Bryan Boilers CLM-120-WT-FDG-844-AV-CM-IN manual Hot service

Bryan Water-Pak “Indirect Storage Water Heating” is scale-free, corrosion-free and trouble-free

Heat transfer fluid (Primary Water) recirculated by thermal action up through heater tubes, past indirect heat exchanger and down.

Flue gases to vent.

This is the secret — Service hot water circulated continuously through the copper indirect heat exchanger, absorbing heat from warm Primary Water. Service hot water does not come in contact with hot flue gases; thus it remains below critical scaling and corrosion temperatures.

Hot service	Non-ferrous water connections
water.

Insulated PVC tank jacket (optional)

Hot water storage tank — 125 psi or 150 psi ASME Code.

Manhole 11" × 15"

Cold service water

High temperature combus-	Burner — gas, oil or	Bronze circulation pump — operates
tion gases heat Primary	gas-oil combination.	continuously to reduce stratification in
Water (heater transfer fluid)		storage tank during standby.
only.

	Structural
	steel skid
Drain	Internal tank lining for
	corrosion protection —
	phenolic-epoxy or
	cement.

Burner Flame Heat Primary Water Hot Service Water Cold Service Water

Horizontal Heater-Tank Setting AH			Vertical Heater-Tank Setting AV
Hot water	Relief	Cold inlet		Hot outlet	Relief
				tapping
	valve
storage tank		tapping	Hot water		valve
	Thermometer		storage tank
	Hot outlet		Draft diverter or		Thermometer
	tapping
			barometric
Draft diverter or			control		Cold inlet
barometric
					tapping
control
			Water
Water		Structural	heater		Structural
		steel skid			steel skid
heater
	Tank drain
Expansion tank	Circulator		Expansion tank	Circulator