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WARNING

Improper installation, adjustment, alteration, 

service or maintenance can cause serious injury 

or property damage. Refer to this manual. For 

assistance or additional information, consult a 

qualified installer or service agency.

WARNING

If the information in these instructions is not 

followed exactly, a fire or explosion may result 

causing property damage, personal injury or 

death.

WARNING

Install in accordance with all local codes.  

In the  absence of local codes, refer to ANSI 

223.1/NFPA 54 and/or CSA B149.1.

CAUTION

The recommended temperature for normal 

residential use is 120°F. The dial on the aquastat 

does not always reflect the out-coming water 

temperature and it could occasionally exceed 

120°F. Variation in out-coming temperature 

could be based on factors including but not 

limited to usage patterns and type of instal-

lation. Test water at the tap nearest to the 

water heater. See page 32 for measuring the 

out- coming water temperature.

WARNING

Hotter water increases the risk of scald injury. 

Before adjusting the water temperature setting, 

read this instruction manual. Temperatures 

at which injury occurs vary with the person’s 

age and the length of exposure. The slower 

reaction time of children, elderly or physically 

or mentally challenged persons increases the 

scalding hazard to them. It is recommended 

that lower water temperatures be used where 

these exposure hazards exist. Households 

with small children or invalids may require 

a temperature setting less than 120°F to 

prevent accidental contact with hot water. 

To 

produce less than 120°F, use point-of-use 

temperature limiting devices.

If higher water temperature is needed in part 

of the water system, automatic temperature 

limiting devices must be used on all lines to 

water taps.

WARNING

Flammable vapors may be drawn to this water 

heater from other areas of the structure by air 

currents. Do not store or use any flammable 

liquids in the vicinity of this heater.

WARNING

Water heater blankets may restrict air flow to 

the water heater and cause fire, asphyxiation, 

personal injury or death.

THIS MANUAL HAS BEEN PREPARED TO 

 ACQUAINT YOU WITH THE INSTALLATION, 

OPERATION, AND MAINTENANCE OF 

YOUR WATER HEATER AND TO PROVIDE 

IMPORTANT SAFETY INFORMATION.

Read all instructions thoroughly before 

attempting installation or operation of your 

water heater. Keep these instructions for future 

reference.
Local plumbing and electrical codes must 

be followed in the installation of this water 

heater. In the absence of a local code use the 

UNIFORM PLUMBING CODE and the NFPA 

Code. Local codes may supersede instructions 

in this installation manual.
These instructions are a guide for the correct 

installation of the water heater. The manufac-

turer will not be liable for damages caused by 

failure to comply with the installation and  

operating instructions outlined on the  

following pages.
Installation, testing, and replacement of gas 

piping, appliances, or accessories, and repair 

and servicing of equipment, shall be performed 

only by a qualified agency.

FAILURE TO FOLLOW THESE INSTRUCTIONS 

OR ALL APPLICABLE BUILDING CODES  

AND REGULATIONS VOIDS THE WARRANTY 

ON THIS WATER HEATER.

Warranty, Registration Card and Parts List are included.

Homeowner: Please remember to return the Registration Card!

To the Consumer:

  

Please read these and all component  

instructions and keep for future reference.

To the Installer:

  

Please attach these instructions  

next to the water heater.

Rev 4 4/21

Installation and Operation Instructions Manual

23419

Models: 75-76SKG, 100-76SKG

Solar Indirect Water Heater with  

Power Direct Vent Gas Backup

Summary of Contents for 100-76SKG

Page 1: ...perature limiting devices must be used on all lines to water taps WARNING Flammable vapors may be drawn to this water heater from other areas of the structure by air currents Do not store or use any f...

Page 2: ...amage personal injury or death DANGER Water heaters utilizing Liquefied Petroleum gas LP are different from natural gas models A natural gas heater will not function safely on LP gas and vice versa To...

Page 3: ...pecifications 4 Section II General Information 5 Section III Pre Installation 7 Section IV Installation 10 Section V Operation 30 Section VI Maintenance 33 Section VII Troubleshooting 35 Section VIII...

