Mr. Heater, Inc.| Kerosene Forced Air Heater
Operating Instructions and Owner’s Manual
7
The parts lists and wiring diagram show the heater as it was
constructed. Do not use a heater which is different from that
shown. Heater performance is effected by air pressure set-
ting. If there is any uncertainty about the air pressure setting,
WIRING DIAGRAM
MH50KR/MH75KTR
MH125KTR/MH175KTR/MH210KTR
have it checked.
A heater which is not working right must be repaired, but only
by a trained, experienced service person.
ON/OFF SWITCH
AC OUTLET
18AWG GRN
18AWG ORG
18AWG ORG
2
3
1
IGNITION TRANSFORMER
MOTOR
HI-LIMIT
SWITCH
CORD SET
MOTOR CAPACITOR
CIRCUIT BOARD
18AWG YELL
18AWG YELL
18AWG RED
18AWG RED
18AWG WHT
18AWG BLK
18AWG GRN
18AWG PURPLE
18AWG PINK
18AWG PINK
1
2
3
4
5
6
18AWG PURPLE
THERMOSTAT
18AWG BLUE
7
8
ELECTR0DE
18AWG GRN
17AWG BLK
9
10
RED LED
11 12
18AWG BLUE
17
AW
G
B
LK
24AWG BLK
24AWG RED
18
AW
G
B
LK
18
AW
G
WH
T
CAD CELL
18AWG BLUE
THERMOSTAT
18AWG PURPLE
COM1
I2
I1
M2
M1
L
N
18AWG PURPLE
18AWG GRN
18AWG BLK
18AWG WHT
18AWG YELL
18AWG YELL
FLAME CONTROL SCHEMATIC
(connections may not be in same
position on circuit board)
CORD SET
CAD CELL
HI-LIMIT
SWITCH
1
3
2
18AWG GRN
AC OUTLET
ON/OFF SWITCH
125KT,175KT,
210KT ONLY
75KT,125KT,175KT,210KT ONLY
18AWG PINK
18AWG PINK
MOTOR CAPACITOR
MOTOR
18AWG ORG
18AWG ORG
18AWG RED
18AWG RED
IGNITION TRANSFORMER
17AWG BLK
18AWG GRN
ELECTR0DE
17A
WG BLK
18A
WG BLK
18A
WG WHT
H2
H1
