3G: Building Heating; 3G.1: System Volume - Quantum 67ACW2-134 Owner's Manual

Owners Manual
Figure 5: Hydraulic Connections To Pool Heater
Showing shut-off by-pass valves (Optionally fitted by plumber to isolate the heater)
Quantum Heater Unit
All Pipes Are 40 mm PVC
Important Note
Pool Heaters have an internal automatic by-pass
system and do not require the external by-pass for
operation. However, if desired, an external
by-pass can be plumbed in for use if the heater is
disconnected or to isolate it from the hydraulic
circuit. In this way water would still flow but not
through the heater unit. When the heater is in
operation, this by-pass must not be used i.e. the 3
way valves must be set to channel the full flow
through the heater unit and nothing via the
external by-pass.

3g: Building Heating

3g.1: System Volume

It is important to have adequate water volume in the system to provide an opportunity for the
water heater to sense a load change, adjust to the change and stabilize. As the expected load
change becomes more rapid, a greater water volume is needed. The system water volume is the
Document Number : QDC0049PD-5
Quantum Energy Technologies
OUT
Optional
Shut-off
By Pass
IN
Heated Water To Pool
CL
FLT
Cold Water From Pool
LEGEND
Barrel Unions
3Way Isolating Valves
(Optional)
Water Circulation Pump
Suggest 0.5 HP
CL
Chlorinator
FLT
Pool Filter
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