tekmar 274 Boiler Control - Manual (Page 31)

31 of 44 © 2012 274_D - 11/12
Item Field Range Access Description Actual Setting
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 LoHi or LoLo
Default = LoHi
ADV
BOILER STAGE MODE SECTION C
Selects the firing sequence of the stages when
using multi-stage boilers.
Note: Only available in Mode 3.
ADJUST
DMPR
‘Damper’, ALRT
‘Alert’
Default =
DMPR
ADV
RELAY SECTION D
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 D
Selects the operation of the Proof Demand
to be either off, flow proof, or combustion air
damper.
Note: C.A. only available if RELAY is set to
DMPR.
ADJUST
Primary
min
0:10 to 3:00
minutes
Default = 0:30
(pump)
ADV
PUMP PROOF DEMAND DELAY SECTION D
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 F P.
ADJUST
min
0:10 to 3:00
minutes
Default = 1:00
(damper)
ADV
CA PROOF DEMAND DELAY SECTION D
The time allowed for the control to receive a proof
demand once the C.A. contact turns on.
Note: Only available if RELAY is set to DMPR AND
Proof Demand is set to C A.
ADJUST
min
0:00 to 3:00
minutes
Default = 1:00
ADV
DAMPER DELAY SECTION D
The time delay for the boiler to operate once
the combustion air damper relay closes.
Note: Only available if RELAY is set to DMPR AND
Proof Demand is set to OFF or FP.
ADJUST
Au (Auto),
0:30 to 40:00
minutes
Default = Au
ADV
STAGE DELAY SECTION C
The minimum delay between the operation of stages.
Note: This item is only available when at least
two boilers are set to Au.
ADJUST
1
min
0:00 to 3:00
minutes
Default = 0:10
ADV
BOILER 1 FIRE DELAY SECTION C
Delay from turn-on of ignition until the burner
fires.
Note: This item is only available when
Boiler 1 is set to Au.
Adjust Menu (3 of 6)
Continued on next page.
ADJUS
T MENU