Instruction manual

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P/N HN-IOM-1 82-0331 Copyright 2009 Mestek, Inc.
Finned copper tube gas boilers & water heaters – Control manual
Parameter Requirement — MASTER boiler Requirement — MEMBER boiler
BOILERS
LEAD STAGE # .............
HEAT BAND ...............
Set
Set Heat band setting is not applicable to MEMBER boiler
unless boiler will operate in override mode
SETPOINTS
LOCAL SETPT..............
SYSTEM SETPT.............
OPERATE LIMIT ............
OP LIMIT BAND ............
SETPT SOURCE.............
Set if control will regulate boiler supply temp
Set if control will regulate header or DHW tank temp
(requires header sensor)
Set
Set
Specify AUTO or 4-20mA remote control (AUTO
uses the HeatNet control setup values for setpoint
temperature; 4-20mA uses a 4-20mA signal to
determine setpoint temperature as described in
Table 9, page 35)
Set
Set if needed for override operation
Not needed
Set
Set
Set only if boiler will operate in override mode with
4-20mA input
OUTDOOR RESET, IF USED
OA RESET .................
WARM WEATHER SD ........
WWS SETPOINT............
OA SETPTS ................
Enable if used
Enable if used
Set if used
Set if used (requires outdoor sensor)
Not applicable to member boiler unless boiler is to
operate in override mode
SYSTEM PUMP
POST PRG TIME ............
ALWAYS ENABLE ...........
SUMMER PUMP JOG . . . . . . . .
OVR ENAB IN WWS .........
Applies ONLY if the control will cycle a system pump
as well as the boiler pump
Set or keep default
Enable if desired
Enable if desired
Enable if desired
Not applicable to member boiler
LOCAL PUMP
DELTA TEMP ENABLE .......
DELTA TEMP...............
POST PRG TIME ............
ALWAYS ENABLED..........
Settings for boiler pump
Enable if desired (requires installing a return water
temp sensor)
Set value if enabled
Set or keep default
Enable if desired
Enable if desired (requires installing a return water
temp sensor)
Set value if enabled
Set or keep default
Enable if desired
PUMP/VALVE OPTION Enable constant pump if desired Enable constant pump if desired
FLOW PROVE Enable if used
(connect flow switch)
Enable if used
(connect flow switch)
NIGHT SETBACK Set if desired Not applicable to member boiler
OPTIONS (all) Set Set
AUX FUNCTIONS
COMBUST AIR DAMPER .....
ALARM SILENCE ...........
FAILSAFE MODES ..........
Select IN USE = YES to enable; select proof time or
keep default (connect wires to damper and end
switch); select COMMON or INDEPENDENT
Enable remote alarm silence if desired (connect
terminals to remote switch)
Enable LOW TEMP if desired for freeze protection; set
temp as desired
Same as MASTER
Enable remote alarm silence if desired (connect
terminals to remote switch)
Enable LOW TEMP if desired for freeze protection; set
temp as desired; enable run in local if desired
HEAT EXCHANGER
ALARM TYPE ..............
EXCHR DELTA T ............
LIM->HALF RATE ..........
Select WARNING (continue running) or FAULT
(shutdown)
Set maximum allowable temperature rise through
boiler
Enable if boiler is to be limited to 50% input when
DELTA T is exceeded
Set if boiler is enabled to run on local on loss of signal
from MASTER
Control parameters for HeatNet networksTable 3
Multiple boilers: HeatNet modulation (cont.)
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