Installation Manual

7 - 1/16”
AIR
FLOW
7 - 7/16”
7 - 3/8”
LOW (L)
TERMINAL
BATTERY
TERMINAL
H
L
M
B
C
HI (H)
TERMINAL
MED (M)
TERMINAL
NOT
USED
TA9001377_rev2 Sheet 1 011011
AVAILABLE PARTS:
SWITCH CONNECTIONS:
PART NO. DESCRIPTION
TA8000720
TA9001515
D-001-686
D-001-686-24
Heater Core
Motor 12v
Motor 24v
M-62321-G1
Fan Blade
3-Speed
Switch
When ordering parts please specify Model, Voltage
Part Number, and Description. Optional Defrost Kits
MFA-126 and MFA-127 available upon request.
Yellow Wire
from Motor
(Low)
Red Wire
from Motor
(Medium)
Orange Wire
from Motor
(High)
PREPARATION & MOUNTING
Position the heater and determine if clearance and mounting
surfaces are adequate. Identify the engine cooling source and
such that they will not be damaged by sharp edges or abrasion.
using the mounting template provided, then mount the heater.
Mark locations to drill for the mounting studs and core tubes
return connections, then plan routing of the (2) heater hoses
COOLANT CONNECTIONS
The vehicle cooling system should be cool and drained prior
to heater connection. These heaters have one tube marked
the return. Connecting heater inlet to the return line will reduce
5/8” heater hoses so they will not be damaged by sharp edges
heat output as much as 25%. Plan routing of the wiring and
or abrasions. When vehicle has come to normal operating
system will need to be “topped off” as air trapped during the
installation will have escaped.
temperature for the first time with heater installed, the cooling
“inlet” which must be connected to the coolant source and not
ELECTRICAL CONNECTIONS
OUTSIDE DIMENSIONS & AIRFLOW
The heater electrical circuit must be fused for safety, with the
fuse placed as close to the vehicle’s electrical connection as
the recommended fuse for H-503024 is 5 amp. These heaters
the electrical circuit. 16 gage wire is the correct wire for all
have a separate ground (-) wire that must be utilized to complete
connections. The 3-speed fan of these heaters is controlled by a
switch as illustrated.
possible. The recommended fuse for H-503012 is 7.5 amp, and
INSTALLATION INSTRUCTIONS for MARADYNE H-503012 & H-503024 HEATERS
R
(PHONE) 216-265-8006 ext. 136 (FAX) 216-362-6342 www.maradynemobile.com
MARADYNE Mobile Products 4540 W. 160th STREET CLEVELAND, OH 44135
R