Predictika · Shower systems

An AI sales agent's Grohtherm SmartControl shower quote, checked before it goes out

An AI sales agent prepares a quote for a Grohtherm SmartControl shower: the trim, the finish, what is connected to each outlet, the water heater, the supply pressures and temperatures, the distance to the finished wall, and the flow it quotes. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of GROHE's published spec sheets and installation guides and returns a verdict, every reason and the figures it looked up.

Scope: GROHE Grohtherm SmartControl single, dual and triple function trims on one Rapido SmartBox 35 601, from the published spec sheets and installation guides. See everything this validator covers

This validator models quotes for the Grohtherm SmartControl single (29 140), dual (29 141) and triple (29 142) function trims installed on a Rapido SmartBox 35 601, as published in the three spec sheets, the SmartBox spec sheet and the SmartBox and trim installation guides, not just the scenarios shown below.

  • Outlets and boxes — each trim needs its own SmartBox, and the outlet pattern allowed for each trim (single, dual and triple), with the tub spout and the optional flow reducer.
  • Pressures and temperatures — the minimum and maximum supply pressure, the recommended flow pressure range, the pressure reducing valve above 72.5 psi, the hot water limits and the gap to the mixed water temperature, and the limiter above 115 °F.
  • Water heater — pressurised storage and thermally or hydraulically controlled instantaneous heaters are listed; unpressurised storage is a block and an electronic instantaneous heater needs a person to confirm.
  • Installation — the reversed thermostat cartridge when hot water is on the right, and the extension needed for the distance to the finished wall, up to 3 1/8 inches.
  • Stated flow — the published flow with all outlets open at the pressure and outlet count, compared with the flow the quote states.

Any SmartControl quote on a single Rapido SmartBox 35 601 that touches these rules is in scope — not only the scenarios pictured here. Not covered: prices (the price book was not readable, so this validator produces no price build-up), the volume control trim 29 122, two-box configurations with four to six outlets, metric flow tables, and other GROHE or LIXIL product lines. Where a pressure is not on the published flow table, the validator asks a person to confirm instead of guessing.

The AI sales agentBuilds the SmartControl quote 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 4 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
Outlet pattern for each trimOnly with workarounds
Single, dual and triple trims each allow only certain outlet connections, and which outlet takes the tub spout changes what else is allowed.		The allowed outlet pattern for the trim is checked on every call.
Flow reducer with a tub spoutOnly with care
The optional reducer is allowed on most systems but not on dual or triple systems that include a tub spout, so a valid option on one quote is wrong on another.		The reducer is checked against the trim and the outlets together.
Flow looked up from the pressureOnly with workarounds
The published flow depends on the trim, the pressure and the outlets open, so the quoted flow is easy to copy from the wrong row.		The flow is looked up on every call and compared with the number the quote states.
Extension for the wall distanceOnly with care
The distance to the finished wall decides whether the included extension is enough, a separate kit is needed, or the installation is out of range.		The distance is classified on every call and the kit is required when needed.
Pressure and temperature limitsOnly with workarounds
Supply pressure, flow pressure, hot water and mixed water each have limits, and some only call for a person to confirm.		Each limit is checked, with blocks and approvals reported separately.
Every problem returned in one answerOnly with workarounds
Rules tend to fire as the quote 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 outlet connections do not match the trim; a single function trim uses one of the box outlets B or C, a dual function trim uses B and C, a triple function trim uses A, B and C, and unused outlets must be plugged.
2The quote has 1 Rapido SmartBox 35 601 unit(s) and 2 SmartControl trim(s); each trim must be installed with its own SmartBox.
3The quote has 2 Rapido SmartBox 35 601 unit(s) and 1 SmartControl trim(s); each trim must be installed with its own SmartBox.
4The optional flow reducer cannot be used for shower systems that include a tub spout.
5The flow pressure is 14.5 psi; the recommended range is 21.75 to 72.5 psi, so a person should confirm.
6The flow pressure is 10.0 psi; with downstream resistances the thermostat needs at least 14.5 psi.
7The flow pressure is 87.0 psi; the recommended range is 21.75 to 72.5 psi, so a person should confirm.
8The installation guide publishes flow rates only at 14.5, 29, 43.5, 58, 72.5 and 87 psi, so the flow at 35.0 psi is not checked and a person should confirm.
9The flow pressure is 100.0 psi; the recommended range is 21.75 to 72.5 psi, so a person should confirm.
10The installation guide publishes flow rates only at 14.5, 29, 43.5, 58, 72.5 and 87 psi, so the flow at 100.0 psi is not checked and a person should confirm.
11The supply pressure is 80.0 psi; above 72.5 psi a pressure reducing valve should be fitted to meet the noise levels, and the quote has none, so a person should confirm.
12The supply pressure is 150.0 psi; the maximum operating pressure is 145 psi.
13The hot water inlet is 158.0 F; 140 F is recommended for energy saving, so a person should confirm.
14The hot water inlet is 160.0 F; the maximum is 158 F.
15The hot water at the supply connection is 103.0 F; it must be at least 3.6 F higher than the mixed water temperature of 100.0 F.
16The mixed water temperature is 120.0 F; the trim has a temperature limiter at 115 F.
17Operation with unpressurised storage heaters (displacement water heaters) is not possible.
18The installation guide lists pressurised storage heaters and thermally or hydraulically controlled instantaneous water heaters; an electronic instantaneous heater is not listed, so a person should confirm.
19Hot water on the right and cold on the left needs the reversed thermostat cartridge 49 003, and the quote has none.
20The distance to the finished wall is 2.5 inches, which needs extension kit 14 048 000, and the quote has none.
21The distance to the finished wall is 3.5 inches; the installation guide covers up to 3 1/8 inches.
22The quote states 9.0 GPM with all outlets open, but the published flow for this configuration at this pressure is 7.7 GPM.
23The quote states 7.7 GPM with all outlets open, but the published flow for this configuration at this pressure is 9.5 GPM.

