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Wall-hung gas-fired condensing boilers
MCA Pro 45/65/90/115
Product may not be exactly as shown.
DANGER
If you do not follow these instructions exactly, a fire
or explosion may result causing property damage,
personal injury or death.
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 or operate any appliance.
• Evacuate all people.
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any
phone in your building.
• Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire
department.
Installation and service must be performed by a
professional licensed heating contractor, qualified
installer, service agency or the gas supplier.
MCA-Pro ISM Rv.4.0 3/2014
Installation
and Service
Manual
DANGER
When using either PVC, CPVC, Polypropylene or
stainless steel venting the components must be
certified according to ULC-S636 and or UL1738. Read
the Installer and Service Manual prior to installing.
Failure to follow the instructions in the manuals
could lead to death, serious personal injury and or
substantial product and or property damage.
WARNING
This manual and all instructions must be read in its
entirety by a qualified and certified installer with the
appropriate gas fitter's license for the jurisdiction
within the area of installation. This manual and ALL
documentation MUST BE READ BEFORE installation to
avoid any possible dangerous conditions. Failure to do
so may create a seriously dangerous situation which
may cause death, severe personal injury or substantial
product/property damage.
www.dedietrichboilers.com
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Table of Contents
Related Manuals for DeDietrich MCA Pro 45
Summary of Contents for DeDietrich MCA Pro 45
- Page 1 Wall-hung gas-fired condensing boilers MCA Pro 45/65/90/115 Installation and Service Manual Product may not be exactly as shown. DANGER DANGER If you do not follow these instructions exactly, a fire When using either PVC, CPVC, Polypropylene or or explosion may result causing property damage, stainless steel venting the components must be personal injury or death.
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Page 2: Safety And Warranty Information
Metric standard. Fractional rounding Dietrich boilers. may affect dimensional tolerances. Carbon monoxide Flue products can flow into living spaces if improperly installed, adjusted, serviced or maintained. The flue gases contain carbon monoxide which is poisonous. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 3: Table Of Contents
4.5.2 MCA Pro Boiler with one heating circuit and DHW tank 4.6 Water connections 4.6.1 Flushing the system 4.6.2 Connection of the heating circuit 4.6.3 Connecting the expansion tank 4.6.4 Connecting the condensate discharge pipe 4.7 Gas connection 4.7.1 Making piping connection MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 4 5.6.1 Reading the various current values 5.6.2 Readout from the hour counter and percentage of successful starts 5.6.3 Status and sub-status 5.7 Changing the settings 5.7.1 Parameter descriptions 5.7.2 Modification of the user-level parameters MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 5 9.2.6 Fan - MCA 90 9.2.7 Fan - MCA 115 9.2.8 Control panel 9.2.9 Spare parts list Checklists 10.1 Checklist for commissioning 10.2 Checklist for periodic inspection and maintenance 10.3 Lighting instructions - Installation and Service Certificate MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 6: Safety Information
For safe operation We recommend that you frequently: - Check for debris which could obstruct the flow of flue gases. The vent or chimney must not be blocked. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 7: Safety Information And Codes
The installation must conform to all national and local codes having jurisdiction: MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 8 It shall be the responsibility of the property owner to secure the services of qualified licensed professionals for the installation of hard wired carbon monoxide detectors. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 9: Safety Requirements For Installations In The State Of Massachussetts
……………….[End of Extracted Information From 248 CMR 5.08 (2)]………………… MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 10: Start-Up
WARNING Do not attempt to start the burner if excessive fuel has accumulated in the combustion chamber. Do not open the boiler door or clean outs when the boiler is hot. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 11: Lighting And Operating Instructions
Do not use this appliance if any part has been under water. Immediately call a qualified technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 12: Introduction
