tekmar 269 One Stage Steam Control - Manual

Copyright © D 269 - 06/00 1 of 12
9
One Stage Steam Control 269
10
Sen
Com
Sen
Com
11 12
Sen
Cnd Out
Steam
Established
Min. On Time (%)
Lockout Diff'l ( °F)
Test
Do not apply power here
Sen
Occupied
40
(4) 100
(38)
70 °F
(21 °C)
Unoccupied
40
(4) 100
(38)
70 °F
(21 °C)
H1099
with Early Start
13 14 15
Boiler
Power
Steam
Established
Heating
Cycle
UnOcc.
Auxiliary
WWSD
Early Start
Warning
Use Nº 20 AWG or larger copper conductors rated for at least 75 °C and 300V.
R
R
LR 58223 E150539
Listed
5T62
Date
S/N
2093
1234567
Power: 120V 50/60Hz 3VA
Relays: 120Vac 10A 1/4 hp 240VA, 2A pilot duty
Enclosed Energy Management Equipment
Manufactured
in Canada by
180 °F
130 230
Design Out
-40
0 °F
40
Off
25
50
5
Auto
45%
100
0
Man. Override
N L
1 2 3 4 5
Power
6
S2
10K
Sw
UnO
S1
10K
Aux. Warn.
1
50 min
100
10
Cycle Length
Early Start
1 2 3 4
Off
7 8
Boiler
Indoor Sensor S1
Indoor Sensor S2
Condensate Return Sensor
- Data Brochure
One Stage Steam Control 269
D 269
06/00
The tekmar One Stage Steam Control 269 is a microprocessor-based control which regulates the
firing time of a steam boiler based on user settings, outdoor air temperature, condensate return
temperature, and optionally, the indoor air temperature(s). The steam boiler can be operated in
the outdoor reset mode, or in Manual Override mode based on dial settings. The control has built-
in diagnostics for sensor checking with a Warning output for error reporting. Other control
operation features include Auxiliary relay output, Steam Established and Lockout Differential
temperatures, and Early Start with setback limit when using the Unoccupied input.
R R
LR 58233 E150539
One Stage Steam Control 259
Occupied
40
(4) 100
(38)
70 °F
(21 °C)
Unoccupied
40
(4) 100
(38)
70 °F
(21 °C)
with Early Start
Boiler
Power Steam
established
Heating
cycle
UnOcc.
Auxiliary
WWSD
Early Start
Warning
120 Vac
power supply
Output:
Warning Relay
Output:
Auxiliary Relay
Output:
Turn on boiler
Input: Indoor
Sensor 074 Optional
Input:
Unoccupied
signal
Optional
Test button and
LED to test main
control functions
System design
outdoor
temperature
setting
Heating cycle
length setting
Steam
established
(condensate
temperature)
setting
Minimum on
time/lockout
differential
setting
Terminal Plugs:
Power and out-
put connections
Boiler is on
Unoccupied
temperature
setting
Occupied
temperature
setting
Sensor Fault
warning
System is in
Unoccupied
mode
System is in
Warm Weather
Shut Down
Manual
override setting Operating Mode
selector switches
Auxiliary relay
output is on
R
R
Outdoor Reset Strategy . . pg. 2
Sequence of Operation . . . pg. 3
Installation . . . . . . . . . . . . . pg. 6
Settings . . . . . . . . . . . . . . . pg. 8 Testing . . . . . . . . . . pg. 9
Error Messages . . . pg. 11
Technical Data . . . . pg. 12
Limited Warranty . . pg. 12
Early Start
into or
out of UnOcc.
Condensate
temperature is
established
120Vac power
supply is on
Heating Cycle
is in progress
Input: Indoor
Sensor 074 Optional
Input: Outdoor
Sensor 070. Included
Input: Condensate
Return Sensor 071.
Included