Noritz NCC1991-OD Installation Manual Download Page 35

35

Remote Controller 
RC-9018M

Installation Guide

Requests to Installers

  In order to use the water heater safely, read this installation 

guide carefully, and follow the installation instructions.

  Failures and damage caused by erroneous work or work not 

as instructed in this manual are not covered by the warranty.

  Refer to the Installation Manual provided with the water 

heater for complete installation details.

NORITZ AMERICA CORPORATION

Note

• Cutting too large of a hole on the wall may result in failure to properly secure the remote controller.
• Never fasten or loosen unnecessary screws in order to complete the remote controller installation.
• Be sure to check the positions of wall studs or other obstructions when determining the installation 

location for the remote controller.

• Secure the remote controller cable with approriate anchors, ties, etc.
• Wire the remote controller cable in an area where it will not be directly affected by heat.
• To embed the remote controller cable in concrete, brick, etc., enclose it in conduit in order to prevent 

the remote controller cable from becoming damaged.

• When penetrating a wall containing metal lath, prevent the lath from coming into contact with any 

metallic conduit used in order to prevent electrical interference.

• Wiring shall be provided so that the remote controller cable length is 300 ft (90m) or shorter.
• Connect the remote controller cable to the terminal block of the water heater (see Installation Manual 

provided with the water heater).

In order to use this product safely, read this installation manual carefully and follow the installation
instructions.

 Potential dangers from accidents during installation and use are described below. 

  Closely observe these warnings, they are critical to your safety.

CAUTION indicates a potentially hazardous situation which, if not 
avoided, may result in minor or moderate injury.

CAUTION

•  Do not connect power to the system unit until the remote controller installation is complete.
•  Be sure to fasten the mounting screws tightly by hand so that the remote controller will be secure.

*  Do not use electric drivers, impact drivers and so forth. Tightening with excessive force may 

cause the mounting bracket to be damaged and lead to failures.

•  Install the remote controller on an even wall surface.

* Installing it on an uneven wall surface may cause the bracket to be damaged and lead to failures.

•  This remote controller has a built-in speaker which can be damaged by metal shavings resulting in

 

sound cracking.

  Keep the remote controller in a safe location prior to mounting it on the wall to prevent metal 

shavings

 

from entering the remote controller.

CAUTION

Post-installation Checks

(1) Check if the remote controller is installed securely.
(2) Verify remote controller operation (see Owner's Guide).
* Press the Power On/Off button approximately 5 seconds 

after connecting power to the system.

* Check if the temperature setting on the remote controller is 

appropriate.

Explanation to the Customer

Explain the “Important Safety 
Information”, “Operation Procedures” 
and “Follow-up Service” according 
to the Owner's Guide supplied 
with the water heater.

Summary of Contents for NCC1991-OD

Page 1: ...covered by the warranty Check that the installation was done properly in accordance with this Installation Manual upon completion After completing installation please either place this Installation M...

Page 2: ...ary for installation Quick Connect Cord QC 2 Q ty Shape Part Part Shape Q ty 1 1 Remote Controller Cord 26ft 8m 1 each Isolation Valves includes pressure relief valve Pipe Cover PC 3S SUS 1 1 Owner s...

Page 3: ...ater temperature will become unstable as the pipe length increases Quick Connect cord Union Gas Valve Union Shutoff Valve Shutoff Valve Hot Water Cold Water Leave enough clearance around the plumbing...

Page 4: ...ater supply as unexpected accidents may occur as a result Check Water Supply Quality If the water supply is in excess of 12 grains per gallon 200 mg L of hardness acidic or otherwise impure treat the...

Page 5: ...Also consider the surrounding trees and animals The heat and moisture from the water heater may cause discoloration of walls and resinous materials or corrosion of aluminum materials Do not locate the...

Page 6: ...re in front of the unit Set the bottom edge of the exhaust port about 84 2 130mm from the corridor floor Handrail common side corridor balcony etc Handrail about 84 2 130mm Maintain the following clea...

Page 7: ...J Nonmechanical air supply inlet or combustion air inlet to any other appliance K Mechanical air supply inlet L Above paved sidewalk or paved driveway located on public property Under veranda porch d...

Page 8: ...tallations in the USA 1 below 1 horizontally from or 1 above any door operable window or gravity air inlet into any building 3 above any forced air inlet within 10 Maintain the following clearances to...

Page 9: ...parts may be damaged and may become highly dangerous Install the unit on a vertical wall and ensure that it is level Locating Screw Holes Mounting Structure When installing with bare hands take cautio...

Page 10: ...1 Natural Gas Meter See next page for the pipe capacity charts Noritz Condensing Tankless Gas Water Heater 199 900 Btuh Clothes Dryer 35 000 Btuh Barbecue 50 000 Btuh Gas Range Stove 65 000 Btuh 10 3...

Page 11: ...496 55 112 213 440 675 1260 Maximum Capacity of Flex TracPipe in Cubic Feet per Hour of Natural Gas 0 60 Specific Gravity 0 5 WC Pressure Drop Length in Feet Pipe Size 3 4 1 1 1 4 1 1 2 2 206 383 614...

