AMBI-RAD RBI8HB, HBI8RB, RB30HB, HB30RB, HB22, ER13HB, HB13, ER22HB, HB22, ER38HB, HB38, AR13HB, HB13AR, AR22HB, HB22AR, AR35HB, HB35AR, RB 18HB, HB18RB, RB30HB, HB30RB, A13/DL, AR22DL, AR35/DL, RB 18DL, RB30/DL Installation Manual

Energy Efficient Heating Systems

INSTRUCTION

AND

INSTALLATION

MANUAL

FOR

I

THE

I

HERRINGBONE

I

COMBINED

I

FLUE

I

HEATING

I

SYSTEM

Doe ref: 134/6/92

J

INSTALLATION INSTRUCTIONS FOR AMBI-RAD ER/AR/RB/'U' TUBE

&

LINEAR HERRINGBONE HEATING SYSTEMS

AR22HB HEATER

REFLECTOR

FLUE TO

ATMOSPHERE

)

SUSPENSION

BRACKET

EMITTER TUBE

REFLECTOR

END CAP

-p>..:..'-.

.~

/

DAMPER ASSEMBLY -----

SUSPENSION

BRACKETS TYPE "B"

WITHOUT LOCATING

LUGS

SECONDARY

CONDENSATE

DRAIN IS

RECOMMENDED

.

~

CONDENSATE

DRAIN

STAINLESS STEEL SECTION

OF EMITTER TUBE

Fig. 1. Typical Herringbone heating arrangement using AR22HB and

HB22AR heaters.

HB22AR HEATER

Sin. DL FAN/FLUE CONNECTOR

TAPPING SCREWS

Sin. DIAMETER TWIN

_ WALL FLUE

TYPE 2

FAN/CONDENSATE BOX

WITH 2 CONTROL

DAMPER ASSEMBLIES

For' heater assembly instructions and fixing heights refer to:

ER UTUBE-

ER LINEAR-

AR UTUBE-

AR LINEAR-

RB UTUBE-

RB LINEAR-

ARDL-

Doe ref74

Doe ref 76

Doe ref7S

Doe ref77

Doe ref78

Doe ref79

Doe ref80

Fig.2. DL Heater arrangement.

1. GENERAL ARRANGEMENT OF AMBI-RAD HERRINGBONE SYSTEM

The Ambi-Rad Herringbone HB combined flue system may consist of either 'U' tube or linear heaters, linked into a common aluminium manifold system, which in turn is coupled to one hot gas vacuum fan to 'evacuate' the products of combustion to atmosphere.

Please refer to the Design Manual to ensure correct manifold design.

The following appliances are tested and certified by an accredited test house for use on natural gas and propane:

RBI8HB

HBI8RB

GC No 36 229 25

GC No 36 22928

RB30HB

HB30RB

GC No 36 229 27

GC No 36 229 29 HB22 GC No 36 229 02

A" each HB heater is self contained and independently commissioned, the design layout of a Herringbone heating system is very flexible and easy fo install.

The system is controlled via an Ambi-Rad black bulb thermostat whose controller is housed in a lockable cabinet with fan starter and time switch.

The Ambi-Rad Herringbone combined flue system manifold layout should be designed to be as compact as possible (but not essential) with the final connection to the hot gas vacuum fan approximately central in the manifold system.

Please refer to document ref 200/9/92 Ambi-Rad Herringbone Design Manual.

The manifold system should be arranged to fall slightly in the direction of the hot gas vacuum fan to ensure that any condensate formed in the manifold on cold start and cool down is not trapped or allowed to drain back into the heater unit so it will flow towards the condensate trap located at the vacuum fan end.

See Fig. (10) for Condensate Trap arrangement.

The tlue should be adequately supported from the building structure and installed in accordance with the British Standard

Code of Practice - Flues for Gas Appliances, Local and Ministry Authorities and Building Regulations.

Alternatively, a telescopic through the wall discharge duct is available for either Type 0, Type 1 or Type 2 (available from Ambi-Rad).

Ambi-Rad will, upon receipt of a proposed drawing showing a Herringbone combined flue system, check the pressure drop of the manifold system to ensure it does not exceed the hot gas vacuum fan design criteria.

