Raypak B0200 Owner's Manual page 33

MODULATING MODELS (ROBERTSHAW 7000DSTRDHHC MODULATING VALVE)
The water temperature is selected by turning the temperature adjustment knob on the
Robertshaw 7000 Series modulating valve to a number which corresponds to the table
opposite. The gas control cover must be removed to gain access to the adjustment
knob and must be replaced after the temperature adjustment has been made.
HIGH-LIMIT THERMOSTAT ADUSTMENT
A Honeywell high limit thermostat is used on both On/Off and
Modulating water heaters (refer to
page 25. The thermostat has a capillary style temperature sensor
located in a well (pocket) fitted in the outlet header and senses
the temperature of the water leaving the water heater.
The high limit temperature setting is adjusted by removing the
front cover (loosen one Phillips-head screw) and turning the
adjuster.
The high limit is reset by pressing the red button on the front of
the thermostat. It may be necessary to allow the system water
temperature to cool sufficiently before the high limit can be reset.
In general, the high limit should be set approximately 15°C above
the operating temperature, however the following maximum limits
must be observed:
Water Heating Applications: 90°C maximum.
Mechanical/Process Heating Applications: 99°C maximum for vented systems and 90°C maximum for
unvented systems.
"Location of Controls" on
33
TEMPERATURE CONTROL
Dial No
Reset Button
Temp °C
Lo 43
1 49
2 55
3 62
4 68
5 74
6 80
7 86
8 93
HI 99
Adjuster