Powrmatic LNVx Series Manual

I INSTRUCTIONS
INSIDE
HEATER MODEL / SIZE
LJ0 (/x- 60 E
SALES ORDER NUMBER
SERIAL NUMBER
POWRMATIC®
Further information is available from our website
www. powrmatic.co. uk

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Doc Ref: M1041ssue 1.2 Nov 2018
POWRMATIC ·
®
ErP COMPLIAN T
SEPlENIER 2018

Certificate Of Gu arantee
This is to certify thatthis heater is guaranteed for two years parts and one
oforiginal commissioning. The heater must be commissioned within4
To make aclaim
In the first instance you mustcontact your appliance supplier, or ii n <"." , ,, ',, nrl pro. '!.!Jl~ ~
1. The appliance type and se ri al number .
2. The origi nal commissioning documentation. As much d;~if.'~::;;~rm~
3. Your supp li er. or installer, wi ll then contact ~ your behalf .
Conditions of Guarantee
1. The heater must have bee n installed
-::;,,~;~~~~ and in
2,
3,
4.
5.
6.
7.
:. and local regulations.
weeks of installati on. and a copy of
~ ~;~;~:i.~ by a competent and qual i fied selV i cing
<co .rd'fl,e with the manufacturers ins truc tio ns .
has been used .
~~~ ~~~ ~;:r. ~ modifi cat i ons have been made . Powrmat ic' General Cond itions of
~:r~ j~~:~i~ ~~~ Powrmatic ltd to perform warranty repa i rs during the guarantee
~ li able in respect of any claim for di rect or i ndirect consequentia l
or increased cos t aris i ng from loss of use of the heater ,or any
~~: ? ~~~:; ~ ~ ~~:k;:~ Ignition elec t rodes, flame rectification electrodes , drive betts, fusible
i excluded from guarantee ,
9ilwrm"tic Ltd, Hort Bridge,lIminster, Somerset, TA19 9PS
Tel : [phone] Fax : [phone]
e-mail:[email protected]. uk
Important:This certificate
must
be kept with the appliance
F.lllure to provide .I copy of the commlsslonlnc sheet Inv.llldates the heater wllrrllnty

Con ten ts
Users. Installation and Servicing Instructions
CO NTENTS
Title Section Conten ts Page
User Instructions 4
Pre Installation
1. 1 Introduction 5
Duties 6
Dimensions 7
Options & Accessories 12
1.2 Technical data 14
1.3
General Require m ents
15
Installation 2.1 Fitting tne unit 19
2.2
Flue / Combust i on Air Duct System 22
2.3 General Identificationof Electrical Items 24
2.4 Electrical
Cable Installation 25
2.5 Wiring Diagrams
28
2.6 Comm i ssioning and Testing 30
2.7
Servicing
34
Additional Documents
3.1 Fault
Finding Flow Chart 38
3.2 Short Ust of Parts
41
Appendices
Information required for eco d es i gn (ErP) Direct ive2009/125 43
Warnings
Wh. n workl n, on th is appliance the folowlnc wam l nt_
mustbe ob .. rwd:
Warnln&:: Hot 5Ufta, ..
Dancer: ElKtrIclty
Wamlnl : Flammabl. Mat. rlall
Warnlnl:Contai ns Mowln, Pa rts
R ea d and underst ill d th is S.rvlce Manual
Instruc ti ons be for e operatlnc or se rvi dn,
this appliance

User Instructions
If the h@aterhasnotbeen left operational
proceed as follows .
AI Checks before operatin& the Air
Heater
The follow in g prellmlnarv checks should be made before
lighting the heater(sl
aJ Ensure that the ELECTRICAL supply to the heaterIS
switched OFF .
bl Check that any warm alf del very outlets are open.
c) Check thatthe thermostat Is set.
d) Che<k that the clock control is set to an ON perIOd
e) Check that any other controls are calling for heat.
BI Operatin& the Air Heater
1. SWitch on the electrical supplv at the Isolator
2. If the Red lim it in<hcator lamp IS illuminated, identJfy
the l imit stat , remove the black cap and press the reset
button.
3. The startup sequent!! wiN commence. After ashort
delay the burners wd lltghtand the green 'ON' indicator on
the frontof the heater Will be illuminated.
4.
lf the Dume!s fal to light the control box will
automatJeaJly restartt he Ignition sequence .Ifafter5
attempts at igni tion the burners have stit! fail ed to light
the control box will go to lockout and the Amber lockout
lamp
on the front of the heater (or on the low level remote
reset,
or M(200/M(300 iffitted) win be illuminated. To
restartthe ignition sequence depress the reset button on
thelow level reset for abO\Jt 1 ~ 2 seconds .