1. 1 Standards

The Ambi-Rad heater must be installed in accordance with the relevant provisions of the Gas Safety (Installations and Use)

Regulations 1984 (as amended).

Due account should also be taken of any obligations arising from the Health and Safety at

Works etc. Act 1974.

In addition the installation must be carried out in accordance with the current

LE.E.

Regulations, The

Building (Standards) (Scotland) Consolidation Regulations, the requirements of BS.5440: Part 1, BS.6891: 1988, BS.6896:

1991 and any other relevant British Standards and Codes of Practice.

1.2 Ventilation Requirements

A flue pipe should be adequately supported at regular intervals from the building structure and terminated externally as sho\\:n in Fig.l

O.

The maximum flue length and maximum number of bends should be calculated in accordance with the

Ambi-Rad Herringbone Design Manual.

All connections in the flue pipe must be properly sealed.

Permanent ventilation is required as follows:-

Natural Ventilation (preferably at low level)

Up to and including 60kW - 4.5cm

2

/kW

Over 60kW - 270cm

2

+

2.25cm

2

/kW in excess of 60kW total input.

Forced Ventilation

Minimum proven air flow - 2.35 m

3

/h kW of total rated input.

For detailed information please refer to Ambi-Rad Design Manual and/or BS6896: 1991, Installation of Gas Fired Overhead

Radiant Heaters for Industrial and Commercial Heating.

2.0 MANIFOLD ASSEMBLY

After fixing the heaters in to the desired position, the manifold system should be laid out on the floor, where possible, to the design layout before erecting. All joints must be sealed with high temperature silicon jointing compound and components pop-riveted together.

See Fig. 3 and Fig. 4.

After allowing for a minimum of 50mm (2in) of penetration of the fitting into the tube, cut the tubes to the lengths required and remove all burrs and wipe off any grease or oil with a clean rag.

2. 1 Method of Jointing Aluminum Tube

Using the applicator gun exude a 4mm diameter bead of high temperature silicon jointing compound externally round the end of the fitting and internally round the end of the tube.

See Fig. (3).

2

Fig. 3

External bead of jointing compound

Enter the fitting into the tube using a slight rotating movement to spread the jointing compound uniformly until a penetration of 50mm (2in) is achieved.

Note: The silicon jointing compound remains workable after application for only five minutes.

Secure the joint by drilling through the tube and fitting and fix with three pop rivets at 12 o'clock, 4 o'clock and 8 o'clock positions. 3-5mm (3/16)dia. pop rivets are recommended. See Fig. (4).

t

Fig. 4

Important - fit rivets and jointing compound.

Top

Pop Rivets

Manifold tube

"

Note: Do not fix rivets in the underside of the tube in order to avoid risk of leakage of condensate.

2.2 Damper Assembly

The Damper Assembly secured to the outlet end of the heater unit must be located with its damper blade vertical and left in the closed position.

The manifold tube to be sealed and secured as described in Fig.3

&

4 above to the damper assembly.

For damper assembly see Fig. (5).

Fig. 5

Important - fit damper in vertical position.

Damper Blade

Damper securing screw _ _ _

~

Vacuum Test

,.....,r-4II"~----

Point

-H---B--f-t:.

-------+--.,........

Manifold tube

Pop Rivets

Joint ring not shown for clarity

'"

~

Emitter tube

3

2.3 Manifold Suspension

The manifold should be supported by chain, stainless steel flexible wire, or other flexible means from the roof structure to allow movement caused by thermal expansion. For maximum support centres, see Fig. (6).

Flexible couplers (supplied by Ambi-Rad) must be inserted within the manifold system to allow linear expansion to take place and prevent stress and strain on the system.

Note: The manifold must be supported either side of the flexible coupler.

Fig. 6

I l

Manifold Pipe Si••

75mm

& lOOmm

Maximum Distance Between Supports

L150mm

&

200mm

2.4m (8ft)

3.0m (lOft)

5 links

7 links

=

350

=

450

I

8 links

=

65°

----7

1/

i

,..-+-,

I "

I \

---;z-=t-

-r--t

I

'

.....

