LAARS Rheos RHCV - Install and Operating Manual - Manual (Page 13)

Rheos Boiler and Water Heater Page 13
THERMOMETER
GLOBE VALVE
CHECK VALVE
PRESSURE REDUCING VALVE
W/ FAST FILL BYPASS
EXPANSION TANK
WITH AIR SCOOP AND
AUTO AIR VENT
PUMP
LEGEND
VALVE
TEMPERATURE
SENSOR
3-WAY VALVE
PURGE
VALVE
INSTALL AIR VENTS AT HIGH POINTS IN SYSTEM
PIPING & SIZING OF EXPANSION TANK
PER TANK MANUFACTURER'S INSTRUCTIONS
PRIMARY/SECONDARY MANDITORY FOR ALL
VARIABLE FLOW SYSTEMS
BOILER CIRC. PUMP SIZED FOR FLOW THROUGH BOILER
BOILER CIRC. PUMP TO BE USED WITH EM
DOTTED DEVICES INDICATE ALTERNATE LOCATIONS
BOILER CIRCUIT PIPING MUST BE EQUAL TO
BOILER WATER CONNECTION SIZE
SYSTEM TEMP. INTERLOCK REQUIRED
MULTIPLE STAGE BOILERS RECOMMENDED
2
CAUTION: THIS DRAWING SHOWS SUGGESTED
PIPING CONFIGURATION AND VALVING. CHECK
WITH LOCAL CODES AND ORDINANCES FOR
ADDITIONAL REQUIREMENTS.
BOILER CIRC.
PUMP
SYSTEM PUMP
C
C
C
180° F
180° F
140° F
120° F
NOTES:
1. BOILER LOOP TO BE MAINTAINED AT 180° F.
2. ZONE THERMOSTATS TO BE INTERLOCKED WITH BOILER.
BOILER TO FIRE UPON CALL FOR HEAT FROM ANY ZONE.
3. ZONE PIPING AND INTERLOCK WIRING TO BE
DESIGNED BY SYSTEM DESIGNER.
COLD WATER
MAKE-UP
OPTIONAL PUMP MOUNTED UNIT AVAILABLE
C D
D
D
DIMENSION ''C'' TO BE 4 PIPE DIAMETERS
DIMENSION ''D'' TO BE 18" MINIMUM
Figure 6. Hydronic Piping — One Boiler, Multi-Temperature System.
Temperature Rise in Degrees (°F/°C)
20°F 11°C 25°F 14°C 30°F 17°C
Model Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L Flow H/L
(Size) gpm feet lpm m gpm feet lpm m gpm feet lpm m
1200 104 18 395 5.5 84 12 316 3.7 70 8 264 2.4
1600 139 22 527 6.7 111 14 422 4.3 93 10 351 3.0
2000 174 20 659 6.1 139 13 527 4.0 116 9 439 2.7
2400 209 18 791 5.5 167 12 632 3.7 139 8 527 2.4
NOTE: Maximum temperature rise is 30°F (17°C), as shown. Headloss is for boiler’s heat exchanger only.
Table 8. Water Flow Requirements, RHCH (Boiler).