WARNING : If It II not polilble to II,ht the
heate, afte, leveral attemptl, contact the
Installe, or Iocallervlce company.
CI To Shut Down the Air Heater
1) For StMHt Perlodl:
Turn the room thermostat to the OFF ,or set to 'Summer
Mode'.
Complete smp 1 above. Wait for 5minutes and then tum
OFF the electrical sup plV at the isolator.
DI Description of Operation
Importilnt: The huter must NOT be
controlled
by swltchlnc ON and OFF the
mil ln electrlcil! supplV to tt.
1) Standilrd Units
The ignition sequence commences each time the elCternal
controls e.g. time clock , room thermostat, controller etc.
call for heat. The int ernal exha ust fan will run and. when
5I.Ifficient com bustion airflow Is proved by the air pre ssure
switch. the Ignition spark wtll be get\erated, the main
gas valve opens and the burners will l igh t on HIGH FIRE
for the first30 seconds Irrespective ofthe requirements
ofthe external control.
The green 'ON'lndicatorwill be
Inumlnated. The heaterfan will automatically start 30
seconds after the burners l ig ht Afterthe first 30 seconds ,
the heat
ou tput will then be con t ro ll ed eitherto high fire
or low fire depending on the requirements of the space
being heat~ and the ~ternal controls fitted. When the
external controls are satisfied the burners will be turt\ed
off and 2~ minutes la ter t he healer fan wiH automatically
stop. If the burners fall to light the contr ol box will make
another four attempts at Ignition before going into bumer
lockout. The amber 'Loc kout' Indicator/reset switch will be
Illuminated.
2) Modulatln, Units
When the burners are alight,the heat outputwill be
co ntrolled to any point between high and low fire;
depending
on the requirements ofthe space being heated
and the external contr ols fitted.
11 Summer I Winter Model
Certain types of external controls will provide for two
modes of operation
i.e:
Summer: The heater fan alone will run at the dictate 01
the external controls toprovide air movement.
Winter: The heaterwill operate normally.
.) Oveme"tThermostat
This operates if high temperatures within the heater are
detKted.the burt\ers are tutt\ed off and a Red Indicator
lamp on the front pa n el is Illuminated. LNVIC15· 70 units
have asingle thermostat located Inside t he healer.
LNVx35 & 90·140 units have an additional thermostat
on the side of the unit at the opposite end to the
controls (eit
he r thermostat can go to limit and shut off
the burners).
The faultcondition must be Identified and
rectified and the thermostat manua llyreset via the red
high limitreset switch. When the: unit has cooled. identify
the lim it stat, rem ove the black cap and press the re se t
button.
The red indicatorlamp will go out and the unit is
operational again .

Note: The limit tne rmostat(s) can on lvbe reset
once the unit has cooled down. Unless the
cause of t he f au lt co n di t ion is readilyobvious,
for example a power (ut whitst the heater was
operati ng .aservice en g in eer shou ldbecontacted.
E) Maintenance
To maintain efficient, reliableand safe operation of the
heater It must serviced annually bV a qualified person,
F) IMPORTANT
Free access must be maintained to and around the heater
for servicing purposes and the air supply to the heater
must not be restricted in any way .Combustible materials
must not
be stored adjacent to the heater.
If at any time a gas l eak is suspected, turn OFF the gas
supply at the meter and contact the local gas undertaking
Immediately.
The lNVl( range are high lyefficient, gas fi r ed, fanned
ctrC\Jlatlon air heaters thatcover heat outputs of 15kW to
140kW, have a closed combustion circuit and are supplied
complete with a nue system.
lNVl( heatersare certified for use on Natural Gas, Group
H- G20 ·. Appliance Categories are Cat 112H 1GB, IE). All
lNV)( heaters are CE certified and conform to all the
EUropean directives stated In section 1.3.1
l NVl( heaters are designed to be suspended fr om suitable
roof points or a1ternativelvto
be mounted on pur pose
designed brackets and are intended
primarily for heattng
commercial or
IndustriaJ premtses. All variants are for
internal use
on ly.
lNVl( Maters feature a closed combustJOrt cIrcuit and
have an internal eKhaust
fan, mounted downstream
of the heilt el(changer, to evacuilte t ile products of
combustion and draw in air for combustion. The air heater
must
be connected to a flue system that is approved by
Powrmatlc Ltd.
lNVl( heaters may be used where the atmosphere inside
the premises
could be contaminated e.g. Dust, oil mist
etc. butthe heaters are not
ai rtight and therefore may
not be used in areas cl aSSIfied as hazardous as defined in
as 5345: Part 2 or areas subjectedto significant negative
pressures due to el(tract systems,
Use r Instructions
All Powrmat lc heaters use gas and electricity to power
them, they may also contain movmg parts such as pulley s
and belts. It wou ld be hazardous to tamper with or
attempt to service
un less you are a competent pluson in
the field of Gas and Electri cal work .
