Raypak 750 - Manuals

8 CLEARANCES TABLE 1MINIMUM CLEARANCES FROM COMBUSTIBLE SURFACES(INDOOR ALCOVE INSTALLATIONS) Boiler Size Boiler Side 500 750 1000 Floor See Note 1. Rear 1” 1" 1" Right 12” (Water side) 12" (Water side) 12" (Water side) Left 1” 1” 1” Top 0” 0” 0” Vent 1” 1” 1” Note 1. Do not install ...

SECTION C: COMBUSTION AND VENTILATION AIR COMBUSTION AND VENTILATION AIR (Indoor Units) The boiler must be supplied with sufficient quantities of non-contaminated air to support proper combustion and equip-ment ventilation. Combustion air can be supplied via conventional venting, where combustion ai...

Method 2 (normally applied in cold climate regions): 1. The mechanical equipment room must be provided with at least one permanent opening, commencing within12 inches of the top of the enclosure. 2. The opening must communicate directly or by ducts with outdoors.3. The opening must have a minimum fr...

13 SECTION E: HYDRONIC HEATING PIPING PUMP SELECTION In order to insure proper performance of your boiler system, you must install a properly sized pump. Raypak recommendsusing a 20°F Delta T as design Delta T. ( Delta T is the temperature difference between the inlet and outlet water when the boile...

Figure E-2aSINGLE BOILER - PRIMARY/SECONDARY PIPING 14 PRESSURE DROP IN FEET OF HEADFEEDWATER REGULATOR Raypak recommends that a feedwater regulator be installed and set at 12 PSIG minimum pressure at the highest point ofsystem. Install a check valve or back flow device upstream of the regulator, wi...

SECTION F: DOMESTIC HOT WATER PIPING When designing the water piping system for domestic water applications, water hardness should be considered. Table D-1 indicates the suggested flow rates for soft, medium and hard water. Hardness is specified as grains per gallon. TABLE F-1 DOMESTIC WATER HEATING...

19 SECTION G: POOL HEATING CAUTION: Power to the heater should be interlocked with the main system pump to make sure the heater does not firewithout the main system pump in operation. Improper flow control can damage the heater. Uncontrolledflow (too high) or restricted flow (too low) can seriously ...

SPA WATER CHEMISTRY NOTE: Chemical imbalance can cause severe damage to your heater and associated equipment. Maintain your water pH between 7.4 and 7.8 and total alkalinity between 100 and 150 p.p.m. If the mineral content and dissolved solids in thewater become too high, scale forms inside the hea...

22 SECTION H: GAS SUPPLY CONNECTIONS DANGER: Make sure the gas on which the boiler will operate is the same type as specified on the boilermodel and rating plate. Gas piping must have a sediment trap ahead of the boiler gas controls, and a manual shut-off valve located outside theheater jacket. A po...

23 GAS PRESSURE REGULATOR The gas pressure regulator is nominally preset to the outlet values shown in the table below, within +. 1" W.C. If anadjustment is needed, turn the adjustment screw clockwise to increase pressure or counterclockwise to lower pressure. REGULATOR PRESSURE SETTINGS: See Ta...

24 SECTION I: ELECTRICAL POWER CONNECTIONS Installations must follow these codes: · National Electrical Code and any other national, state, provincial or local codes or regulations havingjurisdiction. · Safety wiring must be N.E.C. Class 1. · Boiler must be electrically grounded as required by N.E.C...

27 SECTION J: VENTING CONNECTIONS GENERAL CAUTION: Proper installation of flue exhaust venting is critical for the safe and efficient operation of the boiler.For vent systems not shown in this section please contact your local authorized representative. Definition of Appliance Categories Boilers are...

29 Support of Vent Stack The weight of the vent stack or chimney must not rest on the boiler vent connection. Support must be provided in compliancewith applicable codes. The vent should also be supported to maintain proper clearances from combustible materials. Use insulated vent pipe spacers where...

31 SECTION J-1 Natural Draft Vertical Venting Without Add-on Condensing Heat Exchanger (Category I) Figure J-1NATURAL DRAFT VERTICAL VENT WITHOUT ADD-ON CONDENSING HEAT EXCHANGER* NOTE: *Rear venting is recommended to minimize interference with water piping **Vent lengths are based on a lateral leng...

Common venting systems may be too large when an existing unit is removed. At the time of removal of an existing appliance,the following steps must be followed with each appliance remaining connected to the common venting system placed inoperation, while the other appliances remaining connected to th...

