Table of Contents
Advertisement
Installing, Operating & Maintaining
EVO 79–599 HIGH EFFICIENCY
WATER HEATERS AND HEATING BOILERS
WARNING
If the information in this manual
is not followed exactly, a fire or
explosion may result causing
property damage, personal
injury or death.
New York
MEA 425-05-E
These appliances MUST be installed by a properly licensed individual in the City and State which the unit is
being installed. All start up adjustments and subsequent service work must be done by a similarly licensed
contractor or a factory trained service individual. Failure to comply could result in loss of warranty and or
severe personal injury, death and or substantial property damage. These instructions are required to be
kept with the appliance on the left side, in the pocket provided.
34000 Autry Street, Livonia, MI 48150 | 800.968.5530 | Fax 734.419.0209 | www.hamiltonengineering.com | LIT91127US REV 5/2018
EVO 299–599
300,000 BTU/hr
399,000 BTU/hr
630,000 BTU/hr
ANSI Z21.13-2014/CSA 4.9-2014
UL 795-2011/CSA 3.4
SCAQMD 1146.2
Massachusetts
Boilers: G1-06-06-24A
Heaters: G1-06-06-24B
WARNING
Do not store or use gasoline or other
flammable vapors and liquids in the vicinity
of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS:
• Do not try to light any appliance
• Do not touch any electrical switch
• Do not use any phone in your building
Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier
instructions. If you can not reach your gas
supplier, call the fire department.
SCAQMD
Compliant Rule1146.2
EVO 79–199.1
80,000 BTU/hr
136,000 BTU/hr
180,000 BTU/hr
199,000 BTU/hr
CEC Listed
California Energy Commission
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Evo HW 79
Summary of Contents for Evo HW 79
- Page 1 Installing, Operating & Maintaining EVO 79–599 HIGH EFFICIENCY WATER HEATERS AND HEATING BOILERS EVO 79–199.1 EVO 299–599 80,000 BTU/hr 300,000 BTU/hr 136,000 BTU/hr 399,000 BTU/hr 180,000 BTU/hr 630,000 BTU/hr 199,000 BTU/hr Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
- Page 2 USING THIS MANUAL USING THIS MANUAL DANGER Indicates a condition or hazard which Throughout this manual you will see these special attention boxes similar to this one, MAY cause severe personal injury, which are intended to supplement the death, or major property damage. instructions and make special notice of potential hazards.
-
Page 3: Table Of Contents
12-13 Servicing the EVO Part 3 ..... . 14-19 Placing EVO into Normal Operation Soft Lockout Codes GAS CONNECTION Hard Lockout Codes... -
Page 4: Part 1
PART 1. GENERAL INFORMATION A. HOW IT OPERATES The EVO product line is an extremely high efficiency water heating product, requiring special venting and condensate removal precautions. All high efficiency condensing appliances will require more maintenance (cleaning) than their non-condensing counterparts. Failure to do so may result in damage to the appliance that is not covered under warranty. - Page 5 10k thermistor for either water heater or boiler any time one is connected. Connection is automatically detected and control shifted to the remote sensor from the internal sensor by the EVO Controller when a 10k sensor is connected to the appropriate terminals.
-
Page 6: Bevo Controls
It is recommended to use an external sensor located in the storage tank for control in DHW applications. If an external temperature sensor is not used, the EVO will be controlled by its own inlet (Return) sensor and the water heater pump must run constantly. - Page 7 Below 1 volt, there will be considered no heat demand. Note: If another type of heat demand device is connected to the EVO, such as a room thermostat (or the jumper wire factory shipped in place), the controller will revert to that as it’s control point when the voltage is less than 1.
- Page 8 See LIT91110 - FMT-914 Control Configurations for suggested piping diagrams and details. The EVO control system offers the ability to automatically provide DHW from a stand alone or group of Cascaded Heating Boilers. To do this properly, a 10k ohm thermistor or aquastat, which senses the DHW tank water temperature, must be connected to the appropriate terminals on the EVO.
