Manifold Pressure; Parts List - STA-RITE MAX-E-THERM SR400LP Instructions Pour L'installation

6. Remove the gas orifice and O-Ring contained in the
union nearest the combination gas control valve (cor-
rect union is next to sticker on gas pipe).
7. Install the O-Ring on the adjustment orifice (see Figure
4). Verify the correct size of the orifices included in
your kit (see Tables 1and 2).
Install O-Ring
Reconnect
Gas Line
Figure 4: Install Orifice; Reconnect Unions
8. Insert the adjustment orifice squarely in the gas line
union next to the combination gas valve.
9. Swing the gas loop and union half back into place
and tighten both unions securely.
10. Tighten the pipe clamp holding the gas line to the top
control support.
11. Replace the top jacket; tighten bolts.
12. Turn on heater. Observe it for smooth ignition and reg-
ular combustion without undue noise or pulsation.
13. Run heater for at least 10 minutes. After at least 10
minutes of continuous operation, insert a combustion
analyzer probe into the exhaust and measure CO
O . The recommended CO
2
gas combustion are listed below. Preferably, the read-
ings should be in the midrange.

Parts List

For Model No.
SR/SRC200NA
SR/SRC200NA
SR/SRC333NA
SR/SRC333NA
SR/SRC400NA, HD
SR/SRC400NA, HD
SR/SRC200LP
SR/SRC200LP
SR/SRC333LP
SR/SRC333LP
SR/SRC400LP
SR/SRC400LP
Install
Orifice
2809 0497
and O ranges for natural
2 2
Part Name
+5% Gas Orifice - NG
–5% Gas Orifice - NG
+5% Gas Orifice - NG
–5% Gas Orifice - NG
+5% Gas Orifice - NG
–5% Gas Orifice - NG
+5% Gas Orifice - LP
–5% Gas Orifice - LP
+5% Gas Orifice - LP
–5% Gas Orifice - LP
+5% Gas Orifice - LP
–5% Gas Orifice - LP
Gas Orifice O-Ring (All Kits)
Adjustment Kit Instructions, LPG and NG
Table 3: Flue Gas CO
Fuel
NG
LPG
Table 4: Nominal Orifice Sizes
Model
SR/SRC400NA, HD
SR/SRC333NA
SR/SRC200NA
SR/SRC400LP
SR/SRC333LP
SR/SRC200LP
Specifications
Inlet Pressure:
Max. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14" WC
Min. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4" WC

Manifold Pressure:

(Referenced to blower inlet tap). . . . . . . . . . . . . . -0.2" WC
Required Gas Input (BTU/Hr):
Model SR/SRC200. . . . . . . . . . . . . . . . . . . . . . . 200,000
Model SR/SRC333. . . . . . . . . . . . . . . . . . . . . . . 333,000
Model SR/SRC400. . . . . . . . . . . . . . . . . . . . . . . 399,990
or
2
Kit No. Size
77707-2331 .302"
77707-2331 .288"
77707-2321 .412"
77707-2321 .392"
77707-2311 .492"
77707-2311 .468"
77707-2361 .250"
77707-2361 .238"
77707-2351 .348"
77707-2351 .332"
77707-2341 .419"
77707-2341 .399"
4
and O
2
Recommended
CO
2
(Dry Basis)
8.0% – 9.0%
9.2% – 10.5%
Part
No. Stamp
42001-0311
42001-0321
42001-0331
42001-0341
42001-0351
42001-0361
Qty. Part No.
1 42001-0330
1 42001-0332
1 42001-0320
1 42001-0322
1 42001-0310
1 42001-0312
1 42001-0360
1 42001-0362
1 42001-0350
1 42001-O352
1 42001-0340
1 42001-0342
1 U9-370
1 S417
Ranges
2
Recommended
O
2
(Dry Basis)
5.3% – 7.0%
4.9% – 6.9%
ID
Size (")
A .480
B .402
C .295
D .409
E .340
F .244
Code
L
M
J
K
G
H
T
U
R
S
N
P