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Raypak RAYTHERM P-1826 - page 1
INST ALLA TION & OPERA TING INSTR UCTIONS CA T ALOG NO. 6200.51P Effective: 05-24-10 Replaces: 04-09-07 P/N 240251 Rev . 17 WARNING: If these instructions are not followed exactly , a fire or explosion may result causing property damage, personal injury or death. FOR Y OUR SAFETY : Do not store or use gasoline or other flammable vapors and liqu ...
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Raypak RAYTHERM P-1826 - page 2
2 W A TER CHEMISTR Y (Corrosive water voids all warranties) For your health and the protection of your pool equipment, it is essential that your water be chemically balanced. The following levels must be used as a guide for bal- anced water . Recommended Level(s) Fiberglass Pools Fiberglass Spas Other Pool & Spa T ypes W ater T emp. (Deg. F) 68 ...
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Raypak RAYTHERM P-1826 - page 3
CONTENTS 3 WA TER CHEMISTR Y 2 WARNINGS 4 Pay Attention to These T erms 4 RECEIVING EQUIPMENT 5 GENERAL SPECIFICA TIONS 5 INST ALLA TION 5 Code Requirements 5 Base Installation 5 Clearances 6 Combustion Air (Indoor Units Only) 6 V enting Connections 7 Gas Supply Connections 8 W ater Connections 10 CONTROLS 10 Flow Switch 10 W ater Pressure Switch 1 ...
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Raypak RAYTHERM P-1826 - page 4
4 D ANGER: I ndicates the presence of immediate hazards which will cause severe person- al injury , death or substantial property damage if ignored. WARNING: Indicates the presence of hazards or unsafe practices which could cause severe personal injury , death or substantial property damage if ignored. CA UTION: Indicates the presence of hazards or ...
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Raypak RAYTHERM P-1826 - page 5
5 RECEIVING EQUIPMENT On receipt of the equipment, visually check for exter- nal damage to the carton or the shipping crate. If the carton or shipping crate is damaged, make a note on the Bill of Lading and report the damage to the Carrier immediately . Remove the heater from the carton or shipping crate. Do NOT use the shipping base crate as an in ...
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Raypak RAYTHERM P-1826 - page 6
6 Clearances All Heaters F or clearances from combustible surfaces, see T able A below . We require a minimal vertical clearance of three feet between the upper surface of the flue outlet to a noncombustible material. For servicing, provide at least 24" in front of the heater on Models 926-1826 & 48" in front of the heater on Models 2 ...
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Raypak RAYTHERM P-1826 - page 7
7 2 . Free ventilation air 1 sq. in. per 1000 BTU input within 12" of the ceiling level . V enting Connections Drafthood (Indoor) Models 962-1826 Locate and assemble as shown in Fig. 3. Secure with screws supplied in envelope in carton. Models 2100-4001 have built-in drafthoods that must be properly vented to the outside. V ent Piping V ent pi ...
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Raypak RAYTHERM P-1826 - page 8
8 At the time of removal of an existing heater , the follow- ing steps shall be followed with each appliance remaining connected to the common venting system placed in operation, while the other appliances remain- ing connected to the common venting system are not in operation. (a) Seal any unused openings in the common venting system. (b) Visually ...
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Raypak RAYTHERM P-1826 - page 9
9 MANOMETER GAS PRESSURE TEST AT GAS V AL VE GAS PRESSURE TEST A T HEA TER MANUAL SHUTOFF V AL VE GAS PRESSURE TEST UPSTREAM Model No. 1” 1-1/4” 1-1/2” 2” 2-1/2” 3” 4” N P N P N P N P N P N P N P 926/962 15 20 45 45 1 10 150 360 400 1083/1 125 10 15 35 35 80 120 300 300 1 178/1223 25 25 60 85 220 200 1287/1336 25 20 55 75 180 170 325 ...
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Raypak RAYTHERM P-1826 - page 10
the time clock may be used for this purpose with instructions not to override this sequence manually . See wiring diagram section for electrical hookup loca- tion of the fireman switch in the electrical circuit. CONTR OLS Flow Switc h This dual purpose control shuts off the boiler in the case of a pump failure or low water condition. It is mounted ...
