Fig. 9 — 28MK (Humidifier) Nomenclature
Fig. 10 — 39MG Gas-Fired Furnace Nomenclature
39MG C 11 M B B S1 N B G XX –
39MG – Gas Heat
39M Unit Size
C – 06W
D
Carrier Gas Heat Code
11-35 – Duct Furnaces
36-62, 70 – Rack Furnaces
Control Signal
B – 0-10 VDC
XX – Always
Unit Exterior
G – Galvanized
P – Pre-Paint
C
HX Tube Construction
(Type Steel)
B – 409 SS HX-Galv. Frame
– 304 SS HX-Galv. Frame
Revision Level
Electric Power
B – 120/1/60
Sequence
Fuel Type
S1
C1
H2
H3
H4
H5
H6
H7
F
G
H
J
K
L
– 08W
– 10W
– 12W
– 14W
– 17W
– 21W
– 25W
M – 30W
N
P
Q
R
S
T
V
– 36W
– 40W
– 50W
– 61W
– 72W
– 85W
– 96W
W – 110W
M
S
– Master
– Slave
N – Natural Gas
L – Propane
– 0-2000/USA
– 0-4500/Canada
– 2001-3000/USA
– 3001-4000/USA
– 4001-5000/USA
4501-5000/Canada
– 5001-6000/USA and Canada
– 6001-7000/USA and Canada
– 7000 and up/USA and Canada
Altitude and Country