Installation

Connecting The Control

Make sure all power to the devices and terminal blocks is off, and remove any

remaining jumpers from the terminals.

Reconnect the terminal blocks to the control by carefully aligning them with their

respective headers on the control, and then pushing the terminal blocks into the

headers. The terminal blocks should snap firmly into place.

Install the supplied safety dividers between the unpowered sensor inputs and the

powered or 120 V (ac) wiring chambers.

Apply power to the control. The operation of the control on power up is described in

the Sequence of Operation section of the brochure.

The control’s exterior can be cleaned using a damp cloth. Moisten cloth with water and wring out prior to wiping control. Do not use

solvents or cleaning solutions.

The DIP switch settings on the control are very important and should be set to the appro-

priate settings prior to making any adjustments to the control through the User Inter-

face. The DIP switch settings change the items that are available to be viewed and / or

adjusted in the User Interface.

If a DIP switch is changed while the control is powered up, the control responds to the

change in setting by returning the display to the View menu. This is true for all the DIP

switches except for the Lock / Unlock DIP switch.

LOCK / UNLOCK (FACTORY SETTING IS UNLOCK)

The Lock / Unlock DIP switch is used to lock and unlock the access level of the control and tekmar Net tN2 device. Once locked,

access levels cannot be changed. To determine if the control is currently locked or unlocked, a small segment representing a

padlock is viewed in the bottom right hand corner of the display. When the padlock is closed, the access level cannot be changed.

To change the access level, set the DIP switch to the unlocked, or down position. The current access level of the control or tekmar

Net tN2 device is viewed in its Miscellaneous (Misc) menu. While viewing the access level, use the ▲ and ▼ buttons to select

between the Limited (LTD), User (USER), Installer (INST) or Advanced (ADV) access levels.

To lock the access level, select the appropriate access level in the Miscellaneous (Misc) menu and move the DIP switch from the

unlocked position to the locked position. As long as the DIP switch is in the locked position, the access level of the control or tekmar

Net tN2 device can no longer be viewed or adjusted in its Miscellaneous (Misc) menu.

SNOW MELTING / MIXING RESET (FACTORY SETTING IS MIXING RESET)

The Snow Melting / Mixing Reset DIP switch determines the operating mode of the mixing system. When the DIP switch is set to

the Mixing Reset setting, the mixing system is used to supply heat to a building heating system. The control uses a Characterized

Heating Curve method of outdoor reset that matches the heating characteristics of the type of terminal unit that is being used. See

Sequence of Operation, Section A for a description of terminal units. When this setting is used, a desired indoor air setting, design

outdoor setting and a design supply setting must be entered into the control.

When the DIP switch is set to the Snow Melting setting, the mixing system is used to supply heat to a single zone snow melting system.

Prim

Boil Sys

Pmp P2

Power

Snow Melting

Mixing Reset

DIP Switch Settings

Cleaning