-
Page 9: Cevo Dimensions
Condensate Trap Cleaning Point Inlet (B) Gas (D) Condensate Trap Cleaning Point Condensate Waste Condensate Waste Condensate Waste Condensate Waste Inlet (B) Gas (D) (TABLE 1-1) EVO DIMENSIONS Model Width Heightt Depth 79–199.1 16" 20.5" 12" 3" 1" 1" 0.75"... -
Page 10: D Pre-Installation Requirements
(see Figure 1-4 on the next page). If the EVO is set up for liquefied petroleum (LP) gas, some geographic areas follow the Uniform Mechanical Code, section 304.6, “Liquefied petroleum gas burning appliances shall not be installed in a pit, basement or similar location where heavier-than-air gas might collect. -
Page 11: E Pressure Relief Valve
Service Switch (FIGURE 1-4) HOW TO REMOVE THE FRONT COVER The EVO is certified as an indoor appliance. Do not install the EVO outdoors or location where it will be exposed to freezing temperatures. This includes all related piping and components. If the EVO is subjected to flood water or submersed in water, the EVO must be replaced. -
Page 12: Part 2
A. ELECTRICAL CONNECTION / REQUIREMENTS The electrical connection for the EVO is on the bottom of the unit. There is a 1/2" knockout location for an electrical connection for the heater’s incoming power connection. All electrical wiring must be performed by a qualified licensed electrician in accordance with National Electrical Code ANSI/NFPA and/or the Canadian Electrical Code, Part 1 CSA C22.1, or to any applicable local... - Page 13 (FIGURE 2-1) FIELD WIRING CONNECTIONS A. Outdoor Sensor - outdoor air sensor, set point will adjust based on outdoor air temperature (not needed if 0-10 VDC output is connected) B. External sensor connection - system temperature sensor, senses water temp in a storage tank or a heating loop.
-
Page 14: Part 3
EVO from the gas line. In order to do this, you must shut the gas off using factory and field-installed gas cocks (following the lighting instructions in Part 6, Section B, Page 38.) This will prevent high pressure from reaching the valve. -
Page 15: C Gas Tables
(DO NOT TOUCH LEFT HAND GAS VALVE!) (FIGURE 3-2) EVO MODELS 79–399 (FIGURE 3-3) EVO MODEL 599 Models 119–399 Model 599 34000 Autry Street, Livonia, MI 48150 | 800.968.5530 | Fax 734.419.0209 | www.hamiltonengineering.com | LIT91127US REV 5/2018... - Page 16 How and where to measure: • All gas pressure tests must be taken at the gas manifold inlet, external to the EVO (see diagram). • Gas pressure for minimum load should be measured the moment after the gas valve opens on a single EVO, and recorded.
-
Page 17: E Setting Maximum Load
GAS CONNECTION (TABLE 3-3) COMBUSTION & FUEL RELATED ADJUSTMENT TABLE Natural Gas CO Natural Gas CO ppm LP Gas CO LP Gas CO ppm Approximate, do not use for setup! Approximate, do not use for setup! Cover On Cover Off Cover On Cover Off LOW FIRE... -
Page 18: F Setting Minimum Load
GAS CONNECTION Last 4 digits of serial number HWD 129, HWH 129, HWH 129.8 First Week Last Week Maximum rpm Minimum rpm 49-06 07-14 5900 1947 52-14 current 6000 1740 Last 7 digits of serial number HWD 179, HWH 179, HWH 179.8 First Week Last Week Maximum rpm^... -
Page 19: G Gas Conversion
If the appliance is to be converted in the field for using Propane (LPG), the following steps must be taken: • Turn screw [1] clockwise (Figure 3-2, page 15) ¾ of a full turn (270°) on models HW 79/199.1, ¾ of one turn (270°) on models HW 199.1/299 and 1 full turn (360°) on model HW399 •... -
Page 20: Part 4
Note: For concrete construction or to meet certain fire codes, exhaust and inlet piping at the wall penetration to the EVO must be CPVC Schedule 40 or 80 or stainless. The balance from the penetrated wall to the outside may be PVC Schedule 40 or 80. -
Page 21: B Venting The Evo
VENTING B. VENTING THE EVO (TABLE 4-1) VENTING SPECIFICATIONS Vent Standard Vent Optional Vent Minimum Combined Maximum Combined Model Diameter Type Type Vent Length Length HW 79 3" Plastic Stainless 6' + (2) 90º elbows 250' HW 129 3" Plastic Stainless 6' + (2) 90º... - Page 22 B. VENTING THE EVO CONT. Exhaust piping should be sloped back to the connection on the EVO, at least 1/4” per foot to remove additional condensate that forms within the pipe. The total combined length of pipe (intake piping plus exhaust piping added together) including elbow allowances intake and exhaust should not exceed the length shown in the vent table.
