Auxiliary Hot Water Heater
Installation
a. On Models with Pipe Plug in Thermostat
Housing (Port or Starboard):
(1)
(2)
Remove pipe plug.
IMPORTANT: When connecting a cabin heater or
hot water heater, certain requirements must be
met:
Coat threads of fitting(s) (obtained local-
ly) with Quicksilver Perfect Seal and in-
stall fitting(s) in threaded hole from which
pipe plug was removed.
•
Supply hose (from engine to heater) and
return hose (from heater to engine) MUST
NOT EXCEED 5/8 in. (15.8 mm) I.D. (inside
diameter).
(3)
Connect hot water heat supply hose to fit-
ting and secure with a hose clamp (not
provided).
•
Make heater connections ONLY at locations
described in the following instructions.
b. On Models with Audio Warning Heat
Switch in Thermostat Housing (Port
Side):
•
Check complete system for leaks after heater
is connected into cooling system.
(1)
(2)
(3)
Disconnect tan/blue wire from audio
warning switch.
•
Check for overheating condition (of engine)
after heater is connected.
Remove audio warning switch from ther-
mostat housing.
1.
Hot water heater supply hose can be connected
at several different locations. On some models,
there may be other accessories and options that
are using these hot water supply locations. One
of the following should be available for use when
installing a hot water heater system.
Coat threads of fitting(s) (obtained local-
ly) with Quicksilver Perfect Seal and in-
stall fitting(s) in threaded hole from which
pipe plug was removed.
(4)
(5)
Connect hot water heater supply hose to
fitting and secure with a hose clamp (not
provided).
a. Port side of thermostat housing.
NOTE: On some models it may be necessary to re-
move the audio warning heat switch from port side of
thermostat housing and reposition to water circulat-
ing pump opening as outlined following.
Remove pipe plug from starboard side of
engine water circulating pump.
b. Starboard side of thermostat housing, unless
being used for engine temperature switch
a
IMPORTANT: Do not reposition engine tempera-
tureswitch,itmustremainwhereinstalledbyfac-
tory.
b
72702
a - Engine Water Circulating Pump
b - Pipe Plug
72613
Thermostat Housing - Port Side Shown
(Starboard Similar)
(6)
(7)
Apply Loctite Pipe Sealant with Teflon to
threads of reducer bushing (obtain local-
ly) and audio warning heat switch.
2.
Connect hot water heater SUPPLY hose to de-
sired location following instructions “a” or “b”:
Install reducer bushing in circulating
pump and tighten securely.
Index
90-823324--2 796
SEAWATER COOLED SYSTEMS - 6A-47
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1993, 1994, 1995, 1996, 1997 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(4 votes, average: 4.5 out of 5)
Marine readers have rated 1993 1997 Mercury-MerCruiser GM V8 454 CID 7.4L and 502 CID 8.2L Marine Engines Service Manual Number 16 4.5 out of 5.0 based on 4 product reviews. Hugely helpful service manual! Perfect. Thank you!
Manuals are all Important for Technician
This book is invaluable if you do your own repairs. Great book.
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