Buderus HS2109 Logamatic HS2109 Boiler Control Installation and Operating Manual
The Logamatic HS2109 is a control panel designed for Buderus boiler systems. It integrates a high-limit boiler control, a manual reset high limit, a space heating circulator or multi-zone relay panel, and an indirect fired tank charging circulator. It provides 120V outputs or dry contacts for various functions, features an adjustable boiler aquastat, and includes a built-in manual reset high limit for additional safety, with a trip point of 230°F. The HS2109 also features a dial for setting desired DHW temperature, an option for DHW priority using an internal dip switch, automatic 4-minute post-purge into the DHW tank, and built-in freeze protection.
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Installation and Operating Manual
Logamatic HS2109
Save These Instructions !
999 092 06/99 USA
Logamatic HS2109
Save These Instructions !
999 092 06/99 USA
1
TABLE OF CONTENTS
Introduction 3
Mounting Instructions 4-5
HS2109 Operating Instructions 6
Testing the Manual High Limit Reset 7
Installation Instructions (For contractors only) 8
Description of Wiring Terminals 9
Wiring Diagrams
Oil Boiler Wiring 10
Gas Boiler Wiring 11
Application Diagrams: Piping and Wiring Schematics
(1) Two Pump System : Space Heating and DHW 12-13
(2) One Pump System : Zoning with Zone Valves 14-15
(3) Two Pump System : Zoning with Zone Valves 16-17
(4) Multi-zone Heating and DHW: Zoning with Pumps 18-19
Trouble Shooting Procedures 20
1
2
3
4
5
6
You should have the following
components packaged in the box:
1 HS2109 control.
1 Chrome logamatic well.
1 Metal clip to secure DHW tank probe.
6 Plastic strain relief clips for field wiring.
7
8
TABLE OF CONTENTS
Introduction 3
Mounting Instructions 4-5
HS2109 Operating Instructions 6
Testing the Manual High Limit Reset 7
Installation Instructions (For contractors only) 8
Description of Wiring Terminals 9
Wiring Diagrams
Oil Boiler Wiring 10
Gas Boiler Wiring 11
Application Diagrams: Piping and Wiring Schematics
(1) Two Pump System : Space Heating and DHW 12-13
(2) One Pump System : Zoning with Zone Valves 14-15
(3) Two Pump System : Zoning with Zone Valves 16-17
(4) Multi-zone Heating and DHW: Zoning with Pumps 18-19
Trouble Shooting Procedures 20
1
2
3
4
5
6
You should have the following
components packaged in the box:
1 HS2109 control.
1 Chrome logamatic well.
1 Metal clip to secure DHW tank probe.
6 Plastic strain relief clips for field wiring.
7
8
2
Introduction 1
3
The Buderus HS2109 control panel integrates the functions of a high limit boiler control with a built-in manual reset
high limit for control of a burner, of a space heating circulator or multi-zone relay panel and of an indirect fired tank
charging circulator. A L8148A aquastat is not needed on oil fired equipment when using the HS2109.
The HS2109 provides either a 120 V output or dry contacts to fire the boiler, a 120 V output to power a space heating
circulator or a multi-zone relay panel for space heating and a 120 V output for the tank charging circulator. T-T contacts
are provided to fire the burner on a call for space heating. The control is also equipped with a sensor for measuring
domestic hot water (DHW) temperature. The control will automatically fire the burner on a call for DHW based on
sensor input. (The control does not require an additional input signal to fire the burner for DHW production).
The HS2109 provides the following features:
• General ON/OFF switch to control entire heating system.
• Adjustable boiler aquastat.
• Built-in manual reset high limit for additional safety (trips at 230°F).
• Manual summer/winter change-over switch.
• Dial to set the desired DHW temperature.
• Option for DHW priority using an internal dip switch.
• Automatic 4 minute post purge into the DHW tank.
• Built-in freeze protection for the DHW tank, even with the tank temperature turned off.
(Heats the DHW tank back to 60°F if the temperature fell below 40°F).
• Option for continuous operation of the heating circulator or shut down with 10 minute post-purge
after a call for heat is satisfied. Option is selected using an internal dip switch.
• Built-in boiler temperature read-out and optional burner hours runmeter.
• Built-in pump logic to prevent condensate formation in the boiler.
3
The Buderus HS2109 control panel integrates the functions of a high limit boiler control with a built-in manual reset
high limit for control of a burner, of a space heating circulator or multi-zone relay panel and of an indirect fired tank
charging circulator. A L8148A aquastat is not needed on oil fired equipment when using the HS2109.
The HS2109 provides either a 120 V output or dry contacts to fire the boiler, a 120 V output to power a space heating
circulator or a multi-zone relay panel for space heating and a 120 V output for the tank charging circulator. T-T contacts
are provided to fire the burner on a call for space heating. The control is also equipped with a sensor for measuring
domestic hot water (DHW) temperature. The control will automatically fire the burner on a call for DHW based on
sensor input. (The control does not require an additional input signal to fire the burner for DHW production).
The HS2109 provides the following features:
• General ON/OFF switch to control entire heating system.
• Adjustable boiler aquastat.
• Built-in manual reset high limit for additional safety (trips at 230°F).
• Manual summer/winter change-over switch.
• Dial to set the desired DHW temperature.
• Option for DHW priority using an internal dip switch.
• Automatic 4 minute post purge into the DHW tank.
• Built-in freeze protection for the DHW tank, even with the tank temperature turned off.
(Heats the DHW tank back to 60°F if the temperature fell below 40°F).
• Option for continuous operation of the heating circulator or shut down with 10 minute post-purge
after a call for heat is satisfied. Option is selected using an internal dip switch.
• Built-in boiler temperature read-out and optional burner hours runmeter.
• Built-in pump logic to prevent condensate formation in the boiler.
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
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Key Features
- Integrated high-limit boiler control
- Built-in manual reset high limit
- Adjustable boiler aquastat
- DHW priority option
- 4-minute post-purge
- Freeze protection
- Boiler temperature read-out
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Frequently Answers and Questions
How do I reset the manual high limit?
To reset the manual high limit, remove the safety nut and press the reset button underneath. You can find this on page 6 of the manual.
What is the purpose of the summer/winter change-over switch?
The summer/winter switch allows you to select between DHW heating only (summer) or space heating and DHW heating (winter). See page 7 of the manual for more details.
How do I test the manual reset high limit?
The manual can guide you through the testing procedure on page 6.
Can I use the HS2109 with a low-water cutoff?
Yes, you can use the HS2109 with a low-water cutoff. However, you must remove the factory-installed jumper between terminals 17 and 18 and connect the normally closed contacts on the low-water cutoff to these terminals. See page 9 of the manual for more information.
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