page no. 28 of 44
NVx Range Users, Installation & Servicing Instructions issue 6.4 Aug 2017.
NVxCCF 15-50 Centrifugal Close Coupled Fan Units
6
5
4
2
3
1
10
9
11
8
7
NO
CO
M
NC
R
/S
T
RP
N
L
P
ACT
RO
L
M
icr
o
G
as
P
25
CO
N
1
CO
N
4
CO
N
5
CO
N
3
CO
N
6
CO
N
7
JT
1
JT
2
W
ir
ing
Le
ge
nd
C
onne
c
ti
ons
m
a
de
by
C
ont
rol
boa
rd
A
s
s
e
m
bl
e
r
C
onne
c
ti
ons
m
a
de
by
Fi
na
l
A
s
s
e
m
bl
e
r
C
onne
c
ti
ons
m
a
de
by
I
ns
ta
ll
e
r
C
O
M
P
O
NE
NT
L
IS
T
P
ow
rm
a
ti
c
pa
rt
#
A.
Pactrol
Control
P25
B.
Honeywell
Fan/Limit
Thermostat
C.
High
Limit
Interlock
Board
D.
Air
Pressure
Switch
LGW3
A2
E.
Main
Gas
Valve
F.
Exhaust
/
Combustion
Fan
G.
Main
Fan
H.
6
Way
Hylec
Block
I.
NVx
Ver
2
Wiring
Loom
J.
Ignition
Electrode
K.
Rectification
Probe
L.
Fuse
Holder
5A
M.
Amber
Indicator
/
Reset
Button
N.
Engineers
Override
Switch
O.
Red
Indicator
/
Reset
Button
P.
Amber
Neon
Indicator
Q.
Red
Neon
Indicator
R.
Green
Neon
Indicator
S.
Jox
230v
Relay
T.
GM44
Modulating
Driver
PCB
U.
Modulating
Head
V.
High/Low
Driver
Head
W.
Cewal
Thermostat
X
i).
4
Pole
Plug
X
ii).
4
Pole
Socket
Y
. K
tec
C
o
n
tact
o
r/
O
ve
rl
o
ad
145
03084
5
1
43
00030
6
142
40360
0/
3
146
52217
4
Mo
d
el
sp
ec
if
ic
Mo
d
el
sp
ec
if
ic
Mo
d
el
sp
ec
if
c
143
10060
6
147
60010
1
Mo
d
el
sp
ec
if
ic
142
42300
3
143
00052
6
143
07027
6
143
10066
3
143
07027
4
143
10066
6
143
10066
1
143
10066
2
143
00081
6
142
40030
3
142
46640
3
142
46640
2
143
00053
4
141
36600
9
141
36601
0
143
01613
0
E
F
2
2
3
3
4
4
5
5
6
6
N
OT
E
S
M
ai
n
s
In
p
u
t:
230v
50H
z
1p
h
S
u
p
p
ly.
For
i
nput
pow
e
r
re
fe
r
to
Ins
ta
ll
a
ti
on
ins
tr
uc
ti
ons
.
W
a
rni
ng:
H
igh
v
ol
ta
ge
s
pr
e
s
e
nt
a
t
the
i
gni
ti
on
e
le
c
tr
ode
w
he
n
the
uni
t
a
tt
e
m
ps
t
o
li
ght
.
D
NC
NO
C
N
B
°C
°C
5
C
o
re
C
ab
le
Ye
l 0
.5
Wh
0
.5
B
r 0
.5
B
lu
0
.5
B
r 0
.5
B
lu
0
.5
G
ry
0.
7
5
B
r 0
.7
5
B
lk
0
.7
5
Y
e
l 0
.7
5
A
J
K
O
r 0
.5
7
7
8
8
9
9
10
10
12
12
13
13
14
14
15
15
16
16
O
M
P
R
17
17
11
11
FAN
LIMIT
Blu
0
.5
Wh
0
.5
Blk
0
.5
Blu
0
.5
Vi
0.5
Re
d 0
.5
Wh
0
.5
Blk
0
.5
B
lu
0
.5
B
lu
0
.5
Br
0.5
Vi
0.5
Blu
0
.5
Wh
0
.5
Br
0.5
Ye
l 0
.5
R
ed
0.
5
Y
e
l 0
.5
Vi
0.5
Gry
0
.5
Or
0.5
Or
0.5
Blk
0
.5
Wh
0
.5
L
Or
0.5
V
i 0
.5
Vi
0.5
Br
0.5
Blu
0
.5
B
lk
0
.5
Br
0.5
Br
0.5
Gry
B
lu
0
.5
Y
e
l 0
.5
Vi
0.5
Vi 0.5
B
lu
0
.5
B
r 0
.5
Y
e
l 0
.5
C
18
18
Q
Y
e
l 0
.5
Y
e
l 0
.5
1
1
I
N
A1
13
L3
L2
L1
A2
14
T3
T2
T1
Te
ch
na
Kte
c0
9
0
I
B
r 0
.7
5
Y
B
r 0
.5
B
r 0
.5
B
lu
0
.5
B
lu
0
.7
5
G
r/Y
e
l 0
.7
5
G
3 C
ore
Ca
ble
X
X
Blu
0
.5
W
h
0
.5
B
r 0
.5
Blu
0
.7
5
M
a
in
F
a
n
O
n
ly
2
3
0
V
In
p
u
t
Loc
k
out
I
ndi
c
a
tor
2
3
0
v
O
ut
put
L
o
c
k
o
u
t R
e
s
e
t -
N
e
u
tr
a
l S
w
it
c
h
E
x
te
rn
a
l C
o
n
tr
o
ls
C
onne
c
ti
o
ns
H
eat
D
em
an
d
230
V
I
n
p
u
t
(
N
ot
u
s
ed
on
B
M
S
M
odul
a
ti
ng
V
ar
ian
t)
0-
10V
(
M
o
d
u
lat
in
g
)
0
V
(
M
o
d
u
la
tin
g
N
e
g
a
tiv
e
) o
r 2
3
0
V
(
H
i-
F
ir
e
)
E
x
te
rna
l
C
ont
ro
ls
C
on
ne
c
ti
ons
f
or
H
igh-
Low
or
M
odul
a
ti
ng
V
a
ri
a
n
ts
N
O
T
E:
R
em
o
ve
M
o
d
e
L
in
k
'B
'
E
A
RT
H
NE
UT
RAL
L
IV
E
M
AI
NS
S
UP
P
L
Y
230
V
A
C
50
H
z
B
r 1
.5
N
L
H
L
N
B
lu
1
.5
B
lu
1
.5
C
OM
NO
NC
Ye
l 0
.5
S
