Tekmar 301P Installation & Operation Manual
© 2018 tekmar 301P_D - 02/18
301P_D
02/18
Zoning
Replaces: New
Switching Relay 301P
Installation & Operation Manual
Features
• Compatible with all low voltage thermostats
• Pump exercising
• Pump post purge
• LED for power and zone
• Top, bottom and back conduit knockouts
• Fuse protects pump
• Spare fuse included
• 20 VA transformer
• Thermal circuit breaker protects transformer
• Hinged cover
• CSA approved
• 3-year warranty
The Switching Relay 301P operates a circulator to provide heating to a hydronic
heating system when the connected thermostat calls for heat. The 301P includes
optional exercising to prevent circulator seizure when not in use, and optional post
purge operation to maximize energy savings.
Introduction
Power
Zone 1
Switching Relay 301P
2 of 8
© 2018 tekmar 301P_D - 02/18
Table of Contents
It is your responsibility to ensure that this thermostat is safely installed according to all
applicable codes and standards. tekmar is not responsible for damages resulting from
improper installation and/or maintenance.
Important Safety Information
This is a safety-alert symbol. The safety alert symbol is shown alone
or used with a signal word (DANGER, WARNING, or CAUTION), a
pictorial and/or a safety message to identify hazards.
When you see this symbol alone or with a signal word on your
equipment or in this Manual, be alert to the potential for death or
serious personal injury.
This pictorial alerts you to electricity, electrocution, and shock hazards.
This symbol identifies hazards which, if not avoided, could result in
death or serious injury.
This symbol identifies hazards which, if not avoided, could result in
minor or moderate injury.
This symbol identifies practices, actions, or failure to act which could
result in property damage or damage to the equipment.
Introduction ........................................................................................................1
Features .............................................................................................................1
Important Safety Information .............................................................................2
Radio Frequency Interference ...........................................................................3
Installation ..............................................................................................................4
Preparation ........................................................................................................4
Location .............................................................................................................4
Installing the Enclosure ......................................................................................4
Mechanical .........................................................................................................5
Electrical ............................................................................................................5
Sequence of Operation ...........................................................................................6
DIP Switches ......................................................................................................6
Zone Pump Operation .......................................................................................6
Boiler Operation .................................................................................................6
Indicator LED Operation ....................................................................................6
Technical Data ...................................................................................................7
Limited Warranty and Product Return Procedure .............................................8
© 2018 tekmar 301P_D - 02/18
3 of 8
Radio Frequency Interference
Read Manual and all product labels BEFORE using the
equipment. Do not use unless you know the safe and proper
operation of this equipment. Keep this Manual available
for easy access by all users. Replacement Manuals are
available at tekmarControls.com
•
It is the installer's responsibility to ensure that this control is safely installed according to all applicable codes and standards.
•
Improper installation and operation of this control could result in damage to the
equipment and possibly even personal injury or death.
•
This control is not intended for use as a primary limit control. Other controls that
are intended and certified as safety limits must be placed into the control circuit.
The control includes a fuse and transformer that are serviceable. Do not attempt to
service any other parts of the control. Attempting to service the control voids the warranty.
• Strip all wiring to a length of 3/8 in. or 10 mm for all terminals.
• A circuit breaker or power disconnect that provides power to the control should
be located nearby and clearly labeled.
•
Refer to the current and voltage ratings at the back of this manual before
connecting devices to this control.
The installer must ensure that this control and its wiring are isolated and/or shielded
from strong sources of electromagnetic noise. Conversely, this Class B digital apparatus
complies with Part 15 of the FCC Rules and meets all requirements of the Canadian
Interference-Causing Equipment Regulations. However, if this control does cause
harmful interference to radio or television reception, which is determined by turning
the control off and on, the user is encouraged to try to correct the interference by reorientating or relocating the receiving antenna, relocating the receiver with respect to
this control, and/or connecting the control to a different circuit from that to which the
receiver is connected.
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement
sur le matériel brouilleur du Canada.
Loading...