Raypak 850 用户手册
35
are listed in Table I on page 16. Automatic modulation
does not take place when the controller is in Test
Mode, only temperature limitation based on the XFyre
Central Heating set point occurs. The user will be
allowed to increase or decrease the fan speed by
pressing either the UP or DOWN arrow keys.
To activate the service mode, press the UP arrow and
ENTER/MENU keys together for 1 second. Once acti-
vated, you will see in the display Service and the
actual fan speed. The measurement of the combustion
levels should always be taken at the highest and low-
est fan speed. After 10 minutes, the service mode
stops automatically. To exit the service mode, press
the UP and DOWN arrow keys together for 1 second.
– Press the UP arrow key to increase the tempera-
ture (maximum setpoint is 200°F, but should not
exceed 180°F for “H” units or 160°F for “W” units).
Status Menu
Installers are also able to check the current status of
the XFyre unit parameters by pressing either the LEFT
or RIGHT arrow keys during normal operation.
The status menu can have three states depending on
the enabling of 0–10 VDC input and cascade master
control. Each state can be selected using the LEFT or
RIGHT arrow key when it is enabled.
Service Mode
This function is intended to simplify the gas valve
adjustment if needed. Manifold gas pressure settings
User Menu Items
Screen No.
Default Information Displayed
Range
Description
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