Carry out installation in compliance with all national and local codes having jurisdiction. • Perform the initial start-up and carry out all mandatory checks. • Explain the installation and operation of the boiler to the user. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 13: General Information
The boiler has not being tested in the factory before shipment using propane. Installers are required to alter gas valves on certain models and check combustion using a combustion analyser if propane to be used MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 14: Safety Instructions And Recommendations
Immediately replace damaged or illegible instructions and warning stickers. Contact DDR Americas Inc. if replacement labels are needed. Modifications Modifications may only be made to the boiler after the written permission of DDR Americas Inc. to do so. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 15: Technical Description
Heat exchanger Flue gas test port Ignition/ionization electrode Manifold pipe Combined Venturi and gas valve unit Air intake silencer Control panel cabinet Siphon Auxilliary control cabinet Flue gas temperature sensor Internal heating supply pipe MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 16: Operating Principle
• Hydraulic separators/Low loss headers for a cascade system of 2 or 3 boilers (MCA Pro 45 and/or MCA Pro 65). The supply and return of each boiler can be directly connected to these. - Page 17 CSA Certified Installion Altitude ft/m Max. 4,500/1,370 (Canada) For higher altitudes consult factory Dry Boiler Weight Lb/kg 117/53 133/60 148/67 150/68 Wetted Weight Lb/kg 130/59 147/67 165/75 167/76 Noise Level at @ 1m (Aberage) dB(A) MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 18: Installation
4.2.2. Accessories/Options Description Pipe vent adapter 80/125 (MCA Pro 45) Pipe vent adapter 100/150 (MCA Pro 65/90/115) DHW sensor IF-01 control PCB SCU-S02 control PCB... -
Page 19: Rating Plate & Warning Label Location
A connection to the drainage system for the materials in the boiler room or close to the boiler, discharge of condensate must be available close even temporarily. to the boiler. “Connecting the condensate discharge pipe”, page 31 MCA-Pro ISM Rv.4.1 2/2017 MCA Pro 45/65/90/115... -
Page 20: Ventilation
(1) Distance between the front of the boiler and the S1+S2 = 23.½ in /150 cm internal wall of the cupboard. CAUTION Follow local and national codes having jurisdiction MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 21: Dimensions Without Bottom Connection Kit Accessory
Gas connection; ¾” Male thread (NPT) P-trap 7½/191 Heating circuit supply pipe; 1¼” Male thread (NPT) Back/center of pipe 2/50 Pipe length of G and H Pipe length of F and J 1½/40 N Distance between boilers 12/300 MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 22: Dimensions With Bottom Connection Kit Accessory
Right side/supply pipe 5⅛/130 thread (NPT) P-trap 7½/191 Gas connection; ¾” Male thread (NPT) Right side/return pipe 14⅜/365 Heating circuit supply pipe; 1¼” Male U P-trap length 13¼/335 thread (NPT) Distance between boilers 12/300 MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 23: Mounting The Boiler
CAUTION The boiler is delivered with a connection kit accessory. Install this set before carrying out the water and gas connections as described in the installation examples. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 24 When mounting the MCA Pro boiler on a wall, make sure the wall is able to support an minimum of 166.6 lbs/75.6 kg and is vertically plumb. Failure to heed this warning could result in personal injury, property damage or death. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 25: Installation Examples
This is an example/reference ONLY. Ensure all federal/state/provincial and local codes are adhered to. MCA Pro Boiler Boiler pump with isolation valve Heating load Closely spaced tees Expansion tank Heating system pump with isolation valve Outdoor temperature sensor PRV Pressure relief valve MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 26: Mca Pro Boiler With One Heating Circuit And Dhw Tank
Heating load Closely spaced tees Expansion tank Heating system pump with isolation valve Outdoor temperature sensor DHW tank pump with isolation valve Check valve DHW tank DHW tank temperature sensor PRV Pressure relief valve MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 27: Water Connections
De Dietrich to investigate remove debris (copper, hemp, flux). all possible products. A number of well-known • Thoroughly flush the installation until the water manufacturers and their products are: runs clear and shows no impurities. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 28 2.8ºdH (0.5 mmol/l, 5ºf) applies. Please note: For installations that are heated at constant high temperatures up to a maximum of 200 kW installed heat output, a maximum total water hardness of 8.4ºdH (1.5 mmol/l, 15ºf) applies. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 29: Connection Of The Heating Circuit
