Alpha CombiMax Installation and Servicing Instructions

Installation and Servicing

Instructions

Alpha CombiMax

Secondary Circulation Kit

Suitable for use with the

CombiMax 350 and 600 Unvented Hot Water Store

CombiMax 350 - Secondary circulation kit - Part No. 1000461

CombiMax 600 - Secondary circulation kit - Part No. 1000466

For Technical help or for Service call ...

ALPHA HELPLINE

Tel: [phone]

Nepicar House, London Road,

Wrotham Heath, Sevenoaks,

Kent TN15 7RS

These instructions must be used in conjunction with the Installation instructions provided

with the selected combination boiler and CombiMax.

Leave these instructions with the User

CONTENTS

1 Introduction .............................Page 2

2 Schematic ......................................... 3

3 Installation information ....................... 4

4 Installation......................................... 4

5 Commissioning .......................Page 6

6 Operation .......................................... 7

7 Component replacement ................... 7

8 Short parts list ................................... 8

1 INTRODUCTION

A CombiMax 350 or 600 can be converted to enable a secondary circulation loop to be directly connected to it, thereby allowing
the supply of domestic hot water immediately a hot water tap is opened. An additional pump is not required to circulate the hot
water within the loop, as the CombiMax pump is used for this function.

Conversion of the CombiMax to enable the secondary circulation must only be carried out using the following kits:-

CombiMax 350 - Secondary circulation kit - Part No. 1000461
CombiMax 600 - Secondary circulation kit - Part No. 1000466

Note: It is only possible to fit the secondary circulation kit to a CombiMax produced after February 1999, i.e. after
Serial No. A90600001.

The kits include all pipework and components, i.e. thermostat, non-return valve and flow regulator, necessary to enable a
secondary circulation loop to be connected directly to the CombiMax as shown in Fig. 1.

Alpha CombiMax Secondary Circulation

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Fig. 1

2 SCHEMATIC

COMBIMAX SCHEMATIC - SECONDARY CIRCULATION

1. Gas service cock

2. On/Off valve and filter

3. On/Off valve

4. On/Off valve and filter

5. DHW pump

6. Pressure reducing valve with filter and check valve

7. Drain point

8. DHW expansion relief valve

9. Store thermostat

10. DHW expansion vessel

11. Manual air vent

12. DHW temperature/pressure relief valve

13. DHW outlet thermostat

14. Storage cylinder

15. Boiler flow control regulator

16. Non return valve

17. Recirculation thermostat

18. Restrictor

19. Immersion heater boss

Alpha CombiMax Secondary Circulation

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