If you have any safety questions reference the servicing
and installation
of any of our heaters please do not
hesitate to contact our head office for el(pert advice . Your
safety Is paramountto us.
Gas Safety (Installation. Un' (Amendment)
Aeculations
2018
It Is ~w that all cas appliances arelnst;aJled,
adJustltd and, If n.cessary,
conv.rt.d by
quallflltd p.rson s'" In accordance wtth the
curr.nt 'SIU. of the above reculatlons.
Fallur. to Inltall appil anc.I corr.ctly can lead to
prosKution. It II In your own I nt.r .sts a nd that of safety
to .nlur. that thalaw Is compllltd w fth .
•
Gas Safe Register@dEnglneer
1.1 Introduction
lNVl( F, lNVl( Duo and lNVl( Vheaters have an axial fan
assemblyfitted to circulate the
aJr being heated through
the formed tube heat exchanger.
lNVl( cn units are
supplied with a centrifugal fan and lNVl( 0 units for use
with ducted systems where the air
moving fan is by
others or a centrifugalfan section Is used adjacent to or
remote
from the heater.lNVl( OH units are for use in air
handling units.
Heaters are fitted
as standard with Ins hot burners, a fully
automatic control for igniti on, fl 2lme sen sing. gas supp ly
control and sa fety functions, an internal e)(haust r an,
main air fan IF and CCF models!, and fan/limit thermostat.
Options
include High/low or Modutating burner controls,
inlet duct connection, outlet duct connection. 30-, 45-
head, 90 -outlet bend, vertIcal/horizontal outlet louvre
assembly and a full range
of modular duct components.
IMPOATANT
SaNk' and Ma l nt.n . nce [nc l nurs shan
ensure that replacemant
It.ms are fitted,
adjusted and sat
In accordance wtth tha
data and d.tall
set out In thasa Inltructlons. If In doubt
conlult Powrmatk Techn ical Dapartment.
• LPG conllefSion /tits available.

Technica l Specificati on
LNVx
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Dimensio ns
LNVx F- FreeblowlIlg
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lNVxl'l.mgl' U')PfS 1"~'llh'ton&S(rV{nl" t J' I) <' /1 " I I

Dimensions
LNVx Duo- AXia l Fan BI-dlrectlonal Units
R
om
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om
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Dime nsions
LNVx V- AX i al Fan Downflow
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INVJ~ao,l' LJ",{'rsl!\~tJjlt'on&C, "n' 'r· , I, I 1 I

Dimensions
LNVx CCF- Cenlrlfugal Close Coupled Fan Units
Sll.~"~TSM10

Dimensions
LNVx D Dueled Heal Module (No fan)
~-- ,~ ~.
I NVx R.lflg~ lkl'rs In~tlll"tlon & \~" (r I •• Ie I • '1, r I

Heater Op tio ns
Mixing Bo)( -(LNVx (CF Models On I V)
..
Fan Plenum 80x - (LNVx eCF Models Onty)
Accessories
30" OownfJaw Head - (LNVx F Model s Only)
goo Oownflow Head -(lNVx (CF Models Onty)

I
I
,
Filter Bo)( - ILNVx ((F Models Only)
Vertical Louvres (For Use On All Models)
r-- '-
Acce sso ries
Swivel Wall Bracket - I LNV, F Mod.ls Onlvl
Cantilever Wall Brac ket - (LNVx FModels Onlv)
Not~
- DImensIons for the SWIVel and (anulever brackets reman thE' sam£' for aIIlNVx
mod",
- SWIVel Brackets can not be used WIth dolble lOts
"r.!~ "-I
LN\I'~Jng~ JSPt~I"'tllll t f()"', 'f, " ' J' , !, r

1.2 Technical Data
Injector Sizes & Bumer Pressures -Natural Gas -Group H - G20 Net (V (H i =34.02MJ/m')
Nominal Inlet
Pre ss ure . 20mbar
M inimum Inlet
Pressure ., 17.5mbar

1.3 General Requirements
1.3.1. Related Documents
AlIlNVx heat er s compl V wIth the follow in gEuropean
Directives'
EntrlV Re la ted Product Directive:
Gas Ap pliann Dired ive :
E lec tr om agnet ic Compatibility Directive:
lo w Vo lt age Di rective:
M ac hl n. ry Di rec ti ve:
2oo9/125/ £C"
200 9/1 4 2/£(
2 004 /108/£(
2006 1951 £(
20 06/421 E(
Air heater(sl must be Installed In accordance with 85 62 30
and 855440 pl us any re levant requirements of l ocal and
national bUilding codes . • wh~~ appropriate .
