S
ERIES
2000 I
NSTALLATION
, O
PERATION
AND
S
ERVICE
M
ANUAL
76
21.4 Manifold and Controls
21.5 Burner
Manifold
Periodically check gas control assembly and internal and external piping for
leaks. Relief
v
ent lines to o
u
tdoors on gas controls sho
u
ld be checked to
ens
u
re against blockage ca
u
sed by insects or any other s
u
bstance. Clean as
req
u
ired.
All gas piping to the air handler m
u
st comply
w
ith the National F
u
el Gas Code
- NFPA54, latest edition and all local codes. Verify gas so
u
ndness of each
SSOV (Safety Sh
u
t Off Val
v
e). This test m
u
st be repeated after the first 100
ho
u
rs of operation.
See Page 40, Figure 19
through Page 41, Figure 21
.
Air Flow Switch
An ann
u
al check of the t
u
bes attached to the air flo
w
s
w
itch sho
u
ld be made
to ens
u
re against blockage ca
u
sed by insects or any other s
u
bstance. Clean
as req
u
ired.
See Page 66, Section 20.4
.
Electric Components
Check for physical damage on any of the electric components and
v
erify all
electrical connections are sec
u
re. Ens
u
re eq
u
ipment is properly gro
u
nded.
Temperature Sensors
Calibrate space, o
u
tdoor air, and discharge air sensors as req
u
ired.
See Page 66, Section 20.2.3
.
An ann
u
al inspection of the b
u
rner and components m
u
st be made to ens
u
re
proper and safe operation. For the most part, the b
u
rner is self cleaning.
Ho
w
e
v
er, if the application is extremely dirty or d
u
sty, it may become neces-
sary to periodically clean the b
u
rner. Inspect and clean the b
u
rner in accor-
dance
w
ith the follo
w
ing recommended proced
u
res:
1. To
a
v
oid damaging the
v
al
v
es, disconnect the b
u
rner piping from the
manifold, at the
u
nion, and co
v
er the exposed end of the manifold.
See
Page 40, Figure 19
through Page 41, Figure 21
.
2.
Remo
v
e the pilot assembly.
See Page 46, Section 16.6.4
.
3.
Remo
v
e the ignition cable from the igniter on the side of the b
u
rner, and
then remo
v
e the spark igniter. Clean the igniter contacts
w
ith a
w
ire
br
u
sh. Set the gap to 0.125" (3.17 mm).
4.
Inspect each of the stainless steel mixing plates to see that all of the air
holes are free of debris. Clean
w
ith a
w
ire br
u
sh as necessary.
5.
The b
u
rner orifices may need to be drilled to
u
npl
u
g any closed orifices.
Use a pin
v
ise
w
ith the appropriate drill to clean debris from the orifices.
An electric drill is not s
u
ggested beca
u
se it is easy to snap drill bits off
in the orifices.
6.
Reinstall the pilot assembly. Reconnect the b
u
rner piping to the mani-
fold at the
u
nion.