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Raypak RAYTHERM P-1826 - page 11
11 Wa ter Pressur e Switch On Models 926-1223 built with a Unitherm Governor (UG), a water pressure switch is provided in the heater to shut down the gas valves in the event the water sup- ply to the heater is interrupted. It is very important to v erify that the switch electrically opens and shuts off the gas valve when water flow to the heater is ...
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Raypak RAYTHERM P-1826 - page 12
12 Raypak recommends the installation of an air bleed vent at a suitable location (usually the highest point in the plumbing) to remove air from the piping system. These units should be available at your local whole- sale supplier . Raypak does not provide this item. Models 1287 through 4001 are equipped with an external pump and bypass arrangement ...
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Raypak RAYTHERM P-1826 - page 13
13 2. Lace metal strapping or clamps, (NOT PROVID- ED) through the ¾” slots on the cover and fasten securely to pipe as shown in Fig. 15 & 16. Do not over-tighten clamps. Fig. 13: Poolstat Control Fig. 14: Control Cover Fig. 15: Hose Clamp Slots Fig. 16: Insert Clamps 3. Remove either the left or right “knock-out” for wiring on the pools ...
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Raypak RAYTHERM P-1826 - page 14
14 T o adjust the temperature: 1. Both isolation valves must be fully open. 2. Adjust Bypass V alve "A" 1/2 open and Balancing V alve "B" fully open. (See piping configuration page 15, 16 & 17) 3. Fire your Raypak pool heater and adjust Bypass V alve "A" to obtain a heater inlet temperature approximately 105°F . T ...
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Raypak RAYTHERM P-1826 - page 15
15 6. As the pool temperature rises to the desired tem- perature as controlled by the Pool aquastat, small adjustments to valves "A" and "B" will be required for optimum performance. Heater temperatures should be checked regularly to prevent heater condensation. The heater inlet temperature can be higher than 105°F without heat ...
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Raypak RAYTHERM P-1826 - page 16
16 BLENDED WATER TEM PERATURE (THERMOMET ER AT H EAT ER I NLET) HEATER O UTLET TEMPERATURE THERMOMETER HEAT ER THERMOSTAT RECOMME NDED FIE LD INSTA L LED I SOLA TION VALVES FOR SERVICE T I T o T c Piping Configurations for Rayther m Commer cial Pool Hea ter s ...
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Raypak RAYTHERM P-1826 - page 17
17 BLENDED WATER TEM PERATURE (THERMOMET ER AT H EAT ER I NLET) HEATER O UTLET TEMPERATURE THERMOMETER HEAT ER THERMOSTAT RECOMME NDED FIE LD INSTA L LED I SOLA TION VALVES FOR SERVICE T I T o T c Models 2100 thru 4001 Piping Configurations for Rayther m Commer cial Pool Hea ter s ...
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Raypak RAYTHERM P-1826 - page 18
18 Exter nal Auxiliar y Bypass V alve (Wher e Required) 926-1223 Models Only A n auxiliary bypass valve should be used when flow rates exceed 120 gpm (usually a high performance pump size larger than two HP will exceed this flow rate). This valve is required to complement the func- tion of the automatic bypass valve, particularly when starting the ...
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Raypak RAYTHERM P-1826 - page 19
19 Low W ater Cutoff Automatically shuts down burner whenever water level drops below probe. A 3 to 5 second time delay prevents premature lockout due to temporary condi- t ions such as power failure or air pockets. Standard on Cal Code heaters. High & Low Gas Pressure Switches Pressure switches sense either high or low gas pres- sure and autom ...
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Raypak RAYTHERM P-1826 - page 20
20 W iring Dia g r am—Models 926–1223 ...
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Raypak RAYTHERM P-1826 - page 21
21 W iring Dia g r am—Models 1287–1826 ...
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Raypak RAYTHERM P-1826 - page 22
22 W iring Dia g r am—Models 2100–2500 ...
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Raypak RAYTHERM P-1826 - page 23
23 W iring Dia g r am—Models 3001–4001 ...
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Raypak RAYTHERM P-1826 - page 24
24 SER VICING General Location Of Contr ols Models 926-1826 Models 2100-4001 T emperature Contr ol The pool water temperature is controlled by the pool t hermostat. The heater water temperature high limit is controlled by the manual reset high limit. Pressur e Switch The pressure switch, or heater actuator on Models 92 6 - 1 2 23 e q u i p p ed w i ...