SECTION J-5 Vertical Venting With Add-On Condensing Heat Exchanger(Category IV ) Domestic Water Figure J-5VERTICAL VENT (CATEGORY IV) WITH ADD-ONCONDENSING HEAT EXCHANGER *Contact Manufacturer for Details 40

SECTION J-7 Horizontal Thru-Wall Direct Venting/Combustion Air With Add-On Condensing Heat Exchanger (Category IV) F i g u r e J - 7HORIZONTAL THRU-WALL DIRECT VENTING WITH ADD-ONCONDENSING HEAT EXCHANGER 44 *Contact Manufacturer for details.

• Horizontal Thru-wall Direct Venting System With Add-on Condensing Heat Exchanger(Category IV) Installation These installations utilize the boiler mounted blower to draw combustion air from outdoors and vent combustion prod-ucts to the outdoors. UL 17-38 Certified Venting Material (e.g. AL29-4C) MU...

SECTION J-8 Vertical Direct Venting/Combustion Air With Add-on Condensing Heat Exchanger (Category IV) F i g u r e J - 8VERTICAL DIRECT VENTING WITH ADD-ONSECONDARY CONDENSING HEAT EXCHANGER 46 *Contact manufacturer for details

Outdoor Installation with Add-On Condensing Heat Exchanger Outdoor models are self -venting when installed with the factory-supplied non-restricted direct vent cap and require noadditional vent piping. This special vent cap is provided with the boiler in accordance with AGA/CGA requirements. Itmust ...

49 SECTION K CONDENSATE DRAIN WARNING: All condensation should be disposed of according to local, county, state, and federal laws. Refer toNFGC, section 7.9, for additional information. The Condensing Heat Exchanger (CHX) can generate up to 1 (one) gallon per hour (GPH) of condensate for every 100,0...

50 SECTION L CONTROLS WARNING: Installation, adjustment and service of boiler controls including timing of various operating functions must be performed by a qualified installer, service agency or the gas supplier. Failure todo so may result in control damage, boiler malfunction, property damage, pe...

SECTION M: GENERAL SAFETY PRECAUTIONS To meet commercial water use needs, an external operating control for this hot water boiler is adjustable up to 210°F. However,water temperatures over 125°F can cause instant severe burns or death from scalds. The preferred starting point for settingthe control ...

SECTION O: ADB INITIAL START-UP 1.0 TOOLS NEEDED • One 8-0-8 , 16” scale manometer (or larger) • Three 4-0-4, 8” scale manometers (or larger) • “T” fitting • 7/16” and 1/2" open end wrenches • Small and large flat-head screwdrivers • Volt meter • Amp probe • Elec. Dual reading thermometer with s...

2.4 Check the Gas Supply Pressure, Location (1) • Leave pilot gas valve and main gas shut-off valve closed; • Slowly turn on main gas shut-off valve; • Read the gas supply pressure from the manometer; • If pressure is > 14" W.C.; Turn off the valve; • Check if the service regulator is install...

SECTION Q: OPERATION OPERATING INSTRUCTIONS Lighting Instructions 1. STOP! Read the safety information first. 2. Set the thermostat to the lowest setting.3. Turn off all electric power to the appliance. 4. This appliance is equipped with an ignition device which automatically lights the burner. Do N...

SECTION R: MAINTENANCE SUGGESTED MINIMUM MAINTENANCE SCHEDULE: Regular service by a qualified service agency and maintenance must be performed to assure maximum boiler operatingefficiency. Maintenance as outlined below may be performed by the owner. Yearly (Beginning of each heating season): 1. Annu...

CLEANING BOILER HEATING SURFACES: The following service procedures must be performed ONLY by a qualified service agency. Boiler owner shouldnot attempt these procedures. 1. If you find soot in top of vent elbow (some sediment in bottom of vent is normal) - remove vent attachment to the ADBand clean ...

66 SECTION S: CONNECTING CONDENSING HEAT EXCHANGER (CHX) Refer to Figure S-1 for the following steps: 1. Remove the shroud2. Remove the top cover.3. Secure the 15° elbows (supplied) as shown one on each side of the CHX, using the stainless steel screws (sup plied). 4. Seal the connection with high t...

67 APPENDIX A INSIDE COMBUSTION AIR CONTAMINATION: All boilers experience some condensation during start-up. The condensate from flue gas is slightly acidic. In most cases the pH level is not harmful to vents or drains. Whencombustion air is contaminated by vapors from products in areas listed below...