_~"",/

/

Centre line of manifold must not be higher than centre of emitter tube.

Fig. 7

Where the HB heaters are to be inclined wall mounted, the manifold must NOT be installed higher than the centre of the emitter tube. For typical wall mounting bracket arrangement see Fig.

(7).

2.4 Condensate Trap

A condensate trap assembly must be provided at the exit from the manifold and before the hot gas vacuum fan.

See Fig.

(lOa).

The minimum depth of the condensate collecting chamber shall be 305mm (l2in.) and the minimum depth of the condensate drain pipe 'U' Trap shall be 457mm (l8in.) deep.

The end of the collecting chamber to be fitted with a flush fitting flanged tank connector.

Any protusion to be removed leaving the inside flush with end cap.

See Fig. (l1).

The end cap to be sealed with silicon jointing compound and popriveted in position.

All condensate drains from the flue collecting chamber to the disposal point shall be of corrosion-resistant material of not less than 22mm internal diameter.

Copper or copper based alloy shall not be used for condensation drains.

See Ref: BS

6896: 1991. Condensate drain pipes must be protected against the effects of freezing.

Fig. Sa. Dimensions of Fan Outlet - Type 0 & Type 1 fan.

1._.

213 __

--------~

I

Fig. Sb. Outside Dimensions of Fan Outlet - Type 2 fan

. - --- -------------------- 190 ----------.- ------

----,-+~--_.t::

74

I

97

I

'---------------1."----10-

.J__

4 Holes 5.5mm dia.

Dimensions in mm.

3.0 FAN TO FLUE ARRANGEMENT

-820/s

T

1

The type '0', type '1' and type '2' Vacuum fans have bottom horizontal discharge with rectangular flanged connections and must be mounted in that position by means of the fan support stool onto a suitable platform or brackets fixed t<? the building structure.

For details of the fan outlet flange fixing holes see Fig. (8a & 8b). For details of fan mounting bracket and fixing down holes see Fig.(9).

4

I~

There are two recommended methods of discharging the products of combustion.

(a). A conventional flue arrangement using twin wall flue.

See Fig. (lOc) & (lOd).

(b). A telescopic through the wall flue with bird cage cover. See Fig. (lOe).

Where a conventional flue is to be installed, Ambi-Rad supply a stainless steel square to round transformation piece to which a 6" diameter twin wall flue should be attached.

The maximum length of flue which may be connected to the fan outlet must be calculated in accordance with the Ambi-Rad

Herringbone Design Manual Doc ref: 200/10/92 and must be adequately supported from the building structure.

Exhaust Flues should be installed in accordance with the British Standard Code of Practice BS.5440, Part 1 - Flues for Gas

Appliances, LE.E. Regulations, Local Ministry Authorities and Building Regulations.

DO'S AND DON'TS of HERRINGBONE SYSTEMS

DO's

1/. Do check design pressure drop.

2/. Do check for corrosive industrial processes in proposed building - e.g., cleaning, electroplating, printers using sugar powder etc.

3/. Do drain all flue ducts and seal all joints.

4/. Do secure joints with pop rivets as well as sealing compound. See Fig.3

&

4.

5/. Do fit drain traps before and after fans (see Fig.lO.).

6/. Do fit expansion joints before fan and at intermediate points on the Herringbone system.

7/. Do run drains in galvanised steel or plastic pipe.

8/. Do follow guide to Combined Flue Heating System.

DON'Ts

1/. Do not install system with extra 90 degree bends without asking Ambi-Rad if the system will operate correctly.

2/. Do not run drains in copper pipe as it will corrode.

3/. Do not install flue going upwards without fitting a drain point at lowest level.

4/. Do not fit fan with outlet pointing vertically upwards or with top horizontal discharge

5/. Do not fit damper assembly upside down or on its side. See Fig.(5).

Fig.9. Vaccum fan mounting details.

...

J

K

1:-

L

4 Holes '0' dia. in stool

FAN TYPE

0

1

2

A B

124 38

124 38

80 35

A

C D

175 7.1

175

7.1

174 7

For Fan discharge flange details see

Fig.Ba

& Bb.

