Flow Rate And Water Temperature; Turning Unit Off; Operation Control By Timer (Option); Preventing Freeze Up - Toyotomi Oil Miser OM-180 (Type C) Operation And Maintenance Instructions

FLOW RATE AND WATER TEMPERATURE

SEASON
SUMMER
SPRING & FALL
WINTER
NOTE: Whenever high temperature water is required for continuous demand, lessen the flow rate.
Whenever low temperature water is required, the flow rate may be increased.
The flow rates are calculated under the conditions of standard installation and normal usage so
that they will vary according to installation, usage and temperature.
1. Press "POWER SWITCH" to ''OFF'' position. All lamps will go out.
2. Close the fuel tank valve.

OPERATION CONTROL BY TIMER (OPTION)

¡ This unit is equipped with a timer connection terminal.
¡ Leave the power switch "ON" for automatic operation by the timer.
[When the timer is ON]
When the timer connection terminal receives a no-voltage contact signal "ON", the unit operates and the
operation lamp lights up. Then, according to the temperature of the heat exchanger, automatic operation
is carried out. When the burner starts burning, the burner lamp lights up.
[When the timer is OFF]
When the no-voltage contact signal on the timer connection terminal is turned "OFF", the unit enters a
stand-by condition and the operation lamp blinks. When the timer connection terminal receives no-volt-
age contact signal "ON" again, the unit automatically operates as stated above.
NOTE: Even when the timer connection terminal receives no-voltage contact signal "ON", the water
heater won't operate when the power switch is "OFF".
In order to prevent any kind of damage or leaks caused by freezing, keep the pipes heated at all times, as
specified below.
CAUTION: In order to prevent the water heater from freezing or develop a leak, regardless of being used in
a cold region or in a warm or hot region, the water supply piping, hot water supply piping,
drain pipe, check valve, valves, expansion tank, and temperature & pressure relief valve are to
be protected with sufficient insulation materials (by wrapping with heat insulation or by equip-
ping an freeze prevention heater).
1. OPERATING AT HIGH TEMPERATURE
CAUTION: Risk of scald injury. Before changing temperature setting make sure that the water heater is
not being used by any of your family at any place in the house.
Set the Thermostat to the ''VERY HOT'' position, and press "POWER SWITCH" to ''ON'' position.
NOTE: Since this method cannot prevent the water inside of the piping from freezing, sufficient insulation
measures are to be given according to the requirements mentioned in the above cautions.
INCOMING WATER TEMP
80˚F
60˚F
40˚F

TURNING UNIT OFF

CAUTION
HOTTER WATER INCREASES THE
RISK OF SCALD INJURY.
BEFORE CHANGING TEMPERATURE
SETTING SEE INSTRUCTION
MANUAL.

PREVENTING FREEZE UP

HOT WATER TEMP
120˚F (40˚F RISE)
120˚F (60˚F RISE)
120˚F (80˚F RISE)
POWER OPERATION
B
HOT
A
VERY HOT
COLD
ON/OFF
THERMOSTAT
FLOW RATE
6.2 GPM
4.1 GPM
3.1 GPM
BURNER WARNING
OM-180
10