Page 4: ...es and meet ANSI Z21 10 3 CSA 4 3 requirements for operation up to 180 F 82 C Approved for use as a direct vent automatic storage water heater WARNING Installation shall be in accordance with all nati...

Page 5: ...he gas backup operation to off peak solar time can increase solar gain in the stored water TEMPERATURE CONTROL The water heater is equipped with a combination gas valve ignition control and thermostat...

Page 6: ...TEMPERATURE AND PRESSURE RELIEF VALVE T P CAUTION To reduce the risk of excessive pressures and temperatures in this water heater install temperature and pressure protective equipment required by loca...

Page 7: ...on will occur in the venting exhaust system It is important to not allow condensate to collect around mechanical components and bare metal parts on the water heater Therefore if condensation occurs in...

Page 8: ...The panel must be strong enough to carry the weight of the heater when full of water NOTE Locate the heater so it is not subject to physical damage from moving vehicles or flooding Do not locate the...

Page 9: ...nches of the top and one within 12 inches of the bottom of the enclosure These openings shall lead directly to room s of sufficient volume so that the combined volume of all the space meets the criter...

Page 10: ...embly outlet The air intake piping is preassembled to route dilution air to the blower assembly and combustion air to the burner chamber All vent length measure ments specified in this manual are in a...

Page 11: ...and 2 5 feet respectively The concentric vent termination is equivalent to 10 feet of straight pipe DO NOT use short bend elbows NOTE Elbows used as termination fittings must be included when determi...

Page 12: ...5 10 67 35 10 67 3 5 30 9 14 30 9 14 3 6 25 7 62 25 7 62 4 0 85 25 91 85 25 91 4 1 80 24 38 80 24 38 4 2 75 22 86 75 22 86 4 3 70 21 34 70 21 34 4 4 65 19 81 65 19 81 4 5 60 18 29 60 18 29 4 6 55 16 7...

Page 13: ...ting vent system Verify that the materials as specified in this manual have been used Verify the maximum and minimum vent and combustion air intake equivalent lengths and terminal clearances meet the...

Page 14: ...hat may be opened 6 in 15 cm for appliances 10 000 Btuh 3 kW 12 in 30 cm for appliances 10 000 Btuh 3 kW and 100 000 Btuh 30 kW 36 in 91 cm for appliances 100 000 Btuh 30 kW 6 in 15 cm for appliances...

Page 15: ...flowing back towards the water heater CAUTION Annular spaces around vent pipe wall penetrations shall be permanently sealed using approved materials to prevent entry of combustion products into the b...

Page 16: ...le hole through the exterior of the building is required for the vent pipe Note If air from inside the building will be used for combustion air the require ments in Section III Unconfined Space must b...

Page 17: ...rch deck or balcony 12 inches 30 cm 12 inches 30 cm B Clearance to window or door that may be opened 6 in 15 cm for appliances 10 000 Btuh 3 kW 12 in 30 cm for appliances 10 000 Btuh 3 kW and 100 000...

Page 18: ...imum of 1 8 inch per foot 10 mm per meter to prevent condensate from flowing back towards the water heater CAUTION Annular spaces around vent pipe wall penetrations shall be permanently sealed using a...

Page 19: ...hole through an exterior wall Make sure the wye concentric fitting is cemented to the large diameter pipe and that the rain cap is cemented to the small diameter pipe Install the wye concentric fittin...

Page 20: ...of NFPA 54 ANSI Z223 1 or CSA B149 As a basic guide the following minimum clearances shall be used Minimum 12 inches 30 cm above roof Minimum 12 inches 30 cm above anticipated snow level Maximum 24 i...

Page 21: ...ocal codes or the latest edition of NFPA 54 ANSI Z223 1 or CSA B149 As a basic guide the following minimum clearances shall be used Minimum 12 inches 30 cm above roof Minimum 12 inches 30 cm above ant...

Page 22: ...er Dim Y Dim Y Requirements 1 Minimum 12 in 30 cm above roof US Minimum 18 in 46 cm above roof Canada 2 Minimum 12 in 30 cm above anticipated snow level US Minimum 18 in 46 cm above anticipated snow l...

