

Errors can be divided into two groups; lock-out errors which can be automatically reset (E errors) and permanent errors (A errors) which must be reset just by pressing the reset button.

16.6 Boiler Module Permanent Errors, A Errors (Permanent Lockout)

A01 5 failed attempts of starting up (5 sec pre-purge / 5 sec. ignition)

A02 Too many failed ignitions

A04 GK relay open error

A05 GK relay not open error or Phase neuter are inverted

A06 Safety relay does not close

A07 Safety relay does not open

A08 Safety relay open while closed expected

A09 RAM error

A10 E2prom error

A11 Fan error

A12 Wrong e2prog signature

A13 Stack error

A14 Internal control error

A15 Internal control error

A16 Safety relay closed while open expected

A17 Flow temp. error. Max flow temperature was overcome (see option selected on Parameter 71)

A18 Return sensor error. max return temp. was overcome (see option selected on Parameter 71)

A19 Flue sensor error (fan will run at max. speed)

A20 Flame turned off too late after the gas valve was closed)

A21

A22

A23

A24 Fan error

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

The following blocking error numbers are possible:

E34 Reset error

E35 Water switch error (open contact)

E36 E2prom read error

E37 Flame error

Phase and neutral are inverted (NI)

E38 Short circuit flue sensor

E39 Flue sensor with open contact

E40 50 Hz error

E41 Wd communication error

E42 Short circuit flow sensor

E43 Flow sensor with open contact

E44 Short circuit return sensor

E45 Return sensor with open contact

E46 Flow sensor error when limit temp. is exceeded (see option selected)

E47 Return sensor error

E48 Flue sensor error

Fig 17.1 - Control Panel Overview (Master)

S1 - Reset S2 - Set / Esc S3 - Set Values S4 - Increase

HAMWORTHY HEATING LTD

S5 - Decrease S6 - Prog / Ok U2 - LED Display U3 - LED Display

MILBORNE 500 SERIES

U4 - LED Display D4 - Power on green LED D5 - Faults display red LED

500001130/A

17.1 Control Panel Introduction:

The control panel switches give access to several functions by pressing either one of them, or a combination of them.

RESET S1 : Press it in order to unlock the unit when a fault has occurred.

SET S2: To enter into the parameters and monitor mode of each single unit.

SET S3: Displays the running state of the different master circuits

BUTTONS S4 & S5: To increase decrease a certain value.

BUTTON S6: To store new values.

17.2 Mode Display.

The D5 red LED turns on in case a fault occurs causing the permanent lock-out of one boiler module (Reset either the Master or the relevant boiler module to restore normal operation).

The D4 green LED displays the presence of communication between the Master and individual boiler modules.

The 3 display LED’s U2, U3 and U4 display the following;

SYSTEM STATUS DISPLAY

No demand of heat and water (the right digits display the flow temperature T1 e.g. T1=30°C)

Request from circuit no. 1 or from the 1st and 2nd circuit at the same time. (the right digits display the flow Temperature T1 e.g. T1=80°C)

Request from water circuit or simultaneous circuit requests. (the right digits display the Flow Temperature T1 e.g. T1=80°C) The dot after the no. 1 left digit is flashing.

Request from no.2 circuit. (the right digits display the Flow Temperature T1 e.g. T1=80°C)

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

18.0 Users Parameter Adjustments

The three following users parameters can be changed from the ‘functioning mode display’:

◊ High heating circuit Set-Point T ◊ Water circuit Set-point ◊ Low circuit heating Set-Point T

Press S3 to display the below listed values:

◊ High_heating circuit flow t (pos. 1) ◊ T_Water (pos. 2) ◊ Low flow_heating circuit T (pos 4)

The following procedures will modify one of the above values.

18.1 Press S2 to select the desired value,

18.1 Changing Operating Temperature Set-Points.

e.g. To change the Setpoint value of the low heating circuit T6 from 50 to 40°C

the two right LED digits shall flash.

18.2 If the value needs to be modified, press S4 and S5 till your desired value is displayed.

S4 S5

18.3 Press S6 (Prog/ok) to store it. The chosen value shall stop flashing and the display will be restored to the mode display.