E

-

--"-_.~---

- ----- -- - - -_.-

..

~

DIMENSIONS IN

F mm.

---G---H---T-- -

J

-

~

_._-

K

- -----

-~-

L

---

--,

_

..

209

153 42 239 340 332 363

209

125

153 42

100 25

239 296 332 363

120 210 205 215

--

5

Fig.IO. Conventional fan to flue arrangements.

!

I

Manifold supported

I by drop rod, s/s yable or chain

See Fig.11 for -_~ collecting chamber condensate outlet connection

_

Min. depth collecting ch~mber

Min. depth condensate

'U'trap assembly

Fig.IOa. High Fan Arrangement

Fig.IOc.

Tested and certificated terminal

Flexible coupling

\

22mm min internal diameter condensate drain pipes

Fig.IOb. Low Fan Arrangement Fig.IOd.

End cap to be pop riveted in position and sealed with silicon jointing compound

~

lki=====::;dl

Fig.IOe. Stainless steel telescopic through the wall arrangement (available for Type '0', Type I and

Type 2 Fans).

6

Fig.ll. Collecting Chamber Arrangement

4.0 Commissioning

Inspect installation and ensure it has been carried out in accordance with these instructions.

Ensure that electrical and gas supplies are isolated.

The gas supply should be purged and tested for soundness in accordance with the British Standard BS 6891: 1988,

BGIM!16

BGC Report 1M!2 and any other British Standards and Codes of Practice.

Ensure that the settings of any time switch and thermostat are such that the heating system will be required to operate (or put the mode switch to 'constant').

Before attempting to start up the heating system it is essential to perform the preliminary balancing of the vacuum level at each burner unit.

Isolate each heater unit by unplugging each electrical connector and closing each gas isolating valve.

Adjust the damper at exit of each heater using a 4mm hexagon wrench in the M8 locking screw.

Observing the vacuum reading using a

'V'

tube manometer connected to the vacuum test point (see Fig. 5.), set each damper in turn to give a hot conditions reading as below.

Fig.12 Damper Settings.

;

HEATER TYPE

DAMPER SEnlNG

HOT CONDITIONS

-~------t-----------

---

mbar

in.

w.g.

ER13HB

HB13

ER22HB

HB22

ER38HB

HB38

AR13HB

HB13AR

AR22HB

HB22AR

AR35HB

HB35AR

RB 18HB

HB18RB

RB30HB

HB30RB

and and and and

A13/DL

AR22DL

AR35/DL

RB 18DL

- - I---

1.67

1.52

1.22

1.00

0.40

f - - - - - - - - - - - - -

- - - - _ . _ ~ -

1.12

0.45

1.00

0.40

1.67

1.52

1.49

1.25

0.67

0.61

- - - - - - - - - - - - -------------

0.49

0.67

0.61

0.60

0.50

~

...

- -

1.02

1.00

0.41

0.40

- -

1.40

0.55

- - f - - - - - - - - - - - - - - - - - - - - - _._----

- - - - - ~

- r - - - -

1

1.40

-.

40

------

0.55

-----0:55---

1.00

0.44

and

RB30/DL

After initial setting of damper re-check when system is at equilibrium.

Referring Now to Each Individual Heater Unit

Open isolating valve and test gas connections for soundness using leak detecting solution. Remove the combustion chamber cover plate by unscrewing the fixing screws.

Take care not to damage the sealing gasket.

Inspect the burner and electrode assemblies ensuring these are securely fixed and all electrical connections securely made.

Replace the cover plate ensuring that the sealing gasket is correctly positioned and the screws are fully tightened.

The heater will not operate until this plate is refitted.

Remove the safety control housing cover plate by unscrewing the securing screws and folding downllifting off the plate.

Ensure all internal components are securely fixed and all connections securely made.

Reinsert the electrical connector to the burner control assembly.

To allow the heater to start up it is necessary to switch off the whole system at the timeswitch or manual switch and to allow the fan to stop completely before switching on again.

At this point the individual heater unit will start up with the following sequence.

The red "mains on" lamp will illuminate and the main fan will start to run. Safe-start checks are carried out automatically.

