Space Pak CSOLSTICE SIM-036, Installation And Operation Manual

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SIM Inverter Monobloc Air-to-Water Heat Pump
Parameter R (Temperature Parameter)
When the mode is hot water mode and tank temperature<R01-R04, the unit is running in hot water mode and the target temperature
is R01. When water tank temperature≥R01+R05, the unit will exit hot water mode. The unit use the hot water side to defrost when
in defrosting.
When the mode is heating mode and inlet water temperature<R02-R04, the unit is running in heating mode and the target temperature
is R02. When inlet water temperature ≥R02+R05, the unit will trun off.
When the mode is heating mode and inlet water temperature >R03+R04, the unit is running in cooling mode and the target temperature
is R03. When inlet water temperature ≤R03+R05, the unit will turn off.
Compressor Short Cycle Protection
In order to protect the compressor from short cycling, and ensure proper oil circulation and return, the compressor will remain running at
startup for a minimum of three minutes, and remain off for minimum of three minutes at shut-off, regardless of whether the temperature
setpoint has been satisfied.
The compressor can be restarted after 3min when switch OFF. It is applicable to all conditions.
ModBus BMS Controls
Every SIM unit has the ability to communicate with Building Automation Systems (BMS) through ModBus. The “RS485” terminals on
the main control board will be utilized for this feature. The table below lists all addresses available. It is important to note that some
are read only while others can be changed and are writable functions.
Prior to connecting to BMS the following steps need to be taken
1. Ensure the transmission format is set in the BMS when trying to connect. This includes baud rate, start bit, byte width, parity, and
stop bits. These can be found in the table below labeled “Transmission Format”
2. Connect the - wire (from the BMS) to the terminal labeled “RS485 -” in the SIM electrical cabinet and + wire (from the BMS) to
the terminal labeled “RS485 +” in the SIM electrical cabinet. Locate a GND (if required) and wire from BMS to a ground terminal
in the SIM electrical cabinet.
3. Ensure that the SIM unit is in the "Master" mode set at the local controller through parameter H02. (to access H02 press the
setting key, passcode= 66, system tab, change parameter H02 accordingly)
4. Ensure parameter H15 is set to the address of the unit being controlled (if it's the first unit H15 = 1, 2nd unit H15 = 2 etc...). To
access parameter H15 press the settings key, passcode= 66, system tab, change parameter H15 accordingly).
5. Place a jumper on the "Remote ON/OFF" terminals located at the main board connections.
Important Note: All temperatures values in the MODBUS registers are stored as tenths of a degree Celsius, regardless of whether the
unit is set to display Fahrenheit or Celsius.
Therefore, a temperature value such as register 1192 = Heating Target Temperature may be stored as 500. Divide this value by 10
and you get 50.0°C. To determine the equivalent value in Fahrenheit, multiply this value by 9/5, to get 90, then add 32. The Fahrenheit
temperature is 122°F.
If you wish to change the target temperature to 115°F, first subtract 32 to get 83, then multiply by 5/9. The Celsius temperature is 46.1°C,
multiply this by 10 and enter the value 461.
When a value represents a difference between two temperatures, such as register 1194, Start temperature differential, the conversion
from Celsius to Fahrenheit is simply, multiply by 9/5, and from Fahrenheit to Celsius is multiply by 5/9.
For example, if the default value is 36, divide this by 10 and it represents 3.6 deg Celsius difference, multiply by 9/5 to get 6.5 deg
Fahrenheit difference. Conversely, if you want to set this value to 5 deg Fahrenheit differential, multiply by 5/9 to get 2.8 deg Celsius
differential. Divide this by 10, and set the register value to 28.