- Page 23 VENTING B. VENTING THE EVO CONT. *IMPORTANT NOTE HAMILTON ENGINEERING, INC. RECOMMENDS MINIMUM CLEARANCE OF 4 FEET WHERE THE EXHAUST PLUME CAUSED BY THE UNIT MAY OBSTRUCT VIEWS OR AFFECT THE COSMETIC LOOK OF THE BUILDING. IN CANADA, THERE IS A MINIMUM CLEARANCE OF 10 FEET.
- Page 24 B. VENTING THE EVO CONT. (FIGURE 4-2) SIDEWALL VENT WITH DOWN ELBOW (INTAKE) & UP ELBOW (EXHAUST) VENTING MULTIPLE UNITS, with vents all on same horizontal plane, spaced at least PLEASE NOTE: Exhaust must not terminate 8 inches apart, and at level of beneath an overhang! highest unit.
- Page 25 VENTING B. VENTING THE EVO CONT. (FIGURE 4-4) VERTICAL VENT WITH PVC/CPVC 18" Minimum 24" Maximum Exhaust w/ Coupler & Bird Screen 24" or 12" above Min. 12" Above Air intake Maximum snow level Parapet wall if whichever is greater within 10' of wall 90º...
- Page 26 B. VENTING THE EVO CONT. DIAGRAMS FOR ROOM AIR VENTING TERMINATION If you’re using room air, your unit should be set up this way: (FIGURE 4-5) VERTICAL TERMINATION (FIGURE 4-6) SIDEWALL TERMINATION 24" or 12" above Maximum snow level whichever is greater Exhaust 90º...
-
Page 27: C Inlet Air Vent
1. Seal any unused openings in the common venting system. The EVO venting is NOT to be combined with this older venting system! 2. -
Page 28: F Condensate Requirements
PRODUCT DAMAGE MAY OCCUR. be necessary to prevent condensate line vacuum DRAIN TUBE lock if a long horizontal run is used. The EVO appliance has an automatic safety device that will ATMOSPHERIC GROMMET FOR CABINET shut it down in the event of a condensate drain GRAVITY DRAIN blockage. -
Page 29: Part 5
10 PSI water pressure, this assures that the EVO heat exchanger can be completely purged of air, failure to do so could cause damage. It is important to note that the EVO Boiler is flow dependent for proper efficiency and life expectancy;... -
Page 30: B Boiler Schematic Drawings
Hot Water Return Pump Cold Water Ball valve Two boiler schematic to Hamilton System Separator Fill Valve Condensate Drain LEGEND EVO Boiler Stand Mounted Flow direction Hot Water Supply Thermometer Expansion Tank Pressure Relief valve Hot Water Return Pump Condensate Neutralizer... -
Page 31: C Fill & Purge Heating System
D. REMOVING AIR FROM THE HEAT EXCHANGER The EVO 299–599 (it is not necessary on an EVO 79–199.1) has an automatic air vent on the top of the appli- ance and the air vent cap must be loosened to allow trapped air to escape when the appliance is initially filled and put into operation. -
Page 32: E Water Heating Piping
Minimum Manifold Pipe Size Pump Model GPM ∆P* Design ∆T Supplied Single Double Triple Quad HW 79 6.6 @ 19.9’ 23.5º F 13.1º C PMP 90305 1” 1.5” 1.5” 2” HW 129 6.6 @ 19.9’ 40.1º F 22.2º C PMP 90305 1”... -
Page 33: F Water Heater Schematic Drawings
PIPING F. WATER HEATING SCHEMATIC DRAWINGS One water heater schematic to single tank LEGEND LEGEND Hot Water Supply Thermometer Hot Water Return Pump From System Cold Water Ball valve To System Condensate Drain Check valve Water Heater with Stand Aquastat Storage Tank Flow direction Expansion Tank... - Page 34 PIPING F. WATER HEATING SCHEMATIC DRAWINGS CONT. One water heater schematic to single tank with mixing valve and CWIS ™ From System To System LEGEND Hot Water Supply Hot Water Return Cold Water Tempered Water Supply Tempered Water Return Condensate Drain Water Heater with Stand Make-up Storage Tank...
