User Guide

All installations and services must be performed by qualified service personnel.
II. FURNACE SPECIFICATIONS
CHX3 SERIES
MODEL NO. CHX3-75 CHX3-100 CHX3-125
BTU/HR INPUT (High fire/ Low fire)
75,000 / 52,000 100,000 /
70,000
125,000 /
87,500
BTU/HR OUTPUT (High fire/ Low fire)
71,000 / 49,000 95,000 / 66,000 115,000 /
82,000
HEIGHT OF CASING
44-1/4” 44-1/4” 44-1/4”
WIDTH OF CASING
17” 21” 24”
DEPTH OF CASING
27-1/2” 27-1/2” 27-1/2”
WARM AIR OUTLET
15 x 18 19 x 18 22 x 18
RETURN AIR INLET
25 x 16 25 x 16 25 x 16
DIA. OF FLUE
2” 3” 3”
DIA. OF COMBUSTION
AIR INTAKE
2” 3” 3”
CFM from .2” & .5” w.c.
EXTERNAL STATIC PRESSURE
COOLING COOLING COOLING
@COOLING TAP A
1000 1200 1400
@COOLING TAP B
800 1000 1200
@COOLING TAP C
1200 1400 1600
@COOLING TAP D
1400 1600 2000
HEATING HEATING HEATING
@HEATING TAP A (High fire/Low fire)
931 / 760 1243 / 1015 1556 / 1270
TEMPERATURE RISE
70 / 60 70 / 60 70 / 60
BLOWER MOTOR HP
.5 .75 1
POWER CHOKES
- 2.65 Mh 2.1 Mh
LARGEST RECOMMEDED
AIR CONDITIONER
3.5 Ton 4 Ton 5 Ton
SIZE OF FILTERS
24-3/4” x 15-3/4” 24-3/4” x 15-3/4” 24-3/4” x 19-3/4”
NOTES:
1. BTU output based on annual fuel utilization efficiency rated by manufacturer.
2. On all outlet and inlet dimensions, the first dimension is width.
3. To permit largest recommended air conditioning (at .5 static pressure), selection of the highest motor speed is
required.
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