After the boiler is installed onto the wall bracket, use a water level to ensure the boiler is level in all planes. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 30: Connecting The Expansion Tank
Discharge tubing (field supplied) must be of 1”/2.5 cm diameter. The drain pipe and fittings must conform to ANSI standards and ASTM D1785 or D2846.CPVC or MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 31 Fill the water siphon before starting the boiler to 3. Mount a trap or a siphon in the discharge pipe. avoid combustion products escaping from the boiler. CAUTION During operation, check condensation siphon is draining properly. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 32: Gas Connection
To do this, you should keep in these valves. mind the consumption of all appliances. • If the gas meter has too low a capacity, inform the gas/utility supply company. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 33: Installation Procedure For Gas Valve
Do not touch any electric switch; do not use any phone in your building. To open gas valve To close gas valve To OPEN (Counter clockwise) To CLOSE (clockwise) Gas shut-off valve (Field supplied) Gas shut-off valve (Factory supplied) MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 34: Connections For The Air And Flue Pipes
Standard 2 pipe adaptor supplied with boiler suited for sensor will limit the boiler to the maximum allowed flue imperial size certified PVC/CPVC flue systems. temperature of PVC, 65°C. If the boiler will be installed MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 35 Next turn on the clothes dryer and any other appliances not connected to the common vent system. Turn on MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 36 US, and B149.1 0r B149.2 for installations in Canada. Air and vent piping materials 1. Refer to the table on page 34 and 39 for the approved air and vent piping materials. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 37 If the boiler is installed within the Commonwealth of Massachusetts it must: Be installed by a professional licensed heating contractor, licensed plumber or gas fitter. Refer to page 46 or 47 or 48 for sidewall vent air installations. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 38 - A minimum of 3’/1 m above any forced air intake within a 10’/3 m distance. - No closer than 12”/305 mm below or horizontally from any window, door, or any other gravity air inlet. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 39: Installation Venting Materials
IPEX System 636 pipe, fittings and cement. WARNING Do not mix piping from different pipe manufacturers unless using adapters specifically designed for the purpose by the manufacturer. WARNING Do not use cellular core pipe. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 40 Max. allowed flue temp. Flue temp. Limit parameter 65°C / 149°F 65°C / 149°F CPVC 90°C / 194°F 90°C / 230°F 120°C / 248°F 110°C / 230°F 315°C / 600°F 110°C / 230°F MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 41 Material Standards for installation in: United States Canada PVC schedule 40/80 ULC S636** UL1738 and/or ULC-S636 **Note: IPEX is an approved CPVC schedule 40/80 manufacturer in Canada supplying vent material listed to ULC-S636 MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 42 In the standard configuration the MCA Pro series boiler can supply water temperatures up to 170°F, when using a PVC flue system. A proper anti- legionella functionality cannot be guaranteed when the MCA Pro boiler is used in conjection with PVC venting system. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 43 Do not puncture or drill holes in any portion of the venting, the boiler is equipped with a pressure and emission test port. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 44 Directly above a paved walkway or driveway which serves two or more buildings or where the flue gas condensation or vapor could create a hazard or improper operation of regulators, relief's or valves or any other device. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 45 4. Installation MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 46: Lengths Of The Air/Flue Gas Pipes
