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Rule22-27.md

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CHW&CW - Rule 22-27

Schema Version: 0.0.16
Mandatory Rule: True
Rule ID: 22-27
Rule Description: Each baseline chiller shall be modeled with separate condenser-water pump interlocked to operate with the associated chiller.
Rule Assertion: B-RMR = expected value
Appendix G Section: Section 22 CHW&CW Loop
90.1 Section Reference: Section G3.1.3.11 Heat Rejection (Systems 7, 8, 11, 12, and 13)
Data Lookup: None
Evaluation Context: Building
Applicability Checks:

  1. Baseline ruleset model instance is modeled with at least one air-side system that is Type-7, 8, 11.1, 11.2, 12, 13, 7b, 8b, 11b, 12b, 13b.

Function Calls:

  1. get_baseline_system_types()

Applicability Checks:

  • Get baseline ruleset model instance system types: baseline_hvac_system_dict = get_baseline_system_types(B-RMR)

    • Check if baseline ruleset model instance is modeled with at least one air-side system that is Type-7, 8, 11.1, 11.2, 12, 13, 7b, 8b, 11b, 12b, 13b, i.e. with air-side system served by chiller(s), continue to rule logic: if any(sys_type in baseline_hvac_system_dict.keys() for sys_type in ["SYS-7", "SYS-8", "SYS-11.1", "SYS-11.2", "SYS-12", "SYS-13", "SYS-7B", "SYS-8B", "SYS-11B", "SYS-12B", "SYS-13B"]): CHECK_RULE_LOGIC

    • Else, rule is not applicable to baseline ruleset model instance: else: RULE_NOT_APPLICABLE

Rule Logic:

  • For each chiller in baseline ruleset model instance: for chiller_b in ASHRAE229.chillers:

    Rule Assertion:

    • Case 1. If chiller is interlocked with condenser water pump: if chiller_b.is_condenser_water_pump_interlocked: PASS

    • Case 2. Else: else: FAIL

Notes:

  1. Updated the Rule ID from 22-28 to 22-27 on 7/26/2022

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