GRUNDFOS DATA BOOKLET. Grundfos COMFORT. Circulator pumps. 50/60 Hz

Transcription

1 GRUNDFOS DATA BOOKLET Circulator pumps 50/60 Hz

2 2 Product range 2. Product range UP(S) COMFORT, 50/60 Hz Pump type 24-hour timer Supplied with Dimensions Accessories Data sheet Thermostat Isolating valve and non-return valve Port-to-port length [mm] UP B UP BU 12 UP BT UP BUT 80 1/2" 14 - UP B PM 15 UP BA PM 16 - UPS B PM 15 UP BX UP BXU 19 UP BXT UP BXUT /4" 21 UP BX PM - 22 UP BXA PM - 23 UPS BX PM 24 UPS xx-14 MB PM Note: Click on a product number to go directly to the performance curve in WebCAPS. Connection 24-hour timer Plug-in timer Available for all products, see page hour timer and thermostat Page 4

3 3 3. General description Type key Example UP S M B X U T Circulator pump Selectric: 3-speed Type range: 15 = length 80 mm / Rp 1/2 20 = length 110 mm / G 1 1/4 XX = pump head only Maximum head [dm] Motor (pump head only - fits all COMFORT pump housings) Brass pump housing Integrated isolating and non-return valves 24-hour timer Thermostat Pumped liquids Thin, clean, non-aggressive and non-explosive liquids without solid particles or fibres Cooling liquids, not containing mineral oil Domestic hot water Softened water. The kinematic viscosity of water is 1 mm 2 /s (1 cst) at 20 C. If the pump is used for a liquid with a higher viscosity, the hydraulic performance of the pump will be reduced. Example: 50 % glycol at 20 C means a viscosity of approx. 10 mm 2 /s, reducing pump performance by approx. 15 %. When selecting a pump, the viscosity of the pumped liquid must be taken into account. General description Liquid and ambient temperatures Liquid temperature range: +2 to +95 C. It is recommended to keep the operating temperature around e.g. 50 C to minimise build-up of lime deposits. Be aware of the risk of legionella contamination. The ambient temperature should always be lower than the liquid temperature to minimise condensation in the stator housing. Maximum system pressure PN 10: 1.0 MPa (10 bar). Inlet pressure To prevent cavitation noise and damage to the pump bearing, a minimum inlet pressure of 0.5 bar (5 m head) is required at the pump suction port. Approvals Fig. 1 European approvals 5

4 3 General description Applications The GRUNDFOS COMFORT circulator pump is designed for domestic hot-water systems in single- and twofamily houses small heating systems cooling and air-conditioning systems. The pump is suitable for open and closed systems. It must be installed indoors. Domestic hot-water systems For circulation of drinking water in domestic hot-water systems, use pump type GRUNDFOS COMFORT with stainless-steel, brass or bronze pump housing. Grundfos recommends installing the pump in systems with hot-water storage tanks. TM Fig. 4 Domestic hot-water application with hot-water storage tank Fig. 2 Single-loop system TM TM Fig. 3 Branched system 6

5 3 Options 24-hour timer COMFORT BU, BUT, BXU, BXUT models have a builtin timer function. The built-in timer has the following functions: Timer set to OFF TIMER ON Adjustable thermostat The built-in thermostat of pump types BT, BUT, BXT and BXUT can be set to stop the pump at a preset liquid temperature. Setting range: 35 to 65 C. The thermostat function can be deactivated by turning the thermostat to position. Factory setting: 35 C. Fittings Extension sets Non-return valve Isolating valve Union sets Venting flange. See Accessories, page 26. The pump is switched off. starts and stops automatically at set intervals of minimum 20 minutes. runs continuously. AUTO ADAPT COMFORT BA PM, and BXA PM pumps feature the AUTO ADAPT function that adapts the pump operating hours by switching on and off according to the tapping pattern of the user(s). This means that the pump provides the maximum comfort and saves energy at the same time. Energy saving The built-in AUTO ADAPT function saves energy in two ways: Electrical energy consumption of the pump itself Heat energy consumption of the domestic hot-water system. The AUTO ADAPT function automatically adjusts the number of pump operating hours, based on the hotwater consumption in the given system. The AUTO ADAPT function requires an included temperature sensor to be installed on the flow pipe 20 to 50 cm from the boiler outlet. This sensor and the temperature sensor incorporated in the pump are used to detect when hot water is tapped. The detected tapping events are logged and used to predict the consumption pattern. The AUTO ADAPT function automatically controls the on/off behaviour of the pump according to this pattern. This ensures that the pump only runs when necessary, which saves both heat energy and electrical energy. General description cm Max. 2.5 m TM Fig. 5 COMFORT BA PM, BXA PM pump with built-in temperature sensor AUTO ADAPT in heating systems regulated with a thermostatic regulating valve In systems including a thermostatic regulating valve, choose a COMFORT pump without the AUTO ADAPT function, e.g. from the COMFORT UPS range. Choosing a pump with AUTO ADAPT function will result in two active regulating systems working separately, which is not recommendable. NOTE: If a pump with AUTO ADAPT function is installed in a circulation system where the temperature of the recirculated water is regulated by a thermostatic regulating valve, Grundfos recommends opening the thermostatic regulating valve completely. This is done by setting the valve to max., which deactivates its regulating function. 7