After the fan has run up to full speed and a satisfactory vacuum condition been established at the burner, a purge period of approximately 9 seconds will commence.

7

At the end of the purge period the ignition sequence will commence. The spark ignition will be energised producing a spark at the ignition electrode. The gas solenoid valve is energised and will open.

If ignition is successful the flame is detected by the flame sensing probe and the ignition spark is switched off.

The amber

"burner on" lamp indicates that the gas solenoid valve is energised.

If ignition is unsuccessful the gas valve is closed and the spark ignition de-energised after approximately 4 seconds.

After unsuccessful ignition attempt the electronic sequence controller will "lock out", the red "mains on" lamp only will remain illuminated.

To re-set this "lock out" condition, switch the power supply to the system, wait until the fan stops completely then re-start it.

If repeated lock-out occurs, investigate the cause.

Note that if an individual burner assembly unit is switched off and re-connected it cannot restart. The fan must stop running before the burner can be restarted.

To shut down the heaters switch off the power supply to the system.

Automatic control of the heating system is achieved through the lockable control panel, incorporated in the electrical supply, which may contain a time switch, Black Bulb

Controller with day and night settings, a 3 position mode switch giving constant on/off auto control and fan starter. It is essential to allow a delay of 30 seconds after switching off heaters before attempting to re-start the system.

If at any time after completion of the start up sequence loss of flame should occur, the electronic sequence controller will attempt to re-ignite.

If this is unsuccessful, heater lock-out will occur.

To set the burner gas pressure: Close gas valve.

Unplug mains input connector to heater.

Unscrew the fixing screws of the safety control housing lid and remove pressure test point screw and connect a

'u' tube manometer to the pressure test nipple (located between the pressure regulator and solenoid gas valve).

Remove the cover from the pressure regulator to reveal the adjusting screw.

Replace mains input connector, open gas valve and start system.

Using a suitable screwdriver, adjust the pressure regulator, turning the screw clockwise to increase the pressure or anticlockwise to decrease the pressure.

Set the burner pressure to the required figure given on the data label.

Switch off the heater by pulling out the mains connector.

Disconnect

'u' tube manometer and refit screw in pressure test nipple.

Refit cover of pressure regulator. Replace cover plate on safety control housing and refit screws.

To re-ignite heater, switch system off at control panel. Wait until fan stops completely and then re-start system.

Check the operation of the flame safeguard equipment as follows: With the heater running normally switch off the gas supply at the appliance isolating valve.

Observe that the "burner on" lamp extinguishes within one second.

After a purge period of approximately 9 seconds the heater should attempt to relight and if the gas isolating valves have been left off, lockout should occur, indicated by power light only being illuminated and fan running.

Check the operation of the vacuum proving switch as follows: With the heater running normally, pull out the mains input connector.

Pull off the silicone tube connecting the vacuum switch to the combustion chamber.

Observe for at least 20 seconds that there is no attempt to re-ignite. Then replace the silicone tube.

Replace the safety control housing lid and re-connect the mains input connector.

To re-ignite each heater in the system, the fan must stop running.

Switch system off at the control panel.

Wait until fan stops completely and then restart system.

Repeat the above procedure for each of the heater units in the heating system.

IMPORTANT

When all the heaters have been commissioned as above, the vacuum settings must be finally balanced in the hot condition.

Start all burners up and allow them to run for at least 20 minutes. With the use of a

'u' tube manometer determine vacuum reading at the damper assembly on each heater.

See Fig. 5. for vacuum test point.

The damper should be re-adjusted and set at a hot conditions reading as shown in Fig.12 for the appropriate size heater and model.

It will be noted that the emitter tube has a tendency to bow when hot, this is normal and quite acceptable.

s.o

CONTROL SYSTEMS.

The control system must be installed in accordance with the design specification.

8

5. 1 Control Panel Design

Ambi-Rad control panels are available either as standard units to control single or multiple zones of heaters utilising the

Ambi-Rad Black Bulb radiant thermostat. Special control functions are available on request.

If a Herringbone control panel is used the following logic to operate in a safe and satisfactory manner is necessary:-

Fig.13. Logic Sequence for Herringbone Control Panel.