  

  

    
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. Dual trim, far wall: Dual in Brushed Nickel with the wall 2.5 inches from the cartridge, flow stated at 9 GPM

    
The agent's request. Please quote a dual function Grohtherm SmartControl trim in Brushed Nickel on one Rapido SmartBox 35 601, with showerhead on outlet B, hand shower on outlet C. The water heater is pressurised storage, the supply pressure is 60 psi, the flow pressure is 43.5 psi, the hot water is 140 F and the mixed water 100 F, and the finished wall is 2.5 inches from the cartridge. The quote states 9 GPM with all outlets open. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Extension kit needed. The distance to the finished wall is 2.5 inches, which needs extension kit 14 048 000, and the quote has none.
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  • Stated flow does not match. The quote states 9.0 GPM with all outlets open, but the published flow for this configuration at this pressure is 7.7 GPM.
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2. Dual trim, far wall: The agent resubmits after fixing the errors

    
The agent's request. Please quote a dual function Grohtherm SmartControl trim in Brushed Nickel on one Rapido SmartBox 35 601, with showerhead on outlet B, hand shower on outlet C. The water heater is pressurised storage, the supply pressure is 60 psi, the flow pressure is 43.5 psi, the hot water is 140 F and the mixed water 100 F, and the finished wall is 2.5 inches from the cartridge. The quote states 9 GPM with all outlets open. Also, extension kit 14 048 000 is included. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Stated flow does not match. The quote states 9.0 GPM with all outlets open, but the published flow for this configuration at this pressure is 7.7 GPM.
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3. Dual trim, far wall: The agent resubmits after fixing the errors

    
The agent's request. Please quote a dual function Grohtherm SmartControl trim in Brushed Nickel on one Rapido SmartBox 35 601, with showerhead on outlet B, hand shower on outlet C. The water heater is pressurised storage, the supply pressure is 60 psi, the flow pressure is 43.5 psi, the hot water is 140 F and the mixed water 100 F, and the finished wall is 2.5 inches from the cartridge. The quote states 7.7 GPM with all outlets open. Also, extension kit 14 048 000 is included. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Published flow. 2 outlet(s) connected; with all outlets open the published flow is 7.7 GPM at 43.5 psi.
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4. Triple trim with a tub spout: Triple in Matte Black with a tub spout, flow reducer and hot water on the right

    
The agent's request. Please quote a triple function Grohtherm SmartControl trim in Matte Black on one Rapido SmartBox 35 601, with tub spout on outlet A, showerhead on outlet B, hand shower on outlet C. The water heater is pressurised storage, the supply pressure is 60 psi, the flow pressure is 43.5 psi, the hot water is 140 F and the mixed water 100 F, and the finished wall is 1.25 inches from the cartridge. The quote states 9.5 GPM with all outlets open. Also, the optional flow reducer is included, and hot water is on the right and cold on the left. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Flow reducer not allowed with a tub spout. The optional flow reducer cannot be used for shower systems that include a tub spout.
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  • Hot on the right needs the reversed cartridge. Hot water on the right and cold on the left needs the reversed thermostat cartridge 49 003, and the quote has none.
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5. Triple trim with a tub spout: The agent resubmits after fixing the errors