Procedures Display Button Required

1. Mode display is reading high temperature circuits at 80°C (e.g. high circuit real value 80°C, fig. 1)

Press S3 to enter into the setting display, press it again and set 6 on the first digit to display the required value. (e.g. Low temp circuit set-point 50°C, fig 8)

3. Press S2 (set/esc) to select the chosen value. The two right LED digits shall flash.

4. Press S5 (-) to set the setpoint to the desired value. The two right LED digits will continue to flash. (e.g. Low temp circuit set-point adjusted to 4°C, fig 25)

5. Press S6 (Prog/OK) to store the new value. The two right LED digits will stop flashing.

6. After 3 sec. The display will return to the mode display with the new set value.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

If no variations occur after pressing S2 at step 3, (because the desired value corresponds with the set value) the board shall restored to the mode display.

If after pressing + and - , at step 4, no operation is carried out, after 1 minute the display shall be restored to the mode display. The new selected value shall not be restored.

18.2 Monitor Mode

Press S2, (SET/ESC) to enter into the Monitor mode and display the running status of each single boiler module (from address 1 to 64)

Follow the procedure below to enter into the monitor mode;

Procedures Button Required Display

1. Mode display is reading high temperature circuits at 80°C (e.g. high circuit real value 80°C)

Press S2 (SET/ESC), for 5 sec. The display shows that it is possible to read the values, or the functioning mode of boiler module 1.

3. Press S4 (+) or S5 (-) to scroll the desired boiler module (e.g. for boiler module 19)

4. Press S3 to display the 1st value for the selected boiler module. Press the same button, S3, to display the following values (e.g. 1st value, flow temperature reading)

5. Press S2 to exit from the monitor mode (SET/ ESC). If no operations are carried out for 5 minutes, the display shall be restored to the mode display.

Use S3 to display the following values to each single unit;

Pos Value Display

1. Flow temperature for selected boiler module (e.g. 70°C)

Return temperature for selected boiler module. (e.g. 50°C)

3. Flue temperature for selected boiler module. (e.g. 60°C)

4. Ionization reading, flame probe, (range 0-99) for selected boiler module. (e.g. ionization reading 44)

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Pos Value Display

5. Fan PWM signal (%) for selected boiler module. If PWM=100%, corresponds to 99 on the display. (e.g. Fan PWM signal 66%)

Motorized valve position for selected boiler module.

(e.g. valve position open)

(e.g. valve position closed)

7. Max ionization temperature (range 0—99) at first ignition attempt for selected boiler module. (e.g. Max ionization temperature value 80)

18.3 User Level Parameter list

No Description Lower

Limit

1 Setpoint_T

_CH_High

10°C utente T_CH-

Family Upper

Limit

High_Limit

Default

Value

70 For the 1st

Note Specification

circuit or unique

Setpoint_T_CH_High: Required flow temperature for high temperature heating circuit when CH_tpye_High is 0, parameter 14. Max required flow temperature for high temperature heating circuit when in other modes

Screen

CH_High

2 Set value

for DHW

3 Set Value

CH-mode 2nd Circuit (maximum temp. set point in weather compensat ion mode, at lowest outside temp.)

10°C utente T_DHW_Li

mit

10°C utente T_CH_Low

_Limit

50 For DHW

Circuit

40 For 2nd

circuit or uniqUE

T3 set DWH: Required DHW stored water temperature

T6 set CH 2nd: Required flow temperature for low temperature heating circuit.

DHW

CH_low

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

19.0 Programming Mode

(restricted to the Authorized Service Centre and to the Manufacturer only)

A Password is needed to modify these parameters. Only the Authorized Service Centre can enter the password and then modify the user and service parameters.

Below is the procedure to enter into the programming mode;

Procedures Button Required Display

1. Mode display is reading high temperature circuit at 80°C (e.g. high circuit real value 80°C)

Press S2 (SET/ESC) followed by S6 (Prog/OK). After 5 seconds the second and third digit will start flashing.

3. Use S4 (+) and S5 (-) to enter the second figure of the password on the right hand digit (e.g. password = x2)

4. Press S6 (Prog/OK) and store the second figure of the password.

5. Use S4 (+) and S5 (-) to enter the first figure of the password on the central digit. (e.g. password = 22)

6. Press S6 (Prog/OK) to store the password. If the password is wrong, the display will return to mode position

7a Use S4 (+) and S5 (-) to scroll all password

protected parameter addresses.

7b Press S2 (Set/Esc) to select the parameters for

modification. Parameter address and its respective value will alternate on the display

8. Use S4 (+) and S5 (-) to change the value of the selected parameter. Every time one of these keys is pressed the alternating of the parameter address and the value is stopped for 5 seconds and only the value is shown.

