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Step 4: Set the SMC55-HWQS Basic Parameters for System
Compatibility
(03b): Run Auxiliary Heat (Aux / W
Applicable Systems: Conventional and Heat Pump only if auxiliary heat stage is supported by the system.
Use this parameter to select whether or not the auxiliary heating stage can be allowed to run along with the other heat stages.
This parameter will be skipped if you select an option anything other than '02: 2 stages' (1 Compressor and
1 Auxiliary/1 Primary source and 1 Auxiliary source [W
parameter (02b).
Note for Heat Pump: If auxiliary heat stage runs on gas/oil then it is recommended to choose a value 00: Do not run auxiliary
with other heat stages. Refer to the HVAC equipment manual to determine which value to select.
The different options available for this parameter are listed in the table below:
Table 6: Values for Running Auxiliary Heat With Other Heat Stages
Run Aux/W
With Other Heat Stages (03b)
2
00: do not run auxiliary with other heat stages
01: Run auxiliary with other heat stages
(04b): Auxiliary Heat (Aux/W
Applicable systems: Conventional and Heat Pump only if an auxiliary heat stage is supported.
Use this parameter to select the delay between starting the first heat stage and starting the auxiliary heating stage. This
parameter will be skipped if you select a system without auxiliary heat
The different options available for this parameter are listed in the table below:
Table 7: Values for Upstage Auxiliary Delay
Auxiliary Heat (Aux/W
)
2
Upstage Delay (04b)
00: 0 minutes
01: 1 minute
02: 2 minutes
03: 5 minutes
04: 10 minutes
05: 20 minutes
06: 30 minutes
07: 1 hour
08: 2 hours
09: 4 hours
10: 8 hours
11-24: 11-24 hours
Included with SMC55-HWQS version 7420 or newer, SMC55-RESI version 7302 or newer and HomeWorks Palladiom Thermostat version 1.10 or newer.
1
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(continued)
) With Other Heat Stages
2
Default Value of 03b
01: Run auxiliary with other heat
stages
) Upstage Delay
2
Default Value
of 04b
05: 20 minutes
1
]) or '04: 3 stage' (2 Compressor and 1 Auxiliary) for the previous
2
1
12
P/N 032498h
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