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APPLICATIONS
-Space-Heating Applications-
-Recirculation-
*The recirculation pump is to be controlled by:
-Dual-set aquastat (recommended w/timer)
*The recirculation pump is to provide no less than 7.5 L/min (2 GPM) and no more than 15 L/min (4 GPM) through
each activated unit in the system.
Applications
Installation Manual
•
In order to purge air in water pipes within a closed-loop system, an air vent
and air separator should be installed in the system. Required circulation
flow rates are labeled next to each application diagram. These flow rate
requirements must be followed
.
•
Toxic chemicals used in boiler treatments such as alcohol, glycerol and glycol
groups must not be introduced into the system if the system incorporates an
open-loop potable water system.
•
The water heater can be used to supply potable water and space heating and
shall not be connected to any heating system or component(s) previously
used with non-potable water where any chemicals were added to the water
heating appliances.
•
Water heaters for combination water/space heating cannot be used in space
heating applications only.
•
When the system requires water for space heating at temperatures higher
than required for other uses, a means such as a mixing valve shall be installed
to temper the water for those other uses in order to reduce scald hazard
potential.
•
Water temperature over 52 °C (125 °F) can cause severe burns instantly or
death from scalding.
WARNING
Hot water outlet
Cold water inlet
Gas inlet
Unions
Ball valves
Gas supply
Expansion tank
Cold water
inlet
Y-Strainer
Check valve
Pressure
relief valve
Check valve
Air
separator
Recirculation
pump
Hot water outlet to fixtures
Air vent
S
This is a concept drawing only.