POWER ONTO PANEL

Mode

SLtCh

in off position

Mode

t

witch in auto po sition

I

Mode Switch in constant position

(one or all zones)

No heaters on

TIM~

CL6cK OFF

I

Break contacts

8

&

9 on Black

Bulb Controller

I

Control on night temperature setting for frost protection

TIME CL6cK ON

1-

1-

Make contacts 8 & 9 on Black

Bulb Controller (via relay or Time

Clock Contacts for each zone)

1

Control on day temperature setting

I

~----------------~------------------­

Call for heat by Black Bulb Controller controlling each zone or all heaters.

.

(Possible alternative control function to over ride temperature controller)

I

Delay start of Herringbone Fan for 30 seconds to ensure Vacuum Switch on heaters is broken (only required for 2 zones or more on one fan)

I

Start Herringbone Fan

I

Power to individual heaters or zone of heaters

I

Individual Heater Vacuum Switch senses combustion vacuum

I

Individual heaters start ignition sequences

I

Zone control switches off

I

Other zones carry on firing (if fitted)

I

Zone control calls for heat

I

Power off to all heaters or zones and to stop Herringbone Fan

5.2 Installation of Control Panel

To Install the Ambi-Rad control panel remove the plastic plugs from the four 9mm diameter holes in the back of the control box.

Using these holes fix the box in a convenient position to a suitable plugged wall or solid structure with No. 10 gauge woodscrews or 6rnm diameter bolts or set screws.

Access to the holes may be gained from the inside of the box without the necessity of removing the wiring chassis.

Make the electrical connections in accordance with Fig.14 and cut holes in the removable gland plate provided in the box. Conduit or strain relief glands should be used.

9

Fig.14a Herringbone Control Panel wiring diagram for Type 0 and Type 1 fans (single phase) incorporating the

ARBB65 Black Bulb Control Thermostat.

z

-6"f; -

I

I

I

1

11

1

~ is

!

1

1

...J

1

Si

If

I

4~

~

~

.

S.

1 - - - ' o

0

F-~~:

L

- -

:}i

~

~JI ~

•

I

&

~

I

I

-I

----i

I

I

w:

T.S.C.o- AI&!

Ojl.

as

CM:RLOAD

1l£RMOSTAlIC CONlRClLLER c.R. -

Q.OCI(

RELAY

CASINET: fAH

SAR£LL.

1017

CONTACnlR: TJW LC1-D011OUS

O\9LOAO:

MODE SWITai:

TJW

LR2-D'1307

TJW 282-81103

ICEmWTOt:

EXTRA

TJW 2B2-BGO

CONTACT: T/W Z82-8E101 (N.o.)

DOOR ISOlA'RlR: KilN KQ2QA4OO\£ a.oac:

~11-72/1

AlTERNA1I'<e WAY BE USED II1H PRIOR

CONSENT

(F

AaB-RAD LII1ED.

SET O\f:RlOAD RAlING AT

~1E: FOR

1.8

AMPS (TYPE 1 FAH ONL't)

SET O'tfRLOAD RAlItO AT 3.8 AWPS

CnPE

0 fAH ONL't) nPE

0 FAH USE 10

NIP

WAItS

FUSE

Fig.14b. Wiring diagram for Type 1 fan (three phase).

I

TO fAN o

~

.-:

1 - - - '

.

I-=--+~;

:}

- i

~JI

:

~

.

I

&

~

-,

I

I

I

I

>z~

L

--.J

I f

1~-0t4:

~ ~ ~O-<:»«}---------_--I sx.

T.S.c.o- AIR as

1l£RMOSTAlIC c.R. -

Q.OCI(

RELAY·

CClN1RCl.lJ

Ojl.

- O'tULOAD

SET O'tf:RLOAD RA11NG AT 0.8 AWPS

CABINET:

FAN

OYERLOAD:

SAREJJ.

CONTACnlR:

1017

T/W LC1-D011OUS

TJW LR2-D'13Ol5

MODE SWITat: T/W

Z82-.BZ1OJ

I<EYSWTQt:

TJW

Z82-eGO

EXlRA CONTACT: T/W Z82-8E101 CN-o.)