9. Press S6 (Prog/OK) to accept and store the new value. The display will return to the display at step 6. To check and alter further parameters return to step 7 and follow through.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

See parameter list for address

and range settings

See parameter list for address

and range settings

500001130/A

19.1 Heating Engineers Parameter List

1st Level Password (on the Master and on the computer.

No Desc. Lower

Limit

6 DHW

_Type

Family Upper

Limit

Default

Value

Note Specification Pc

0 S 6 70 0 = DHW Disabled

1 = Plate heat exchanger with NTC probe. 2 = Calorifier with NTC probe 5 = Plate heat exchanger with thermostat.

7 P_dhw

_limit

8 T_dhw

_limit

1 S 255 230 Setting for max fan speed for

dhw-mode

10°C S T_dhw

_max

60 Limitation

on the

Limit for DHW set-point as set in

parameter 2 setting for Setpoint_T _Tank

9 Priority 0 S 2 0 Central heating when:

0 = T_Flow_high >

( Setpoint_T_Ch_high –

Dhw_&_ch_hyst)

1 = T_Flow_high >

( Setpoint_tank + T_tank_extra –

Dhw_&_ch_hyst)

2 = Only sanitary circuit

Screen

DHW

10 T_tank

_extra

11 T_tank

_hyst_

12 T_tank

_hyst_

down

13 Max

number

burners

active on

DHW mode

14 CH_type

_high

0°C S 50°C 30 Temperature of the primary

circuit during DHW production.

This value has to be added to

the DHW set-point parameter 2

to obtain the set-point for

primary circuit. Ex: 50°C+30°

C=80°C

0°C S 20°C 1 Upper offset setting for stored

DHW off temperature. Ex.:50°

C+1°C=51°C

0°C S 20°C 5 Lower offset setting for stored

DHW on temperature. Ex.:50°C-

5°C=45°C

1 S 60 Max

(60)

Limit of modules that can

operate during DHW production

mode.

0 Rh 3 1 0 = Fixed flow temperature

1 = Compensated flow

temperature

2 = BMS 0-10V load based

3 = BMS 0-10V temperature

based

DHW

CH_ high

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

No Desc. Lower

Family Upper

Limit

Default

Value

Note Specification Pc

Screen

15 P_ch_

max

16 CH_

pririty

17 T_ch-high_

limit

18 T_ch-high_

foot

19 CH_high

_mod_

Hyst_on

1 Rh 255 230 Setting the max fan speed for

CH-Mode

0 Rh 2 0 0 = Shared priority

1 = High temperature circuit priority. 2 = Low temperature circuit priority

10°C Rh T_CH_

High_Max

-10°C

(parameter

44)

10°C Rh Setpoint

T_CH_

High

(parameter

80 Limitation

on the setting for Setpoint_T _ch_high

50 Climatic

curve regulation

Upper limit for high temperature circuit set-point as set in parameter 1. Also see parameter 44 T_CH_High_max

This is the minimum compensated set-point in CHmode (at maximum outside temperature). It limits Parameter 1 Setpoint_T_CH_High

0°C Rh 20°C 7 Burner is switched on when

T_flow_high < Setpoint_CH_High – CH_high_mod_hyst_on. Ex.: 80°C-7°C = 73°C

CH_ high

20 CH_high

_mod_

Hyst_off

21 Attenuation

_high

22 CH_type

_low

23 T_ch_low_

limit

0°C Rh 20°C 3 Burner is switched off when

T_flow_high > Setpoint_CH_High + CH_high_mod_hyst_off Ex.: 80°C+1°C = 81°C

0°C Rh 70°C 0

Attenuation of the compensat ed heating curve after

the 1 circuit room thermostat opening

The T set-point is decreased with the attenuation function, only if High Temperature Circuit room thermostat input is open, i.e. no demand.

0 = The system is turned off after thermostat opening. 1… n = The set-point is decreased by 1...n

°C

0 Rb 3 1 0 = Fixed flow temperature

1 = Compensated flow temperature. 2 = BMS 0-10V load based. 3 = BMS 0-10V temperature based

10°C Rb T_CH_

High_Max

-10°C

(parameter

53)

50 Limitation

on the setting for Setpoint_T _ch_low

Upper limit for low temperature circuit set-point as set in parameter 3. Also see parameter 53 T_CH_low_max

CH_ high

CH_

low

CH_

low

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

No Desc. Lower

Family Upper

Limit

Default

Value

Note Specification Pc

Screen

24 T_ch_

Low_

foot

25 Attenuation

_low

26 CH_low_

Mod_hyst_

27 CH_low_

Mod_hyst_

off

28 Mixing_

Valve_step

_open

_period

10°C Rb Setpoint_t

_ch_low

(parameter

25 Climatic

curve

regulation

This is the minimum compensated setpoint in CHmode (at maximum outside temperature. It limits Parameter 3 Setpoint_T_CH_High

0°C Rb 70°C 0 Attenuation

of the compensat ed heating curve after the 2nd circuit room thermostat

The T set-point is decreased with the attenuation function, only if Low Temperature Circuit room thermostat input is open, i.e. no demand. 0 = The system is turned off after thermostat opening.