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Raypak RAYTHERM P-1826 - page 25
25 Tw o-Speed Pumps In some cases, the flow on the low speed is insufficient to operate the heater . This is apparent when the pres- sure switch cannot be further adjusted or if the heater makes banging noises. In these cases, the pump must be run at high speed when heating the water . Pilot Safety The heater employs a pilot safety which closes the ...
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Raypak RAYTHERM P-1826 - page 26
26 After Star t-Up Pilot System Check out Pr ocedur e 1 . T urn on power to the ignition systems and turn gas supply off. 2. Check ignition module as follows: a. Set the thermostat above pool water tempera- ture to turn heater on. b. W atch for continuous spark at the pilot burner . c. T ime the spark operation. T ime must be with- in t h e l o c k ...
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Raypak RAYTHERM P-1826 - page 27
27 SER VICING PR OCEDURES T ube Cleaning Pr ocedur e (Typical) Establish a regular inspection schedule, the frequency depending on the local water condition and severity of service. Do not let the tubes clog up solidly . Clean out deposits over 1/16" in thickness. Although the illustration shows the mechanical clean- ing procedure of a small h ...
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Raypak RAYTHERM P-1826 - page 28
28 Main Bur ner and Orifice R emo val 1 . Remove screws and burner hold down bracket. NOTE: If the heat exchanger is sooted badly , the b urner hold-down bracket and spacer can become distorted from direct flame impingement and this usually necessitates replacement of these parts. 2. Lift burners from slotted spacer and slide from ori- fices. Clean ...
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Raypak RAYTHERM P-1826 - page 29
29 Combustion Chamber R emo val T o remove the combustion chamber you must first have removed the heat exchanger . Unbolt metal com- bustion chamber retainer from top and remove combustion chamber panels individually . Control Well R eplacement Remove top, sensing bulb and clip. Collapse well tube at the open end and with a chisel, push through int ...
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Raypak RAYTHERM P-1826 - page 30
30 4. T ake garden hose and wash heat exchanger , mak- ing sure soot is removed from between fins. (Avoid excessive water against refractory). 5. Reassemble; when heater is fired, some steam will form from wet refractory . This is normal. Unither m Go ver nor R eplacement 1. Shut off water , gas and ele ctricity , close valves, relieve pressure. 2. ...
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Raypak RAYTHERM P-1826 - page 31
31 W interizing Y our Heater When heaters installed outdoors in freezing climate areas are to be shut down for the winter , please observe the following step-by-step procedure: 1. Remove the drain plug or open the drain cock located on the inlet-outlet header . On larger heaters with external Unitherm Governor(s) and piping, locate plug at low poin ...
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Raypak RAYTHERM P-1826 - page 32
32 IMPORTANT NOTICE These instructions are primarily intended for the use of qualified personnel specifically trained and experienced in the installation of this type of heating equipment and related system components. Installation and service personnel may be required by some states to be licensed. Persons not qualified shall not attempt to instal ...
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Raypak RAYTHERM P-1826 - page 33
33 Outer jacket very hot ( paint blistered) * Broken refractory caused by shipping damage or i mproper combustion………………………….. E xcessive sooting of heat exchanger…………………………... C alcu la te tem perature in ° F/hr……... Filter not r unning long e nough…….... Dirty filter…………………………… ...
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Raypak RAYTHERM P-1826 - page 34
34 NOTE: Before trou ble shooting, f amilia rize y ours elf wi th the s tar t-up and c heckout procedure. Check line voltage p owe r, low v olt age t ransformer, li mit c ontrolle r, t hermostat (controller) and wiring. Pull ignition lead and c heck spark at module. Spark Okay? YES • Check ignition ca ble, g round wi ring, c eramic in sulator and ...
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Raypak RAYTHERM P-1826 - page 35
35 RA YTHERM COMMERCIAL SWIMMING POOL HEA TERS LIMITED WARRANTY RA YTHERM TYPE P SIZES 0926-4001 SCOPE: Raypak, Inc. ("Raypak") warrants to the original owner that all parts of this boiler which are actually manufactured by Raypak will b e free from failure under normal use and service for the specified warranty periods and subject to the ...
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Raypak RAYTHERM P-1826 - page 36
36 w w w.ray pa k .co m Raypak, Inc., 2151 Eastman A venue, Oxnard, CA 93030 (805) 278-5300 Fax (805) 278-5468 Litho in U.S.A. ...
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