DOOR ISCI..A'RlR: KilN KG2QA4OCM: a.oac:

GRASSUN 11-72/1

AlTERNA1I'<e MAY BE USED .-rH PRIOR

CONSENT

(F

MI8I-RAD LMlED.

10

Fig.14c. Wiring diagram for Type 2 fan (single phase).

240v 1PH 50Hz t1

L

GRASSUN 16-72/1

(!)

N t - - - - - - - - - - - - - t t2

2

H.C.

H.O.

B.B.T.S.

ZONE 0

10

{~ l - - - - - - - - - - -

T5 it

TO

~~ ~J

SENSOR

T3 T4

EXTERNAL

FUSED

ISOLATOR

SUPPLIED

BY OTHERS

~I

MAINS

INPUT

TO TO nQ

B.B.T.S.

C.R.

N.O.

N.C.

TO BURNERS z.o.

ABBREVlA nONS

FACIA MOUNTED BLACK BULB

TIiERMOSTAT CONTROu.ER

CLOCK RELAY

NORMALLY OPEN CONTACTS

NORMALLY CLOSED CONTACTS

Vacuum fan characteristics.

FAN TYPE POWER kW

'0'

1

1

2*

*Overload not required.

550

430

250

120

RUNNING CURRENT A

(overload rating)

3.8

1.8

0.8

0.8

5.3 Control Panel Timer and Black Bulb Thermostat Controller

PHASE

Single

Single

Three

Single

VOLTAGE V

The Grasslin 16/72/1 Digital Time Switch fitted to Ambi-Rad Control Panels should be set as follows:-

240

240

415

240

1. Check the main electricity supply is connected.

2.

Use pencil or similar instrument, press reset button

- After five seconds window displays

00:00.

3.

Depress +/- button to advance time by 1 hour for

British Summer Time.

Depress once to cancel

1 hour advance.

TO SET DAY AND TIME

4.

Depress

<9 button continuously whilst setting day and time.

5.

Depress day button until correct day appears in window.

6.

To set time - depress h+ m+.

7.

After setting day and time release

(9 button.

Clock will commence working after five seconds.

PROGRAMMING

8.

Depress button CHI - window will display .. :..

9.

Depress day button to set "on" days required.

(a) Press once for 7 day display.

(b) Press again for 5 day display.

11

(c) Press again for Sat. and Sun only.

(d) Press again for individual days.

10.

To set switching "on" times to suit day programme depress h+ m+ button.

11.

To lock in the "on" programme - depress CHI button.

12. To set switching "off" time depress CHI button.

13. Depress day button to set "off' days required.

14.

Using buttons h+ m+ set switching "off' days required.

15.

To lock in the "off" programme depress CHI button.

16.

After setting "on-off" programme, depress button

0 to reinstate day and time window.

17. To manually override programme, depress

~

1 button - "on" or "off' will be displayed in window.

NOTE:

If buttons h+ m+ are depressed for longer than 2 seconds rapid advance will take place.

FOR FULL OPERATING INSTRUCTIONS

REFER TO MANUFACTURER'S OPERATING

INSTRUCTIONS.

Fig.IS. Time Switch and Facia Mounted Black Bulb Controller

Constant Night (

Red light on

Temp. control on night setting only

(Day setting has no effect)

Green light:-

On- heaters on

Off- heaters off

Clock switch has no effect, not in circuit

Controller off

0

Both red and green lights extinguished

Heaters/zone(s) off

Key to mode switch symbols o

Off C Night

(J

Day

TIME SWITCH FUNCTIONS FOR 16-72/1 TIME SWITCH

- -

Summer Time

Control

Display

, /

Time Button

0

0

0

0

0

0

~j

:::::-

-

Day rim.

