of position
C. Too much combustion air (Air shutter open too wide)

8. Retention Ring Cokes

A. Defective nozzle
B. Cone, choke and nozzle out of adjustment (See Figure 1)
C. Fluttering starts

_DOMESTIC HOT WATER_

In order to obtain the rated capacity of the instantaneous domestic hot
water coil limit control should be set to maintain 200 deg. F boiler water
temperature.

Flow regulator and tempering valve should be installed on all
instantaneous domestic hot water coil systems.

_BURNER SETTING_

The burner is adjusted at the factory before shipment but in case of
improper operation at some future date Figure 1 will show proper
setting. In all cases the flame retention ring should be concentric with
the choke.

[Illustration: FIGURE 1]

+--------+----------------+-----------------------+--------+---------+
| MODEL | NOZZLE | CHOKE RING | "A" | I. D. |
| NO. | DELAVAN SIZE | NO. & DIAMETER | DIM. | VANES |
+--------+----------------+-----------------------+--------+---------+
| 87CPO | 1.25 GPH 70 deg. A | 142640-002 2-5/8 D | FLUSH | 2-25/32 |
| 108CPO | 1.65 GPH 60 deg. A | 142641 2-31/32 D | -3/16" | 2-25/32 |
| 128CPO | 2.00 GPH 70 deg. A | 142641-003 2-31/32 D | +1/4" | 2-29/32 |
+--------+----------------+-----------------------+--------+---------+

[Illustration: (parts listed counter-clockwise from left side)

Tubes
37CP19
08CP19
728CP19
4CP25
40624
144539
134955
144538
131798
131651
140734
142743
R8184G
V4046A-16
1R111B-1BP
140611
141741
144691
141740
MM1163
141646-G03
140606]

End of the Project Gutenberg EBook of Installation and Operation
Instructions For Custom Mark III CP Series Oil Fired Unit, by Anonymous

*** END OF THIS PROJECT GUTENBERG EBOOK OIL FIRED UNIT ***

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