tekmar 274 Boiler Control - Manual (Page 30)

© 2012 274_D - 11/12 30 of 44
Item Field Range Access Description Actual Setting
ADJUST
3
CP1, Au (Auto),
OFF
Default = Au
INST
ADV
BOILER 2 SECTION C
Selects Whether Boiler 2 is operational or not.
CP1 copies the settings of boiler 1 to boiler 2.
ADJUST
3
CP1, Au (Auto),
OFF
Default = Au
INST
ADV
BOILER 3 SECTION C
Selects whether Boiler 3 is operational or not.
CP1 copies the settings of boiler 1 to boiler 3.
ADJUST
CP1, Au (Auto),
OFF
Default = Au
INST
ADV
BOILER 4 SECTION C
Selects whether Boiler 4 is operational or not.CP1
copies the settings of boiler 1 to boiler 4.
ADJUST
OFF, -60 to
45°F
(OFF, -51 to
7.0°C)
Default = 10°F
(-12°C)
INST
ADV
OUTDOOR DESIGN SECTION B
The design outdoor air temperature used in the
heat loss calculations for the heating system.
Typically set to the outdoor temperature of the
coldest day of the year.
ADJUST
HRF1
HRF2
COIL
CONV
RAD
BASE
Default = CONV
INST
ADV
TERMINAL SECTION B
The type of heating terminal units that are being used.
Note: This item is only available when the
DIP is set to Demands AND OUT DSGN is set
between -60 to 45°F.
ADJUST
35 to 100°F
(2.0 to 38.0°C)
Default = 70°F
(21.0°C)
ADV
BOILER INDOOR SECTION B
The design indoor air temperature used in the
heat loss calculation for the boiler zones. Typically
set to 70°F (21.0°C). Note: This item is only
available when the DIP is set to Demands AND
OUT DSGN is set between -60 to 45°F.
ADJUST
70 to 220°F
(21.0 to
104.5°C)
Default = 180°F
(82.0°C)
ADV
BOILER DESIGN SECTION B
The supply water temperature required for boiler
zones on the typical coldest day of the year.
Note: This item is only available when the DIP is
set to Demands AND OUT DSGN is set between
-60 to 45°F.
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 recommend
supply water temperatures.
ADJUST
90 to 225°F,
OFF
(32.0 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 Menu (2 of 6)
Continued on next page.
ADJUS
T MENU