REMEHA Quinta 45 Manuel

Remeha Quinta 45/65

• High-efficiency

condensing boilers for

wall mounted installation

• Output

Quinta 45 : 9 - 43 kW

Quinta 65 : 13 - 65 kW

Technical information

Remeha Quinta 45

Remeha Quinta 65

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TABLE OF CONTENTS

PREFACE 6

1 General description of the boiler 7

2 Construction 8

2.1 Boiler layout 8

2.2 Operating principle 9

3 Technical data and dimensions 10

3.1 Dimensions 10

3.2 Technical data 11

3.3 General Specification 12

4 Efficiency information 13

4.1 Annual efficiency 13

4.2 Heat to water efficiency 13

5 Application information 14

6 Control and safety equipment 15

6.1 The control panel 15

6.1.1 General 15

6.1.2 Layout of the control panel 15

6.1.3 Combined key functions (in operating mode only) 17

6.1.4 Display of values with more than two digits 18

6.2 Flow diagram control system 18

6.3 Operating mode (x[[) 20

6.4 Shut-off mode (bXX) 21

6.5 Setting mode user level (X[[) 22

6.5.1 Flow temperature set point (!) 23

6.5.2 Pump run on time HTG (@) 23

6.5.3 DHW temperature set point (3) 23

6.5.4 Boiler control setting (A) 24

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Remeha

Quinta 45/65

6.6 Setting mode service level (X00) 25

6.6.1 Flow temperature set point during forced part load ($) 27

6.6.2 High limit thermostat (%) 27

6.6.3 Fan speed at full load HTG (^) 27

6.6.4 Fan speed at part load (HTG and DHW - &) 27

6.6.5 Starting point modulation (*) 27

6.6.6 Interface selection (() 28

6.6.7 DHW cut-in temperature (B) 28

6.6.8 Fan Speed at DHW full load (C) 28

6.6.9 Forced part load time after start (HTG only - G) 28

6.6.10 DHW control stop set point (I) 29

6.6.11 DHW control option (J) 29

6.6.12 HTG cut in temp (N) 29

6.6.13 Boiler type (P) 29

6.6.14 Maximum delay time (U) 29

6.6.15 Start and end point analog signal (Qand Y) 30

6.7 Read-out mode (X00) 30

6.8 Fan speed mode (<00) 31

6.9 Failure mode (x00) 31

7 Installation instructions 32

7.1 General 32

7.2 Location 32

7.3 Flue gas discharge and air supply 33

7.3.1 General 33

7.3.2 Classification due to discharging flue gases 33

7.3.3 Material and installation 34

7.3.4 Single boiler conventional flue 35

7.3.5 Single boiler, room sealed flue 36

7.3.6 Different pressure zones 37

7.3.7 Modular installations 38

7.4 Hydraulic installation 38

7.4.1 Condensate discharge 38

7.4.2 Water treatment 38

7.4.3 Cold feed and expansion tank height for open vented systems 40

7.4.4 Safety valve 40

7.4.5 Gas connection 40

7.4.6 System pump 41

7.4.7 Waterflow 41

7.5 DHW production 41

7.6 Modular systems 42

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8 Electrical installation 43

8.1 General 43

8.2 Specifications 43

8.2.1 Electrical supply 43

8.2.2 Control box 43

8.2.3 Fuse specification 43

8.2.4 Boiler temperature control 44

8.2.5 High limit temperature protection 44

8.2.6 Low-water protection (flow and content) 44

8.3 External connections 45

8.4 Boiler control 46

8.4.1 Modulating (two wire control) 46

8.4.2 Analog control (0 -10 Volt dc) 48

8.4.3 On / off control (1 x no volt switched pair) 50

8.4.4 High / low control (2 x no volt switched pairs) 50

8.5 DHW control (Broag priority) 50

8.5.1 Temperature control 50

8.5.2 Primary flow control 50

8.6 System pump 50

8.7 Frost protection 50

8.8 Remote alarm and boiler run indication 50

8.9 Safety interlock 51

9 Commissioning 52

9.1 Initial lighting 52

9.2 Shut-down 54

9.2.1 Temporary shut-down with frost protection 54

9.2.2 Permanent shut-down without frost protection 54

10 Fault-finding 55

10.1 General (all installations) 55

10.2 Fault codes 56

11 Inspection and servicing instructions 60

11.1 General 60

11.2 Annual Inspection 60

11.3 Maintenance 61

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Remeha

Quinta 45/65

PREFACE

These technical instructions contain useful and important information for the correct

operation and maintenance of the Remeha HTG boilers, models Quinta 45 and

Quinta 65.

Read these instructions carefully before putting the boiler into operation, familiarise

yourself with it’s control functions and operation, strictly observing the instructions

given. Failure to do so may invalidate warranty or prevent the boiler from operating.

The installation and commissioning of the boiler must be carried out by a competent

Engineer, with the relevant certification ie: CORGI, ACOPS, IEE regs. etc.

On completion a copy of the commissioning sheet should be returned to Broag Ltd for

record purposes.

If you have any questions, or if you need more information about specific subjects

relating to this boiler, or it’s installation please do not hesitate to contact us.

The data published in these technical instructions is based on the latest information (at

date of publication) and may be subject to revisions.

We reserve the right to continuous development in both design and manufacture,

therefore any changes to the technology employed may not be retrospective nor may

we be obliged to adjust earlier supplies accordingly.