Page 12: ...ter may not be connected to any heating system or components previously used with a nonpotable water heating appliance When water is required in one part of the system at a higher temperature than in...

Page 13: ...e Use shower heads with low pressure loss If necessary use a pump or other means to ensure that the supply water pressure to the inlet of the heater does not fall below 29 PSI when the maximum amount...

Page 14: ...reatment Required Treatment Required Treatment Required Install Noritz Isolation Valves to allow for flushing Flushing is required if a water treatment device is not installed Suggested Suggested Inst...

Page 15: ...as short as possible Long runs or applications where the nearest drain is above the water heater will require the use of a condensate pump Size the pump to allow for a maximum condensate discharge of...

Page 16: ...PVC pipe DO NOT ADD ANY VALVES DO NOT ADD ANY VALVES NORITZ Condensing Tankless Gas Water Heater NORITZ Condensing Tankless Gas Water Heater Note If the drain line becomes clogged or frozen condensate...

Page 17: ...water heater is not controlling the pump Set the Aquastat to 10 F 5 C below the set output temperature 4 Noritz recommends the use of an Isolation Kit with the installation These kits include an integ...

Page 18: ...ly required by the water heater is 120VAC at 60 Hz The power consumption may be up to 303W or higher if using optional accessories Use an appropriate circuit Do not disconnect the power supply when no...

Page 19: ...p switches as described below The default temperature is 120 F 50 C 1 Disconnect electrical power to the water heater 2 Remove the front cover of the water heater 4 screws 3 Disconnect the remote cont...

Page 20: ...ode and cause problems Be sure to hand tighten when screwing to the terminal block Power tools may cause damage to the terminal block 1 Check to make sure that the remote controller cord has plenty of...

Page 21: ...e controller 2 Disconnect then reconnect electrical power to the water heater 3 Press the MENU Button inside the cover select Initial settings using the Buttons 4 Press the ENTER button the Initial se...

Page 22: ...m a wall circuit to the pump 5 Replace the front cover Pump Wiring This feature is not available when using the Quick Connect Multi System feature Relay connection with larger pumps 85 W 1 Locate and...

Page 23: ...mp Ground wire Connector Use one of the vacant holes Connector Connecting Quick Connect Cord 2 Caution For Quick Connect Multi System Installation use part QC 2 only sold separately Quick Connect Cord...

Page 24: ...r a proper blue color and consistency If the flame does not appear normal the burner may need to be cleaned If the burner needs to be cleaned it must be performed by a qualified service technician Do...

Page 25: ...ower to the unit 8 The unit will now operate whenever hot water is called for If the unit will not operate follow the shutdown instructions and call a service technician Shutdown Instructions 1 Stop a...

Page 26: ...2 WIRING THOROUGHWAYS 2 2 56mm 2 2 55mm 1 7 44mm 0 8 20mm NCC1991 OD GAS INLET COLD WATER INLET HOT WATER OUTLET CONDENSATE DRAIN FROM BOTTOM OF CASE HEIGHT OF EACH FITTING 4 0 5 13mm 6 0 24 x 0 4 6 x...

Page 27: ...tes of connecting electrical power before turning on the Power On Off Button press the or button on the remote controller and hold until the display blinks 99 If 99 does not blink on the remote contro...

Page 28: ...system will make hot water more quickly available to remote fixtures The pump will circulate water through the loop until the entire loop is warm and then the system controller will turn off the pump...

Page 29: ...tat Pump Control Wires use external relayV Unit 1 Set Yes for the question Start pump rotation in system settings See SC 301 6M Installation Manual When installing 2 pumps in parallel Set Yes for the...

Page 30: ...02 PCB Power PCB B5 B5 System Controller No 5 No 4 No 3 No 2 Remote Control terminal block Remote control terminal block Remote Controller Cord PCB Power PCB PCB Power PCB Multi System Wiring Use SC 3...

Page 31: ...to both the cold water supply piping and the hot water supply piping to prevent freezing during cold weather and to prevent heat loss through the piping Unit 1 Unit 2 Unit 3 Unit 10 Unit 11 Unit 12 S...

Page 32: ...roller This system will make hot water more quickly available to remote fixtures The pump will circulate water through the loop until the entire loop is warm and then the system controller will turn o...

Page 33: ...e Hot water storage tank copper or stainless steel pipe Return line circulation pump Size for max flow Size for max flow Storage tank supply line copper or stainless steel pipe Storage tank return lin...

Page 34: ...nit 2 Unit 3 CAUTION The below diagram shows the connection of 3 units to the system controller When connecting 4 or more units follow the same procedure Connect the water heaters to the system contro...

Page 35: ...rovided with the water heater In order to use this product safely read this installation manual carefully and follow the installation instructions Potential dangers from accidents during installation...

Page 36: ...t The value in indicates the quantity Remote Controller Mounting bracket Raised countersunk head wood screw Wall anchor Raised countersunk head screw For junction box installation Machine screw When a...

Page 37: ...mounting bracket Insert the bottom of the remote contoller into the groove at the bottom of the bracket and push in the 2 hooks on top of the remote controller completely If it is difficult to attach...

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