Predictika · Coolant heater installation orders

An AI sales agent's Hydronic S3 heater installation order, checked before it goes out

An AI sales agent prepares an order for a Hydronic S3 Economy coolant heater with its fuel, supply voltage, coolant circuit and fuel line installation. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the technical limits and returns a verdict, every reason and the figures it computed.

Scope: Hydronic S3 Economy 12 V coolant heater orders (B4E, B5E, D4E, D5E): fuel, supply voltage, heat output, coolant circuit, fuel line and pump installation, altitude. See everything this validator covers

This validator models Hydronic S3 Economy 12 V heater installation orders, not just the scenarios shown below.

  • Model, fuel and output — the B 4 E and B 5 E run on petrol and are not approved for ethanol fuel E85; the D 4 E and D 5 E run on diesel with a blend of at most 30 percent FAME. The heat output control range is 1,800 to 4,300 watts (B 4 E), 1,800 to 5,000 watts (B 5 E), 1,300 to 4,300 watts (D 4 E) and 1,300 to 5,000 watts (D 5 E). The maximum output stated on the quote is compared with the model.
  • Electrical and coolant circuit — a 12 volt heater that operates between 10.5 and 16 volts, a minimum water flow of 300 litres per hour, an operating pressure of at most 2.5 bar overpressure and 10 to 50 percent antifreeze in the coolant.
  • Installation — metering pump fuel lines of at most 2 metres on the intake side and 6 metres on the pressure side, a metering pump delivery side rising at least 15 degrees, a water pump that is not installed with its pump head facing downwards, and an altitude above 1,500 m that needs a person to confirm.

Any Hydronic S3 Economy 12 V installation order that touches these rules is in scope — not only the scenarios pictured here. Not covered: prices (Eberspaecher does not publish a price list for these heaters, so this validator produces no price build-up or line-item quote), the 24 V and commercial variants, the Hydronic S3 D5L and D6L, other heater families, temperature limits, metering pump suction and pressure head limits, and installation positions.

The AI sales agentBuilds the heater installation order from the conversation and says it is ready.
Predictika validatorChecks every rule at once and returns the verdict, each finding, and the computed figures.

8 scenarios in 3 groups · each group runs from the agent’s first attempt to the outcome · click one to switch

What the agent proposes

The AI sales agent says

Illustrative agent statement. The validator receives the structured request below.

Proposing agent: AI sales agent (scripted)

Before sending, the agent must call Recorded run

Predictika validator


      

        
        
        
      

      
Waiting for the call.

      
    

  

  
  

    
Where rules-based CPQ gets it wrong
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Our assessment of what a typical rules-based CPQ (product rules, price rules and validation rules, as in Salesforce CPQ) does with the same cases. It is a judgment about effort and reliability, not a claim that nothing can be built.

    
What the validator caughtTypical rules-based CPQPredictika
Fuel that depends on the heater modelOnly with care
A product rule per model and fuel. It works, but every new model or fuel approval is another set of rules to maintain.		The model, fuel and blend are in one request and every pairing is checked together.
Output limits that differ by modelOnly with care
Each model has its own control range, so each needs its own comparison with the requested output.		The model sets the range and the requested output is compared on every call.
Stated maximum output that must match the modelOnly with care
A stated figure is a free-entry field; a rule can compare it with the model, but someone has to write and maintain that comparison.		The stated figure travels with the order and is compared with the model on every call.
Installation limits in the coolant circuit and fuel linesOnly with workarounds
These are numeric limits on lines the configurator rarely models, so they are often left to a technical review after the quote is saved.		Every limit is checked on every call, whatever order the choices arrive in.
Every problem returned in one answerOnly with workarounds
Rules tend to fire as the order is saved or a step is completed, so a rep often fixes one error and meets the next.		All findings come back together, whatever order the choices arrived in.

  

  

    
What this validator catches: findings from its test cases
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Every rule is checked on every call, in any order the choices arrive; one problem never hides another. Blocking findings stop the quote; approval findings need a person to sign off; everything else is computed.

    
1The fuel on the quote does not match the heater; the B models run on petrol and the D models on diesel.
2The B 4 E and B 5 E petrol heaters are not approved for operation with ethanol fuel E85.
3Diesel blended with at most 30 percent FAME to EN 14,214 is permitted; the quote has 40 percent.
4The 12 volt heater operates between 10.5 and 16 volts; the quote has a supply of 24.0 volts.
5The 12 volt heater operates between 10.5 and 16 volts; the quote has a supply of 9.0 volts.
6The quote asks for a heat output of 5,000 watts; this heater controls between 1,800 and 4,300 watts.
7The quote asks for a heat output of 1,500 watts; this heater controls between 1,800 and 4,300 watts.
8The quote states a maximum heat output of 5,000 watts; this heater model gives 4,300 watts.
9The heater needs a minimum water flow rate of 300 litres per hour; the quote has 250.
10The allowable operating pressure is up to 2.5 bar overpressure; the quote has 3.0 bar.
11The coolant mixture needs at least 10 percent and at most 50 percent antifreeze; the quote has 5 percent.
12The coolant mixture needs at least 10 percent and at most 50 percent antifreeze; the quote has 60 percent.
13The metering pump fuel line on the intake side may be at most 2 metres; the quote has 2.5 metres.
14The metering pump fuel line on the pressure side may be at most 6 metres; the quote has 7.0 metres.
15The metering pump must be installed with its delivery side rising at an angle of at least 15 degrees; the quote has 10 degrees.
16Installing the water pump with the pump head facing downwards is not allowed.
17Above 1,500 m the heater can be run only for short periods; a person should confirm the installation altitude of 2,500 m.
18The heater needs a minimum water flow rate of 300 litres per hour; the quote has 200.