1.3.2 Location
Powrmatlc lNVx units ar£' deSIgned to opt-rate withl" an
ambient temperature range of ·10 to 25-C
LNVx heaters can be installed in several ways: i)
suspended from 'drop rods'via purpose designed M10
suspenslon fhdnl points on the healer, I i) attached to our
optional walt support brackets or Hi} positioned on al evel.
non-combustible base. In all cases ,it is importantthat all
supporting structures
have been assessed withregard to
the relevant weight loadings.
Coosideration should be given to flue routes and points of
exit,
gas, electrical and (ontrol connmions.ConsideratIon
should also be given to the throw characteristics of the
heater,issues of pub l ic access and siting of environmental
control stations andlor remote temperature sensors
where the position n eeds to be representative of the zone
temperature to which they refer.
Where the location ofthe ai r hea t er is such that itmight
suffer external mechanical damage
e.g .from overhead
cranes ,fork hft trucks, it must be suita bl y protected,
Heaters
should not be install ed in hazardous areas or
areas where there is aforeseeable fisk offlammable
or corrosion Inducing particies, gases orvapours being
drawn into the combustion airormain fan circu its.
Areas where specjaj consideration or advice may be
required could include but is notlimited to -
Where de-greasing solvents are present, even In
minute concentrations
Where paint spraying is cartled out
Where styrenes or other laminating products are
used
Where airborne silicone is present
Where petrol engine vehicles are stored or
maintained
Where dust Is present (Le. wood worki ng or
joinery shops)
Where high le vel s of (,lCtract persist
In stallat IO n In suc hareas may be poSSI ble under spe CIfi c
c
ondI tIons. Plea se cons u lt our Techn IC al Department for
furt
he r informatio n.
1.3.2.1 Sizing of th e heater
The heater s hould be correctly sized for the ar ea that it is
heating,
Full calculatIons need to be preformed to ensure
the correct KW output heater is fitted {CiBSE elemental
methodology
can be used ,or the Powrmatic Technical
Department can provide guidelines}.
1.3.3 Electrical Supply
Wiring external to the air heater must bl! Installed In
ac cordance with the I. E.E .Regulations for Electrical
Installations and any local rl!gulatJons which apply.
All standard heaters are supplied by 230V -1 ph, 50Hz.
The method of connectIon to the main electricitv supply
must:-
-facliitate the complete electrIcal isotation of the unit(s}
via asuitable fused isolator (see section 2.4.5 for ratings)
-be in a readi ly accessible position adjacent to the unit(s)
-
serve oNy the UM(S}
- have acontact separation ofat least 3mm in all poles .
See the accompa nyi ng wiring diagram for the heater
electrical connections
lNVx
(CF and fan/s~encer units can also be supplied for
400V 3N, 50Hz ,
1.3.4 Gas Supply
Aservicing valve and union to facilitate servicing must
be fitted to the gas I nl et pipe work of the heater. The
gas supply must be completed In so l id pIpe work and be
adequately supported.
Heaters
suspended by drop rods,straps or cha i ns must
have a fleX I ble connection as the final link between the
gas supplV pipe work and the heater.Sufficient sla ck
must
be left In the connection to take account of normal
movement ofthe heater.
WARNING:When compleUnc the final ps
connection to the heate, do not piau undul
strain on the ps pipe work of the heater.
1.3.4.1 Service Pipes
The l oca l gas undertaking shou ld be consulted at the
i ns tallation pl anning stage in order toestablish the
availability of
an adequate supply of gas to suitthe
1I!!.'if~ • .:'
(NV,R,)nl':rl)~f'>I"~IJIl,}tI3,&,>'r I I",' , '1 I I J

1.3 General Require ments
bUilding requirements. An existmg service pipe must not
be used wit hou t prior consultation with the l oc al gas
undertaking.
1.3.4.2 Meters
An existing meter should be checked, preferably bV the
gas undertaking. to ensure that the meter is adequate
to deal with the total rate of gas supplv required bVall
connected equipment.
1.3.4.3. Installation Pipes
Installation pipes should be fi tted In accordance with I GEI
UP/2 Pipe work from the meter to the air heater must be
of adequate sin.
Do not use pipes of a smalll?f size than the Inlet gas
connection of the heater.
