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Related Manuals for Laars Mighty Therm AP
Summary of Contents for Laars Mighty Therm AP
- Page 2 LAARS Heating Systems Page 2 Table of Contents Section 1 Section 3 General Information Operation Introduction ............3 Controls - General ........10 Heater Identifi cation ........3 Initial Start-Up ..........11 Primary/Secondary Pump and Piping .... 3 Safety Shutoff Component Checkout ..12 Certifi...
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Page 3: Introduction
Canada CSA 3.3. Any modifi cation of the heater, its gas controls, gas orifi ces, wiring or drafter diverter 1.1 Introduction may void the Laars warranty. If fi eld conditions require This manual provides information for the installation such modifi cations, consult the factory. -
Page 4: Heater Placement
LAARS Heating Systems Page 4 Section 2 Clearance Indoor Outdoor from Installation unobstructed 2.1 Heater Placement Water Conn. side The pool heater must be placed to provide specifi c Pump side clearances on all sides for maintenance and inspections. There must also be minimum distances maintained from... -
Page 5: Venting
This could cause fl ue products to accumulate in the boiler room. Additional air must be supplied to Laars heaters have built-in draft diverters for natural draft compensate for such exhaust. The information in Table operation and must not be connected to any portion of a mechanical draft system under positive pressure. -
Page 6: Common Venting System Test Procedure
Appendix G in the National When the installation of a draft fan is necessary Fuel Gas Code, ANSI Z223.1 and/or CSA B149 in connecting a venting system to a Laars heater, Installation Codes. the installation should be engineered by competent personnel following good engineering practices. -
Page 7: Installation Of Outdoor Heaters
Verify that the heater is fi tted for the proper type of gas test pressures equal to or less than 1/2 psig (3.5kPa). by checking the rating plate. Laars heaters are normally... -
Page 8: Electrical Wiring
LAARS Heating Systems Page 8 Before operating the heater, the complete gas supply Distance from Gas Meter system and all connections must be tested for leaks using Heater or Last Stage Regulator a soap solution. Do not use raw fl ame. -
Page 9: General Piping Instructions
Mighty Therm Commercial Pool Heating Boiler Page 9 The pressure relief valve lever must be tripped at least once a year to ensure that waterways are clean. When manually operating lever, water will discharge through the drain line. Precautions must be taken to avoid contact with hot water and water damage. -
Page 10: Automatic Chlorinators
LAARS Heating Systems Page 10 after the pump shuts off will not siphon chlorine solution into the heater. When the operation of a chlorinator is such that it must be installed in the pump suction, or some other place where the chlorine solution fl... -
Page 11: Initial Start-Up
Mighty Therm Commercial Pool Heating Boiler Page 11 Rating Plate Flow Pressure Switch Relief Ignition Control Valve Water Circulating Pump Power Manual (On/Off/Auto) Pilot Switch Valve Pump Time Delay Relay Manual Main Terminal Strip Gas Valve Safety Operating Controls Valve Operating/Safety Hi-Limit Gas Valve... -
Page 12: Safety Shutoff Component Checkout
LAARS Heating Systems Page 12 and the chemical balance of the water has been adjusted to a stable pH of 7.2 to 7.8. After the pool water is Pilot Valve fi ltered, and the pH is verifi ed at 7.2 to 7.8, verify that the chlorine or bromine residual is no more than 2.0 to 4.0... -
Page 13: Inlet Temperature And Temperature Rise Adjustment
Mighty Therm Commercial Pool Heating Boiler Page 13 Manual Hi-Limit Checkout. The manual high limit When the inlet temperature is stabilized at 110°F capillary bulb is installed at the heater outlet. (This (43°C), either lock the valve handles, remove them, is not the auto reset high limit installed in the pool or prom i nent ly mark them to prevent tampering or return line). -
Page 14: Winter Operation Complete Shutdown
Spas are excellent for relaxation, body-conditioning may freeze and be damaged. and for arthritic and rheumatic problems, but Improper Use of Heater: The Laars Pool Heating can be hazardous. The Consumer Product Safety Boiler is not designed for continuous use as an Commission has recommended the following "anti-freezing"... -
Page 15: Section 4 Maintenance
fl ame pattern. If fl ame has the appearance of "sooting" tips, check for debris near orifi ces and Caution call the Laars Service Department. Black carbon or green soot on a dirty heat Inspect the venting system for obstruction, leakage exchanger can, under certain conditions, be and corrosion at least once each year. -
Page 16: Section 5 Troubleshooting
LAARS Heating Systems Page 16 Section 5 The general recommendations include keeping the water chemistry stable within the following Troubleshooting guidelines: 7.2 to 7.8 For proper service and problem diagnosis of the heater Free Available and heater system, the following tools are required: Chlorine: 2.0 - 4.0 ppm... - Page 17 Mighty Therm Commercial Pool Heating Boiler Page 17 1. Symptom: heater is pounding, knocking or emitting steam from relief valve Possible Cause What to Do Low or no water fl ow Is the heater wired into the fi lter pump circuit so that the heater cannot fi re (most likely).
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Page 18: Section 6 Parts Description And Order Numbers
LAARS Heating Systems Page 18 Section 6 Parts Description and Order Numbers... - Page 19 Mighty Therm Commercial Pool Heating Boiler Page 19 ONE PIECE PUMP VOLUTE Figure 17. Parts Identifi cation.
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- Page 24 LAARS Heating Systems Page 24 When ordering tiles: Assembly number is for all tiles. Part numbers shown for the front of unit are the same for the rear tiles. Check dimensions of old tile as shown here to confirm part number.
- Page 25 Mighty Therm Commercial Pool Heating Boiler Page 25 Figure 19 - Outdoor Parts...
- Page 26 LAARS Heating Systems Page 26...
- Page 27 Mighty Therm Commercial Pool Heating Boiler Page 27...
- Page 28 (Customer Service, Service Advisors) 800.900.9276 • Fax 800.559.1583 20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130 www.Laars.com Litho in U.S.A. © Laars Heating Systems 0806 Document 3006U...