  

  

    
Scenarios and results
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The recorded result of the validator for each scenario on this page: the request the AI agent sent, the verdict, and every finding, in the order they appear above.

    
1. Fuel, voltage and output: A B 5 E order with E85 fuel, a 24 V supply, low coolant flow and too much antifreeze

    
The agent's request. Please quote a Hydronic S3 Economy B 5 E heater installation on a 24 volt supply, running on ethanol fuel E85, for a heat output of 5,000 watts. The coolant circuit has a flow of 250 litres per hour at 1.5 bar with 60 percent antifreeze, the fuel lines are 1 m on the intake side and 3 m on the pressure side, the metering pump delivery side rises at 20 degrees, the water pump head faces upwards or sideways, and the heater is installed at 500 m altitude. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • E85 ethanol fuel not approved. The B 4 E and B 5 E petrol heaters are not approved for operation with ethanol fuel E85.
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  • Supply voltage outside the operating range. The 12 volt heater operates between 10.5 and 16 volts; the quote has a supply of 24.0 volts.
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  • Coolant flow too low. The heater needs a minimum water flow rate of 300 litres per hour; the quote has 250.
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  • Antifreeze share outside 10 to 50 percent. The coolant mixture needs at least 10 percent and at most 50 percent antifreeze; the quote has 60 percent.
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2. Fuel, voltage and output: The agent resubmits after fixing the errors

    
The agent's request. Please quote a Hydronic S3 Economy B 5 E heater installation on a 12 volt supply, running on petrol, for a heat output of 5,000 watts. The coolant circuit has a flow of 250 litres per hour at 1.5 bar with 30 percent antifreeze, the fuel lines are 1 m on the intake side and 3 m on the pressure side, the metering pump delivery side rises at 20 degrees, the water pump head faces upwards or sideways, and the heater is installed at 500 m altitude. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Coolant flow too low. The heater needs a minimum water flow rate of 300 litres per hour; the quote has 250.
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3. Fuel, voltage and output: The agent resubmits after fixing the errors

    
The agent's request. Please quote a Hydronic S3 Economy B 5 E heater installation on a 12 volt supply, running on petrol, for a heat output of 5,000 watts. The coolant circuit has a flow of 500 litres per hour at 1.5 bar with 30 percent antifreeze, the fuel lines are 1 m on the intake side and 3 m on the pressure side, the metering pump delivery side rises at 20 degrees, the water pump head faces upwards or sideways, and the heater is installed at 500 m altitude. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Heater output range. Heat output control range of 1,800 to 5,000 watts for the selected heater.
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4. Diesel fuel lines and pump installation: A D 5 E order with 40 percent FAME, long fuel lines and a downward-facing water pump

    
The agent's request. Please quote a Hydronic S3 Economy D 5 E heater installation on a 12 volt supply, running on diesel with 40 percent FAME, for a heat output of 4,000 watts and a stated maximum output of 5,000 watts. The coolant circuit has a flow of 500 litres per hour at 1.5 bar with 30 percent antifreeze, the fuel lines are 2.5 m on the intake side and 7 m on the pressure side, the metering pump delivery side rises at 10 degrees, the water pump head faces downwards, and the heater is installed at 500 m altitude. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Too much biodiesel blend. Diesel blended with at most 30 percent FAME to EN 14,214 is permitted; the quote has 40 percent.
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  • Fuel line too long on the intake side. The metering pump fuel line on the intake side may be at most 2 metres; the quote has 2.5 metres.
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  • Fuel line too long on the pressure side. The metering pump fuel line on the pressure side may be at most 6 metres; the quote has 7.0 metres.
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  • Metering pump angle too shallow. The metering pump must be installed with its delivery side rising at an angle of at least 15 degrees; the quote has 10 degrees.
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  • Water pump head facing downwards. Installing the water pump with the pump head facing downwards is not allowed.
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5. Diesel fuel lines and pump installation: The agent resubmits after fixing the errors