1...n = The set-point is decreased by

°C

1...n

opening

0°C Rb 20°C 5 Burner is switched on when

T_flow_low < Setpoint_ch_low – CH_low_mod_hyst_on

0°C Rb 20°C 3 Burner is switched off when

T_flow_low < Setpoint_ch_low + CH_low_mod_hyst_off

0 sec Rb 255 sec 5 Time period for mixing_valve to

open from completely closed position

CH_

low

CH_

low

CH_

low

CH_

low

CH_

low

29 Mixing_

Valve_step

_closed _period

30 Mixing_

Valve_ interval

period

31 Mixing_

Valve_

hysteresys

32 Mixing_

Max_

Still_

hys

33 Power_

Control_

mode

0 sec Rb 255 sec 7 Time period for mixing_valve to

close from completely open

CH_

low

position

0 sec Rb 255 sec 5 Time period that mixing_valve

remains static after moving

0 sec Rb 30°C 2

CH_

low

CH_

low

0 sec Rb 30°C 2 CH_

low

0 G 1 1 0 = min

num of burners, cascade

Selected mode for sequencing power demand power over individual burners in cascade or unison style

Power

Dist.

1 = max num of burners, unison

34 3rd_Pump 0 G 1 0 0 = primary

1 = low temp

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

Priority setting for pump 3. 0 setting when used as primary pump 1 setting when used as low temp Heating circuit pump

500001130/A

CH_ high

No Desc. Lower

Family Upper

Limit

Default

Value

Note Specification Pc

Screen

35 T4

Frost

protection

36 Gas

type

37 T_out

_min

38 T_out

_max

-30°C G 15°C 3 Anti frost Also on T1=5°C

fixed

setting

1 G 7 1

-20°C G 30°C 0 Climatic

curve regulation

0°C G 30°C 18 Climatic

curve regulation

Temperature for starting frost protection T4. If T4<= this value or

T1 <= 5°C then the pump start (*). If after 10 minutes T1 is not over 5°

C -> one burner starts at the maximum power until T1>= 20°C. If after 10 minutes T4 is still under this

value then pump this value.

1 = NG with flue gas duct < 15m lg 2 = NG with flue gas duct > 15m lg 3 = LPG with flue gas duct <15m lg 4 = LPG with flue gas duct >15m lg 5 = town gas 6 = Gas F 7 = Gas G

(*) run until T4 >

Outside temperature at which maximum flow temperature is required. High-limited by T_out_max

Outside temperature at which minimum flow temperature is required. Low-limited by T_out_min. Above this value the heating system will be turned off (Summer shutdown)

CH_

high

Gas

Type

CH_

high

CH_

high

39 T_out

_correct

40 P.reduce

emergency

-30°C G 30°C 0 Calibration / correction of outside

temperature

10°C SL 80°C 70°C Sets the maximum flow

temperature permitted when the

CH_ high

Slave

emergency mode is used

41 Parameter

reset

0 G 1 0 1 = Reset slaves to factory

default

Setting the value of ‘1’ all the default values are restored EXCEPT GAS TYPE NUMBER, PARAMETER 36

(*) This pump is

a) The general pump; if the 3rd pump is set as

general

b) The high pump; if the 3rd pump is set as

low pump.

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Heating Engineers Parameter List (Cont’d)

2nd Level Password (on the Master and on the computer.

