tekmar 284 Boiler Control - Manual (Page 39)

© 2014 284_D - 08/14 39 of 60 A Watts Water Technologies Company
Setup Menu (3 of 6)
Item Field Range Description
OFF, 0:10 to 3:00 min
Default: 1:00 min
Access: ADV
CA DELAY
The time delay for the first boiler to operate once the C.A. damper (Aux) relay
turns on.
This item is only available if the External C.A. Proof / Off switch is set to Off &
Auxiliary Relay is set to DMPR.
150 to 350°F, OFF
(65.5 to 177.0°C)
Default: OFF
Access: ADV
VENT MAXIMUM
The maximum vent temperature that is used for vent temperature limiting. The
boiler plant will be shut down if the vent temperature rises to the vent maximum
temperature. Set to OFF if only vent temperature monitoring is desired.
AUTO, 0:30 to 40:00
min
Default: AUTO
Access: ADV
STAGE DELAY
The minimum time delay between the operation of boiler stages, either within a
boiler or between boilers.
This item is only available if there are at least two boilers set to auto
(Boiler Enable = AUTO).
SEQ or PAR
Default: PAR
Access: ADV
MODULATION MODE CONDENSING
Selects either sequential or parallel modulation for multiple modulating condensing
boilers.
This item is only available if there are at least two boilers set to auto (ENABLE=AUTO),
condensing (Boiler Condense = YES) & Modulating (Boiler Type = MOD or
EMS).
SEQ, PAR
Default: SEQ
Access: ADV
MODULATION MODE NON-CONDENSING
Selects either sequential or parallel modulation for multiple modulating non-
condensing boilers.
This item is only available if there are at least two boilers set to auto (Boiler Enable
= AUTO), non-condensing (Boiler Condense = NO) & Modulating (Boiler Type =
MOD or EMS).
LHLH or LLHH
Default: LHLH
Access: ADV
STAGING MODE CONDENSING
Selects either low-high-low-high (LHLH) or low-low-high-high (LLHH) staging for
multiple two-stage condensing boilers.
This item is only available if there are at least two boilers set to auto (Boiler
Enable = AUTO), condensing (Boiler Condense = YES) & two stage (Boiler Type
= 2STG).
LHLH or LLHH
Default: LHLH
Access: ADV
STAGING MODE NON-CONDENSING
Selects either low-high-low-high (LHLH) or low-low-high-high (LLHH) staging for
multiple two-stage non-condensing boilers.
This item is only available if there are at least two boilers set to auto (Boiler
Enable = AUTO), non-condensing (Boiler Condense=NO) & two stage (Boiler
Type = 2STG).
OFF or ON
Default: ON
Access: ADV
ROTATION CONDENSING BOILER GROUP
Selects the equal run time rotation feature within the condensing boiler group.
This item is only available if there are at least two boilers set to auto
(Boiler Enable = AUTO) & condensing (Boiler Condense = YES).
OFF or ON
Default: ON
Access: ADV
ROTATION NON-CONDENSING BOILER GROUP
Selects the equal run time rotation feature within the non-condensing boiler
group.
This item is only available if there are at least two boilers set to auto
(Boiler Enable = AUTO) & non-condensing (Boiler Condense = NO).
OFF or ON
Default: OFF
Access: ADV
FIXED LEAD
Selects whether or not the first boiler is to be excluded from the rotation sequence.
If set to ON, boiler 1 is always the first to fire.
This item is only available if boiler 1 is enabled (Boiler Enable = AUTO) & all
available boilers are either condensing or non-condensing.