COX SO-225, SO-300, SO-400, HO-225, HO-300 Installation And Operator's Manual

Heating

Products

Commercial

Furnace

Installation

And

Operator’s

Manual

Nov-99

Cox systems are shipped “ready to use”. All Employ qualified, experienced installers, to
necessary standard equipment, controls, and wiring insure the safe and efficient operation of your
are packaged with the heating systems. heating system.
Use the supplied furnace and burner manual,
together, to install the system.

TABLE OF CONTENTS

PACKING PROCEDURE…………2 SEQUENCE OF OPERATION…….. 8

FURNACE ASSEMBLY MAINTENANCE………………….. 9
DRAWINGS ….………………….. 3
WIRING DIAGRAM……………….10
FURNACE SPECIFICATIONS..…4
MISCELLANEOUS……………….. 11
CLEARANCES……………………5 A. FILTER RACK ……………….. 11

B. DRAFT HOOD ……………….. 11
INSTALLATION INSTRUCTIONS C. OIL BURNER BLAST TUBE
A. GENERAL ...………………….. 5 LOCATION ………………….11
B. FLUE………...…………………5 D. BLEEDER TUBE …………….. 12
C. COMBUSTION AIR
SUPPLY ……………………… 6
D. BLOWER ADJUSTMENT…… 6
E. BURNER INSTALLATION…. 7

PACKING

1 – Package - 1 – Package-

Prewired and tested furnace assembly: Gas or oil burner:
1- Heat exchanger/combustion chamber and 1- Oil or gas burner and controls
casing 1- Oil nozzle
1- Blower and pulley 1- Instruction manual and literature
1- Motor and pulley 1- Gas burner mounting flange
1- Belt (2 on dual drives)

1- Instruction envelope and (2) wiring diagrams
1- Fan limit installed 1 – Package-
1- Oil burner mounting flange Draft control or draft hood

NOTE: Actual packing may vary according to sizes, weights, models, custom jobs, etc. Optional
equipment may or may not be packed separately.

FOR YOUR SAFETY FOR YOUR SAFETY

If you smell gas: Do not store or use gasoline

1. Open windows or other flammable vapors

2. Don’t touch electrical switches and liquids in the vicinity of

3. Extinguish any open flame this or any other appliance.

4. Immediately call your gas supplier.

DO NOT DESTROY THIS MANUAL

Please read carefully and keep in a safe place for future reference.

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ASSEMBLIES

A. Casing Jacket F. Stack
B. Fan and Motor
C. Felt Pad Exc
D. Radiator I. Heat Exchanger Baffle N. Refractory Lining
E. Radiator Baffle O. Burner Port

G. C
H. Heat hanger M. Combustion Chamber

onnector L. Fiberglass Rope Seal

J. Air Tubes

K. Inspection Port

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SPECIFICATIONS

SO Series (Hor

izontal Units)

Model SO-300 400

utput BTU/HR 2 300,000 ,000 O

put-Gas BTU/HR 281,250 375,000 500,000

In

Input-Oil GPH 2.00 2.50 3.50

CFM @ .33WC ESP 2400 3000 4400
Blower Motor HP 3/4 1 1-1/2

Stack Diameter (in.) 9 10 12

SO-225 SO-

25,000 400

HO Series (High-Boy Units)

Model
Output BTU/HR 225,000 300,000 400,000

Input –Gas BTU/HR 281,250 375,000 500,000

Input-Oil GPH 2.00 2.50 3.50

CFM @ .33 WC ESP 2400 3400 4400
Blower Motor HP 3/4 1 1-1/2

Stack Diameter (in.) 9 10 12

HO-225 HO-300 HO-400

LO-Series (Low-Boy Units)

Model LO-225 LO-300 LO-400
Output BTU/HR 225,000 300,000 400,000

Input-Gas BTU/HR 245,000 375,000 500,000

Input-Oil GPH 2.00 2.50 3.50

CFM @ .33 WC ESP 2400 3400 4800
Blower Motor HP 3/4 1 1-1/2

Stack Diameter (in.) 9 10 12

NOTES: 1. Gas burner through 40 ,000 BTU are AGA listed.

2. Oil Burner is UL listed

0

.

3. Rights retained to cha e specifications and ratings
without notice or liability.

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