QUICK COUPLERS
32˚F
BURNER AIR ADJUSTMENT
14
PREVENTIVE MAINTENANCE:
LEAKS: Promptly eliminate any leaks found in the pumping system by
removing suspect parts, applying thread sealant to the threads and reinstall-
ing.
NOTE: If using teflon tape, be certain no tape gets inside any plumbing
QUICK COUPLERS: There are o-ring seals inside the couplers which will
deteriorate. To replace, simply install a replacement o-ring to correct the
leak. (Additional o-rings can be purchased from your dealer.)
NOZZLE: Water flow through the spray nozzle will erode the orifice, making
it larger, resulting in a pressure loss. Nozzles should be replaced whenever
pressure is less than 85% of the maximum. The frequency of replacement
will depend upon such variables as mineral content in the water and number
of hours the nozzle is used.
WINTERIZING:
WARNING RISK OF UNIT BURSTING. DO NOT STORE / OPERATE
For storage and transportation purposes in subfreezing ambient tempera-
tures, it will be necessary to winterize this unit. This unit must be protected
to the lowest incurred temperature for the following reasons:
0˚C
1. If any part of the water handling system becomes frozen; excessive pressure
may build up in the unit which could cause the unit to burst resulting in
possible serious injury to the operator or bystanders.
2. The water handling system in this unit may be permanently damaged if
frozen. FREEZE DAMAGE IS NOT COVERED BY WARRANTY.
If you must store your unit in an area where the temperature may fall below
32°F, you can protect your unit by following the procedure outlined below.
AIR BLOW OUT:
1. Remove the nozzle from the wand assembly. Squeeze the trigger until
water ceases to exit the wand assembly.
2. Connect an air fitting from an air hose to the heater module inlet.
3. Run compressed air into the system to remove all water from the system.
FUEL FILTER/WATER SEPARATOR:
Inspect bowl on fuel filter/water separator for water accumulation. If water
exists, unscrew drain valve on bowl to drain water, then close.
BURNER AIR ADJUSTMENT:
The air shutter has been factory preset for proper operation between sea
level and 2000 feet elevation at standard conditions (60°F ambient water
and air temperatures). In colder temperatures or higher altitudes, it may be
necessary to adjust the air supply to the combustion chamber. This ad-
justment will maximize burner efficiency and avoid inefficient operation or
excessive sooting of the heat exchanger coil. A smoke spot test is recom-
mended during any air shutter and band adjustment. If you do not have the
equipment to perform a smoke spot test, follow the procedures listed below.
1. The machine must be running and the burner ON.
2. Loosen the Locking Screw (#3) on the shutter.
3. Check for smoke from the heat exchanger exhaust. If smoke is not present,
slowly close the Air Shutter (#1) by moving the dial counterclockwise to a
lower number. Continue moving the dial until smoke appears.
4. Record this setting.
MAINTENANCE
to prevent the possibility of a plugged spray nozzle.
UNIT IN A FREEZING ENVIRONMENT!
HOM-SERIES Hot Water Heater module Operator's Manual