tekmar 667 Snow Detector & Melting Control User Manuals - Manual

- User Brochure
Snow Detector & Melting Control 667
U 667
09/02
1 of 4 © 2002 U 667 - 09/02
User Interface
The Snow Detector & Melting Control 667 is designed to control a single zone snow melting system.
The control automatically adjusts the mixed supply water to the snow melting system by controlling
a single boiler and a variable speed injection pump. The snow melting system may be started
manually or automatically through the use of a Snow/Ice Sensor 090. Standard features include
pump exercising, slab and boiler protection, and many other useful items.
The tekmar Snow Detector & Melting Control 667 has a Liq uid Crystal Display
(LCD) and four push buttons (Menu, Item,
▲, ▼) which are used to view and
adjust the settings.
Menu
All of the items displayed by the control are organized into various menus. These menus
are listed on the left hand side of the display (Menu Field). To select a menu, use the
Menu button. By pressing and releasing the Menu button, the display will advance to
the next available menu. Once a menu is selected, there will be a group of items that
can be viewed within that menu.
Item
The abbreviated name of the selected item will be displayed in the item field of the dis-
play. To view the next available item, press and release the Item button. Once you have
reached the last available item in a menu, pressing and releasing the Item button will
return the display to the first item in the selected menu.
Adjust
To make an adjustment to a setting in the control, begin by selecting the appropriate
menu using the Menu button. Then select the desired item using the Item button.
Finally, use the
▲ and / or ▼ button to make the adjustment.
Additional information can be gained by observing the Status field of the LCD. The
status field will indicate which of the control’s outputs are currently active. Most symbols
in the status field are only visible when the View menu is selected.
User Access Level(s) The tekmar Snow Detector and Melting Control 667 has four access levels which are LTD (limited), USER,
INST (installer), and ADV (advanced). This brochure only covers the LTD (limited) and USER levels. Only qualified service people
should make adjustments in the INST (installer) and ADV (advanced) access levels.
Melt Demand
Idle Demand
WWSD
Minimum
Maximum
Water
Melting
Buttons
Selects Menus, Items and
adjusts settings
Number Field
Displays the current value
of the selected item
Menu Field
Displays the
current menu
Item Field
Displays an abbreviated
name of the selected item
Status Field
Displays the current
status of the control's
inputs, outputs and
operation
2
Mixing Device Output Scale
Shows output of injection
pump. Arrows show whether
the output is increasing or
decreasing.
Warning
Displays when an error exists
or when a limit has been
reached.
Lock / Unlock
Displays whether the access
levels are locked or unlocked.
°F °C
min hr
sec
°F, °C, sec, min, hr
Units of measurement.
Pointer
Displays the control operation
as indicated by the text.
Pump
Displays when the system
pumps are operating.
Ovr
Override
Displays when the control is in
override mode.
Burner
Displays when the Boiler relay
is turned on.