Aquacal LTP0024 Service manual

LTP0024

1
Technical Service Bulletin
Affects Models:
[2.1]
Title: Bypass Check Valve for Ti-Equipped Heaters
All Heat Pumps Equipped with Titanium Condenser
Questions ?... Contact Technical Support at: 800-786-7751
Purpose:
Shouldplumbingsystemdesignresultinwaterflowexceeding70-GPM,toavoiddamagetocondens-
er assembly, a bypass valve must be installed. While a system equipped with a 2-HP or greater
circulation pump will nearly always require a bypass, well-plumbed systems, using less than a 2-HP
pump, may also require a bypass. Whenever in doubt, and if as-built engineering data is unavailable,
actual water flow should be verified by taking suction and discharge pump pressures, converting
thesepressurestofoot-of-head, and plotting actual GPM on the installed pump’s factory performance
curve. ContactAquaCal factory Technical Support (800-786-7751) for further information concerning
site verification of water flow GPM.
This TSB provides the specification, and prescribed placement location within the plumbing system
(see drawing below), for the check valve required for bypassing excess water flow around AquaCal,
titanium condenser-equipped heat pumps.
Procedure:
Installa 5-lbbypassspringcheckvalve(AquaCalP.N.:2556,orequaltoDelIndustries PN: CO-0103)
across the “IN” and “OUT” water ports of the heat pump. Make certain the direction of the check valve
flow will be from water inlet to water outlet. The check valve must be located within 3-feet of the heat
pump, with no bends or reducers between the check valve and heater.
TSB#:P-1032
Water flow exceeding 70-GPM may damage titanium condenser; such damage will NOT be covered
undertheequipment warranty.Installabypasscheckvalve (AquaCalP.N.:2556, orequaltoDelIndustries
P.N.:CO-0103) wheneverwater flowrate mayexceed 70-GPM.
Failureto heedthe followingmay resultin equipmentdamage.
CAUTION !
FLOW GREATER THAN 70-GPM
AQ P
ART
#: 2556
-
OR
-
D
EL
I
ND
. # CO-0103