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4

C2N Series Tankless Heater

 Installation

5/3/2016 

Bradley • 

215-1821 Rev. B; ECN 16-17-005

Packaging

Crates are constructed from 3/4" (19mm) OSB . 
Crate dimensions approx: 44" x 28" x 12" (1118mm x 711mm x 305mm)
Crates should not be stacked more than 2 high .
All crates must be stacked evenly and horizontally .
Safety issues related to packaging:

•  Product should be transported with the care associated to packages labeled “FRAGILE” even if packaging is not 

marked accordingly .

•  Standard safety procedures for forklift transport and large items less than 1000lbs (454 kgs) should be followed at 

all times . 

•  When stored, crate must be supported in entirety of its length and width .

Mounting Heater

1

WARNING HIGH VOLTAGE SHOCK. Disconnect power supply before performing any work inside 

the heater enclosure.

A

Set heater in a vertical, upright position 
with the water outlet located at top . 

B

Standard Wall Mount 

Mount heater to the wall using the (4) 
mounting brackets on the back of the 
enclosure . Bolt the heater to the vertical 
surface . Vertical surface must support  
150 lbs or more .

Optional Leg Kit 

Use the floor mounting template on the 
side of the crate to help with alignment . 
Secure heater by bolting each leg to the 
floor using 3/8" (10mm) anchor bolts .

C

Install the pressure and temperature relief 
valve on hot water outlet immediately 
following the union .

NOTICE! Valve must empty into a drain.

For best results, install heater as close as possible to the point of use.

Installation should be performed by a qualified plumber or electrician. 

Long pipe runs are not recommended. A heat loss of 1°F for every 10ft (3 meters) of uninsulated 
pipe can occur. 

When determining a mounting location, give consideration to the location of the main electrical panel 
and ensure accessibility of the cabinet enclosure door and other plumbing for service/maintenance. 36" 
(914mm) minimum in front of the cabinet enclosure is required. 

24" 

(609mm)

16¼" 

(413mm)

10¼" 

(260mm)

4" 

(102mm)

4" 

(102mm)

8" 

(203mm)

⁷⁄₁₆

" x ¾"  

(10mm x 20mm) 

Slot  

(6 Places)

Rectangle outlines on template are not 
actual size of heater.

Template may require cutting to fit into 
tight areas.
Holes are for alignment purposes and may 
not represent actual drill size for mounting 
hardware.

Summary of Contents for C2N363/380D

Page 1: ...ls C2N36 C2N50 Voltage options 600V 3 phase 480V 3 phase 415V 3 phase 400V 3 phase 380V 3 phase Table of Contents Pre Installation Information 2 3 Storage Instructions 3 Mounting Heater 4 Plumbing Installation 5 Electric Installation 6 Start Up Check List 7 Start Up 8 Digital Controller Operation 9 Operational Tests 10 11 Product Options 11 Maintenance 12 Troubleshooting 12 13 Special Installation...

Page 2: ... result in serious burns or death Disconnect power supply before performing any work in the enclosure Failure to ground this system may result in death or serious injury Make sure that all water supply lines have been flushed and then completely turned off before beginning installation Debris in supply lines can cause valves to malfunction CAUTION Hot pipes Do not touch May cause minor burns NOTIC...

Page 3: ...zing quick close valves or solenoid valves it is important to install a hammer arrestor or surge tank close to the point of use to absorb pressure spikes Installation Considerations Maximum operating pressure 150 psi 10 bar Standard flow activation 0 75 gpm 2 8 lpm Certifications Keltech Electric Tankless Water Heaters are certified by ETL to UL499 UL50E CSA22 2 No 88 and NFPA 496 for hazardous lo...

Page 4: ...o the vertical surface Vertical surface must support 150 lbs or more Optional Leg Kit Use the floor mounting template on the side of the crate to help with alignment Secure heater by bolting each leg to the floor using 3 8 10mm anchor bolts C Install the pressure and temperature relief valve on hot water outlet immediately following the union NOTICE Valve must empty into a drain For best results i...

Page 5: ...10 B 3 3 8 86 8 203 8 3 4 222 Optional Fused Disconnect Suggested Location for Power Entrance Provided By Installer LOAD L LOAD R READY TEST FAULT RESET GROUND FAULT TEMPERATURE CONTROLLER R 1 2 3 4 5 Outlet To Drain Inlet P T Relief Valve Threaded Unions Y Strainer Recommended Suggested Installation Configuration Components provided by installer unless otherwise specified Reference the product op...

