tekmar 275 Boiler Control - Manual (Page 34)

© 2012 275_D - 11/12 34 of 48
Item Field Range Access Description Actual Setting
OFF or On
Default = OFF
ADV
CONDENSING LEAD SECTION H
Select whether or not the lead group of boilers
are condensing or not. When set to On, the boiler
minimum setting is not applied to the lead group
of boilers.
Note: Only available when Fixed Lead / Off DIP
switch is set to Fixed Lead, or when Fixed Last /
Off DIP switch is set to Fixed Last.
ADJUST
OFF, 80 to
180°F
(OFF, 26.5 to
82.0°C)
Default = 140°F
(60.0°C)
ADV
BOIL MINIMUM SECTION C
The minimum allowed boiler target temperature
and boiler return protection temperature.
Check the boiler manufacturer’s manual for
recommended supply water temperatures.
ADJUST
120 to 225°F,
OFF
(49.0 to
107.0°C, OFF)
Default = 200°F
(93.5°C)
ADV
BOILER MAXIMUM SECTION C
The maximum boiler target supply temperature
for heat, setpoint and DHW demands. Set
below the high limit setting on the boiler.
ADJUST
Au (Auto), 2 to
42°F
(Au, 1 to
23.5°C)
Default = Au
ADV
BOILER DIFFERENTIAL SECTION C
The temperature differential that the control is
to use to cycle the boiler on and off (half above
and half below target).
ADJUST
DMPR
‘Damper’, ALRT
‘Alert’
Default =
DMPR
ADV
RELAY SECTION M
Selects the operation of the relay to be either
combustion air or alert.
ADJUST
OFF, Flow
Proof (FP),
Combustion Air
(CA)
Default = OFF
ADV
PROOF DEMAND SECTION M
Selects the operation of the Proof Demand
to be either off, flow proof, or combustion air
damper.
Note: Only available when Relay is set to
Damper (DMPR).
ADJUST
Primary
min
0:10 to 3:00
minutes
Default = 0:30
ADV
PUMP PROOF DEMAND DELAY SECTION L
The time allowed for the control to receive a
proof demand once the primary pump turns on.
Note: Only available when Proof Demand is set
to Flow Proof (FP).
ADJUST
min
0:10 to 3:00
minutes
Default = 1:00
ADV
CA PROOF DEMAND DELAY SECTION M
The time allowed for the control to receive a proof
demand once the Combustion Air (CA) contact
turns on.
Note: Only available when Relay is set to Damper
and Proof Demand is set to Combustion Air (CA).
Adjust Menu (3 of 7)
Continued on next page.
ADJUS
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