Is the retailer rerouting the coolant into his cellar, or just using the fact that his cellar is cold because of the proximity of the pipe? If the latter, I'd

Is the retailer rerouting the coolant into his cellar, or just using the fact that his cellar is cold because of the proximity of the pipe? If the latter, I'd say there is no theft- the brewer needs to insulate his pipe to prevent thermal losses.