No Desc. Lower

Limit

44 T_CH_

10°C Rh 117°C 90 Safety

High_

max

45 P-factor

0 Rh 255 30 P-factor for PI-control in CH-high

CH_high

46 I-factor

0 Rh 255 70 I-factor for PI-control in CH-high

CH_high

47 D-factor

0 Rh 255 128 D-factor for PI-control in CH-high

_CH_

high

48 CH_high

0 sec Rh 255 (=

Blocking

_time

49 Post

pump

time

0 (=

minute

CH_high

Family Upper

Limit

minutes)

Rh 255 (cont.

functioning

Default

Value

Device

0 Time

before restart in CH mode after a thermostat opens

5 Pump

over-run high temp circuit

Note Specification Pc

Screen

If T1 > T1 maximum temperature for 5 seconds. It limits the fan speed, parameter 15

CH_

high

CH_

mode

high

CH_

mode

high

CH_

mode

After the burner is switched off in CH-mode the system is blocked

high

CH_

high

for CH-mode for this blocking time

This is the post pump time after the high temperature heating

CH_

high

circuit room thermostat opens

50 T_high

correctio

n 20°C

51 T_high

correctio

n 85°C

52 Blocking

time

DHW>

53 T_CH_

Low_

max

54 P-factor

CH_low

-30°C Rh 30°C 0 Calibration / correction of the high temp sensor lower limit at 20°C

-30°C Rh 30°C 1 Calibration / correction of the high temp sensor upper limit at 85°C

0 =

switch

with

burner

1= 1

Rh 255 (=

minutes)

0 Delayed

changeover from DHW mode to CH mode

minute

10°C Rb 90°C 80 Safety

device

Duration of burner off period when changing from DHW mode to CH mode. 0 = Seamless change, burner stays on 1 = Delayed change, burner off = 1 min 2 = etc.

If T1 > T1 maximum temperature for 5 seconds. This value is always <= T_CH_High_max parameter 44. It limits the parameter 21.

0 Rb 255 30

P-factor for PI-control in CH-low mode

CH_

high

CH_

high

CH_

high

CH_

low

CH_

low

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

No Desc. Lower

Limit

Family Upper

Limit

Default

Value

Note Specification Pc

Screen

55 I-factor

CH_low

56 D_factor

_CH-low

57 CH_low_

Blocking_

time

58 T_Dhw_

max

59 P-factor

Dhw_

instantaneo

60 I-factor

DhW_

instantaneo

61 D-

factor_Dhw instantaneo

0 Rb 255 70 I-factor for PI-control in CH-low

mode

0 Rb 255 128 D-factor for PI-control in CH-low

mode

0 sec Rb 255 (=

minutes)

10°C S 117°C 70 Safety

0 S 255 30 P-factor for PI-control in DHW

0 S 255 70 I-factor for PI-control in DHW

0 S 255 128

0 Delayed

re-start of burner in CH mode

device

After the burner is switched off in CH-mode the burner is blocked for CH-mode for the blocking time

If T1 > T1 maximum temperature for 5 seconds

mode

D-factor for PI-control in DHW mode

CH_

low

CH_

low

CH_

low

DHW

62 P-factor

Dhw_

storage

63 I-factor

Dhw_

storage

64 D_factor_

Dhw_

storage

65 Dhw & ch

hysterese

_up

66 Dhw & ch

Hysterses

_down

67 T_tank_

Hyst_down

68 T_tank_

Hyst_up

0 S 255 30 P-factor for PI-control in DHW

mode

0 S 255 70 I-factor for PI-control in DHW

mode

0 S 255 128 D-factor for PI-control in DHW

mode

0°C S 80°C 1 Ex: 70°C+1°C = 71°C DHW

0°C S 80°C 50 Ex: 70°C-50°C = 20°C DHW

0°C S 20°C 5 Ex: 50°C+30°C-5°C = 75°C DHW

0°C S 20°C 3 Ex: 50°C+30°C+1°C = 81°C DHW

DHW

69 Post pump

time

DHW

HAMWORTHY HEATING LTD

(=min

utes)

S 255

(continual

function)