Page 6: ...stranded machine tool wire from an approved isolating 3 pole switch or circuit breaker NOTICE Make sure the electrical cable is the correct size to carry 100 of the full load current See table for proper wire sizes WARNING All Keltech heaters must be fused in accordance with National Electric Code NEC for the full load amperage listed on the nameplate rating for each heater ELECTRICAL SPECIFICATIO...

Page 7: ...ef valve and drain Shutoff valve is installed after pressure and temperature relief valve on outlet if required by local or national plumbing codes If the hot water process is not at the highest point in the plumbing loop then an automatic air vent valve must be added at the highest point in the system plumbing loop to eliminate trapped air Electrical Verify supply voltage matches the indicated vo...

Page 8: ... activate the connected process requiring heated water faucet shower etc then flush the system for 5 minutes to ensure all air is purged from the system NOTICE Failure to bleed air properly will damage elements and cause heater malfunction Be sure that plumbing and electrical are complete per Start Up Check List WARNING Make sure the circuit breaker for the heater is OFF I When startup is complete...

Page 9: ... output temperature Setpoint Down Button Decreases output temperature Infinity Key Back to Home page Advance Key Advances through parameter prompts Auto Man Off C r71 Turns Control Loop On Manual Off XX X h Pr1 Heater Power no AUt1 Autotune Contact Factory C or F C_F1 Change Temperature Units from F to C Output Indicators 1 5 Output 1 2 3 4 or 5 are active and operating if these LEDs are illuminat...

Page 10: ...the inlet water temperature is equal to or greater than the temperature set on the digital controller Perform Operational Test No 2 8 A Turn on hot water faucet fixture process The heater should activate immediately B Turn off hot water faucet fixture process The flow switch will deactivate and shut off power to the heater If the water flow exceeds maximum heating capacity of the heater the temper...

Page 11: ...fused disconnect interlocks with enclosure door when energized prohibiting access to a live cabinet Select the FDS option for an additional level of safety and convenience at the heater location T190 High Temperature Option Reach and maintain temperatures as high as 190 F 88 C D1 Control Interface Provides 4 20ma communication interface with temperature controller TE TE2 Corrosive Fluid Protection...

Page 12: ...very 6 months or more often in areas where hard water sediment is present in the water To clean the Y Strainer 1 Turn the power off at the circuit breaker panel 2 Shut off the installer supplied cold water isolation valve to the heater 3 Relieve pressure in the plumbing lines 4 Position a bucket under the cold water inlet to catch any water that may still be in the pipe 5 Loosen the plumbing conne...

Page 13: ...cal Specifications table in Step 3 for proper requirements 2 Unit is receiving voltage from all 3 phases of the power source A load voltage reading is also helpful 3 Verify the functionality of the flow switch 4 At the wires from the flow switch read Open without flow and Closed with flow 5 Water flow through the heater is adequate to activate the flow switch at 0 75gpm 2 8 lpm standard If the abo...

Page 14: ...e Purge gas compressed air inlet fitting here EXP2 Installation Notes 1 Any tubing conduit or fittings connected to the Pressurized Enclosure PE must conform to local codes for flammability ratings 2 All egress into PE must be plugged and properly sealed to minimize leakage of purge air Use hazardous location sealing fittings suitable for Class I locations within 18 458mm of enclosure 3 The EXP2 p...

Page 15: ...losure and the protective gas supply The alarm actuator shall be mechanical pneumatic or electrical Electrical alarms and electrical alarm actuators shall be approved for the location in which they are installed No valves shall be permitted between the alarm actuator and the enclosure Intrinsically Safe IS Installation 1 Electrical equipment connected to associated apparatus should not use or gene...

Page 16: ...uirements No valves may be fitted between the Expo Technologies system and the alarm switch WARNING Never turn on the power without purging first unless you have proved the interior of the PE is gas free and checked that the Pressurized indicator is green Commissioning Test Commissioning Continuous Flow Keltech Option EXP2 System 1 Open the air or gas supply shutoff valve 2 Adjust the Flow Control...

Page 17: ...alarms function correctly Check the Relief Valve and any other Spark Arrestors Remove any debris or corrosion or replace the Spark Arrestor Check the condition of the air supply filter element Clean or replace it as necessary Periodic Maintenance Every 18 24 months At least every two years the following additional checks are recommended Apparatus Heater Purge Systems Alarms etc is suitable for the...

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