- Page 35 PIPING F. WATER HEATING SCHEMATIC DRAWINGS CONT. Three water heater schematic to single tank From System To System LEGEND Hot Water Supply Hot Water Return Cold Water Condensate Drain Water Heater with Stand Make-up Storage Tank Water Expansion Tank Condensate Neutralizer Thermometer Pump Ball valve...
- Page 36 PIPING F. WATER HEATING SCHEMATIC DRAWINGS CONT. Three water heater schematic to single tank with mixing valve and CWIS ™ LEGEND Hot Water Supply Ball valve Hot Water Return Check valve Cold Water Aquastat From System To System Tempered Water Supply Flow direction Tempered Water Return Pressure Relief valve...
- Page 37 PIPING F. WATER HEATING SCHEMATIC DRAWINGS CONT. Three water heater schematic to two tanks LEGEND Hot Water Supply Thermometer To System Hot Water Return Pump Cold Water Ball valve From System Condensate Drain Check valve Water Heater with Stand Aquastat Storage Tank Flow direction Expansion Tank...
-
Page 38: Part 6
It is recommended that you read the General Information Section (Part 1, Page 4-5) to get a better understanding of how the EVO operates before you start the unit and use LIT91111 (Start-Up Checklist) as a check and to document and confirm all conditions are correct. -
Page 39: C Operating Instructions
The EVO Heater shall be installed so the gas ignition system components are protected from water (dripping, spraying, rain, etc.) during appliance operation and service (circulator replacement, condensate trap, control replacement, etc.). -
Page 40: E Sequence Of Operation
Undo the two latches at the bottom of the cover (if applicable). Remove the cover. B. PLACING THE EVO INTO NORMAL OPERATION Replace the front cover in the normal position. Close the latches on the bottom of the cabinet (if applicable). -
Page 41: C Soft Lockout Codes
C. SOFT LOCKOUT CODES (TABLE 7-1) FMT 914 SOFT LOCKOUT CODES DISPLAY WILL AUTOMATICALLY DESCRIPTION CODE RESET WHEN: Low water cut off (if equipped) opened The water level is restored Outlet temperature too high Outlet temp decreases sufficiently Return temperature higher than setpoint The temp decreases sufficiently Indirect DHW temperature too high DHW temp decreases sufficiently... - Page 42 D. HARD LOCKOUT CODES IN MANY CASES, A “HARD LOCKOUT” WILL INDICATE THAT THERE IS SOMETHING WRONG WITH THE APPLIANCE, THAT SHOULD BE SERVICED OR REPAIRED. EXAMPLE: If there is a loss of flow due to an air bubble passing through the appliance (sensed via the water flow switch), the appliance will shut down and display a temporary fault (H1).
-
Page 43: E Fault Causes
E. FAULT CAUSES The numbers given in Tables 7-3 and 7-4 match with those in the following table to give the reason for the fault. (TABLE 7-5) FAULT CAUSES Room thermostat connected incorrectly or faulty Pump not running or partially clogged Water pressure in the system too low (heat exchanger/radiator air bound) Fan speed control wiring not connected (unplugged) Fan blades are fouled - check for lint or dirt build-up on blades... - Page 44 SERVICING (TABLE 7-5) FAULT CAUSES (CONTINUED) Venting system has too much resistance (possibly partially blocked) Pressure switch is defective Wiring to sensor is disconnected or incorrectly connected Insufficient flow through the boiler Heat exchanger is beginning to accumulate scale Heat exchanger back wall high limit is open Burner door high limit is open, reset high limit The numbers given in Tables 7-3 and 7-4 match with those in the following table to troubleshoot.
- Page 45 SERVICING (TABLE 7-6) TROUBLESHOOTING THE FAULT (CONTINUED) First check that the pump is circulating like it should, and that there are no obstacles between the appliance and the tank (or in any of the inlet/outlet piping). If the appliance is still making a ‘popping’...
