MANUAL - PLEASE READ!
Operator Manual
OMAH474
A&I Products
www.aiproducts.com
1. This versatile heater may be mounted vertically. Typical locations include floor, wall or under
dash.
2. Route the heater hose to the engine compartment, using grommets through the fire wall, cut the
existing hose, add and clamp the Y splicer then run the new hose and clamp to the heater.
Avoid any sharp bends which may kink the hose and restrict proper flow. Run Y splicer with the
coolant flow. (See splicer diagram.)
3. Route power supply wire from fuse block to rocker switch, including the inline 7.5A amp fuse.
And finally, ground the heater case to the chassis of the vehicle. We recommend all electrical
connections are terminated or soldered and taped. (See the connection diagram below.)
Northern Factory Sales warranties its Heaters to be free from all defects in manufacturing and
workmanship for one year from the date of installation.
Any Heater claimed defective under this limited warranty should be forwarded to Northern Factory
Sales, transportation charges prepaid, for inspection and warranty determination.
Northern Factory Sales will not be responsible for heaters damaged from misuse or neglect. Any
expense associated with a warranty replacement, including but not limited to installation and
transportation charges, are not covered under this warranty. This warranty provides for product
replacement only. Any attempt at local repairs automatically voids this limited warranty.
INSTALLATION INSTRUCTIONS:
WIRE CONNECTION DIAGRAM:
SPLICER DIAGRAM:
FROM AUX
HEATER
OUTLET
TO AUX
HEATER
INLET
HOT SIDE
RETURN SIDE
EXISTING
HEATER
HOSE
NOTE: The low speed terminal is located behind the
high position due to internal switching.
POWER
SOURCE
7.5A FUSE
SWITCH
GROUND TO
CHASSIS
RED (LOW)
M
ORANGE
(HIGH)