MILBORNE 500 SERIES

3 Pump

over-run DHW circuit

This is the post pump time after the DHW cylinder thermostat opens

500001130/A

DHW

No Desc. Lower

Family Upper

Limit

Default

Value

Note Specification Pc

Screen

70 Hyst_up_

Reduce_

burner

71 Hyst_down

_add_ burner

72 Hyst_up_

Quick_stop

73 Hyst_down

_quick_

Start

74 Quick_

Stop_

peroiod

75 Quick_

Start_

period

76 Wait_after

_burner_

Switched_

period

0°C P 20 2 Power

0°C P 20 5

0 P 80 4

Power

0 P 80 70 Ex: Set-This value = 10°C Power

0 sec P 255 sec 2

0 sec P 255 sec 30 Anti-cycle Time delay before burner can

Power

start after being switched off

77 Cycle_

limitation

78 Cycle_

Limit_

stop

79 Cycle_

Limit_

Inc

80 Burners

rotation

81 Flow switch

present on

the slaves

82 Return

sensor

present on

the slaves

83 Maximum

fan speed

for the slaves

0 P 1 0 Activates the cycle limitation on

Power the switching of the different burners

0 P 255 60 Power

0 P 50 10 Power

never

0 SL 1 0 No flow

P 255 hours 24 Lead boiler

rotation

switch on

After this number of hours the burners ignition order is changed

0 = The slave will not check for the flow switch function

Power

Slave

Milborne Boilers = 0

0 SL 1 1 0 = No slave check for open /

Slave shorted return sensor error. 1 = Return sensor present with control on Delta_T (par. 86)

20 (x

100)

SL 70 (X100) Gas

Type

Check with Parameter 36

This value automatically changes according to the gas selection (Gas type)

Slave

84 Minimum

fan speed

20 (x

100)

SL Gas type

for the slaves

HAMWORTHY HEATING LTD

max fan

speed

Gas

type

Check with Parameter 36

MILBORNE 500 SERIES

This value automatically changes according to the gas selection (Gas type). This value has to be <= Max_fan_speed.

Slave

500001130/A

No Desc. Lower

Family Upper

Limit

Default

Value

Note Specification Pc

Screen

85 Ignition fan

speed for

the slaves

86 Pre-purge

for the slaves

87 Flow_temp

erature_

Max_

slave

88 Return_

Temp_

Max_

slave

89 Flue_gas_

Temp_

Max_

slave

90 Flue gas

sensor

slave

Min

fan

speed

Min

fan

speed

SL Max fan

speed

SL Max fan

speed

Gas type

Check with Parameter

10 SL 117 90 Safety

option slave

10 SL 117 80 Safety

option slave

10 SL 117 80 Safety

option slave

0 =

blocki

SL 0 Safety

option slave

1 =

lock-

out

This value automatically changes according to the gas selection (Gas type)

If flow_temp > flow_temp_max for 5 secs > error

Ir return_temp > return_temp_max for 5 secs > error

If flue_gas_temp > flue_gas_temp_max for 5 secs > error

If there is an error on flue_gas_sensor, the burner has to be turned off for 10 minutes and the fan has to be activated at the maximum speed for the same time.

Slave

91 Flow temp

and return

temp slave

> max

temp.

92 Post pump

period

slave

93 Delta_max

_flow_

Return of

the slaves

94 Post pump

time 3rd 0 (=min

0 =

blocki

SL 0 Safety

options

Block = automatic restart of the boiler

1 =

lock-

out

0 =

post

SL 255 (=

continuous

function)

pump

1 = 1

min

10 SL 99 35 Delta_t = flow-return

Delta - t > par.93 = burner off Delta_t > par.93 - 5 = min power Delta_t < par.93 - 10 = no reduce power Para.93 - 10 < Delta_t < par.93 5 = Reduction of the power with a decrease of 60 / degrees

utes)

G 255 (=

continuos

function)

5 Pump over-

run

This is the post pump time after the last request for heat

Slave

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

No Desc. Lower

Family Upper

Limit

Default

Value

Note Specification Pc

Screen

95 Change

password

96 Hyst_up_

PID_I_ reduce

97 I_reduce

value

98 Low_load

waiting

0 G 99 22

If enter this

parameter,

Service Password Factory Password

first change

the service

password

(S 22), second can change the

factory

password

(F 44)

0°C P 10 1

For more details, see specification parameter 97

0 P 30 1 If the flow > = setpoint +

hyst_up_PID_I_reduce, the I_reduce_value will be subtracted from the high-byte of the sum of the errors. This causing the calculated power to reduce faster than on a normal Iaction.

0 sec P 255 sec 60 When the master detects that a

slave is at low load, the master waits this period to check if another slave is also at low load condition.

Power

Slave &

low load

99 Low_load_

period

slave

0 sec SL 255 sec 60 The low load is active when the

flow temperature of the boiler goes above the 85°C. The boiler waits 60 sec (low_load_period _slave). After 60 sec the boiler checks the flow temperature. If the temperature is lower than 85°C, the low load condition is deactivated.

Slow &

low load

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

20.0 Propane (LPG) firing (G31)

Note. It is strongly recommended that, on LPG installations, gas detection equipment is fitted. This equipment should be positioned near the boiler and at low level. It is important that the space housing the boiler is adequately ventilated at high and low level.

