
Figure 27
Flow Rate (GPM) vs. Head Loss (feet) for CX - Space Heating
The internal space-heating pump must be set to setting 3. The boiler pump is designed to
circulate through a short, primary loop only.
To simplify the control application, promote good loads and flow management, installers must
conform to the piping design configurations provided.
Propylene glycol usage
Warning
Do not use automotive-type ethylene or other types of automotive glycol antifreeze, or
undiluted antifreeze of any kind. This may result in severe boiler damage. Installers
must ensure that glycol solutions are formulated to inhibit corrosion in hydronic
heating systems of mixed materials. Improper mixtures and chemical additives may
cause damage to ferrous and non-ferrous components as well as non-metallic, wetted
components, normally found in hydronic systems. Ethylene glycol is toxic, and may be
prohibited for use by codes applicable to your installation location. For environmental
and toxicity reasons, IBC recommends only using non-toxic propylene glycol.
Note
Any glycol solution used in the system
must
be non-toxic due to the DHW heat
exchanger.
Propylene glycol solution is commonly used in a closed loop where freeze protection is required.
Its density is lower than that of water, resulting in lower thermal performance at a given flow and
pressure. Generally, a 50%:50% solution of propylene glycol and water requires an increased
48
Section: Installation
Содержание CX Series
Страница 6: ...Boiler part diagrams CX 150 CX 199 118 Installation Commissioning Report 122 6 Section Contents...
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Страница 13: ...Figure 2 Top and bottom view CX 150 CX 199 dimensions Figure 3 Front and side view CX 199 13 CX 199 dimensions...
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Страница 114: ...Appendices Wiring diagrams Figure 48 Controller electrical diagram 114 Section Troubleshooting...
Страница 115: ...Figure 49 Internal wiring diagram 115 Wiring diagrams...
Страница 116: ...Figure 50 Sequence of Operation 116 Section Troubleshooting...
Страница 117: ...8 4 Exploded views of the CX 150 CX 199 appliance 117 8 4 Exploded views of the CX 150 CX 199 appliance...
Страница 119: ...119 Boiler part diagrams CX 150 CX 199...