-
Page 46: F To Turn Off Gas To Appliance
650 watts. All standard pumps as supplied by Hamilton Engineering draw 550 watts or less. The EVO control system has the ability to control up to three (3) pumps, or two (2) pumps and a diverting valve. For details see EVO Configurations Manual (LIT91110) or contact Hamilton Engineering at 800.968.5530. -
Page 47: Ievo Sensor Resistance Table
SERVICING I. EVO SENSOR RESISTANCE TABLE (TABLE 7-7) EVO SENSOR TEMPERATURE RESISTANCE TEMPERATURE RESISTANCE RESISTANCE TABLE (OHM) (OHM) 32550 32550 25340 25340 19870 19870 15700 15700 12490 12490 10000 10000 8059 8059 6535 6535 5330 5330 4372 4372 3605 3605... - Page 48 MAINTENANCE B. ANNUAL INSPECTION (See LIT91179 Maintenance Checklist for required tools and materials) An inspection should cover, at a minimum, the following areas: • Download and review operating hour data and fault history • Inspect all fittings, controls and connections for leaks, damage, or fouling •...
-
Page 49: B Annual Inspection
MAINTENANCE B. ANNUAL INSPECTION CONT. FLOW SWITCH: Check paddle for fouling and free movement by spring! • Dismantle the burner unit: remove the (6) 6mm nuts (with a 10mm socket), the ignition cable, the power and speed control plugs, and the ground wire from the fan, and remove the burner/fan unit from the heat exchanger and cabinet. - Page 50 MAINTENANCE B. ANNUAL INSPECTION CONT. • Check the fire side of the heat exchanger: only clean loose residue from the heat exchanger coil, use a vacuum cleaner and nylon brush, and do not push the residue between the openings of the coils if at all possible, as this may impede the flow of the products of combustion.
- Page 51 • Press the reset button from the home screen to access the sensor readings, and record each reading, Flow and Pressure Drop (GPM Feet of Head) making sure that all sensors and thermometers are reading the same, with the heat off. HW 79 - 129 (.8) HW 179 - 199.1 (.8) Design...
- Page 52 MAINTENANCE B. ANNUAL INSPECTION CONT. Try to keep the measuring hose flat with the inner wall of the pipe. Use a small opening to insure you are measuring static pressure and not velocity pressure P (1, 2, 3) A These will be negative pressures relative to atmosphere P (1, 2, 3) F These will be positive pressures relative to atmosphere Example...
-
Page 53: C Condensate Cleaning Instructions
The condensate trap and entire drain system attached to it (above the neutralizer) should be cleaned at least once every year. 1) Turn off the power to the EVO. 2) Place a bucket under the condensate trap. Use caution when removing the clean-out cap, as the trap is full of condensate and it may be hot. -
Page 54: D Combustion Chamber Coil Cleaning Instructions
(F3 and clear water). Repeat if necessary. 5) Be sure that water is flowing freely through the bottom casing of the heat exchanger and the drain is not plugged. At this point, the EVO should be ready to power back up. - Page 55 WATER SIDE CLEANING (de-scaling kit is required for this process, please consult factory) 1) Shut down the EVO and clean by using the following steps for heaters: a. Turn off the power, close the gas valve, and shut down the unit. Wait for the unit to be cool to the touch.
-
Page 56: Eevo Controls
Cascade indicator light, found in the lower right hand corner of the Temperature display. This dot will be flashing when this appliance is part of a properly-connected, commonly- controlled group of EVO products and reading temperature sensors. Display code, not flashing indicates a Soft Lockout When this display is flashing a code, the appliance is in a Hard Lockout and the reset must be pushed to re-start the appliance. -
Page 57: F Coil Scaling Prevention Feature
F. COIL ANTI-SCALING PREVENTION FEATURE The EVO controller (FMT 914) contains sophisticated software that enables it to monitor the rate of temperature rise through the heat exchanger. By doing this, it greatly reduces the possibility of heat exchanger failure due to scaling or fouling. -
Page 58: Gevo 79-199.1 Parts Breakdown
MAINTENANCE G. EVO HW 79-199.1 PARTS BREAKDOWN NO. ON DRAWING PART DESCRIPTION PART NUMBER Panel Front Door Assembly HW79-199.1 JKD 94100 Pilot Spark Electrode Assembly HW79-599 Knurled PLT 94318 Burner Air/Gas Mixer Inlet HW79-399 GAS 74802 Gasket for Electrode HW79-599... - Page 59 MAINTENANCE G. EVO HW 79-199.1 PARTS BREAKDOWN (CONTINUED) NO. ON DRAWING PART DESCRIPTION PART NUMBER Fork Clip HW79-199.1 Arms MSC 74020 Elbow 1/8"in x 1/8" out for HW79-199.1 High Limit MSC 74024 Bushing SS Hi Limit HW79-199.1 G1/8" MSC 74133 Hi Limit HW79-1999, 210˚F...