Vent ø length Conventional chimney application with sealed air (two pipe system) and different pressure zones Number of elbows 45˚ and equivalent feet/meters Vent ø Max. length * with a 4" to 3" adaptor MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 47 Number of elbows 90˚ and equivalent feet/meters Vent ø Max. length Sidewall vented with sealed combustion air (two pipe system) Number of elbows 45˚ and equivalent feet/meters Vent ø Max. length * with a 4" to 3" adaptor MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 48 100/150 Vertical vented with sealed combustion air (coaxial) Number of elbows 45˚ and equivalent feet/meters Max. length Vent ø in/mm 80/125 80/125 80/125 100/150 100/150 100/150 * Additional concentric adaptor to be used MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 49 Number of elbows 90˚ and equivalent feet/meters Vent ø Max. length Vertical vented with sealed combustion air (two pipe system) Number of elbows 45˚ and equivalent feet/meters Vent ø Max. length * with a 4" to 3" adaptor MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 50 Vertical vented with sealed combustion air (coaxial) Number of elbows 45˚ and equivalent feet/meters Max. length Vent ø in/mm 80/125 80/125 80/125 100/150 100/150 100/150 * Additional concentric adaptor to be used from M & G (Dura Vent) MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 51: Electrical Connections
It is possible to connect various controls, safety and regulation systems to the boiler. The standard control PCB can be extended with: For the optional PCBs, see chapter: "Optional electrical connections", page 59-62 MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 52: Standard Pcb Control
6. Unscrew the necessary cable clamps (to access the connector block) and introduce the cables. 7. Connect the cables to the appropriate terminals on the connector block. 8. Firmly retighten the cable clamps and close the control panel cabinet. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 53: Connecting The Pump
2. Remove the grommet from the opening in the middle of the base of the boiler. Pass the pump connection cable through the base of the boiler and seal the opening again by tightening the bayonet fitting to the cable. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 54 3. Connect the pump connection cable to the cable in the instrument box that is connected with connector X8. 4. Connect the pump connection cable to the cable bundle by opening and closing the cable bundle bands. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 55: Connecting A Third Party Control Unit
Note: This boiler is not suitable for a Nest type thermostat without an external AC power supply. - Standard boiler configuration : DC 24v - 7mA - Optional boiler configuation : DC 24v - 120mA MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 56: Connecting The Outdoor Temperature Sensor
Outdoor temperature (default) °C °F If an outdoor temperature sensor is connected, it is possible to adjust the heating curve. The setting can be modified using parameters p1, p25, p26 and p27. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 57: Frost Protection
(can be set with parameter p30): the circulation pump switches on. • At an outdoor temperature higher than 14ºF/-10ºC (can be set with parameter p30): the circulation pump continues to run and then switches off. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 58: Connecting The Dhw Tank Sensor/ Thermostat
Tdhw Only suitable for potential-free contacts. For use of this input remove the jumper cable The behaviour of the input can be changed using p 36. See chapter: "Parameter descriptions", page 76 MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 59: Release Input
PCBs. See the instructions provided with the control PCB. 1. Unclip the PCB cover. 2. Remove the cover. The boiler comes standard with an auxilliary control cabinet for the optional PCBs. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 60: Connection Options For The 0-10 V Control Pcb (If-01)
A jumper (2) on the interface is used to select either temperature control () or heat output control (%). Jumper 2 Input signal Temperature Description ºF/ºC 0-1.5 32-59/ Boiler off 0-15 1.5-1.8 59-64.4/ Hysteresis 15-18 1.8-10 64,4-212/ Temperature 18-100 required MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 61: Connection Possibilities For The Pcb
Pump control PCB indicates the status: Tsol Gps NC D Tsol • Continuous signal: PCB working normally • Flashing signal: No connection • No signal: No voltage or faulty PCB (Check the wiring) MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 62 CAUTION If the neutral position of the three-way valve is adjusted with parameter p34, the pump should be connected as follows: • = N pump • = L pump = Ground • MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 63: Electrical Diagram
PUMP A Boiler pump Thermostat ON/OFF switch Safety themostat Outdoor Temp. Sensor FAN Fan Return sensor DHW sensor Ignition transformer Flow sensor Connection Computer Ignition power relay Pressure sensor Display FGTS Flue gas temperature sensor MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 64: Filling The Heating System
11.6 psig/0.8 bar , the symbol will appear. If necessary, top up the water level in the heating system (recommended system pressure between 22 - 30 psig/1.5 - 2 mbar ). MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 65: Commissioning
