The Glitch & The Fix

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An installer is asked to pipe up two larger commercial air handlers supplied by a dual boiler setup. 

An installer plans to use a single-speed monobloc air-to-water heat pump to supply several panel radiators. 

A multiple boiler system is set up as shown in Figure 1. The objective is to add heat to the system in three on/off stages. 

A client asks a heating contractor to set up a floor heating system for a new 7,500 square foot machine shop.

An installer pipes up the system shown in Figure 1. Its purpose is to provide two zones of space heating.  

I recently had an inquiry from a designer who needed to combine some high temperature loads with low temperature loads. 

An installer is trying to wire up a two-stage heat pump for heating and cooling operation.

Figure 1 shows a hydronic system that's intended to supply four panel radiators, each with its own thermostatic radiator valve, and an indirect water heater from a gas-fired sectional cast-iron boiler.

An installer is asked to connect an old (but still working) propane-fueled cast-iron boiler, which was salvaged from another project, to a slab-on-grade floor heating system in a new workshop.

An installer is asked to pipe two independent zones of high mass floor heating to a conventional gas-fired boiler.