Hi again Darrell, I found this info on a LP fired instant water heater... Might be a better way to go.... Just a thought...
Gas instantaneous, power vented. Full gas modulation temperature control.Dimensions:
11.5" Wide x 13.5" Deep x 19" High, including Power Vent. Weight: 30.5 pounds full.Hook-ups:Electric: 18-2 x 2' lead.
Gas: Brass 3/8" flare inside case, rear accessible.
Water: 1/2" OD copper tubing. Brass compression
to 1/2" NPT elbow
can be installed
or as specified.
Capacity:55,000 Btu input - 44,000 Btu output at maximum burn at 8.5 WCI manifold pressure.
15,000 Btu input - 10,600 Btu output at low burn at 1.2 WCI manifold pressure.
(88°F temperature rise per gallon per minute continuous flow at high burn).
:2.55 lbs per hour at maximum input. ( At 2 GPM of water, 20 lbs of propane
will produce over 940 gallons of hot water).Mounting:Side mounted keyed bracket. Left or right side mounted.
Clearances:Zero clearance top (blower), bottom and sides. 2" in back for hook-ups. Enough space in front to remove cover for service
:“2” power vent with proofing switch. (2” stainless flex duct recommended to the outside and can
run up to 15').
Construction:Modular: Three assemblies; gas, electronics
Burner: High primary air, 12 element, atmospheric type. Aluminized steel
body with stainless flame strips.
: Copper fin tube type with wrap for cooling
in, potted, works-in-a-drawer.
Case and flue assembly are stainless steel
Fuel:Propane at 11 WCIPower:Burner: 12 element high primary air, atmospheric type with stainless steel flame strips. Aluminum
manifold with brass pressure tap.
Orifices, brass # 71 x 12. Gas Valve. Redundant solenoid with integral regulatorWater Temperature:Factory set at 115° F. Can be field adjusted 90° to 135°F.
MountingMounting flanges included. Must be mounted in accordance with any applicable Coast Guard and ABYC recommendations.
Features:The Shower-Mate is pilotless. There is no flame unless water flow is sensed.
Flame rectification: Gas valve shuts off in .8 of a second if there is a flame outage.
Redundant gas solenoid.
Electronic high temperature shut-off (two).
ECO high temperature shut off @ 165°F with manual reset.
Pressure relief valve at 100 PSI.
Power vent must proof fluing before gas valve opens.
ue to continuous product improvement,
PrecisionTemp reserves the right to change specifications at any time.