Raypak RAYTHERM P-926 User Manual Page 1

INSTALLATION & OPERATINGINSTRUCTIONSCATALOG NO. 6200.51P Effective: 05-24-10 Replaces: 04-09-07 P/N 240251 Rev. 17WARNING: If these instructions a

the time clock may be used for this purpose withinstructions not to override this sequence manually.See wiring diagram section for electrical hookup l

11Water Pressure SwitchOn Models 926-1223 built with a Unitherm Governor(UG), a water pressure switch is provided in the heaterto shut down the gas va

12Raypak recommends the installation of an air bleedvent at a suitable location (usually the highest point inthe plumbing) to remove air from the pipi

132. Lace metal strapping or clamps, (NOT PROVID-ED) through the ¾” slots on the cover and fastensecurely to pipe as shown in Fig. 15 & 16. Do not

14To adjust the temperature:1. Both isolation valves must be fully open.2. Adjust Bypass Valve "A" 1/2 open and BalancingValve "B"

156. As the pool temperature rises to the desired tem-perature as controlled by the Pool aquastat, smalladjustments to valves "A" and "

16BLENDED WATER TEMPERATURE(THERMOMETER AT HEATER INLET)HEATER OUTLET TEMPERATURETHERMOMETERHEATER THERMOSTATRECOMMENDED FIELD INSTALLEDISOLATION VALV

17BLENDED WATER TEMPERATURE(THERMOMETER AT HEATER INLET)HEATER OUTLET TEMPERATURETHERMOMETERHEATER THERMOSTATRECOMMENDED FIELD INSTALLEDISOLATION VALV

18External Auxiliary BypassValve (Where Required)926-1223 Models OnlyAn auxiliary bypass valve should be used when flowrates exceed 120 gpm (usually a

19Low Water CutoffAutomatically shuts down burner whenever waterlevel drops below probe. A 3 to 5 second time delayprevents premature lockout due to t

2WATER CHEMISTRY(Corrosive water voids all warranties)For your health and the protection of your pool equipment, it is essential that yourwater be che

20Wiring Diagram—Models 926–1223

21Wiring Diagram—Models 1287–1826

22Wiring Diagram—Models 2100–2500

23Wiring Diagram—Models 3001–4001

24SERVICINGGeneral Location Of ControlsModels 926-1826Models 2100-4001Temperature ControlThe pool water temperature is controlled by the poolthermosta

25Two-Speed PumpsIn some cases, the flow on the low speed is insufficientto operate the heater. This is apparent when the pres-sure switch cannot be f

26After Start-UpPilot System Checkout Procedure1. Turn on power to the ignition systems and turn gassupply off.2. Check ignition module as follows:a.

27SERVICINGPROCEDURESTube Cleaning Procedure(Typical)Establish a regular inspection schedule, the frequencydepending on the local water condition and

28Main Burner and OrificeRemoval1. Remove screws and burner hold down bracket.NOTE: If the heat exchanger is sooted badly, theburner hold-down bracket

29Combustion Chamber RemovalTo remove the combustion chamber you must firsthave removed the heat exchanger. Unbolt metal com-bustion chamber retainer

CONTENTS3WATER CHEMISTRY 2WARNINGS 4Pay Attention to These Terms 4RECEIVING EQUIPMENT 5GENERALSPECIFICATIONS 5INSTALLATION 5Code Requirements 5Base In

304. Take garden hose and wash heat exchanger, mak-ing sure soot is removed from between fins. (Avoidexcessive water against refractory).5. Reassemble

31Winterizing Your HeaterWhen heaters installed outdoors in freezing climateareas are to be shut down for the winter, pleaseobserve the following step

32IMPORTANT NOTICEThese instructions are primarily intended for the use of qualified personnel specifically trained and experiencedin the installation

33Outer jacket very hot(paint blistered)*Broken refractory caused byshipping damage or impropercombustion…………………………..Excessive sooting of heatexchange

34NOTE: Before troubleshooting, familiarize yourself with the start-up and checkoutprocedure.Check line voltage power, low voltage transformer, limit

35RAYTHERM COMMERCIAL SWIMMING POOL HEATERSLIMITED WARRANTYRAYTHERM TYPE PSIZES 0926-4001SCOPE:Raypak, Inc. ("Raypak") warrants to the origi

36www.raypak.com Raypak, Inc., 2151 Eastman Avenue, Oxnard, CA 93030 (805) 278-5300 Fax (805) 278-5468Litho in U.S.A.

4DANGER:Indicates the presence of immediate hazards which will cause severe person-al injury, death or substantial property damage if ignored.WARNING:

5RECEIVING EQUIPMENTOn receipt of the equipment, visually check for exter-nal damage to the carton or the shipping crate. If thecarton or shipping cra

6ClearancesAll HeatersFor clearances from combustible surfaces, see TableA below. We require a minimal vertical clearance ofthree feet between the upp

72. Free ventilation air 1 sq. in. per 1000 BTU inputwithin 12" of the ceiling level.Venting ConnectionsDrafthood (Indoor) Models 962-1826Locate

8At the time of removal of an existing heater, the follow-ing steps shall be followed with each applianceremaining connected to the common venting sys

9MANOMETERGAS PRESSURETEST AT GASVALVEGAS PRESSURE TESTAT HEATERMANUALSHUTOFFVALVEGAS PRESSURETEST UPSTREAMModelNo.1” 1-1/4” 1-1/2” 2” 2-1/2” 3” 4”N P