For single module installations, ie 1 x Milborne 501, the boiler must not be installed in a room or compartment located below ground level. BS6798.

For multiple module installations, ie 1 x Milborne 502 or greater, the boiler must not be installed in a plant room located below ground level. BS6644.

Installation.

The design and operation of the Milborne 500 series boiler using LPG-propane (3 that on Natural Gas (2

family) I3P is similar to

family) I2H and the design and installation details in the main body of this guide should be followed.

There are however differences in the construction and commissioning requirements of the propane boiler as follows. The propane boiler is supplied with a gas orifice sized 6.50mm dia. fitted to the gas valve/venturi assembly before leaving the factory. Full commissioning details are provided in the operation and commissioning manual.

LPG kits can also be supplied separately if required to convert the boilers from Natural Gas to LPG on site. To order additional LPG conversion kits please contact Hamworthy Heating Ltd to order the required number of kits quoting part number

573407132. One kit will be required for each 50kW module, ie;

Milborne 501 1 kits. Milborne 502 2 kits.

Full details for fitting the LPG kit to the boiler are provided in the operation and commissioning manual.

During commissioning the parameters must be set for propane firing to ensure correct fan speeds for ignition and operation are maintained. Hamworthy Heating Ltd strongly recommend that the Milborne 500 series boiler is commissioned by our engineers. This will ensure that the boiler is operating correctly and efficiently.

Table 20.1 - Technical Table LPG Firing

General Data

Milborne 501 Milborne 502

LPG

Gas flow rate -

1.93 3.86

m³/hr

Nominal gas inlet

37.5 37.5

pressure - mbar

Maximum gas

50 50 inlet pressure mbar

Gas orifice

6.50 6.50 diameter - mm dia

LPG Conversion Kit (HHL Part No. 573407132)

The LPG kit is supplied with 2 sizes of orifice. The 6.50mm orifice is used for the majority of installations. However, the 6.75mm orifice is occasionally used in special circumstances, see Section 21.7

21.0 Procedure for Converting boiler from Natural Gas to LPG.

21.1 Ensure that the boiler is isolated from both the electrical supply and the gas supply. Remove the front cover to gain access to the internal boiler assemblies.

21.2 Gas Valve and Inlet Assembly

Figure 21.2 shows the gas valve and air inlet assemblies of the boiler. Where the boiler has two (2) modules then both modules will need to be modified for LPG gas supply.

Figure 21.2

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

21.3 The following operations can be performed on the boiler in situ. For clarity purposes the illustrations show the assemblies removed from the boiler.

Gas Valve

Venturi

Figure 21.3

21.4 To separate the venturi from the gas valve remove the 3 screws as indicated in figure 21.4. When the parts are separated access to the gas valve air inlet passage is possible.

3 off securing screws

21.5 Gas Valve Air Inlet Passage

Following separation of the venturi from the gas valve the rubber seal will be clearly visible, see fig

21.5. All Milborne’s are supplied Natural Gas as standard so there will be no orifice fitted to the gas valve air inlet passage.

21.6 Fitting the LPG Orifice

The LPG orifice consists of a precisely drilled washer of 6.5mm internal diameter. This orifice is to be fitted in the gas valve air inlet port. There is no need to remove the rubber seal to complete this operation.

Gas Valve

LPG Orifice Location

Figure 21.4

Air Inlet, Passage and Seal

Throttle Screw

Figure 21.6

21.7 LPG Orifice Installed in Gas Valve

Figure 21.7 shows LPG gas orifice correctly located in the gas valve air inlet passage.

Offset Adjustment Screw

Figure 21.5

HAMWORTHY HEATING LTD

Pressure Test Point

MILBORNE 500 SERIES

Figure 21.7

500001130/A

NOTE: In certain circumstances it is necessary to fit a larger LPG orifice to the gas valve air inlet port. If poor ignition is experienced after commissioning the boiler then the larger orifice may be fitted. It is important to commission the boiler first, as correctly setting the gas valve offset for clean combustion may overcome initial poor ignition.

The alternative LPG orifice is sized at 6.75mm internal diameter and is fitted in exactly the same way as the 6.5mm diameter orifice. If fitting the larger orifice then the 6.5mm diameter orifice must first be removed.

Notes:

1. The procedure for modification and adjustment of the parameters at the Master Control Panel of the Milborne 501 and Milborne 502 Master Boilers is detailed in Section 19.0 of this manual.

