59Setting the DIP Switches
CAUTION
Do not remove the front cover unless the power to the
boiler is turned off or disconnected. Failure to do so may
result in electric shock.
The boiler has 2 sets of DIP switches on the main circuit board
(PCB). DIP switches are used to control the functionality of the
boiler. Set the DIP switches appropriately, based on the installation
environment.
6.1 DIP Switch 1 (6 switch unit)
The DIP SW 1 on the circuit board configures the operation status
and model/capacity settings.
1 2 3 4 5 6
O
N
O
N
1 2 3 4 5 6 7 8
Switch Function Setting
1 & 2
Operation
Status
Normal Operation 1-OFF, 2-OFF
2-stage MAX 1-ON, 2-OFF
1-stage MIN 1-OFF, 2-ON
1-stage MAX 1-ON, 2-ON
6.2 Dip Switch 2 (8 switch unit)
The DIP SW 2 on the circuit board configures the gas type,
temperature control modes, country, and enables or disables the
space heating thermostat.
1 2 3 4 5 6
O
N
O
N
1 2 3 4 5 6 7 8
Switch Function Setting
1 Gas Type
Natural Gas 1-OFF
Propane Gas 1-ON
2 Reserved - -
3 Reserved - -
4 Reserved - -
5 & 6 Country US/Canada 5-OFF, 6-OFF
7
Space Heating
Thermostat
Used 7-OFF
Unused 7-ON
8
Exhaust
Temperature
Control
Used 8-OFF
Unused 8-ON
Note
When PCB DIP switch 2 #8 is set to On, ensure that
CPVC or polypropylene piping is used for exhaust
venting.
6. Setting the DIP Switches
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