Frost protection: Locking the keys: Key lock-out is Boiler is running in frost protection mode. activated. Hour counter menu: Readout of the operating hours, number of successful starts and hours on mains supply. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 66: Check Points Before Commissioning
8. Purge the gas supply pipe within the boiler by unscrewing the pressure outlet on the gas block. Tighten the measurement point when the pipe has been sufficiently purged. 9. Check the tightness of the gas connections in the boiler. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 67: Waterside Connections
Propane 2 : Boiler is igniting 5 : Burner stop low fire start low fire start 6 : Post-circulation of the pump MCA Pro 45 1750 2800 1750 2800 3 : Heating System 0 : STAND-BY MCA Pro 65 1800... -
Page 68: Gas Settings
See chapter: "Setting the air/gas ratio (Part load)", page 70. Fan speed setting propane Gas type Sea level Altitude application Low fire High fire Start Low fire High fire Start MCA Pro 45 1550 5600 2500 1750* 5600 2800* MCA Pro 65 1600 5600 2500 1800*... -
Page 69: Setting The Air/Gas Ratio (Full Load)
6. If necessary, adjust the gas/air ratio using the adjusting screw (A). Control and setting values O2/CO at full load natural gas Boiler type Setting value Checking value O 2 (%) MCA Pro 45 4.7/5.0 8.9/9.1 4.5/5.1 8.8/9.2 MCA Pro 65 4.7/5.0 8.9/9.1 4.5/5.1... -
Page 70: Setting The Air/Gas Ratio (Part Load)
6. If necessary, adjust the gas/air ratio using the adjusting screw (B). Control and setting values O at part load for natural gas Boiler type Setting value Checking value MCA Pro 45 5.6/5.9 8.4/8.6 5.4/6.1 8.3/8.7 MCA Pro 65 5.6/5.9 8.4/8.6... -
Page 71: Finalizing Work
5p = Internal set point ºF/ºC. • fl = Ionization current (μA). • ñf = Fan speed in rpm. • pr = Water pressure psig/bar. • p = Supplied relative heat output (%). MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 72: Readout From The Hour Counter And Percentage Of Successful Starts
5. Press the [+] button. The display shows . 5A is displayed, alternating with the percentage of successful starts 92 % (for example). 6. Press the button 2 times to return to the current operating mode. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 73: Status And Sub-Status
36 Modulate up for flame control 37 Temperature stabilisation time 38 Cold start Burner stop 40 Burner off 41 Post-purge 42 Close flue gas damper/external gas valve 43 Recirculation protection 44 Stop fan MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 74 62 Control three-way valve 63 Start anti-hunting Stop Wait for burner start Short cycling protection function Lock-out xx Shutdown codexx 17 Bleed Rest Control three-way valve Start pump 61 Pump off 61 Control three-way valve MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 75: Changing The Settings
0 to 43.5psig (x 0.1 psig) Maximum supply 32 to 190ºF temperature of system 0 to 88ºC * Sea level values: see for altitude adjustments (chapter 5.3.1 , Page 67 and 5.4.1, Page 68) MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 76 3 = Lock-out with frost protection (Pump only) 0 = Hot water on Release function 1 = Release input Release waiting time 0 to 255 seconds Gas valve switching time 0 to 255 seconds MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 77: Modification Of The User-Level Parameters
Parameters p1 to p8 can be modified by the user in order to meet heating system and DHW comfort needs. CAUTION Modification of the factory settings may be detrimental to the functioning of the appliance. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 78: Modification Of The Installer-Level Parameters
The boiler also returns to operating status if no buttons are pressed for 3 minutes. 1. Press the two Menu buttons simultaneously and then [+] buttons until the symbol flashes on the menu bar. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 79: Setting The Maximum Fuel Input For Heating System Operation
5500 6500 7500 4100 Maximum fuel input Factory setting MBH/kW Fuel input MBH/kW 204.8 /60 156 /45.7 Fan rotation speed (rpm) 68.3 /20 MCA Pro 45 1500 2500 3500 4500 5500 6500 7500 Maximum fuel input 5600 Factory setting MBH/kW... -
Page 80: Return To The Factory Settings
9. Enter the value of y shown on the type plate using the [-] or [+] button. 10. Confirm the value with the button. The factory settings are reset. 11. The display returns to the current operating mode. T000820-H MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 81: Carrying Out An Auto-Detect
3. Press the [-] or [+] button to increase this value temporarily in manual operation. 4. Confirm the value with the button. The boiler is now set to manual operation. 5. Press the button 2 times to return to the current operating mode. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 82: Shutting Down The System