2. Once the boiler has been modified for LPG firing it is essential to complete the full commissioning procedure to all boiler modules as detailed in Section 15.0

3. If after commissioning, the larger orifice has to be installed then the full commissioning procedure as detailed in Section 15.0 must again be completed.

Figure 21.8

21.8 Reassembly Procedure

Ensure that all the components that have been removed and modified are clean. Position the venturi to the gas valve and refit 3 screws that were previously removed in step 21.4. Ensure the 3 screws are securely tightened to prevent leaks at the venturi to gas valve joint.

21.9 Modifying the Boiler Parameter, Master Boiler Only

It is essential to modify the boiler parameter number 36 to identfy the type of gas being used. This must also take account of the flue length as indicated in the table below. To modify the parameter it is necessary to reinstate the gas and electrical supplies.

WARNING! As the boiler MUST NOT fire before the parameter is modified ensure that there is no demand for heat from any of the connected circuits and time clock controls.

Parameter Description Range Default Specification

HAMWORTHY HEATING LTD

Type of Gas

1-7

MILBORNE 500 SERIES

1= Natural Gas with equivalent flue length < 15m 2= Natural Gas with equivalent flue length > 15m 3= LPG with equivalent flue length < 15m 4= LPG with equivalent flue length > 15m

500001130/A

22.0 TECHNICAL DATA

Milborne 500 Series Performance and General Data Information

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

23.0 OPTIONS

HHL Ref: Description

573407130 Outside air sensor for provision of automatic weather compensation and frost

protection (SE)

573407129 Low temperature heating circuit water sensor for mixing valve modulation (SMbt)

573407128 24 Hour programmable room thermostat for low and high temperature heating circuits

(TAat, TAbt)

573407127 7 Day programmable room thermostat for low and high temperature heating circuits

(TAat, TAbt)

573407126 Hot water cylinder temperature sensor for secondary storage temperature (SB)

573407124 Pipework header kit PKS502 c/w valves for single 502 models (XKIT0351)

573407125 Pipework header kit PKD502 c/w valves for twin 502 installations (XKIT0353)

Not currently available Remote Control Unit

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

NOTES

INSTALLER SITE ADDRESS

BOILER TYPE BOILER SIZE(S) UNIT NO(S). SERIAL NO(S). FLUE

HAMWORTHY HEATING LTD

MILBORNE 500 SERIES

500001130/A

Notes

Poole Office

Hamworthy Heating Limited

Fleets Corner, Poole, Dorset BH17 0HH England Main switchboard tel: 01202 662500

Technical enquiries 01202 662527/662528 01202 665111 Spare parts 01202 662525 01202 665111 Service department 01202 662555 01202 662522

Birmingham Office

Hamworthy Heating Limited

Shady Lane, Great Barr, Birmingham B44 9ER Main switchboard tel: 0121 360 7000 fax: 0121 325 2309

General enquiries 0121 360 7000

• flue components

• packaged fan dilution systems

• bespoke flue components

• bespoke flue systems

• design and installation

spares@hamworthy-heating.com

service@hamworthy-heating.com

technical@hamworthy-heating.com

sales.flues@hamworthy-heating.com

Customer Services

Associate Companies, Offices and Agents throughout the World.

Hamworthy reserves the right to make changes and improvements which may necessitate alteration to the specification without prior notice.

Connect direct

Direct Dial Telephone and Fax Numbers

Direct Email Addresses

Hamworthy Heating Accredited Agents

Website

www.hamworthy-heating.com

• boilers

• controllers

• water heaters

• pressurisation sets

North West England

Gillies Modular Services

210-218 New Chester Road, Birkenhead, Merseyside L41 9BG tel: 0151 666 1030 fax: 0151 647 8101

Scotland

McDowall Modular Services

14-46 Lomond Street, Glasgow, Scotland G22 6JD tel: 0141 336 8795 fax: 0141 336 8954

Southern Ireland

HEVAC Limited

Naas Road, Dublin 12, Ireland tel: 00 3531 141 91919 fax: 00 3531 145 84806

Northern Ireland

HVAC Supplies Limited

Unit 2, Antrim Line Business Park, Sentry Lane, Newtownabbey BT36 8XX tel: 02890 849826 fax: 02890 847443

North East England

Allison Heating Products

17 Beech Road, South Shields, Tyne & Wear NE33 2QH tel: 0191 455 7898 fax: 0191 455 7899

Hamworthy Milborne 500, Milborne MB 501, Milborne MB 502 Design Installation, Commissioning And Operating Instructions

Specifications and Main Features

Frequently Asked Questions

User Manual