The complete Installation must be tested for soundness
as ducribed in the above Code.
1.3.5 Flue System
Onlv flue 5vstl!mS supplied through Powrmatic ltd may
be used with lNVx units . Several configurations of flue
and combustion air du(.ts are avaUable .
The flue must terminate In a freelvexposed pOSition and
be Sited to prevent the products of combustion entering
any opening In a building msuch concentration as to be
prejudicial to health or a nuisance.
TVpe B22lnstaUation.
"
Type C12 or (32 Installation.
1.3.6 Ventilation Requirem ents
Type Bflued Inst~lI~tlons .
Where lNVx heaters are Installed within the heated
space lie not in a plant room or an enclosure) and having
a bUIlding deSIgn air change rate of greaterthan D.5/h .
additional
proviSion for ven tilation Is not required.
If the bllllding deSIgn air changE' tate is less than D.5/h ,
additional proviSion for natural or mechanical ventilation
is required.These being:
• Natu ral Ventilation:
Gr i lles having a free area of al least 2cm' per kW of rated
heat input shall
be provided at low levell.e. below the level
of the heaterflue connection.
• Mech anical Ventilation:
Must ensurethat the space air change rate is at least
D.5/h. must be of the 'input' type and interlocked to
ensure the heaters cannot
work If the input system Is not
warMing
Type Bflued Installations.
Where lNVx heaters are Installed In a plant room or
an IInclosur.II. •. not within the huted spac.) having
combustion air drawn direc tl yfrom the room and
connected to a flue thatevacuates the products of
combustion dlrectlv
from the room additional provision
for natural or mechanical ventilation 15 required.

•
• Natural Ventilation:
There must be permanentair v ent scommunicating
directly with the outs ide air, at hi gh l ellel and at low level.
Plant Rooms
l
ow lellel (in l et) 4cm'!kw of total rated net heat Input
High level (outlet) 2cm"kw of tota l rated net h eat input
Endosures
Low level (inlet) lOcm'/kw at total rated netheat input
High level (outlet) Scm"kw of total rated net heat Input
• Mechanical Ventilation:
The minimum fl ow rate of ventilation shall be 4.1 4m'/h
per ki l owat t of tota l rated heat input .
Type ( flued installations.
Whe re lNVx heaters i re Installed within the hnted
span ( I.e. not In a plant room or an MClo5ure) having
combustion air dueted to the: appliance and combustion
1.3 General Require ments
prod ucts dueled to the outSide .ur, NO additional
provision for the supplV of either co mbustion air or for
combustIon products dilutlon or additional provision for
the sup plV of aIr is necessary.
Type C f1ued Installations.
Where lNVx heaters are Installed In a plant room or
an enclosure (I.e . not withIn the heated space) having
combustion air due ted to the appliance and combustion
products ducte<! to theoutside, il lr vents shilll be
provided ilnd be permilnentlv open.
To room orIntarnal space
low levellinletl 10cm'/kw of total rated net heat inpu t
High level(outlet) 10crn'/kw of totalrated net heat Input
Direct to outside air
low level (inletl5cm'/kw of total fated net heat input
Hi gh level (outlet) 5c.m'/kw of total rated net heat inpul
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1.3 Gene ral Require ments
1.3.7 Air Distrib ution 5vstQm
Where lNVx F uruts arl! required to cover a large floor
area, and in bu ildings with high roof 01 ceiling heights
Calecon thermal economiset Units may be considered to
ensure even heat distribution and minimise stratIficatIOn.
(are should be taken to avoid Impeding the air throw with
tacking, partitions. plant or machinery etc. Various outlet
configurations are available as optiOnal extras to mOdify
the ai r throw pattern to suit partJcular site conditions.
~or lNVx CCF units, 1M dun work must comply to current
regul ations and be correctly caiculated to match the
particular heaters fesistance and air flow.
Afu
ll and unobstructed return air path to the air heater(sJ
must be provided.
1.3.7.1 Ducting RequiremQnts
If the an heater(s) arl! Installed In iI plant room, the return
air Intak@(s)andth@warmalr outl@tls)fromthe heat@r(s)
must b@fullvducted ,ln toandoutofth@plan t roomto
aVOid Interf@rencewlth the operation of the heater
The openings In the structure of the plant room/enclosure
through which
the dueting passes must be fire stopped.
(are must be taken to ensure that return-arr Intakes are
kept clear
of sour ces of smells and fumes, and where
there
is any possibili ty of pollution of the air bV dust,
shavings etc
., precautkms must be taken to prevent
contamination.
If necessary, suitable barrier railsshould be provided to
preventany combustible material being plac~ within
900mm of the outlets