If the water temperature is lower than 40ºF/4ºC, the boiler starts up. • If the water temperature is higher than 50ºF/10ºC, the boiler shuts down and the heating pump continues to run for a short time. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 83: Checking And Maintenance
Failure to adhere to the instructions in this and other Review: boiler manuals could result in severe personal injury, • Review the maintenance performed with the owner. substantial property damage or death. MCA-Pro ISM Rv.4.1 2/2017 MCA Pro 45/65/90/115... - Page 84 DANGER A failure to replace the above mentioned items could result in death, severe personal injury or substantial product/property damage. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 85 1. Unscrew condensate container and empty the water Checking the expansion tank from the trap line, inspect the line and flush out 1. An expansion tank provides space for the water with fresh water if needed. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 86 Inspection of the ignition electrode high fire, turn the boiler off and let it cool down. Remove the burner and thoroughly clean it with 1. Remove the ignition electrode plug from the ignition transformer. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 87 Do not attempt to conduct this inspection on valve shall be installed between the relief valve and your own. Contact your plumbing contractor for a oiler, or in the discharge line. reinspection to assure continuing safety. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 88: Maintenance Message
If no other faults are noted during the inspection injury, substantial property damage or death. initiated subsequent to the maintenance message, these maintenance kits include all of the parts needed for the maintenance concerned (such as the gaskets, MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 89: Resetting The Automatic Maintenance Message
11. Confirm using ® button. The new maintenance period begins. 12. Press the button 3 times to return to the current operating mode. After a service complete the checklist. See chapter: "Checklist for periodic inspection and maintenance", page 114. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 90: Standard Inspection And Maintenance Operations
Check the tightness of the flue gases evacuation load)", page 70. and air inlet connections. • Check the condition of the vent system. Carry out a visual check for the presence of any damages and/ or corrosion. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 91: Checking The Automatic Air Vent
MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 92: Checking The Burner And Cleaning The Heat Exchanger
Remember to reconnect the connector to the fan. • Check that the gasket is correctly positioned between the mixing elbow and the heat exchanger. (Completely flat in the appropriate groove means it is leak proof). MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 93: Specific Maintenance Operations
Remove the bucket or container and replace the condensate line. f. Follow the steps on pages 94+95 to check the components and replace the burner cover. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 94: Replacing The Non-Return Valve
5. Dismantle the fan. 6. Completely remove the fan/mixing elbow unit. 7. Replace the non-return valve located between the mixing elbow and the fan. 8. To re-assemble, perform the above actions in reverse order. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 95: Assembling The Boiler
If the front casing is not sealed or secured properly, it could result in severe personal injury or death. After a service complete the checklist. See chapter: "Checklist for periodic inspection and maintenance", page 114. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 96: Troubleshooting
• Check the water pressure é:05 too high • No circulation • Check that the sensors are operating correctly • Check that the sensor has been correctly fitted • Check the cleanliness of the heat exchanger MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 97 • Check that the sensors are operating correctly limit thermostat STB) • No circulation • Check that the sensor has been correctly fitted • Check the cleanliness of the heat exchanger • Check that parameter p35 has been set correctly MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 98 • Check the circulation (direction, pump, valves) • Sensor not or badly connected é:35 reversed • Check that the sensors are operating correctly • Water circulation direction • Check that the sensor has been correctly fitted reversed MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 99: Shutdowns And Lock-Outs