    
The agent's request. Please quote a triple function Grohtherm SmartControl trim in Matte Black on one Rapido SmartBox 35 601, with tub spout on outlet A, showerhead on outlet B, hand shower on outlet C. The water heater is pressurised storage, the supply pressure is 60 psi, the flow pressure is 43.5 psi, the hot water is 140 F and the mixed water 100 F, and the finished wall is 1.25 inches from the cartridge. The quote states 9.5 GPM with all outlets open. Also, hot water is on the right and cold on the left, and the reversed thermostat cartridge is included. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Published flow. 3 outlet(s) connected; with all outlets open the published flow is 9.5 GPM at 43.5 psi.
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6. Dual trim at high pressure: Dual in Hard Graphite at 80 psi supply with no pressure reducing valve

    
The agent's request. Please quote a dual function Grohtherm SmartControl trim in Hard Graphite on one Rapido SmartBox 35 601, with showerhead on outlet B, hand shower on outlet C. The water heater is pressurised storage, the supply pressure is 80 psi, the flow pressure is 43.5 psi, the hot water is 140 F and the mixed water 100 F, and the finished wall is 1.25 inches from the cartridge. The quote states 7.7 GPM with all outlets open. It is ready to send.

    
Verdict: Needs approval.

    
    
      
  • Pressure reducing valve recommended. The supply pressure is 80.0 psi; above 72.5 psi a pressure reducing valve should be fitted to meet the noise levels, and the quote has none, so a person should confirm.
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  • Published flow. 2 outlet(s) connected; with all outlets open the published flow is 7.7 GPM at 43.5 psi.
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7. Dual trim at high pressure: The agent resubmits after fixing the errors

    
The agent's request. Please quote a dual function Grohtherm SmartControl trim in Hard Graphite on one Rapido SmartBox 35 601, with showerhead on outlet B, hand shower on outlet C. The water heater is pressurised storage, the supply pressure is 80 psi, the flow pressure is 43.5 psi, the hot water is 140 F and the mixed water 100 F, and the finished wall is 1.25 inches from the cartridge. The quote states 7.7 GPM with all outlets open. Also, a pressure reducing valve is fitted. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Published flow. 2 outlet(s) connected; with all outlets open the published flow is 7.7 GPM at 43.5 psi.
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8. Unpressurised heater: Dual in Chrome on an unpressurised storage water heater

    
The agent's request. Please quote a dual function Grohtherm SmartControl trim in Chrome on one Rapido SmartBox 35 601, with showerhead on outlet B, hand shower on outlet C. The water heater is unpressurised storage, the supply pressure is 60 psi, the flow pressure is 43.5 psi, the hot water is 140 F and the mixed water 100 F, and the finished wall is 1.25 inches from the cartridge. The quote states 7.7 GPM with all outlets open. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Unpressurised water heater not possible. Operation with unpressurised storage heaters (displacement water heaters) is not possible.
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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 a quote for a Grohtherm SmartControl shower: the trim, the finish, what is connected to each outlet, and more. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of GROHE's published spec sheets and installation guides and returns a verdict, every reason and the figures it looked up.
    2. 
      
  2. I will start with the first request by the agent.
    3. 
      
  3. The agent says. Please quote a dual function Grohtherm SmartControl trim in Brushed Nickel on one Rapido SmartBox 35 601, with showerhead on outlet B, hand shower on outlet C. The water heater is pressurised storage, the supply pressure is 60 psi, the flow pressure is 43.5 psi, the hot water is 140 F and the mixed water 100 F. The rest of the request is on screen.
    4. 
      
  4. Before it goes out, the agent calls the validator.
    5. 
      
  5. Blocked, with two findings, all in one answer. The distance to the finished wall is 2.5 inches, which needs extension kit 14 048 000, and the quote has none. The quote states 9.0 GPM with all outlets open, but the published flow for this configuration at this pressure is 7.7 GPM.
    6. 
      
  6. The validator returned two 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.
    7. 
      
  7. What this shows: for flow reducer with a tub spout, a rules-based CPQ is error-prone for this.
    8. 
      
  8. Now the agent resubmits.
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  9. The corrected request. It sets the extension kit to yes.
    10. 
      
  10. It calls the validator again.
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  11. Still blocked, with one finding, all in one answer. The quote states 9.0 GPM with all outlets open, but the published flow for this configuration at this pressure is 7.7 GPM.
    12. 
      
  12. One finding cleared; still blocked on stated flow does not match.
    13. 
      
  13. The agent resubmits once more.
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  14. The revised request. It changes the flow on the quote to 7.7.
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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. Two 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.
    19.