    
The agent's request. Please quote a Hydronic S3 Economy D 5 E heater installation on a 12 volt supply, running on diesel with 30 percent FAME, for a heat output of 4,000 watts and a stated maximum output of 5,000 watts. The coolant circuit has a flow of 500 litres per hour at 1.5 bar with 30 percent antifreeze, the fuel lines are 2 m on the intake side and 6 m on the pressure side, the metering pump delivery side rises at 20 degrees, the water pump head faces upwards or sideways, and the heater is installed at 500 m altitude. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Heater output range. Heat output control range of 1,300 to 5,000 watts for the selected heater.
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6. Altitude and coolant pressure: A B 5 E order at 2,500 m with the coolant pressure above the limit

    
The agent's request. Please quote a Hydronic S3 Economy B 5 E heater installation on a 12 volt supply, running on petrol, for a heat output of 4,500 watts and a stated maximum output of 5,000 watts. The coolant circuit has a flow of 500 litres per hour at 3 bar with 30 percent antifreeze, the fuel lines are 1 m on the intake side and 3 m on the pressure side, the metering pump delivery side rises at 20 degrees, the water pump head faces upwards or sideways, and the heater is installed at 2,500 m altitude. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Coolant pressure too high. The allowable operating pressure is up to 2.5 bar overpressure; the quote has 3.0 bar.
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  • Altitude above 1,500 m to confirm. Above 1,500 m the heater can be run only for short periods; a person should confirm the installation altitude of 2,500 m.
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7. Altitude and coolant pressure: The agent resubmits after fixing the errors

    
The agent's request. Please quote a Hydronic S3 Economy B 5 E heater installation on a 12 volt supply, running on petrol, for a heat output of 4,500 watts and a stated maximum output of 5,000 watts. The coolant circuit has a flow of 500 litres per hour at 2.5 bar with 30 percent antifreeze, the fuel lines are 1 m on the intake side and 3 m on the pressure side, the metering pump delivery side rises at 20 degrees, the water pump head faces upwards or sideways, and the heater is installed at 2,500 m altitude. It is ready to send.

    
Verdict: Needs approval.

    
    
      
  • Altitude above 1,500 m to confirm. Above 1,500 m the heater can be run only for short periods; a person should confirm the installation altitude of 2,500 m.
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  • Heater output range. Heat output control range of 1,800 to 5,000 watts for the selected heater.
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8. Altitude and coolant pressure: The agent resubmits after fixing the errors

    
The agent's request. Please quote a Hydronic S3 Economy B 5 E heater installation on a 12 volt supply, running on petrol, for a heat output of 4,500 watts and a stated maximum output of 5,000 watts. The coolant circuit has a flow of 500 litres per hour at 2.5 bar with 30 percent antifreeze, the fuel lines are 1 m on the intake side and 3 m on the pressure side, the metering pump delivery side rises at 20 degrees, the water pump head faces upwards or sideways, and the heater is installed at 1,200 m altitude. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Heater output range. Heat output control range of 1,800 to 5,000 watts for the selected heater.
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Narration transcript
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The text of the narrated walkthrough, step by step.

    
    
      
  1. Welcome to a demo of Predictika's Validator. An AI sales agent prepares an order for a Hydronic S3 Economy coolant heater with its fuel, supply voltage, coolant circuit and fuel line installation. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the technical limits and returns a verdict, every reason and the figures it computed.
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  2. I will start with the first request by the agent.
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  3. The agent says. Please quote a Hydronic S3 Economy B 5 E heater installation on a 24 volt supply, running on ethanol fuel E85, for a heat output of 5,000 watts. The coolant circuit has a flow of 250 litres per hour at 1.5 bar with 60 percent antifreeze, the fuel lines are 1 m on the intake side and 3 m on the pressure side. The rest of the request is on screen.
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  4. Before it goes out, the agent calls the validator.
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  5. Blocked, with four findings, all in one answer. The B 4 E and B 5 E petrol heaters are not approved for operation with ethanol fuel E85. The 12 volt heater operates between 10.5 and 16 volts; the quote has a supply of 24.0 volts. The heater needs a minimum water flow rate of 300 litres per hour; the quote has 250. The other one is on screen.
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  6. The validator returned four blocking findings in one answer. A check that reads one field at a time would pass most of this; it shows only when the choices in the quote are checked against each other.
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  7. What this shows: for installation limits in the coolant circuit and fuel lines, a rules-based CPQ can do this only with workarounds.
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  8. Now the agent resubmits.
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  9. The corrected request. It changes the fuel to petrol, the supply voltage to 12 and the antifreeze to 30 percent.
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  10. It calls the validator again.
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  11. Still blocked, with one finding, all in one answer. The heater needs a minimum water flow rate of 300 litres per hour; the quote has 250.
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  12. Three findings cleared; still blocked on coolant flow too low.
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  13. The agent resubmits once more.
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  14. The revised request. It changes the coolant flow to 500 l/h.
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  15. It calls the validator once more.
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  16. This time the validator clears it.
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  17. The earlier finding is cleared.
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  18. Four problems caught in one call, fixed in two passes, and a clean quote. That is the value of Predictika's validator: catching mistakes before they reach the customer.
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