- Page 60 MAINTENANCE G. EVO HW 79-199.1 PARTS BREAKDOWN (CONTINUED) NO. ON DRAWING PART DESCRIPTION PART NUMBER Nipple Ftg BSPT Male x NPT Male 1/2" HW79-599 BRS 74100 Valve Gas HW79-599 VAL 74050 Tube Gas HW79-129 Outlet GAS 94002 Tube Gas HW179-199.1 Outlet GAS 94003 Cabinet HW79-199.1 - Sheet Metal Only...
-
Page 61: Hevo 299 -599 Parts Breakdown
MAINTENANCE H. EVO HW 299-599 PARTS BREAKDOWN HW 299/399 Assembly NO. ON DRAWING PART DESCRIPTION PART NUMBER Panel Front Door Assembly HW299-399 JKD 94101 Panel Front Door Assembly HW599 JKD 94102 Burner Air/Gas Mixer Inlet HW599 BNR 74500 Pilot Spark Electrode Assembly HW79-599 Knurled... - Page 62 MAINTENANCE H. EVO HW 299-599 PARTS BREAKDOWN (CONTINUED) NO. ON DRAWING PART DESCRIPTION PART NUMBER Electronics/Display Drawer Assembly, HW299-599 PAN 94101 Spacer Unthreaded, 4-40 ID x 1/4"OD x5/16" HWR 74206 Nylon 6-32 1/4x3/4 Female thread Hex Standoff Control Board HW79-1999...
- Page 63 MAINTENANCE H. EVO HW 299-599 PARTS BREAKDOWN (CONTINUED) NO. ON DRAWING PART DESCRIPTION PART NUMBER Valve Non-Return HW599 VAL 74098 Valve Non-Return HW299-399 VAL 74097 Panel Side HW299-399 Left Side JKS 94100 Panel Side HW299-399 Right Side JKS 94101 Panel Side HW599 Left Side...
- Page 64 MAINTENANCE H. EVO HW 299-599 PARTS BREAKDOWN (CONTINUED) NO. ON DRAWING PART DESCRIPTION PART NUMBER Tube Gas HW599 Outlet GAS 94092 B Switch P Condensate HW79-599 PRS 74326 A Gas Valve Mount Bracket Lower HW599 BKT 74501 Heat Ex. Hold Down Rods HW599 25.125" Long JKR 74710 Heat Ex.
-
Page 65: I Universal Wiring Diagram
Livonia, MI 48150 HAMILTON Customer: PH: (800) 968-5530 Description: ENGINEERING Fax: (734) 419-0209 Universal Wiring Diagram Dwg. HW 79 - 599 No.: Checked. 34000 Autry Street, Livonia, MI 48150 | 800.968.5530 | Fax 734.419.0209 | www.hamiltonengineering.com | LIT91127US REV 5/2018 Page 65... -
Page 66: Part 9
SPECIAL INSTALLATION REQUIREMENTS PART 9. SPECIAL INSTALLATION REQUIREMENTS A. INSTALLATION REQUIREMENTS - MASSACHUSETTS Requirements for installation – Commonwealth of Massachusetts For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied: 1. -
Page 67: B Installation At High Altitudes
PART 10. WARRANTY INFORMATION A. WARRANTY CONTACT INFORMATION Hamilton Engineering, Inc. warrants each EVO™ Water Heater and Boiler to be free from defects in material and workmanship according to terms, conditions and time periods. Unless otherwise noted, these warranties commence on the date of installation. If required periodic maintenance is not performed, warranty coverage may be voided.
Need help?
Do you have a question about the HW 79 and is the answer not in the manual?
Questions and answers