Display

______

. 0 - - -

Manual Override

Programme

~

Button

- e -

Constant Day

Red light on

(I

Temp. control on night setting only

(Night setting has no effect)

Green light:-

On- heaters on

Off- heaters off

Clock switch has no effect, not in circuit

Red 'power to controller' light

Green 'Heaters on' light

B.B.T.S. Controller

Night/Day ( / i)

I

1'0 0

~J

·~(@G

I i)

I

Mode Switch

(

O·

- I -

Red light on

During day clock indicates on

During night clock indicates off

I

I

DayTet"fllsetting NightTet"fllSetli1g

Green light:

On- heaters on

Off- heaters off

Note that the ( and l) settings on the controller mode switch override the operation of the clock.

The ( / l) settings only brings the clock into effect.

The

0 setting switches off the heaters/zone completely.

E

E o o

75mm

Cover screws

1.......8

Black Bulb

Radiant Sensor

G)

Alternative rear entry cable hole

~ableentry gland

Fig.16. Sensor Unit.

Instructions for fixing Sensor unit.

1. A position should be selected 1.5m from the floor where the sensor will be free from undue draughts and if necessary between 4 and 5m from one of the heaters to be controlled.

Avoid placing the sensor where it will be in an area shadowed from radiant heat (behind racking etc.).

2.

Remove the cover of the sensor unit by undoing the four screws.

3. Fix the base to the wall with two screws.

4.

Connect the sensor using a three core cable of not less than

O.5mm

2.

Maximum length of cable is 200m if O.5mm

2 is used.

Secure wires in the cable gland provided (alternative rear cable entry available - remove gland and seal with grommet if rear entry used).

5.

Wire sensor to controller in accordance with wiring diagram. See section (5).

6. Refit the sensor to the base.

5.3

Fan Starter Overload

{

The red "reset" button on the fan starter is used only to restart the fan should it cut out due to overload or malfunction.

Should repeated lock-out occur, then a qualified electrician should be consulted.

6.0 SERVICE INSTRUCTIONS

Under normal working conditions, it is recommended that the Ambi-Rad heater has a routine service once per year.

In exceptionally dirty or dusty conditions, more frequent servicing may be desirable. Servicing work should be carried out by a qualified gas servicing engineer.

For heater routine service, trouble shooting checklist and spares list, please refer to the appropriate ER, AR or RB heater model section.

12

NOTES

USER INSTRUCTIONS FOR AMBI-RAD

HERRINGBONE HEATERS.

AMBI-RAD is an overhead radiant heating system for industrial and commercial buildings.

The AMBI-RAD heater is suspended horizontally overhead from the roof or inclined mounted and heats by radiation in the same way as the sun.

2

3

IMPORTANT

This appliance must only be installed by a competent person in accordance with the requirements of the Gas Safety (Installation & Use) Regulations 1984 (as amended) and the Health and Safety at Work etc. Act 1974.

WARNING: THIS APPLIANCE MUST BE EARTHED.

Never rest anything, especially ladders, against the heater.

To start the AMBI-RAD heater:

First ensure that the gas supply to the heater is turned on.

2

3

Ensure that the settings of any time-switch and thermostat are such that the heating system will be required to operate

Switch on electrical supply to heater.

Mains light, coloured red, will illuminate and ignition sequence will commence.

4

5

After completion of an air purge period, ignition of the burner will occur and burner light, amber, will illuminate.

If ignition attempt fails, burner sequence controller will lock out with mains light only illuminated.

6 If lock out occurs switch off electrical supply, wait 15 seconds then switch on again.

If lock out occurs again switch off heater and call service engineer.

N.B. Heater will have tendency to bow when hot, but this is quite acceptable.

To switch off AMBI-RAD heater.

Switch off electrical supply to the heater.

The burner will shut off and the fan will stop.

If the heater is switched off for periods in excess of one week it is highly recommended that both gas and electrical supplies are turned off.

Servicing:

To ensure continued efficient and safe operation it is recommended that the heater is serviced regularly by a competent person, e.g., every year in normal working conditions but in exceptionally dusty or polluted conditions more frequent servicing may be required.

The manufacturer, whose address is given below, offers a maintenance service Details available on request.

Because of our policy of continuous development Ambi-Rad limited reserves the right to vary the equipment specification without notice.

Energy Efficient Heating Systems

p.a.

Box 30,

Mucklow Hill, Halesowen, West Midlands.

B6280S

Tel: 0121 5030707. Fax: 0121 501 2955