2. Confirm by pressing ® button. 5t is displayed, alternating with the shutdown code 9. 3. Press the [+] button. 5 appears on the display. The boiler starts up again automatically when the reason for the blocking has been removed. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 100 SU PCB not • Wrong SU PCB for this boiler • Replace the SU PCB recognised Configuration fault or default parameter • Parameter error on the PCU PCB • Replace the PCU PCB table incorrect MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 101 / sensor error controlled stop after 5 times Non-existing or insufficient TFG>Tfmax: Replace the flue gas sensor. 5 :34 circulation / sensor error controlled stop (1) These lock-outs are not stored in the fault memory MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 102: Error Memory
11. Use the [-] or [+] button to scroll through the faults or shutdowns. 12. Press the button to show the fault list or shutdown list. 13. Press button 2 times to exit the error memory. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 103: Deletion Of The Error Display
9. Press [+] button to modify the value to 1. 10. Press the button to delete the errors from the error memory. 11. Press button 3 times to exit the error memory. MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 104: Spare Parts
9.2 Spare parts 9.2.1 Casing 1003 1001 1006 1005 1002 MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 105: Heat Exchanger And Burner - Mca
2003 2022 2011 2014 2017 2006 2007 2023 2033 2017 2026 2029 2030 2024 2027 2008 2031 2047 2032 2002 2009 2028 2055 2046 2042 2037 2054 2038 2039 2041 2045 2044 2040 MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 106 2019 2021 2017 2012 2003 2011 2024 2006 2007 2030 2014 2033 2026 2047 2029 2027 2008 2031 2032 2002 2009 2028 2055 2046 2042 2037 2038 2054 2039 2041 2045 2044 2040 MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 107: Heat Exchanger And Burner - Mca
2022 2021 2012 2017 2003 2011 2007 2006 2024 2014 2030 2033 2029 2027 2031 2008 2026 2002 2009 2032 2047 2028 2055 2046 2042 2037 2054 2038 2039 2041 2045 2044 2040 MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 108: Fan - Mca
9.2.5. Fan - MCA Pro 35/45/65 9.2.6. Fan - MCA Pro 90 3014 3001 3007 3006 3008 3009 3016 3015 3002 3010 3011 3003 3012 3005 3013 9.2.7. Fan - MCA Pro 115 MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 109: Control Panel
9. Spare parts 9.2.8. Control Panel 4023 4025 4023 4008 4007 4024 4025 4005 4007 4006 4011 4012 4013 4002 4014 4015 4018 4019 4001 4004 4015 4009 4003 4010 4016 4017 MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 110: Spare Parts List
2029 S100737 Sealing ring Ø 44 ×32 ×4 mm × × × × × × × × × × 2030 S101576 Cable clamp 28-35 2031 S101644 Clip 10.2 × × × × × MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 111 × × × × × × × × × × 3012 S101519 Cable clamp 3013 S54755 Flanged nut M6 × × × × × × × × × × 3014 S100055 M5 nut MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
- Page 112 5. Items not illustrated 5001 S103209 Service Kit A 5002 S103210 Service Kit B 5003 S103211 Service Kit C 6. Standard delivery items and accessories 6001 S100316 Outdoor sensor 6002 S43946 DHW tank temperature sensor MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017...
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Page 113: Checklists
Set the room thermostat or the regulator Instruct the user and hand over the necessary documents Fill in the warranty card together with the user Confirmation of commissioning Date (dd-mm-yy) Company name, signature of engineer MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 114: Checklist For Periodic Inspection And Maintenance
Maintenance kit A, B or C used Boiler visually inspected Extra maintenance work that was undertaken Check the water chemistry Confirmation of inspection Date (dd-mm-yy) (dd-mm-yy) (dd-mm-yy) (dd-mm-yy) (dd-mm-yy) Company name, signature of engineer MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 115: Fan - Mca
10. Checklists 10.3 Lighting instructions FOR YOUR SAFETY READ BEFOFRE OPERATING OPERATING INSTRUCTIONS To close gas valve Closed (clockwise) Front View Open TO TURN OFF GAS TO APPLIANCE MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... -
Page 116: Installation And Service Certificate
%Rate Minimum Rate %Rate Minimum Rate %Rate Minimum Rate %Rate Circulator Exercising Freeze Portection Circulators Circulator 1 on________off___________ Circulator 1 on________off___________ Circulator 2 on________off___________ Circulator 2 on________off___________ Circulator 3 on________off___________ Circulator 3 on________off___________ MCA Pro 45/65/90/115 MCA-Pro ISM Rv.4.1 2/2017... - Page 120 DDR Americas Inc. 1090 Fountain Street North, Unit 10 Cambridge, Ontario N3E 1A3 Canada Tel: 519-650-0420 / Fax: 519-650-1709 Toll Free: 800-943-6275 www.dedietrichboilers.com info@dedietrichboilers.com...