Page 23: ...l Maximum 24 inches 61 cm above roof level without additional support for vent 4 feet 1 2 m from any gable dormer or other roof structure with building interior access e g vent or window 10 feet 3 m f...

Page 24: ...Joints WARNING Cements and primers are highly flammable Assemble joints in an adequately ventilated area away from heat sources or open flames Do not smoke Read cautions and warnings on material conta...

Page 25: ...adhesive aluminum tape around the connection to secure Form a trap by looping a portion of the plastic tube into approximately a 6 diameter circle With respect to the water heater form the loop such...

Page 26: ...nter check valve or pressure regulating valve is required in the cold water supply a properly sized expansion tank must be installed to control thermal expansion Do not operate the water heater in a c...

Page 27: ...to prevent flashbacks caused by momentary pressure loss For natural gas 5 W C pressure must be maintained upstream of the gas valve during operation For LP gas a minimum of 11 W C must be maintained u...

Page 28: ...offValve Blower Assembly ExhaustVent Slope downward and away from water heater 1 8 inch per foot max for horizontal venting Combustion Air Intake Shut Off Valve Union HeatTrap 6 min HotWater Outlet to...

Page 29: ...replace with suitable power supply 120V 60 Hz wiring and connections The water heater draws less than 5 amps maximum Check for proper polarity at the main power connection prior to operating the wate...

Page 30: ...Page 30 SECTION V OPERATION Figure 19 Instructions To Put The Water Heater In Operation...

Page 31: ...12 6 0 6 16 267 6 5 48 67 25 7 6 7 6 0 1 9 9 2 20 867 21 2 5 2 7 5 3267 385 0 1 9 9 26 6 66 7 1 75 6 25 1 7 21 0 1 9 9 26 6 267 66 7 1 7 0 6 6 6 7851 2 1 8 5 7 5 3267 385 63 5525 21 285 872 2 287 5 6...

Page 32: ...the main burner Wait 30 seconds following shut off of gas then set thermostat to the highest temperature The main burner should relight Set thermostat to the lowest temperature the main burner should...

Page 33: ...ation ANODE RODS Anode rods should be inspected twice in the first year and at least yearly once a time interval for inspection has been developed It is recommended to check the rod s six months after...

Page 34: ...ater heater is shut off Wait at least 5 minutes to allow the flue to cool Remove the flue baffle and clean the flue with a flexible wire brush Slide the brush down the flue at the free end of each row...

Page 35: ...ate kit not installed vertical or horizontal vent systems 3 Contact qualified agency to install condensate kt Refer to this manual 4 Vent air intake system exceeds maximum 4 Contact qualified agency t...

Page 36: ...UIDFH LJQLWRU DQG IODPH URG DVVHPEO QRW SRVLWLRQHG FRUUHFWO OHFWULF SRODULW WR XQLW LV LQFRUUHFW WHVW DQG FRUUHFW RZ YROWDJH WR WKH ZDWHU KHDWHU 6XSSO YROWDJH PXVW HTXDO UDWHG YROWDJH KHFN WKH YHQW DQ...

Page 37: ...ner Door Left Side 2 Flue Baffle 12 Air Intake Boot 3 Hot Outlet Nipple 1 x 4 5 13 Trim Plate 4 Dip Tube 14 PVC Pipe 3 x 62 5 5 Anode Rods 15 PVC Tee 3 x 3 x 2 6 T P Relief Valve 16 PVC Pipe 2 x 3 7 C...

Page 38: ...FG APPR Q A SHEET 1 OF 1 WEIGHT COMMENTS THE INFORMATION CONTAINED INTHIS DRAWING ISTHE SOLE PROPERTY OF BOCKWATER HEATERS INC ANY REPRODUCTION IN PART OR AS AWHOLE WITHOUTTHEWRITTEN PERMISSION OF BOC...

Page 39: ...ively for commercial uses Tank and Heat Exchanger We also warrant that the tank and heat exchanger will not leak due to defective materials or workmanship for five years from the date of original inst...

Page 40: ...somewhere else Fail to follow the care and maintenance instructions provided with the water heater Remove the anode rods Fail to inspect and replace the anode rods you must retain and present your pa...

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