Raypak XTherm Series User Manual

19
the Indirect Supply sensor (S6) and the Target Max
setting when using the Indirect DHW sensor (S5). The
Boiler/Injection Pump (P1) runs during all heat calls
regardless of priority. The Indirect DHW Pump (P3)
runs during an indirect call for heat with no “off” delay.
The Boiler/Injection Pump (P1) is delayed “off” as user
defined in the BOILER menu and the System Pump
(P2) is delayed “off” in the ADJUST menu. The system
pump (P2) runs whenever the system is enabled for
heating and the outdoor air temperature is lower than
the WWSD temperature setting (if utilized) unless an
indirect call for heat is present.
WH – Direct DHW Configuration
When the unit is ordered as a “WH” configuration, the
only application available to it is direct DHW with sin-
gle or multiple heaters (Maximum 4 heaters). The tank
temperature is controlled by the System sensor (S3).
The Boiler/Injection Pump (P1) runs during any call for
heat. The System Pump (P2) output is active whenev-
er the system is enabled. The Boiler Pump is delayed
“off” as user-defined in the BOILER menu.
Fig. 21: WH Units - Single Water Heater with Tank
H Units - Single Boiler with Process Tank
NOTE: A Tank Aquastat can be used in lieu of the
Indirect DHW Sensor (S5). See the VERSA IC man-
ual for additional details.
Domestic Hot Water
When designing the water piping system for domes-
tic hot water applications, water hardness should be
con-sidered. Table H indicates the suggested flow
rates for soft, medium and hard water. Water hardness
is ex-pressed in grains per gallon.
Model 2505 Model 3005
Sys Ret
Temp
(F)
Soft (2-4) Med (5-15) Hard (16-25)
Pipe max eq ft
(164gpm@6.8ft.hd.)
Soft (2-4) Med (5-15) Hard (16-25)
Pipe max eq ft
(190gpm@2.1ft.hd.)
Supply
Temp
(F)
Sys
Flow
GPM
Supply
Temp
(F)
Sys
Flow
GPM
Supply
Temp
(F)
Sys
Flow
GPM
Supply
Temp
(F)
Sys
Flow
GPM
Supply
Temp
(F)
Sys
Flow
GPM
Supply
Temp
(F)
Sys
Flow
GPM
3” 4” 3” 4”
80 144 74 139 81 137 83 100 350 148 84 139 97 139 97 110
100 144 108 139 122 137 128 100 350 148 119 139 146 139 146 110
120 149 164 149 164 149 164 100 350 150 190 150 190 150 190 110
140 169 164 169 164 169 164 100 350 170 190 170 190 170 190 110
Model 3505 Model 4005
Sys Ret
Temp
(F)
Soft (2-4) Med (5-15) Hard (16-25)
Pipe max eq ft
(222gpm@2.7ft.hd.)
Soft (2-4) Med (5-15) Hard (16-25)
Pipe max eq ft
(253gpm@3.5ft.hd.)
Supply
Temp
(F)
Sys
Flow
GPM
Supply
Temp
(F)
Sys
Flow
GPM
Supply
Temp
(F)
Sys
Flow
GPM
Supply
Temp
(F)
Sys
Flow
GPM
Supply
Temp
(F)
Sys
Flow
GPM
Supply
Temp
(F)
Sys
Flow
GPM
3” 4” 3” 4”
80 148 98 143 106 143 106 100 148 112 146 115 146 115 100
100 148 139 143 155 143 155 100 148 158 146 165 146 165 100
120 150 222 150 222 150 222 100 150 253 150 253 150 253 100
140 170 222 170 222 170 222 100 170 253 170 253 170 253 100
HIGH FIRE CONDITIONS
Flow rates determined based on max temperature rise of 30ºF. Pipe size selected based on 7.5 ft per sec maximum velocity.
*Must utilize optional cupro-nickel tubes. If over 25 grains per gallon, a water softener/treatment system must be utilized.
**Caution: For scale-free operation with “Hard Water” (16-25 grains per gallon of total hardness), the operating control must NOT be set
higher than 130ºF. For higher than 130ºF operation, a water softener/treatment system must be utilized.
***Care should be given to prevent over-softening of the water as over-softened water can become aggressive. Cupro-nickel tubes are
recommended for water softened below 5 grains per gallon.
Table H: Domestic Water Heater Flow Rate Requirements

Raypak XTherm Series Specifications

General

Brand	Raypak
Model	XTherm Series
Category	Swimming Pool Heater
Language	English