tekmar 664 Snow Detector & Melting Control User Manuals - Manual

- User Brochure
Snow Detector & Melting Control 664
U 664
07/01
1 of 4 © 2001 U 664 - 07/01
User Interface
The tekmar Snow Detector & Melting Control 664 has a Liquid 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.
The Snow Detector & Melting Control 664 is designed to control up to two zones in a snow melting system.
The control automatically adjusts the mixed supply water to the snow melting system by controlling up to
two boilers and a single mixing device. For mixing, the 664 can use a variable speed injection pump, a
floating action mixing valve or a 4-20 mA device. The snow melting system may be started manually or
automatically through the use of a Snow / Ice Sensor 090. Standard features include priority snow melting,
slab and boiler protection, and many other useful items.
Snow Detector & Melting Control 664 Two Zone, Two Stage Boiler, Mixing 158033
Menu Item
Start Stop
Melt Demand
Idle Demand
WWSD
Minimum
Maximum
Water
Melting
%
User Access Level(s) The Snow Detector & Melting Control 664 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
adjust the INST (Installer) and ADV (advanced) access levels.
Open / Close
Displays when the actuator is
opening or closing the mixing
valve.
Mixing Device Output Scale
Shows output of injection pump,
mixing valve or 4-20mA device.
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
pump is operating.
Ovr
Override
Displays when the control is in
override mode.
Burner
Displays when the Stage 1
and/or Stage 2 relay is
turned on.
Zone
Displays when a zone is in
operation.
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