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1 GENERAL DESCRIPTION OF THE BOILER

The Remeha Quinta 45 and Quinta 65 are wall hung condensing boilers which may be

also installed free standing on a suitable frame (option). The one piece cast aluminium

heat exchanger and other major components are contained within a sealed air box.

This forms the main boiler casing with a removable front section for maintenance

purposes. All electrical and electronic controls are contained within the instrument

panel mounted behind the drop down lower front panel.

The combined flue gas outlet and combustion air inlet are mounted on the top of the

boiler with the flow, return, gas and condensate connections located at the bottom.

The boiler is suitable for room sealed or open flue applications and has been designed

for central heating and indirect hot water production at working pressures not

exceeding 4 bar. It must be installed on a fully pumped system and is suitable for use

on both sealed and open vented installations (minimum operating pressure of 0.3 bar).

The pre-mix, down firing gas burner (NG or LPG) with its gas/air ratio control system

ensures clean, trouble free operation with higher than average efficiencies of 110%

(NCV) in the condensing mode combined with ultra low NOx and minimum CO

emissions. The standard control package allows actual and set values to be read and

adjusted on the built in digital display which also provides normal operating and fault

code indication.

An intelligent, advanced boiler control ‘abc’ continuously monitors the boiler

conditions, varying the heat output to suit the system load. The control is able to react

to external “negative” influences in the rest of the system (flow rates, air / gas supply

problems) maintaining boiler output for as long as possible without resorting to a lock

out condition. At worst the boiler will reduce it’s output and/or shut down (shut-off

mode) awaiting the “negative” conditions to return to normal before re-starting.

The ‘abc’ control cannot override the standard flame safety controls.

The boilers meet the requirements of the EC regulations and directives:

- 90/396EEC Gas appliances directive

- 92/42/EEC Efficiency directive

- 73/23/EEC Electrical low voltage directive

- 89/336/EEC E.M.C. directive

- 97/23/EEC Pressure equipment directive PED (art. 3, sub.3)

Remeha Quinta 45 - reference-number: PIN 0063BL3253

Remeha Quinta 65 - reference-number: PIN 0063BL3253

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Remeha

Quinta 45/65

2 CONSTRUCTION

2.1 Boiler layout

Fig. 01 Boiler layout Remeha Quinta 45 and Quinta 65

pdf

1. Automatic air vent

2. Air supply fan

3. Gas combi-block (with governor)

4. Gas injector/venturi

5. Cast aluminium heat exchanger

6. Temperature sensor-return

7. Air inlet tube

8. Pressure gauge

9. Control panel

10. Facility for incorporating a rematic®

weather compensated boiler control

11. Heat exchanger inspection cover

12. Sight glass

13. Combined ignition/ionisation probe

14. Temperature sensor-flow

15. Pre-mix burner

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2.2 Operating principle

Combustion air is drawn into the closed air box by a variable speed fan, through the

air inlet connection from the plant room (open flued) or from outside via the concentric

flue system (room sealed). On the inlet side of the fan is a specially designed venturi

which is connected to the outlet side of the gas combi block.

Depending on the demand (under the dictates of flow/return sensor and other external/

internal control inputs) the electronic control unit directly monitors the volume of gas

and air being delivered to the premix burner. This mixture is initially ignited by the

combined ignition/ionisation probe which then monitors the state of the flame. Should

the flame not ignite or is unstable within the pre-set safety time cycle the controls will

shut the boiler down (after 5 attempts) requiring manual intervention to reset the boiler.

The digital display will also indicate a flashing fault code confirming the reason for the

failure.

The products of combustion in the form of hot flue gases are forced through the heat

exchanger transfering their heat to the system water (the flue gas temperature is

reduced to approximately 5°C above the temperature of the system return water) then

discharged via the condensate collector, vertically through the 80/125 mm (Quinta 45)

or 100/150 mm (Quinta 65) combined flue/air connection to atmosphere.

Because of the low flue gas exit temperature there will be a vapour cloud formed

at the flue gas terminal - this is not smoke, simply water vapour formed during the

combustion process.

If the controls allow the flow and therefore return temperature to fall below dew point

(55°C) this water vapour will begin to condense out in the boiler, transfering it’s latent

heat into the system water, increasing the output of the boiler without increasing the

gas consumption.

Condensation formed within the boiler and flue system is discharged from the boiler to

an external drain via the drain pan / siphon supplied.

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Remeha

Quinta 45/65

3 TECHNICAL DATA AND DIMENSIONS

3.1 Dimensions

Fig. 02 Dimensions Remeha Quinta 45 and Quinta 65

05W4H7900001 + 00W4H7900001

ÊReturn connection 1¼" BSP (m) & 1" BSP (f)

ÉFlow connection 1¼" BSP (m) & 1" BSP (f)

ÏGas connection ¾" BSP (m)

ÒCondensate connection 25 mm Ø o/d (plastic)

ÐCombustion air supply connection 125 mm Ø i/d (Quinta 45) and 150 Ø i/d

(Quinta 65)

** ÐCombustion air supply connection 80 mm Ø i/d (Quinta 45) and 100 Ø i/d

(Quinta 65),see Par. 7.3.1

ÑFlue gas connection 80 mm Ø i/d (Quinta 45) and 100 mm Ø i/d (Quinta 65)

ãHoles for mounting bracket

* Quinta 45 = 120 mm / Quinta 65 = 140 mm

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