6 4 Technical data 4. Technical data GRUNDFOS COMFORT (PM) GRUNDFOS COMFORT (PM) circulator pumps come with various pump housing versions and lengths incorporating isolating and non-return valves or prepared for subsequent fitting of such valves. The motor can be separated from the pump housing, enabling easy maintenance and replacement. The rotor bearing is self-adjusting and lubricated by the pumped liquid. The pumps have the following characteristics: Parts in contact with the pumped liquid are hermetically separated from the stator by a stainless-steel spherical separator. The bearing has no play, and as it has only a single bearing point, it generates very low friction, resulting in reduced power input and noise. Construction GRUNDFOS COMFORT circulator pumps are available with two pump housing versions incorporating isolating and non-return valves or prepared for subsequent fitting of such valves. The water-conducting part of the pump is hermetically separated from the stator by a stainless-steel spherical separator. The motor can be separated from the pump housing for easy maintenance and replacement. Class II electrical insulation TM Motor The terminal box is easily accessible and has a functional cable connecting terminals. The cable entry is tight and incorporates cable relief. The terminal box and the motor/pump unit have been wet-tested according to the Low Voltage Directive. Standards used: EN and EN The motor is impedance-protected and consequently short-circuit-proof. No additional motor protection is required. Fig. 6 Electrical double insulation symbol All COMFORT PM models are designed to be electrically double insulated. This makes the protective earth connector obsolete, and it is therefore not present on COMFORT PM models. Voltage Insulation class (PM) Enclosure class 1 x 230 V, 50/60 Hz IP42 (IP44) F COMFORT PM, high-efficiency pump The motor is a single-phase, 12-pole, permanentmagnet motor in conformity with the EMC directive. The permanent-magnet motor has no rotating bearing shaft. A green indicator light on the motor is on when the motor is running. COMFORT, low-efficiency pump This version has a spherical motor. In contrast to conventional canned-rotor motors, the spherical motor has no rotating bearing shaft. The stator transfers the magnetic field to the rotor in the water-conducting part of the pump. 8

7 4 GRUNDFOS COMFORT (PM) Technical data TM Fig. 7 Sectional drawing of the COMFORT pump, except COMFORT PM pump variants TM Fig. 8 Sectional drawing of the COMFORT PM pump variants Component and material specification Pos. Component Material EN AISI 1 Stator lamination Steel 2 Stator windings Copper wire and enamel 3 Stator housing Aluminium/P66 4 Capacitor Metallised PP film 5 Contact for PC board Tin-plated brass 6 Retainer for PC board, lower PA66/6 7 Retainer for PC board, upper PA66/6 8 Spherical separator Stainless steel Rotor can, complete Stainless steel/tungsten carbide Ti 10 Rotor, impeller Stainless steel, EPDM, PPO, PFTE, graphite 11 Pump housing Brass MS Terminal box cover PC/ABS 13 PC board with diode FR 4 14 Motor cover PPO 15 Screw Stainless steel Light Lexan 17 Cable PVC 18 Plug/Alpha plug (BA/BXA) PA66 19 Insulation cover EPP Nameplate PET Cable ring 1 PC/ABS 22 Cable ring 2 PC/ABS 23 Temperature sensor 9

8 5 Data sheets 5. Data sheets Curve conditions The guidelines below apply to the performance curves on the following pages: Test liquid: airless water. The measurements for UP COMFORT and UPS COMFORT have been made at a water temperature of 20 C. All curves show average values and should not be used as guarantee curves. If a specific minimum performance is required, individual measurements must be made. The UP and UPS curves apply to a kinematic viscosity of υ = 1 mm 2 /s (1 cst). The conversion between head H [m] and pressure p [kpa] has been made for water with a density of ρ = 1000 kg/m 3. For liquids with other densities, for example hot water, the discharge pressure is proportional to the density. Energy labelling From 1 January 2013, the previous A to G energy label is no longer effective. The new energy efficiency index (EEI) must be stated on circulator pumps in order to sell them in the EU. Exceptions from EuP scope UPS circulator pumps with pump housing in stainless steel are not covered by the EuP requirements from 2013 as these are drinking water circulators specifically designed to be used in the recirculation of water intended for human consumption 1. Circulator pumps for domestic hot-water systems are not covered by the EuP requirements from 2013 as the pumps are suitable for drinking water only and must therefore be used for purposes as such 2. Circulator pumps in the COMFORT range are not covered by the EuP requirements from 2013 as the hydraulic performance is below 1 W 3. 1: Commission Regulation (EU) No 622/2012, definition (6). 2: Commission Regulation (EU) No 622/2012, subject matter and scope (2) (a). 3: Commission Regulation (EU) No 622/2012, definition (1). TM

9 5 Data sheets COMFORT UP BA PM p H [kpa] [m] Q [m³/h] Q [l/s] TM P1 [W] I 1/1 [A] x 230 V, 50 Hz TM TM Connections: Various fittings, see page 26. System pressure: Max. 10 bar. Liquid temperature: +2 to +95 C (TF 95). Dimensions [mm] Weights [kg] Ship. vol. Pump type L1 H1 H2 H3 B1 B2 G Net Gross [m 3 ] UP BA PM Rp 1/